An automatic paper feeder for use with a character printer, the feeder having a dual cartridge capability and, alternatively, the capability of feeding envelopes to the printer. The feeder is constructed so that cut sheets or envelopes leaving the printer are delivered to a receiving station in a first...http://www.google.co.uk/patents/US4388008?utm_source=gb-gplus-sharePatent US4388008 - Automatic paper feeder
