US Patent No: 7,796,936

Number of patents in Portfolio can not be more than 2000

Image forming device with multimode duplexer




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An image forming device in a color printer or the like includes duplex printing. Multiple media sheets are moved through a media path which includes a primary path and a duplex path. Various parameters of the image forming device control the interpage gap between sheets. Parameters include peek-a-boo duplexing, sharing of motors within the drive rollers, and sharing of power supplies.

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Inventor Name Address # of filed Patents Total Citations
Carter, Daniel L Georgetown, US 38 256
Cook, William Paul Lexington, US 51 515

Cited Art Landscape

Patent Info (Count) # Cites Year
4,488,801 Maximum throughput duplexing system for xerographic machines 14 1983
Minolta Co., Ltd. (1)
5,703,693 Digital copy machine allowing duplex copying in short time through novel recirculation timing 19 1994
6,069,704 Method of scheduling a sequence of pages to be printed with a duplex printer 12 1997
4,918,490 Batch mode duplex printing 47 1989
5,095,342 Methods for sheet scheduling in an imaging system having an endless duplex paper path loop 182 1990
5,159,395 Method of scheduling copy sheets in a dual mode duplex printing system 162 1991
5,184,185 Method for duplex printing scheduling system combining finisher interset skipped pitches with duplex sheet scheduling 31 1991
5,504,568 Print sequence scheduling system for duplex printing apparatus 160 1995
5,729,790 Operation scheduling system for a digital printing apparatus using a tree of possible schedules 22 1997
5,812,273 Operation scheduling system for a digital printing apparatus, using a table of executed operations to revise a schedule in real time 17 1997
6,097,500 Operation scheduling system for a digital printing apparatus, where new constraints can be added 18 1998
5,930,577 Registering images on the front and on the back of a substrate using high resolution sheet measurement 29 1998
6,064,840 Method and apparatus for scheduling duplex copy jobs by shifting copy sheet into an available pitch to create a skipped pitch between copy sets 4 1999
4,990,965 Image forming apparatus having duplex unit 26 1989
5,095,371 Duplex image forming system with number of single side printed sheets in feed path selected before printing second side 27 1990
5,132,719 Method and apparatus for duplex printing wherein the interleave number changes in response to detected sheet length change 14 1991
6,411,795 Image forming apparatus with a two-sides image forming operation 16 2001
Canon Kabushiki Kaisha (1)
6,539,198 Image forming apparatus, control method of the image forming apparatus and storage medium 10 2001
* Cited By Examiner

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