Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1974-11-07
1977-03-01
Whitby, Edward E.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
96 1R, 156351, 156366, 156368, 307 2, 355 8, G03G 1528, G03G 1532
Patent
active
040099571
ABSTRACT:
As a scanning element of an electrophotographic copying machine begins to move, a feed roller moves a sheet of copy paper into the bite of register rollers which are held stationary. This movement of the copy paper is accomplished in a period of time which is less than that required for the scanning element to reach a predetermined scan synchronizing point. The feed roller is then stopped so that the copy paper is slightly buckled and thereby resiliently urged into the bite of the register rollers. When the scanning element reaches the scan synchronizing point, a sensor causes the register rollers to rotate thereby feeding the copy sheet through the machine in synchronization with the movement of the scanning element. The copy machine may employ a seamless photoconductive drum or belt moving at constant speed in which case an electrostatic image is formed on the drum or belt by the scanning element. The image is developed by toner particles and transferred to the copy sheet. The copy machine may also be of the type in which the copy sheet itself is photoconductive and is imaged directly by the scanning element.
REFERENCES:
patent: 3602589 (1971-08-01), Dietz
patent: 3655283 (1972-04-01), Marqulis
patent: 3677635 (1972-07-01), Van Auken et al.
patent: 3804512 (1974-04-01), Komori et al.
Iwamoto Minoru
Nishikawa Tatsuo
Noguchi Koichi
Omi Kyoji
Suzuki Shigeru
Jordan Frank J.
Ricoh Co. Ltd.
Whitby Edward E.
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