Photocopying – Contact printing – Light boxes
Patent
1994-04-15
1995-11-28
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
271228, 271259, 271280, 271298, 355204, 355207, 355208, 355316, 355317, 355321, G03G 2100
Patent
active
054712904
ABSTRACT:
An image forming apparatus for continuously feeding sheets and transferring images thereon, includes an endless type rotatable image forming body, an image forming unit for forming an image on the image forming body, a transfer unit for transferring the image on the image forming body onto a sheet being fed, a feeding unit for feeding the sheet, a first position detector for detecting the sheet being fed at a first predetermined position in a feeding path of the sheet, and a second position detector, located on a side of the transfer unit at a second predetermined position, for detecting the sheet being fed. A control unit is provided for controlling a feeding speed of the feeding unit to compensate for a transfer position of the sheet, in accordance with a measured feeding time from the first predetermined position to the second predetermined position based on outputs of the first and second position detectors.
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patent: 4971304 (1990-11-01), Lofthus
patent: 5018718 (1991-05-01), Matsuno et al.
patent: 5043771 (1991-08-01), Shibata et al.
patent: 5094442 (1992-03-01), Kamprath et al.
patent: 5112038 (1992-05-01), Dunaway
patent: 5169140 (1992-12-01), Wenthe, Jr.
patent: 5197726 (1993-03-01), Nogami
Harada Fumiaki
Inuyama Seiji
Nagayama Masato
Ohshita Makoto
Sawada Kenji
Fujitsu Limited
Smith Matthew S.
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