US4929982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet path in an electrophotographic printer
Assignee: Ricoh Production Print Solutions LLC
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Filing: 1989-05-18
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Granted: 1990-05-29
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Expires: 2009-05-18
Abstract
Abstract An electrophotographic printer of the transfer type with separate input bins for holding cut sheet print material and fan-fold form print material. Separate paper paths are provided from each bin to a first function. An input paper path is provided for moving either cut sheet or fan-fold forms from the first function to the transfer station. An output paper path is provided for moving either cut sheet or fan-fold forms from the transfer station through the fuser to a second function. Separate paper paths are provided from the second fuction to stack cut sheet material and fan-fold forms in separate output bins.
Inventors
- 👤 Masayuki Ainoya
- 👤 Takeyuki Ishihara
- 👤 Tesuo Kanno
- 👤 Takahiro Kikuchi
- 👤 Seiichi Mori
- 👤 Shogo Nobumori
- 👤 Junji Shirakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:34
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6517; G03G15/6526; G03G15/14; G03G15/16; G03G15/163; G03G15/1635; G03G15/164; G03G15/6552; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00371; G03G2215/00409; G03G2215/00417; G03G2215/00421; G03G2215/00443; G03G2215/00447; G03G2215/00451; G03G2215/00455; G03G2215/00459; G03G2215/00535; G03G2215/00544
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
An electrophotographic printer comprising a photosensitive drum comprising; a form feeder having means for feeding cut sheets to said photosensitive drum and means for feeding fan-fold forms to said photosensitive drum both means being provided in parallel adjacent to said photosensitive drum; a frame being driven toward said photosensitive drum to allow forms fed by said form feeder to make contact with said photosensitive drum; means provided on said frame for transferring images on said photosensitive drum to the forms made contact with said drum; a conveyor belt for sucking forms from said transfer means with a suction pressure to convey said forms; means for fixing transferred images on the forms conveyed by said conveyor belt; and means for discharging the forms from said fixing means.
Claim 2
Dependent Claim
126 words
An electrophotographic printer comprising a photosensitive drum comprising; a form feeder having means for feeding cut sheets to said photosensitive drum and means for feeding fan-fold forms to said photosensitive drum both means being provided in parallel adjacent to said photosensitive drum; a frame being driven toward said photosensitive drum to allow forms fed by said form feeder to make contact with said photosensitive drum; means provided on said frame for transferring images on said photosensitive drum to the forms made contact with said drum; a conveyor belt for sucking forms from said transfer means with a suction pressure to convey said forms; means for fixing transferred images on the forms conveyed by said conveyor belt; and means for discharging the forms from said fixing means.
Claim 3
Dependent Claim
51 words
An electrophotographic printer as claimed in claim 1, wherein the circumferential speed of said photosensitive drum is controlled to be slightly lower than the conveying speed of the forms when fan-fold forms are used, and to be the same as the conveying speed of the forms when cut sheets are used.
Claim 4
Dependent Claim
27 words
An electrophotographic printer as claimed in claim 2, wherein the rotation of said photosensitive drum is so controlled as to stop when the fan-fold forms are cut.
Claim 5
Dependent Claim
67 words
An electrophotographic printer as claimed in claim 3, further comprising means for driving said frame toward said photosensitive drum so that the gap between the photosensitive drum and the frame when fan-fold forms are used is smaller than the gap between the photosensitive drum and the frame when cut sheets are used, and for driving the frame away from the drum when printing is not being performed.
Claim 6
Dependent Claim
39 words
An electrophotographic printer as claimed in claim 4, wherein said frame is so fabricated that the gap between the photosensitive drum and the frame during printing is larger in the conveyor belt side than in the form feeder side.
Claim 7
Dependent Claim
33 words
An electrophotographic printer as claimed in claim 5, further comprising a presser guide for pushing forms to widen the gap between the photosensitive drum and the forms when printing is not being performed.
Claim 8
Dependent Claim
40 words
An electrophotographic printer as claimed in claim 6, wherein the speed of said conveyor belt in the form conveying direction is so controlled as to be higher when fan-fold forms are used than the speed when cut sheets are used.
Claim 9
Dependent Claim
32 words
An electrophotographic printer as claimed in claim 7, wherein said suction pressure is so controlled as to be higher when cut sheets are used than the pressure when fan-fold forms are used.
Claim 10
Dependent Claim
55 words
An electrophotographic printer as claimed in claim 8, wherein the path in said form discharging means is branched by a first flapper into a cut sheet path and a fan-fold path, and said cut sheet path is branched by a second flapper into a path to a form reversing means and a form forwarding path.
References Cited (Backward Citations)
US3893760A
Cited
US4320952A
Cited
US4191467A
Cited
US4362378A
Cited
JPS5685764A
Cited
US4417800A
Cited
US4466729A
Cited
US4408866A
Cited
EP0217133A1
Cited
US4699496A
Cited
US4714946A
Cited
DE3801201A1
Cited
US4843429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |