Photocopying – Contact printing – Light boxes
Patent
1992-08-07
1994-07-19
Braun, Fred L.
Photocopying
Contact printing
Light boxes
271 31, 271291, 355311, G03G 2100
Patent
active
053313860
ABSTRACT:
A sheet conveyer for conveying a sheet so that an image of a document is duplicated on both sides of the sheet by an image forming machine such as a photocopy machine. The sheet conveyer has; a first conveyance path for conveying the sheet to an image forming section of the image forming machine; a second conveyance path for conveying the sheet from the image forming section to a tray; the tray for holding the sheet; a third conveyance path for conveying the sheet from the tray to the image forming section; and, a pair of nip rollers, located at the vicinity of the tray, for holding the sheet conveyed through the second conveyance path, and forwarding the sheet into the third conveyance path; in which the sheet conveyance apparatus has a first mode that the sheet is forwarded into the third conveyance path by the nip rollers without being placed on the tray, and a second mode that the sheet is once placed on the tray and forwarded into the third conveyance path by the nip rollers.
REFERENCES:
patent: 4652110 (1987-03-01), Sato et al.
patent: 4660963 (1987-04-01), Stemmle
patent: 4745439 (1988-05-01), Hanada et al.
patent: 4853740 (1989-08-01), Ushio et al.
patent: 5155540 (1992-10-01), Yamada et al.
Mizubata Tsuyoshi
Nagoshi Mitsuru
Okui Susumu
Yamada Yasushi
Braun Fred L.
Konica Corporation
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