US20060214343A1 - Sheet finishing apparatus - Google Patents
Sheet finishing apparatus Download PDFInfo
- Publication number
- US20060214343A1 US20060214343A1 US11/085,256 US8525605A US2006214343A1 US 20060214343 A1 US20060214343 A1 US 20060214343A1 US 8525605 A US8525605 A US 8525605A US 2006214343 A1 US2006214343 A1 US 2006214343A1
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- US
- United States
- Prior art keywords
- paper
- sheets
- tray
- sheet
- horizontal matching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/24—Pile receivers multiple or compartmented, e.d. for alternate, programmed, or selective filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/24—Post -processing devices
- B65H2801/27—Devices located downstream of office-type machines
Definitions
- the present invention relates to a sheet finishing apparatus for post-processing sheets of paper ejected from an image forming apparatus such as a copier, a printer, or a composite device.
- a sheet finishing apparatus is installed adjacent to the paper ejection unit of the image forming apparatus body.
- the post process is performed for a succeeding sheet of paper.
- an apparatus having a shifting path such as a standby tray installed halfway down the path leading to the stapler.
- the sheets of paper are matched horizontally and the members necessary for horizontal matching are composed of, for example, a horizontal matching plate, a horizontal matching damper, and a spring. Therefore, a simple constitution including very few members necessary for horizontal matching is required.
- FIG. 1 is a perspective view showing the essential section of the sheet finishing apparatus relating to an embodiment of the present invention.
- FIG. 2 is a top view showing the essential section of the sheet finishing apparatus relating to an embodiment of the present invention.
- FIG. 3 is a schematic block diagram showing the sheet finishing apparatus relating to an embodiment of the present invention.
- FIG. 4 is a perspective view showing the stapler of the sheet finishing apparatus relating to an embodiment of the present invention.
- FIG. 5 is a perspective view showing the vertical matching roller relating to an embodiment of the present invention.
- FIG. 6 is an illustration showing the paddle relating to an embodiment of the present invention.
- FIG. 7 is a schematic perspective view showing the standby tray and processing tray relating to an embodiment of the present invention.
- FIG. 8 is a top view showing the standby tray and processing tray relating to an embodiment of the present invention.
- FIG. 9 is a schematic perspective view showing the horizontal matching plate and conveying belt relating to an embodiment of the present invention.
- FIG. 10 is an illustration showing the condition that a sheet of paper on the standby tray or paper ejection tray relating to an embodiment of the present invention is pressed out.
- FIG. 11 is an illustration showing the movement of the standby tray relating to an embodiment of the present invention.
- FIG. 12 is an illustration showing the standby tray guide and assist arm relating to an embodiment of the present invention.
- FIG. 13 is an illustration showing an arrangement example of the standby tray guide and assist arm relating to an embodiment of the present invention.
- FIGS. 14A and 14B are illustrations showing the consistency of the posture of a sheet of paper positioned by the standby tray guide and assist arm on the standby tray.
- FIG. 15 is an illustration showing the horizontal matching plate relating to an embodiment of the present invention.
- FIG. 1 is a perspective view showing the essential section of a sheet finishing apparatus 7 relating to an embodiment of the present invention
- FIG. 2 is a top view showing the essential section of the sheet finishing apparatus relating to an embodiment of the present invention
- FIG. 3 is a schematic block diagram showing the sheet finishing apparatus 7 arranged adjacent to an image forming apparatus 5 such as a copier.
- the sheet finishing apparatus 7 is basically composed of a standby tray 10 , a processing tray 12 , a stapler 14 , a first paper ejection tray 16 , and a second paper ejection tray 18 .
- the inlet rollers 22 are driven by an inlet roller motor 26 . Between the inlet rollers 22 and the standby tray 10 , a paper path ceiling 36 for leading the sheet of paper P to the paper supply rollers 24 is installed.
- the inlet rollers 22 are composed of an upper inlet roller 22 a and a lower inlet roller 22 b .
- the paper supply rollers 24 are also composed of an upper paper supply roller and a lower paper supply roller.
- the standby tray 10 temporarily loads a plurality of sheets of paper P until the processing tray 12 finishes to process the sheets of paper.
- a standby tray guide 11 is arranged on the standby tray 10 on the rear end side of the sheet of paper P.
- the standby tray guide 11 controls the movement and position of sheets of paper P sent from the paper supply rollers 24 to the standby tray 10 .
- the standby tray guide 11 is born rotatably on the side of the standby tray 10 and the front end thereof is rounded so as to crush the upward curl of the sheet of paper P.
- an assist arm 13 in a lever shape is born rotatably by the mounting shaft of the paper supply rollers 24 .
- the assist arm 13 to prevent the rear end side of a sheet of paper P conveyed powerfully from the paper supply rollers 24 from rising, presses it to the standby tray.
- the side of the assist arm 13 in contact with the sheet of paper P is formed slightly heavily so as to surely prevent the sheet of paper P from unexpected movement.
- the standby tray guide 11 is composed of 11 a and 11 b which are arranged right and left almost in accordance with the width of the sheet of paper P.
- the assist arm 13 composed of four assist arms 13 a , 13 b , 13 c , and 13 d are installed and arranged between the standby tray guides 11 a and 11 b in the drawing. Further, to prevent the assist arms 13 from variations in movement, the adjacent assist arms 13 b and 13 c may be connected.
- the processing tray 12 for loading sheets of paper P dropped and supplied from the standby tray 10 is arranged.
- the processing tray 12 while sheets of paper P are stapled by the stapler 14 which is a processing mechanism for performing the post process, matches and supports the sheets of paper P to be loaded.
- standby tray parts 10 a and 10 b are opened in the horizontal direction in the drawing by a standby tray motor 34 and the sheets of paper P are dropped on the processing tray 12 by their own weight.
- the processing tray 12 has a pair of matching rollers, upper vertical matching roller 38 a and lower vertical matching roller 38 b shown in FIG. 5 for matching a plurality of sheets of paper P dropped and supplied from the standby tray 10 in the vertical direction which is the conveying direction.
- the upper and lower vertical matching rollers 38 a and 38 b serve as bundle conveying rollers for clamping a sheet bundle T after the end of the stapling process and taking it out from the stapler 14 .
- the upper vertical matching roller 38 a is driven by a vertical matching upper roller motor 40 and the lower vertical matching roller 38 b is driven by a vertical matching lower roller motor 42 .
- a paddle 44 rotatable for matching the uppermost sheet of paper P loaded on the processing tray 12 in the vertical direction is arranged.
- the paddle 44 as shown in FIG. 6 , has a receiver 44 a for receiving sheets of paper P dropped and supplied onto the processing tray 12 , a tapping portion 44 b for tapping down sheets of paper P onto the processing tray 12 , and a feeder 44 c for matching sheets of paper P on the processing tray 12 and is driven by a paddle motor 46 .
- the paddle 44 is made of rubber and is elastic.
- a chuck 15 is installed so as to be positioned between the lower paper supply roller 24 and the paddle 44 .
- a stopper 45 for making contact with the rear end of each sheet of paper P and controlling the rear end position is installed.
- a conveying belt 50 for conveying a sheet bundle T which is stapled and taken out from the stapler 14 by the upper and lower vertical matching rollers 38 a and 38 b to the first or second paper ejection tray 16 or 18 is installed.
- a feeding pawl 50 a for catching the rear end of the sheet bundle T is attached.
- the standby tray 10 can drop and supply sheets of paper P to the processing tray 12 and also can convey the sheets of paper P toward the first or second paper ejection tray 16 or 18 . Conveying of the sheets of paper P toward the paper ejection trays 16 and 18 is executed by a standby tray roller 28 for matching sheets of paper P making contact with the sheets of paper P on the standby tray 10 .
- the standby tray roller 28 is controlled to move up and down by a standby tray roller driving source 30 and is driven to rotate by a standby tray roller motor 32 .
- the standby tray 10 is arranged at an angle of inclination of ⁇ 1 so as to support sheets of paper P in a state that the front end of each sheet of paper P is positioned higher than the rear end thereof.
- the first or second paper ejection tray 16 or 18 is moved up and down by a paper ejection tray driving unit 52 and either of them is selected.
- the first or second paper ejection tray 16 or 18 when loading sheets of paper P, is moved up or down at an almost same height as that of the standby tray 10 or the processing tray 12 so as to improve the consistency of the posture of sheets of paper P ejected.
- the first or second paper ejection tray 16 or 18 is arranged at an angle of inclination of ⁇ 2 so as to support sheets of paper P in a state that the front end of each sheet of paper P is positioned higher than the rear end thereof.
- the standby tray 10 has the pair of tray members 10 a and 10 b formed so as to project from the wall surface thereof, receives each sheet of paper P by sliding in accordance with the width of the sheet of paper P, and supports both sides of the sheet of paper P.
- standby stoppers 10 c and 10 d for controlling the rear end of each sheet of paper P are installed.
- the standby tray 10 is slidden and moved by the standby tray motor 34 .
- horizontal matching plates 47 a and 47 b shown in FIG. 9 , for horizontally matching the sheets of paper P to prevent them from being disordered in the horizontal direction perpendicular to the conveying direction are installed.
- the horizontal matching plates 47 a and 47 b are formed so as to slide in the direction v in accordance with the width of the sheets of paper P by a horizontal matching motor 48 .
- the horizontal matching plate 47 a has the same constitution as that of the horizontal matching plate 47 a .
- the horizontal matching plate 47 a is composed of a horizontal matching damper portion 47 c , when horizontally matching sheets of paper P, for mitigating a shock to the side of each of the sheets of paper P and a horizontal matching plate portion 47 e which supports the horizontal matching damper portion 47 c and is connected to it via a connection portion 47 d having elastic force. Therefore, even if the horizontal matching damper portion 47 c receives force in the direction of the width of the sheets of paper P, it intends to return to its original position, so that smooth horizontal matching can be executed.
- the horizontal matching plate portion 47 e except the connection portion 47 d , is hollowed out in an inner peripheral shape almost similar to the outer peripheral shape of the horizontal matching damper portion 47 c .
- the reason is that at the time of horizontal matching, the horizontal matching damper portion 47 c prevents unexpected movement.
- a surface 47 f of the horizontal matching damper portion 47 c is positioned one step higher than a surface 47 g of the horizontal matching plate portion 47 e . The reason is that each sheet of paper P makes contact earlier with the horizontal matching damper portion 47 c.
- a part of the horizontal matching plate 47 a is preferably made elastic.
- the horizontal matching plate portion 47 e may be composed of a rigid body and the elastic horizontal matching damper portion 47 c may be composed of an elastic body.
- both horizontal matching plate portion 47 e and horizontal matching damper portion 47 c may be composed of an elastic body.
- the horizontal matching damper portion 47 c and the horizontal matching plate portion 47 e can be molded and connected by the connection portion 47 d having elastic force.
- the sheet finishing apparatus 7 performs a different operation depending on execution of the post process of the sheet of paper P or no execution thereof, or during execution of the post process of the preceding sheet of paper P or end of the post process.
- the first paper ejection tray 16 slides and moves to the position indicated by the dotted line shown in FIG. 3 and can load sheets of paper ejected from the standby tray 10 in consistent good posture.
- sheets of paper P conveyed from the inlet roller 22 via the paper path ceiling 36 to the paper supply rollers 24 are supplied to the standby tray 10 by the paper supply rollers 24 .
- the sheets of paper P are conveyed by the standby tray roller 28 moved down onto the standby tray 10 and rotated in the direction of the arrow f and are ejected to the first paper ejection tray 16 .
- the first paper ejection tray 16 is arranged at an angle of inclination of ⁇ 2 and the front end of each sheet of paper is positioned higher than the rear end thereof, so that for example, even if a sheet of paper P is ejected onto the first paper ejection tray 16 in a state that it is curved convexly as shown by the dotted line in FIG. 10 , the sheet of paper P precedingly loaded on the paper ejection tray 16 is not pressed out by contact with the front end of the succeeding sheet of paper P. Namely, the ejected sheet of paper P is sequentially loaded on the first paper ejection tray 16 unless the order is disturbed.
- the angle of inclination ⁇ 2 is provided, so that the sheet of paper P drops by its own weight and is matched and loaded on the first paper ejection tray 16 in the state that the rear end is properly arranged, and the ejection process of the sheets of paper P is completed.
- the standby tray 10 slides and moves the tray members 10 a and 10 b respectively up to the positions indicated by the dotted lines shown in FIG. 11 in the direction of the arrow m and the direction of the arrow n and opens the drop and supply path of sheets of paper P.
- the horizontal matching plates 47 a and 47 b to horizontally match sheets of paper P dropped from the paper supply rollers 24 , are arranged so that the interval between the horizontal matching plates 47 a and 47 b becomes almost equal to the width of the sheets of paper P. By doing this, the sheets of paper P supplied from the paper supply rollers 24 are directly dropped and supplied onto the processing tray 12 unless the conveyance is interrupted by the standby tray 10 .
- the upper vertical matching roller 38 a is shifted upward and the receiver 44 a of the paddle 44 receives the rear end of each sheet of paper P.
- the sheet of paper P drops in a state that both sides thereof are in contact with the horizontal matching plates 47 a and 47 b and is matched horizontally.
- the paddle 44 rotates in the direction of the arrow o and the rear end of the sheet of paper P drops from the receiver 44 a and is tapped down onto the processing tray 12 by the tapping portion 44 b .
- the paddle 44 sends the sheet of paper P in the direction of the arrow q by the feeder 44 c , and the rear end of the sheet of paper P makes contact with the stopper 45 , and the matching of the sheet of paper P in the vertical direction is completed.
- the vertical matching of sheets of paper P on the processing tray 12 may be executed by the upper vertical matching roller 38 a by moving it up and down each time.
- the sheets of paper P with an image formed thereon are sequentially matched in the horizontal direction and vertical direction and are loaded directly on the processing tray 12 from the paper supply rollers 24 .
- the stapler 14 staples and bundles the sheets of paper P on the processing tray 12 at a desired position to form a sheet bundle T.
- the upper vertical matching roller 38 a moves down on the sheet bundle, and the sheet bundle T is clamped by the upper vertical matching roller 38 a rotating in the direction of the arrow r and the lower vertical matching roller 38 b rotating in the direction of the arrow s and is conveyed toward the first paper ejection tray 16 .
- the first paper ejection tray 16 slides and moves from the position indicated by the dotted line in FIG. 3 to the position indicated by the solid line. Further, the first paper ejection tray 16 is arranged at an angle of inclination of ⁇ 2 and the front end of each sheet of paper is positioned higher than the rear end thereof, so that the sheets of paper P of the bundle precedingly sent onto the first paper ejection tray 16 are not pressed out by contact with the front end of the succeeding sheet bundle T.
- the angle of inclination ⁇ 2 is provided, so that the sheet bundle T drops by its own weight and is matched and loaded on the first paper ejection tray 16 in the state that the rear ends are properly arranged, and the stapling process of the sheets of paper P is completed.
- the standby tray 10 slides and moves the tray members 10 a and 10 b from the positions indicated by the dotted lines shown in FIG. 11 respectively in the opposite direction of the direction of the arrow m and the opposite direction of the direction of the arrow n and can support the sheets of paper P in the positions indicated by the solid lines shown in FIG. 11 . Further, the standby tray roller 28 is shifted upward not to disturb the sheets of paper P. Sheets of paper P which are ejected from the image forming apparatus 5 and supplied by the paper supply rollers 24 are loaded once on the standby tray 10 to wait for the processing tray 12 to become empty.
- the second and subsequent sheets of paper P loaded on the standby tray 10 by the standby tray roller 28 which moves down on the standby tray 10 and rotates in the opposite direction of the direction of the arrow f, are sent toward the standby stoppers 10 c and 10 d and are vertically matched in a state that the rear end of each sheet of paper P is in contact with the standby stoppers 10 c and 10 d .
- the standby tray 10 is arranged at an angle of inclination of ⁇ 1 and the front end of each sheet of paper is positioned higher than the rear end thereof, so that the rear end of each sheet of paper P makes contact with the standby stoppers 10 c and 10 d and the sheets of paper are vertically matched.
- the sheets of paper P are matched accurately on the standby tray 10 like this, even if a sheet of paper P is supplied from the paper supply rollers 24 in the state that it is curved convexly and supplied onto the standby tray 10 , the sheet of paper P precedingly loaded on the standby tray 10 is not pressed out by contact with the front end of the succeeding sheet of paper P. Namely, the supplied sheet of paper P is sequentially loaded on the first paper ejection tray 16 unless the order is disturbed.
- the standby tray 10 slides and moves the tray members 10 a and 10 b respectively in the direction of the arrow m and the direction of the arrow n from the positions indicated by the solid lines shown in FIG. 11 via the positions indicated by the alternate long and short dash lines shown in FIG. 11 up to the positions indicated by the dotted lines shown in FIG. 11 .
- the tray members 10 a and 10 b reach the positions indicated by the alternate long and short dash lines shown in FIG.
- the processing tray 11 are dropped and supplied onto the processing tray 12 through the interval between the tray members 10 a and 10 b .
- the interval between the horizontal matching plates 47 a and 47 b is made almost equal to the width of the sheets of paper P. Therefore, the sheets of paper P dropped from the standby tray 10 are matched horizontally with both sides controlled by the horizontal matching plates 47 a and 47 b.
- the lower side sheet of paper P of the two sheets of paper P dropped on the processing tray 12 is sent in the direction of the arrow q by the lower vertical matching roller 38 b rotating in the opposite direction of the direction of the arrow s, and the rear end of the sheet of paper P makes contact with the stopper 45 , and the vertical matching of the sheet of paper P is completed.
- the upper side sheet of paper P of the two sheets of paper P dropped on the processing tray 12 is sent in the direction of the arrow q by the upper vertical matching roller 38 a rotating in the opposite direction of the direction of the arrow r, and the rear end of the sheet of paper P makes contact with the stopper 45 , and the vertical matching of the sheet of paper P is completed, and hereafter the upper vertical matching roller 38 a is shifted upward.
- the third and subsequent sheets of paper P ejected from the image forming apparatus 5 are directly dropped and supplied onto the processing tray 12 from the interval between the tray members 10 a and 10 b unless they wait on the standby tray 10 .
- the third and subsequent sheets of paper P are sequentially matched on the sheets of paper P loaded on the processing tray 12 before the paddle 44 .
- the sheets of paper P loaded on the processing tray 12 reach a predetermined number of sheets
- the sheets of paper P are stapled by the stapler 14 and a sheet bundle T is formed.
- the sheet bundle T is conveyed toward the first paper ejection tray 16 by the upper and lower vertical matching rollers 38 a and 38 b , and moreover the rear end thereof is caught by the feeding pawl 50 a of the conveying belt 50 , and the bundle is sent onto the first paper ejection tray 16 , and the stapling process of the sheets of paper P is completed.
- the horizontal matching member is structured simply and sure horizontal matching can be realized. Furthermore, the time up to paper ejection can be shortened compared with paper ejection via the processing tray.
- the post process performed for sheets of paper loaded on the processing tray is the stapling process.
- the post process is not limited to the stapling process and for example, the post process such as a hole punching (hole boring) process performed for sheets of paper is not questionable.
- the post process such as a hole punching (hole boring) process performed for sheets of paper is not questionable.
- one sheet of paper instead of a plurality of sheets of paper may be loaded unquestionably on the processing tray.
- the present invention produces an effect.
Abstract
A sheet finishing apparatus of the present invention is composed of, in horizontal matching on a standby tray, a horizontal matching damper portion for mitigating a shock to the side of each of the sheets of paper and a horizontal matching member composed of a horizontal matching plate portion which supports the horizontal matching damper portion and is connected to it via a connection portion having elastic force. Even if the horizontal matching damper portion receives force in the direction of the width of the sheets of paper, it intends to return to its original position, so that smooth horizontal matching can be executed.
Description
- 1. Field of the Invention
- The present invention relates to a sheet finishing apparatus for post-processing sheets of paper ejected from an image forming apparatus such as a copier, a printer, or a composite device.
- 2. Description of the Related Art
- In recent years, there has been an image forming apparatus used in which to perform a post process of sorting and stapling sheets of paper after image forming, a sheet finishing apparatus is installed adjacent to the paper ejection unit of the image forming apparatus body. In such a sheet finishing apparatus, after the end of the post process of a preceding sheet of paper, the post process is performed for a succeeding sheet of paper. To make the succeeding sheet of paper ejected from the image forming apparatus body like this stand by, there is an apparatus having a shifting path such as a standby tray installed halfway down the path leading to the stapler.
- When temporarily loading a plurality of sheets of paper on the standby tray until the process by the processing tray ends, the sheets of paper are matched horizontally and the members necessary for horizontal matching are composed of, for example, a horizontal matching plate, a horizontal matching damper, and a spring. Therefore, a simple constitution including very few members necessary for horizontal matching is required.
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FIG. 1 is a perspective view showing the essential section of the sheet finishing apparatus relating to an embodiment of the present invention. -
FIG. 2 is a top view showing the essential section of the sheet finishing apparatus relating to an embodiment of the present invention. -
FIG. 3 is a schematic block diagram showing the sheet finishing apparatus relating to an embodiment of the present invention. -
FIG. 4 is a perspective view showing the stapler of the sheet finishing apparatus relating to an embodiment of the present invention. -
FIG. 5 is a perspective view showing the vertical matching roller relating to an embodiment of the present invention. -
FIG. 6 is an illustration showing the paddle relating to an embodiment of the present invention. -
FIG. 7 is a schematic perspective view showing the standby tray and processing tray relating to an embodiment of the present invention. -
FIG. 8 is a top view showing the standby tray and processing tray relating to an embodiment of the present invention. -
FIG. 9 is a schematic perspective view showing the horizontal matching plate and conveying belt relating to an embodiment of the present invention. -
FIG. 10 is an illustration showing the condition that a sheet of paper on the standby tray or paper ejection tray relating to an embodiment of the present invention is pressed out. -
FIG. 11 is an illustration showing the movement of the standby tray relating to an embodiment of the present invention. -
FIG. 12 is an illustration showing the standby tray guide and assist arm relating to an embodiment of the present invention. -
FIG. 13 is an illustration showing an arrangement example of the standby tray guide and assist arm relating to an embodiment of the present invention. -
FIGS. 14A and 14B are illustrations showing the consistency of the posture of a sheet of paper positioned by the standby tray guide and assist arm on the standby tray. -
FIG. 15 is an illustration showing the horizontal matching plate relating to an embodiment of the present invention. - Throughout this description, the embodiments and examples shown should be considered as exemplars, rather than limitations on the apparatus of the present invention.
- Hereinafter, the embodiment of the present invention will be explained in detail with reference to the accompanying drawings.
- Further, in each drawing, to the same parts, the same numerals are assigned and duplicated explanation will be omitted.
FIG. 1 is a perspective view showing the essential section of asheet finishing apparatus 7 relating to an embodiment of the present invention, andFIG. 2 is a top view showing the essential section of the sheet finishing apparatus relating to an embodiment of the present invention, andFIG. 3 is a schematic block diagram showing thesheet finishing apparatus 7 arranged adjacent to animage forming apparatus 5 such as a copier. - The
sheet finishing apparatus 7 is basically composed of astandby tray 10, aprocessing tray 12, astapler 14, a firstpaper ejection tray 16, and a secondpaper ejection tray 18. - A sheet of paper P, which an image is formed thereon by the
image forming apparatus 5 such as a copier and ejected from a pair ofpaper ejection rollers 6, is received by a pair ofinlet rollers 22, is supplied to a pair ofpaper supply rollers 24, and is sent from thepaper supply rollers 24 to thestandby tray 10. Theinlet rollers 22 are driven by aninlet roller motor 26. Between theinlet rollers 22 and thestandby tray 10, apaper path ceiling 36 for leading the sheet of paper P to thepaper supply rollers 24 is installed. Theinlet rollers 22 are composed of anupper inlet roller 22 a and alower inlet roller 22 b. Thepaper supply rollers 24 are also composed of an upper paper supply roller and a lower paper supply roller. The standby tray 10 temporarily loads a plurality of sheets of paper P until the processing tray 12 finishes to process the sheets of paper. - As shown in
FIG. 12 , on thestandby tray 10 on the rear end side of the sheet of paper P, astandby tray guide 11 is arranged. Thestandby tray guide 11 controls the movement and position of sheets of paper P sent from thepaper supply rollers 24 to thestandby tray 10. - Generally, when a sheet of paper P printed on one side thereof is set with the printed side down, since ink is shrunk, the sheet of paper P is curled upward. Therefore, the
standby tray guide 11 is born rotatably on the side of thestandby tray 10 and the front end thereof is rounded so as to crush the upward curl of the sheet of paper P. - Furthermore, an
assist arm 13 in a lever shape is born rotatably by the mounting shaft of thepaper supply rollers 24. Theassist arm 13, to prevent the rear end side of a sheet of paper P conveyed powerfully from thepaper supply rollers 24 from rising, presses it to the standby tray. The side of theassist arm 13 in contact with the sheet of paper P is formed slightly heavily so as to surely prevent the sheet of paper P from unexpected movement. - As shown in
FIG. 13 , thestandby tray guide 11 is composed of 11 a and 11 b which are arranged right and left almost in accordance with the width of the sheet of paper P. Further, theassist arm 13 composed of fourassist arms standby tray guides assist arms 13 from variations in movement, the adjacent assistarms - Under the standby tray 10, the processing tray 12 for loading sheets of paper P dropped and supplied from the
standby tray 10 is arranged. - The processing tray 12, while sheets of paper P are stapled by the
stapler 14 which is a processing mechanism for performing the post process, matches and supports the sheets of paper P to be loaded. - As shown in
FIG. 7 , when a predetermined number of sheets of paper is stored in thestandby tray 10,standby tray parts standby tray motor 34 and the sheets of paper P are dropped on theprocessing tray 12 by their own weight. - As shown in
FIG. 4 , thestapler 14 is positioned by astapler driving unit 49 and the stapling process is controlled. Theprocessing tray 12 has a pair of matching rollers, uppervertical matching roller 38 a and lowervertical matching roller 38 b shown inFIG. 5 for matching a plurality of sheets of paper P dropped and supplied from thestandby tray 10 in the vertical direction which is the conveying direction. The upper and lowervertical matching rollers stapler 14. The uppervertical matching roller 38 a is driven by a vertical matchingupper roller motor 40 and the lowervertical matching roller 38 b is driven by a vertical matchinglower roller motor 42. - When sheets of paper P are dropped and supplied onto the
processing tray 12, at the position where the rear end of each sheet of paper P is dropped, apaddle 44 rotatable for matching the uppermost sheet of paper P loaded on theprocessing tray 12 in the vertical direction is arranged. Thepaddle 44, as shown inFIG. 6 , has areceiver 44 a for receiving sheets of paper P dropped and supplied onto theprocessing tray 12, a tappingportion 44 b for tapping down sheets of paper P onto theprocessing tray 12, and afeeder 44 c for matching sheets of paper P on theprocessing tray 12 and is driven by apaddle motor 46. Thepaddle 44 is made of rubber and is elastic. - When temporarily loading a plurality of sheets of paper P on the standby tray until the process by the processing tray ends, a sheet of paper loaded first must be prevented from being pressed out by a succeeding sheet of paper ejected. Further, when a sheet of paper P is curled upward, the
paddle 44 runs idle. - Therefore, as shown in
FIG. 12 , to retain the rear end of the first sheet of paper P at the downstream side part of thestandby tray 10, achuck 15 is installed so as to be positioned between the lowerpaper supply roller 24 and thepaddle 44. - At the end of the processing tray 12 on the side of the
stapler 14, astopper 45 for making contact with the rear end of each sheet of paper P and controlling the rear end position is installed. Almost at the center of theprocessing tray 12, aconveying belt 50 for conveying a sheet bundle T which is stapled and taken out from thestapler 14 by the upper and lowervertical matching rollers paper ejection tray conveying belt 50, afeeding pawl 50 a for catching the rear end of the sheet bundle T is attached. - The
standby tray 10 can drop and supply sheets of paper P to theprocessing tray 12 and also can convey the sheets of paper P toward the first or secondpaper ejection tray paper ejection trays standby tray roller 28 for matching sheets of paper P making contact with the sheets of paper P on thestandby tray 10. - The
standby tray roller 28 is controlled to move up and down by a standby trayroller driving source 30 and is driven to rotate by a standbytray roller motor 32. - The
standby tray 10 is arranged at an angle of inclination of θ1 so as to support sheets of paper P in a state that the front end of each sheet of paper P is positioned higher than the rear end thereof. The first or secondpaper ejection tray tray driving unit 52 and either of them is selected. The first or secondpaper ejection tray standby tray 10 or theprocessing tray 12 so as to improve the consistency of the posture of sheets of paper P ejected. Further, the first or secondpaper ejection tray - As shown in
FIGS. 7 and 8 , thestandby tray 10 has the pair oftray members tray members standby stoppers - The
standby tray 10 is slidden and moved by thestandby tray motor 34. Between thestandby tray 10 and theprocessing tray 12, when dropping and supplying sheets of paper P from thestandby tray 10 onto theprocessing tray 12,horizontal matching plates FIG. 9 , for horizontally matching the sheets of paper P to prevent them from being disordered in the horizontal direction perpendicular to the conveying direction are installed. Thehorizontal matching plates horizontal matching motor 48. - By referring to
FIG. 15 , thehorizontal matching plate 47 a will be explained in detail. Thehorizontal matching plate 47 b has the same constitution as that of thehorizontal matching plate 47 a. Thehorizontal matching plate 47 a is composed of a horizontalmatching damper portion 47 c, when horizontally matching sheets of paper P, for mitigating a shock to the side of each of the sheets of paper P and a horizontalmatching plate portion 47 e which supports the horizontalmatching damper portion 47 c and is connected to it via aconnection portion 47 d having elastic force. Therefore, even if the horizontalmatching damper portion 47 c receives force in the direction of the width of the sheets of paper P, it intends to return to its original position, so that smooth horizontal matching can be executed. - The horizontal
matching plate portion 47 e, except theconnection portion 47 d, is hollowed out in an inner peripheral shape almost similar to the outer peripheral shape of the horizontalmatching damper portion 47 c. The reason is that at the time of horizontal matching, the horizontalmatching damper portion 47 c prevents unexpected movement. - A
surface 47 f of the horizontalmatching damper portion 47 c is positioned one step higher than asurface 47 g of the horizontalmatching plate portion 47 e. The reason is that each sheet of paper P makes contact earlier with the horizontalmatching damper portion 47 c. - A part of the
horizontal matching plate 47 a is preferably made elastic. For example, the horizontalmatching plate portion 47 e may be composed of a rigid body and the elastic horizontalmatching damper portion 47 c may be composed of an elastic body. Further, both horizontalmatching plate portion 47 e and horizontalmatching damper portion 47 c may be composed of an elastic body. In this case, the horizontalmatching damper portion 47 c and the horizontalmatching plate portion 47 e can be molded and connected by theconnection portion 47 d having elastic force. - Next, the operation of the invention will be described. When an image is formed by the
image forming apparatus 5 and a sheet of paper P is supplied from thepaper ejection rollers 6, thesheet finishing apparatus 7 performs a different operation depending on execution of the post process of the sheet of paper P or no execution thereof, or during execution of the post process of the preceding sheet of paper P or end of the post process. - When the post process is not performed, for example, the first
paper ejection tray 16 slides and moves to the position indicated by the dotted line shown inFIG. 3 and can load sheets of paper ejected from thestandby tray 10 in consistent good posture. When the post process is not performed, sheets of paper P conveyed from theinlet roller 22 via thepaper path ceiling 36 to thepaper supply rollers 24 are supplied to thestandby tray 10 by thepaper supply rollers 24. Then, the sheets of paper P are conveyed by thestandby tray roller 28 moved down onto thestandby tray 10 and rotated in the direction of the arrow f and are ejected to the firstpaper ejection tray 16. - In this way, sheets of paper are sequentially loaded on the first
paper ejection tray 16. At this time, the firstpaper ejection tray 16 is arranged at an angle of inclination of θ2 and the front end of each sheet of paper is positioned higher than the rear end thereof, so that for example, even if a sheet of paper P is ejected onto the firstpaper ejection tray 16 in a state that it is curved convexly as shown by the dotted line inFIG. 10 , the sheet of paper P precedingly loaded on thepaper ejection tray 16 is not pressed out by contact with the front end of the succeeding sheet of paper P. Namely, the ejected sheet of paper P is sequentially loaded on the firstpaper ejection tray 16 unless the order is disturbed. Further, even if the preceding sheet of paper P is slightly shifted by being pressed by the succeeding sheet of paper P, the angle of inclination θ2 is provided, so that the sheet of paper P drops by its own weight and is matched and loaded on the firstpaper ejection tray 16 in the state that the rear end is properly arranged, and the ejection process of the sheets of paper P is completed. - Next, a case that the stapling process which is the post process is to be performed and there is no preceding sheet of paper P during execution of the stapling process on the
processing tray 12 will be described. At this time, thestandby tray 10 slides and moves thetray members FIG. 11 in the direction of the arrow m and the direction of the arrow n and opens the drop and supply path of sheets of paper P. Further, thehorizontal matching plates paper supply rollers 24, are arranged so that the interval between thehorizontal matching plates paper supply rollers 24 are directly dropped and supplied onto theprocessing tray 12 unless the conveyance is interrupted by thestandby tray 10. - At the time of drop and supply, the upper
vertical matching roller 38 a is shifted upward and thereceiver 44 a of thepaddle 44 receives the rear end of each sheet of paper P. The sheet of paper P drops in a state that both sides thereof are in contact with thehorizontal matching plates paddle 44 rotates in the direction of the arrow o and the rear end of the sheet of paper P drops from thereceiver 44 a and is tapped down onto theprocessing tray 12 by the tappingportion 44 b. Furthermore, thepaddle 44 sends the sheet of paper P in the direction of the arrow q by thefeeder 44 c, and the rear end of the sheet of paper P makes contact with thestopper 45, and the matching of the sheet of paper P in the vertical direction is completed. Further, the vertical matching of sheets of paper P on theprocessing tray 12 may be executed by the uppervertical matching roller 38 a by moving it up and down each time. - In this way, the sheets of paper P with an image formed thereon are sequentially matched in the horizontal direction and vertical direction and are loaded directly on the
processing tray 12 from thepaper supply rollers 24. When the sheets of paper P reach a predetermined number of sheets, thestapler 14 staples and bundles the sheets of paper P on theprocessing tray 12 at a desired position to form a sheet bundle T. Hereafter, the uppervertical matching roller 38 a moves down on the sheet bundle, and the sheet bundle T is clamped by the uppervertical matching roller 38 a rotating in the direction of the arrow r and the lowervertical matching roller 38 b rotating in the direction of the arrow s and is conveyed toward the firstpaper ejection tray 16. When the rear end of the sheet bundle T passes the upper and lowervertical matching rollers pawl 50 a of the conveyingbelt 50 rotating in the direction of the arrow t and the bundle is sent onto the firstpaper ejection tray 16. - At this time, the first
paper ejection tray 16 slides and moves from the position indicated by the dotted line inFIG. 3 to the position indicated by the solid line. Further, the firstpaper ejection tray 16 is arranged at an angle of inclination of θ2 and the front end of each sheet of paper is positioned higher than the rear end thereof, so that the sheets of paper P of the bundle precedingly sent onto the firstpaper ejection tray 16 are not pressed out by contact with the front end of the succeeding sheet bundle T. Further, even if the preceding sheet bundle T is slightly shifted by the succeeding sheets of paper P, the angle of inclination θ2 is provided, so that the sheet bundle T drops by its own weight and is matched and loaded on the firstpaper ejection tray 16 in the state that the rear ends are properly arranged, and the stapling process of the sheets of paper P is completed. - Next, a case that the stapling process which is the post process is to be performed and a preceding sheet of paper P during execution of the stapling process remains on the
processing tray 12 will be described. At this time, thestandby tray 10 slides and moves thetray members FIG. 11 respectively in the opposite direction of the direction of the arrow m and the opposite direction of the direction of the arrow n and can support the sheets of paper P in the positions indicated by the solid lines shown inFIG. 11 . Further, thestandby tray roller 28 is shifted upward not to disturb the sheets of paper P. Sheets of paper P which are ejected from theimage forming apparatus 5 and supplied by thepaper supply rollers 24 are loaded once on thestandby tray 10 to wait for theprocessing tray 12 to become empty. - As shown in
FIG. 14A , sheets of paper P conveyed powerfully from the paper supply rollers are stiff, so that theassist arm 13 and thestandby tray 11 are rotated and moved upward (in the clockwise direction in the drawing). Therefore, the sheets of paper P move forward so as to be conveyed as linearly as possible. When the rear end of a sheet of paper P comes off thepaper supply rollers 24, as shown inFIG. 14B , thepaddle 44 rotates and assists dropping of the rear end of the sheet of paper P. Then, with respect to theassist arm 13 and thestandby tray guide 11, the heavy front ends are in contact with the sheet of paper P, so that the rear end of the sheet of paper P is immediately pressed against thestandby tray 11. As a result, the rear end of the first sheet of paper P is retained surely by thechuck 15. - The second and subsequent sheets of paper P loaded on the
standby tray 10, by thestandby tray roller 28 which moves down on thestandby tray 10 and rotates in the opposite direction of the direction of the arrow f, are sent toward thestandby stoppers standby stoppers standby tray 10 is arranged at an angle of inclination of θ1 and the front end of each sheet of paper is positioned higher than the rear end thereof, so that the rear end of each sheet of paper P makes contact with thestandby stoppers - Since the sheets of paper P are matched accurately on the
standby tray 10 like this, even if a sheet of paper P is supplied from thepaper supply rollers 24 in the state that it is curved convexly and supplied onto thestandby tray 10, the sheet of paper P precedingly loaded on thestandby tray 10 is not pressed out by contact with the front end of the succeeding sheet of paper P. Namely, the supplied sheet of paper P is sequentially loaded on the firstpaper ejection tray 16 unless the order is disturbed. - When the preceding sheet of paper P on the
processing tray 12 is ejected on the side of the firstpaper ejection tray 16 and theprocessing tray 12 becomes empty, thestandby tray 10 slides and moves thetray members FIG. 11 via the positions indicated by the alternate long and short dash lines shown inFIG. 11 up to the positions indicated by the dotted lines shown inFIG. 11 . By doing this, for example, two sheets of paper P waiting on thestandby tray 10, when thetray members FIG. 11 , are dropped and supplied onto theprocessing tray 12 through the interval between thetray members horizontal matching plates standby tray 10 are matched horizontally with both sides controlled by thehorizontal matching plates - The lower side sheet of paper P of the two sheets of paper P dropped on the
processing tray 12 is sent in the direction of the arrow q by the lowervertical matching roller 38 b rotating in the opposite direction of the direction of the arrow s, and the rear end of the sheet of paper P makes contact with thestopper 45, and the vertical matching of the sheet of paper P is completed. The upper side sheet of paper P of the two sheets of paper P dropped on theprocessing tray 12 is sent in the direction of the arrow q by the uppervertical matching roller 38 a rotating in the opposite direction of the direction of the arrow r, and the rear end of the sheet of paper P makes contact with thestopper 45, and the vertical matching of the sheet of paper P is completed, and hereafter the uppervertical matching roller 38 a is shifted upward. - The third and subsequent sheets of paper P ejected from the
image forming apparatus 5 are directly dropped and supplied onto theprocessing tray 12 from the interval between thetray members standby tray 10. Hereafter, the third and subsequent sheets of paper P are sequentially matched on the sheets of paper P loaded on theprocessing tray 12 before thepaddle 44. - When sheets of paper P loaded on the
processing tray 12 reach a predetermined number of sheets, the sheets of paper P are stapled by thestapler 14 and a sheet bundle T is formed. Hereafter, the sheet bundle T is conveyed toward the firstpaper ejection tray 16 by the upper and lowervertical matching rollers pawl 50 a of the conveyingbelt 50, and the bundle is sent onto the firstpaper ejection tray 16, and the stapling process of the sheets of paper P is completed. - In this embodiment structured like this, there is no need to install an exclusive path for sheets of paper requiring no post process, so that the cost of the sheet finishing apparatus can be decreased. Further, the horizontal matching member is structured simply and sure horizontal matching can be realized. Furthermore, the time up to paper ejection can be shortened compared with paper ejection via the processing tray.
- Further, in the present invention, the post process performed for sheets of paper loaded on the processing tray is the stapling process. However, the post process is not limited to the stapling process and for example, the post process such as a hole punching (hole boring) process performed for sheets of paper is not questionable. In this case, one sheet of paper instead of a plurality of sheets of paper may be loaded unquestionably on the processing tray. Further, needless to say, for a post processing apparatus having such a post processing mechanism, the present invention produces an effect.
- Although exemplary embodiments of the present invention have been shown and described, it will be apparent to those having ordinary skill in the art that a number of changes, modifications, or alterations to the invention as described herein may be made, none of which depart from the spirit of the present invention. All such changes, modifications, and alterations should therefore be seen as within the scope of the present invention.
Claims (7)
1. A sheet finishing apparatus for post-processing sheets of paper after image forming comprising:
a pair of paper supply rollers for receiving and conveying sheets of paper ejected from an image forming apparatus,
a standby tray for making said sheets of paper ejected from said paper supply rollers stand by,
a processing tray arranged under said standby tray for loading said sheets of paper dropped and supplied from said standby tray and/or said sheets of paper ejected from said image forming apparatus not via said standby tray,
a processing mechanism for post-processing said sheets of paper loaded on said processing tray,
a paper ejection tray for loading said post-processed sheets of paper ejected from said processing tray, and
a horizontal matching member for matching horizontally said sheets of paper ejected from said paper supply rollers to said standby tray, wherein:
said horizontal matching member is composed of a horizontal matching damper portion, when horizontally matching said sheets of paper, for mitigating a shock to a side of each of said sheets of paper and a horizontal matching plate portion which supports said horizontal matching damper portion and is connected to it via a connection portion having elastic force.
2. A sheet finishing apparatus according to claim 1 wherein:
said horizontal matching plate portion, except said connection portion, is hollowed out in an inner peripheral shape almost similar to an outer peripheral shape of said horizontal matching damper portion.
3. A sheet finishing apparatus according to claim 1 wherein:
said horizontal matching damper portion is positioned one step higher than said horizontal matching plate portion.
4. A sheet finishing apparatus according to claim 1 wherein:
a part of said horizontal matching plate is made elastic.
5. A sheet finishing apparatus according to claim 1 wherein:
said horizontal matching plate portion is composed of a rigid body and said horizontal matching damper portion is composed of an elastic body.
6. A sheet finishing apparatus according to claim 1 wherein:
both said horizontal matching plate portion and said horizontal matching damper portion are composed of an elastic body.
7. A sheet finishing apparatus according to claim 1 wherein:
said horizontal matching damper portion and said horizontal matching plate portion are molded and connected so as to be provided with elastic force.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/085,256 US20060214343A1 (en) | 2005-03-22 | 2005-03-22 | Sheet finishing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/085,256 US20060214343A1 (en) | 2005-03-22 | 2005-03-22 | Sheet finishing apparatus |
Publications (1)
Publication Number | Publication Date |
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US20060214343A1 true US20060214343A1 (en) | 2006-09-28 |
Family
ID=37034400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/085,256 Abandoned US20060214343A1 (en) | 2005-03-22 | 2005-03-22 | Sheet finishing apparatus |
Country Status (1)
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US (1) | US20060214343A1 (en) |
Cited By (3)
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US20070065202A1 (en) * | 2005-09-15 | 2007-03-22 | Kabushiki Kaisha Toshiba | Sheet alignment apparatus and sheet post-processing apparatus |
US20070138728A1 (en) * | 2005-12-21 | 2007-06-21 | Toshiba Tec Kabushiki Kaisha | Sheet post-processing apparatus |
US20080185773A1 (en) * | 2007-02-01 | 2008-08-07 | Toshiba Tec Kabushiki Kaisha | Sheet processing apparatus and sheet processing method |
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US7537206B2 (en) * | 2005-09-15 | 2009-05-26 | Kabushiki Kaisha Toshiba | Sheet alignment apparatus and sheet post-processing apparatus |
US20070138728A1 (en) * | 2005-12-21 | 2007-06-21 | Toshiba Tec Kabushiki Kaisha | Sheet post-processing apparatus |
US7866647B2 (en) | 2005-12-21 | 2011-01-11 | Toshiba Tec Kabushiki Kaisha | Sheet post-processing apparatus |
US20080185773A1 (en) * | 2007-02-01 | 2008-08-07 | Toshiba Tec Kabushiki Kaisha | Sheet processing apparatus and sheet processing method |
US7690637B2 (en) * | 2007-02-01 | 2010-04-06 | Toshiba Tec Kabushiki Kaisha | Sheet processing apparatus and sheet processing method |
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Legal Events
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AS | Assignment |
Owner name: TOSHIBA TEC KABUSHIKI KAISHA, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TERAO, YASUNOBU;YAMAMOTO, HAJIME;IIJIMA, TOMOMI;AND OTHERS;REEL/FRAME:016881/0599;SIGNING DATES FROM 20050509 TO 20050512 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |