US3921780A - Assembly for mounting a print head - Google Patents
Assembly for mounting a print head Download PDFInfo
- Publication number
- US3921780A US3921780A US489599A US48959974A US3921780A US 3921780 A US3921780 A US 3921780A US 489599 A US489599 A US 489599A US 48959974 A US48959974 A US 48959974A US 3921780 A US3921780 A US 3921780A
- Authority
- US
- United States
- Prior art keywords
- mounting
- clamp
- free end
- teeth
- carriage
- 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.)
- Expired - Lifetime
Links
- 230000000694 effects Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 description 7
- 229920004142 LEXAN™ Polymers 0.000 description 1
- 239000004418 Lexan Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/34—Bodily-changeable print heads or carriages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/40—Clamping arrangements where clamping parts are received in recesses of elements to be connected
- F16B2200/403—Threaded clamping parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S285/00—Pipe joints or couplings
- Y10S285/912—Gear
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20636—Detents
- Y10T74/2066—Friction
Definitions
- ABSTRACT An assembly for mounting a print head to a carriage.
- the assembly includes a mounting clamp and a lock element in addition to the print head and the carriage.
- the print head has at least two mounting studs and a drive element engaging screw.
- Both the carriage and the mounting clamp have openings therein through which the studs and the lock element engaging screw pass when effecting the assembly.
- the mounting clamp also has finger engaging tab members and a ratchet element which includes a resilient free end portion.
- the stud receiving openings in the mounting clamp includes a ramp structure.
- the mounting clamp In assembly, the mounting clamp is rotated by applying a torque to the tab members until the mounting studs engage the ramp structure of their respective stud receiving openings. Thereafter, the lock element engages the screw of the spring head and is tightened thereon. Both the resilient free end portion and the lock element are provided with ratchet teeth which 16 Claims, 10 Drawing Figures US. Patent Nov.-25,1975 sileetlof 3,921,780
- FIG?) HGIO ASSEMBLY FOR MOUNTING A PRINT HEAD BACKGROUND OF THE INVENTION
- the present invention relates generally to an assembly in which a print head, in this case a matrix wire print head, is secured to a carriage. More specifically, the present invention relates to an assembly including a clamp having means to prevent the print head from becoming disengaged from the carriage while also readily facilitating removal of the print head from the carriage.
- print heads in order to produce an observable output. These print heads have a high degree of replacement in comparison to many of the other components of the machine. Quite frequently, special tools are needed in order to mount and replace the print head. All of this is time consuming and consequently expensive.
- a general object of the present invention to provide an assembly for mounting a print head, and in particular a matrix wire print head, to a carriage so that the print head can be mounted and removed from the carriage in a simplified manner.
- the mounting clamp includes means for drawing the print head and carriage into a tight assembly, while the lock element includes a pair of ratchet teeth configured so that relative movement in only one is permitted without the application of an external force to separate the pair of ratchet teeth.
- the print head is itself adapted to be mounted in accordance with the present invention by the provision thereon of at least two mounting studs and a screw element.
- the carriage and mounting clamp are provided with appropriate openings, with the stud openings in the mounting clamp having a ramp structure associated therewith for cooperation with the mounting studs.
- the mounting clamp is also provided with a ratchet detent element fonned preferably integrally with the mounting clamp and including a resilient free end portion.
- the lock element When assembled, the lock element engages both the print head screw and the ratchet detent element after the mounting clamp 2 has been rotated to bring the mounting studs into wedging engagement with their associated ramp structure, and is tightened onto the screw element thereby intensifying the wedgirig action which results in the final mounting of the print head to the carriage.
- the lock element has internal screw threads and external ratchet teeth.
- the threads engage the threads of the print head screw, while the ratchet teeth engage the ratchet detent element.
- FIG. 1 is an exploded elevational view of an assembly including a print head, carriage, and print head mounting clamp in accordance with the present invention
- FIG. 2 is an elevational end view of the mounting clamp according to one exemplary embodiment of the present invention in initial engagement with the studs of the print head;
- FIG. 3 is an elevational end view of the mounting clamp according to the same exemplary embodiment of the present invention shown in FIG. 2 after final engagement of the clamp with the studs of the print head;
- FIG. 4 is a sectional view taken along the line 44 of FIG. 2 illustrating the relationship of the mounting studs to a portion of the mounting clamp during the initial engagement of themounting clamp and the print head;
- FIG. 5 is a sectional view taken along the line 5-5 of FIG. 3 illustrating the relationship of the mounting studs to a portion of the mounting clamp during the final engagement of the mounting clamp and the print head;
- FIG. 6 is a further detail view of the ratchet teeth arrangement
- FIG. 7 is an elevational end view of the mounting clamp according to another exemplary embodiment of the present invention after final engagement of the clamp with the studs of the print head;
- FIG. 8 is an elevational side view of the mounting clamp according to the same exemplary embodiment of the present invention shown in FIG. 7;
- FIG. 9 is a cross-sectional view taken along the line 99 of FIG. 8.
- FIG. 10 is a partial view in perspective of still another exemplary embodiment of the present invention.
- a print head 10 which is one embodiment comprises a wire matrix print head, a supporting portion 12 of a movable carriage which is not further shown, a mounting clamp 14 and a ratcheted knob or locking element 16.
- the mounting or supporting portion 12 forms part of a carriage which is used to support the print head and move it across a record medium and will hereinafter be referred to simply as the carriage 12.
- the print head is relatively complex from the standpoint of its total structural configuration. Printing takes place by moving print wires of guide member 22 longitudinally and transversely'of carriage motion to impact the record medium at the remote or right hand end of member 22. Since the present invention is not, however, concerned with the print head per se but rather with the mounting of the print head, the illustration of the print head has been generalized with particulars as to its external structural configuration which are essential to the understanding of the present invention being shown in the most detail. With this in mind, it can be seen that the print head 10 includes a support member 18, shown as being of generally cylindrical configuration, which defines a transverse surface 20.
- the guide member 22 for print wires which also serves as a carriage engaging guide which is generally convergently tapered in an outward direction from the surface 20.
- the guide member 22 is shown centrally located with respect to the surface 20 although this is not a requirement.
- Also extending from the surface 20 are preferably two diametrically disposed mounting studs 24 and a screw 26.
- the mounting studs 24 are shown as internally threaded to support member 18 and are in threaded engagement with screws (not shown).
- the studs 24 are provided with annular grooves 28 and terminal heads 30.
- the heads 30 have tool engaging grooves 32 extending transversely across them.
- the carriage 12 comprises a generally flat surface within which a U-shaped opening 34 is formed to admit guide member 22 so that the guide member 22 extends therethrough.
- the carriage 12 has also further openings 36 through which the studs 24 extend and an opening 38 through which the screw 26 extends.
- the mounting clamp 14' To clamp the print head 10 to the carriage 12 there is provided the mounting clamp 14'.
- a thermoplastic material sold under the Trademark Lexan may be used for the mounting clamp 14.
- the mounting clamp 14 is preferably molded as a one-piece circular plate having, as shown in FIG. 2, a central opening 40 through which the guide member 22 extends.
- the opening 40 is surrounded by a rim portion 42 within which slots 44 and 46 are formed.
- the rim portion 42 as shown in FIG. 2, has axially extending finger engaging tab members 48, as shown in FIG. 1, formed integrally therewith.
- These tab members 48 are provided to facilitate rotation of the mounting clamp 14, shown in FIG. 1. From one of these tab members there extends a ratchet detent member 50.
- the ratchet detent member 50 preferably formed integrally with its respective tab member, has a generally arcuately shaped resilient free end, see FIG.
- FIG. 6 There are two slots 44, one for each of the studs 24.
- the other slot 46 is provided, see FIGS. 1 and 2, to accommodate the screw 26.
- the slots 44 and 46 are also generally arcuate in shape. In this way, the mounting clamp 14,
- FIG. 1 can be rotated between a release position (FIG. 2) and a lock position (FIG. 3).
- the slots 44 are furthermore key-shaped having a receiving opening 44a, from which an elongated opening 44b extends.
- FIGS. 2 and 4 the assembly is shown with the mounting clamp 14 in its initial unrotated release position.
- the mounting studs 24 are received within the openings 36 of the carriage l2 and the receiving openings 44a of the slots 44 of the mounting clamp 14, and the screw 26 is received within the opening 38 of the carriage 12 and the slot 46 of the mounting clamp 14.
- the next stage in the assembly is to rotate the mounting clamp 14 in a clockwise direction (shown clockwise by arrow B) by applying a torque to the axially extending finger engaging tab member 48. liturin g this motion, the relationship between the studs .1 Q the screw 26 and the mounting clamp 14 changes t E shown in FIGS. 3 and 5.
- the ramp ed s 1 enter their associated annular grooves 28 in the suit? and engage shoulders 58 defined by the terminal hillii 30.
- the shoulders 58 move up the ramp edges 56 during the rotation until the lock position shown in FIG. 3 is reached. This engagement securely wedges the car riage 12 between the print head 10 and the mouniir clamp 14.
- the knurled knob 16 is threaded i the screw 26.
- the ratchet teeth 54 engage the'ratchet teeth 52 as shown in FIG. 6.
- These teeth a'reIso designed so that rotation in the direction of 'tightetfiin;v (clockwise as shown) of the knob 16, (direction A of FIG. 6) is permitted while rotation in the other or l'oosening direction (counterclockwise) is prevented.
- the teeth engagement causes the resilient free end of the ratchet member 50 to undergo alternating deflection.
- the print head 10 In order to remove the print head 10 fromthe carriage 12, it is first necessary to deflect the resilient free end of the ratchet detent member 50 in the direction of the arrow C to a sufficient degree to allow counterclockwise rotation of the knob 16. Continued counterclockwise rotation of the knob 16 causesjt tobe' removed from the screw 26. When this is done,' then the mounting clamp 14 can be rotated counterclockwise by applying an appropriate torque to the fingerengaging tab members 48. In the release position shown in FIGS. 2 and 4, the print head 10 can be axially displaced and removed from the carriage l2.
- FIGS. 7-9 another embodiment of the present invention is shown according to which the ratchet teeth 62 and those formed on the ratchet member 60 is similar to that of the previously described embodiment.
- the ratchet member 60 is offset from the plane of the rim portion 42.
- the rotation of the mounting clamp 14 to tighten the ramp edges 56 against the stud shoulders 58 also produces rotation of the ratchet member 60 relative to the mounting clamp 14 and consequently the ratchet teeth 62.
- This brings about engagement of the teeth 62 and those of the ratchet member 60 and locks the mounting clamp 14 in place.
- the mounting clamp 14 can be rotated in a direction to disengage the ramp from the shoulders 58 and hence the mounting clamp 14 from the print head.
- the mounting clamp 14 is loosely captured or held to the carriage 12 by means of clips 63, which may be L-shaped projections as shown in FIG. 9, supported by and extending from the surface of the carriage 12.
- a tab 64 is provided with ratchet teeth on its back surface which engage ratchet teeth carried on the front surface of the carriage 12.
- the tab 64 and the ratchet toothed portion of the carriage 12 are designed to be separated when the mounting clamp is to be unclamped. This is accomplished by making one to be resilient with respect to the other as by making the tab 64 of resilient thermoplastic.
- an assembly comprising:
- a print head including an outer mounting member having at least two mounting studs and screw means connected thereto and extending outwardly therefrom;
- a mounting clamp including slots formed therein for the passage therethrough of said mounting studs and said screw means after passage through said carriage openings, with the slots through which said mounting studs pass including ramp means at one end thereof, ratchet means having a resilient free end portion and motion applying means for moving said mounting clamp between a release position and a lock position;
- a lock element which engages said screw means and the resilient free end portion of said ratchet means, and prevents the movement of said mounting clamp from said lock position to said release position.
- said mounting clamp comprises a plate-like member having a generally planar surface with a central aperture surrounded by a rim portion, wherein the slots are formed in said rim portion with the slots through which the mounting studs pass being key-shaped and arcuate in their longitudinal extent having a circular receiving end and'an elongated portion extending from the receiving end, and wherein said ramp means are formed by the parallel edges of said elongated portions with said edges having an inclination relative to the planar surface of said mounting clamp.
- mounting studs each include a screw member and an outer casing having an internally threaded bore, an annular groove and a head portion, and wherein the parallel edges of said ramp means associated with each of said mounting studs are received within said annular groove for engagement with said head portion.
- said motion applying means comprises a pair of tab members which extend axially outwardly from the planar surface of said mounting clamp and transversely across said rim portion.
- a mounting clamp for securing one member to a second member wherein said one member has a plurality of mounting studs connected thereto comprising a plate-like member having a generally planar surface with a central aperture surrounded by a rim portion, said rim portion having a plurality of slots formed therein and finger engaging tab members extending axially outwardly therefrom, said slots being key-shaped and arcuate in their longitudinal extent and each having a circular end for receiving the mounting studs with i said second member nested between saidone member and said plate-like member, said slots having an elongated portion extending from the receiving end with theparallel edges of said elongated portion having an inclination relative to the planar surface, said inclined parallel edges engaging the mounting studs in a progressively tighter assembly during movement of the mounting clamp relative to the two members, ratchet means for locking the engagement of said inclined parallel edges with said mounting studs, and means for unlocking said last named engagement.
- a mounting clamp in the form of a plate-like member having a generally planar surface with a central aperture surrounded by a rim portion, said rim portion having a slot formed therein for receiving each of the mounting studs and the screw means with said second member being nested between said one member and said plate-like member, finger engaging tab members extending axially outwardly therefrom for effecting movement of said mounting clamp and ratchet means having a resilient free end portion, said slots being arcuate in their longitudinal extent with the mounting stud receiving slots being key-shaped and each having a circular end and an elongated portion extending therefrom, and with the parallel edges of said elongated portion having an inclination relative to the planar surface, said inclined parallel edges engaging the mounting studs in a progressively tighter assembly during movement of the mounting clamp relative to the two members between a release position and a lock position; and
- a lock element which engages the screw means and the resilient free end portion of said ratchet means, and prevents the movement of said mounting clamp from said lock position to said release position.
- said ratchet means is mounted to said mounting clamp such that its free end extends generally parallel to the planar surface of said mounting clamp, wherein said free end is provided with an arcuate shape having teeth formed on its convex surface, and wherein said lock element comprises a cylindrical member having a threaded internal bore and teeth formed on its outer surface, which engage the teeth formed on the convex surface of said free end to effect locking of the two members with the mounting clamp.
- a print head having a planar surface
- a carriage for moving said head and having a planar surface
- said carriage having a plurality of holes passing through its planar surface
- a mounting clamp for securing said print head and carriage together at their planar surfaces
- said print head having a plurality of mounting studs extending from its planar surface for passing through corresponding ones of said holes in said second member, each of said studs having an undercut portion near its free end to define a head with a shoulder
- said clamp comprising a plurality of elongated apertures, each of said apertures comprising an enlarged opening at one end to receive the head of a respective one of said studs after passage through a respective hole in said carriage, each of said elongated apertures having associated therewith a ramp section offset from the aperture in the direction of the stud passage through the aperture and oriented substantially in the direction of the aperture elongation such that upon turning of the clamp the shoulder of each stud is caused to ride up the ramp to force the print head and carriage
- a mounting clamp for securing first and second members together at their planar surfaces wherein said second member comprises ratchet teeth and a plurality of holes passing through its planar surface and said first member has a plurality of mounting studs extending from its planar surface for passing through corresponding ones of said holes in said second member, and each of said studs has an undercut portion near its free end to define a head with a shoulder, said clamp comprising a plurality of elongated apertures, each of said apertures comprising an enlarged opening at one end to receive the head of a respective one of said studs after passage through a respective hole in said second member, each of said elongated apertures having associated therewith a ramp section offset from the aperture in the direction of the stud passage through the apertures and oriented substantially in the direction of the aperture elongation such that upon turning of the clamp the shoulder of each stud is caused to ride up the ramp to force the first and second member together, said clamp having a peripheral tab portion carrying ratchet teeth for meshing with corresponding
Abstract
Description
Claims (16)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US489599A US3921780A (en) | 1974-07-18 | 1974-07-18 | Assembly for mounting a print head |
CA229,456A CA1047309A (en) | 1974-07-18 | 1975-06-13 | Assembly for mounting a print head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US489599A US3921780A (en) | 1974-07-18 | 1974-07-18 | Assembly for mounting a print head |
Publications (1)
Publication Number | Publication Date |
---|---|
US3921780A true US3921780A (en) | 1975-11-25 |
Family
ID=23944501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US489599A Expired - Lifetime US3921780A (en) | 1974-07-18 | 1974-07-18 | Assembly for mounting a print head |
Country Status (2)
Country | Link |
---|---|
US (1) | US3921780A (en) |
CA (1) | CA1047309A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3998315A (en) * | 1976-02-02 | 1976-12-21 | Sci Systems, Inc. | Rotor structure for rotary electrical printer |
FR2369095A1 (en) * | 1976-10-28 | 1978-05-26 | Siemens Ag | MAGNET DEVICE, LOCATED IN A PRINT HEAD OF A DOT PRINTER |
FR2413976A1 (en) * | 1978-01-05 | 1979-08-03 | Triumph Werke Nuernberg Ag | FIXING A PRINTER HEAD WITH NEEDLES ON ITS SUPPORT |
US4229114A (en) * | 1979-02-12 | 1980-10-21 | Dataproducts Corporation | Mechanism for operator-replaceable printhead |
US4381896A (en) * | 1980-10-20 | 1983-05-03 | Centronics Data Computer Corporation | Print head mounting assembly with form adjustment |
US4452542A (en) * | 1980-09-25 | 1984-06-05 | Epson Corporation | Serial printer |
EP0133943A2 (en) * | 1983-07-29 | 1985-03-13 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Plate cylinder, especially for flexography |
US4685816A (en) * | 1985-12-06 | 1987-08-11 | Ncr Corporation | Impact printer with means for adjusting the associated print hammer |
US4755068A (en) * | 1987-01-30 | 1988-07-05 | Dh Technology, Inc. | Dot matrix print head assembly |
US4810114A (en) * | 1980-04-18 | 1989-03-07 | Xerox Corporation | Print wheel with self-contained means for print wheel alignment |
EP0332863A2 (en) * | 1988-03-15 | 1989-09-20 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Mounting of a print head |
US4905537A (en) * | 1983-02-12 | 1990-03-06 | Shimano Industrial Company Limited | Speed-changing device for a bicycle |
US4950092A (en) * | 1987-11-10 | 1990-08-21 | Oki Electric Industry Co., Ltd. | Wire dot print head with a pair of guide nose halves |
US5688030A (en) * | 1996-08-09 | 1997-11-18 | Dell Usa Lp | Electronic equipment enclosure with support members |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US977472A (en) * | 1909-07-10 | 1910-12-06 | Herbert M Pilkington | Hose-coupling. |
US1148824A (en) * | 1915-04-22 | 1915-08-03 | Rudolf W Boje Jr | Hose-coupling. |
US2819028A (en) * | 1956-10-15 | 1958-01-07 | Gen Electric | Waste disposal apparatus |
US2907242A (en) * | 1958-05-12 | 1959-10-06 | Richard O Chakroff | Power-operated, gear-driven pipe or tube coupling device |
US3188730A (en) * | 1964-01-15 | 1965-06-15 | Chicago United Products Compan | Method of finishing automobile panel and securing trim thereto |
US3789969A (en) * | 1972-04-06 | 1974-02-05 | Centronics Data Computer | High speed printer |
US3854564A (en) * | 1970-06-17 | 1974-12-17 | Logabax | Printing heads for printing machines |
-
1974
- 1974-07-18 US US489599A patent/US3921780A/en not_active Expired - Lifetime
-
1975
- 1975-06-13 CA CA229,456A patent/CA1047309A/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US977472A (en) * | 1909-07-10 | 1910-12-06 | Herbert M Pilkington | Hose-coupling. |
US1148824A (en) * | 1915-04-22 | 1915-08-03 | Rudolf W Boje Jr | Hose-coupling. |
US2819028A (en) * | 1956-10-15 | 1958-01-07 | Gen Electric | Waste disposal apparatus |
US2907242A (en) * | 1958-05-12 | 1959-10-06 | Richard O Chakroff | Power-operated, gear-driven pipe or tube coupling device |
US3188730A (en) * | 1964-01-15 | 1965-06-15 | Chicago United Products Compan | Method of finishing automobile panel and securing trim thereto |
US3854564A (en) * | 1970-06-17 | 1974-12-17 | Logabax | Printing heads for printing machines |
US3789969A (en) * | 1972-04-06 | 1974-02-05 | Centronics Data Computer | High speed printer |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3998315A (en) * | 1976-02-02 | 1976-12-21 | Sci Systems, Inc. | Rotor structure for rotary electrical printer |
FR2369095A1 (en) * | 1976-10-28 | 1978-05-26 | Siemens Ag | MAGNET DEVICE, LOCATED IN A PRINT HEAD OF A DOT PRINTER |
FR2413976A1 (en) * | 1978-01-05 | 1979-08-03 | Triumph Werke Nuernberg Ag | FIXING A PRINTER HEAD WITH NEEDLES ON ITS SUPPORT |
US4239402A (en) * | 1978-01-05 | 1980-12-16 | Triumph Werke Nurnberg A.G. | Detachable wire matrix print head mounting structure |
US4229114A (en) * | 1979-02-12 | 1980-10-21 | Dataproducts Corporation | Mechanism for operator-replaceable printhead |
US4810114A (en) * | 1980-04-18 | 1989-03-07 | Xerox Corporation | Print wheel with self-contained means for print wheel alignment |
US4452542A (en) * | 1980-09-25 | 1984-06-05 | Epson Corporation | Serial printer |
US4381896A (en) * | 1980-10-20 | 1983-05-03 | Centronics Data Computer Corporation | Print head mounting assembly with form adjustment |
US4905537A (en) * | 1983-02-12 | 1990-03-06 | Shimano Industrial Company Limited | Speed-changing device for a bicycle |
EP0133943A2 (en) * | 1983-07-29 | 1985-03-13 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Plate cylinder, especially for flexography |
US4587901A (en) * | 1983-07-29 | 1986-05-13 | Officine Meccaniche G. Cerutti S.P.A. | Plate holding roller particularly for flexographic printing applications |
EP0133943A3 (en) * | 1983-07-29 | 1987-04-15 | OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. | Plate cylinder, especially for flexography |
US4685816A (en) * | 1985-12-06 | 1987-08-11 | Ncr Corporation | Impact printer with means for adjusting the associated print hammer |
US4755068A (en) * | 1987-01-30 | 1988-07-05 | Dh Technology, Inc. | Dot matrix print head assembly |
US4950092A (en) * | 1987-11-10 | 1990-08-21 | Oki Electric Industry Co., Ltd. | Wire dot print head with a pair of guide nose halves |
EP0332863A2 (en) * | 1988-03-15 | 1989-09-20 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Mounting of a print head |
EP0332863A3 (en) * | 1988-03-15 | 1990-01-17 | Nixdorf Computer Aktiengesellschaft | Mounting of a print head |
US5688030A (en) * | 1996-08-09 | 1997-11-18 | Dell Usa Lp | Electronic equipment enclosure with support members |
Also Published As
Publication number | Publication date |
---|---|
CA1047309A (en) | 1979-01-30 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: GENICOM CORPORATION THE, A DE CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO LICENSE RECITED.;ASSIGNOR:GENERAL ELECTRIC COMPANY A NY CORP.;REEL/FRAME:004204/0184 Effective date: 19831021 Owner name: GENICOM CORPORATION THE,, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GENERAL ELECTRIC COMPANY A NY CORP.;REEL/FRAME:004204/0184 Effective date: 19831021 |
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Owner name: CHEMICAL BANK, A NY BANKING CORP., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:GENICOM CORPORATION, A CORP. OF DE.;REEL/FRAME:005370/0360 Effective date: 19900427 |
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Owner name: GENICOM CORPORATION, GENICOM DRIVE, WAYNESBORO, VA Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CHEMICAL BANK;REEL/FRAME:005521/0662 Effective date: 19900926 Owner name: FIDELCOR BUSINESS CREDIT CORPORATION, 810 SEVENTH Free format text: SECURITY INTEREST;ASSIGNOR:GENICOM CORPORATION;REEL/FRAME:005521/0609 Effective date: 19900925 |