Photocopying – Contact printing – Light boxes
Patent
1990-08-01
1992-11-17
Grimley, A. T.
Photocopying
Contact printing
Light boxes
346108, 346160, 355204, 355208, 355271, G03G 1501
Patent
active
051647834
ABSTRACT:
An image forming apparatus has a device for sequentially forming a plurality of images by repeatedly performing an optical writing operation a plurality of times on a photosensitive body face every predetermined timing; a device for sequentially overlapping and transferring the images; a detector for detecting a timing shift from a time point of a command for starting the optical writing operation each time to a start time point of the actual writing operation; and a device for correcting the timing shift to overlap and transfer the images.
REFERENCES:
patent: 4819025 (1989-04-01), Takahashi et al.
patent: 4847660 (1989-07-01), Wheatley, Jr. et al.
patent: 4908675 (1990-03-01), Suzuki
patent: 4947209 (1990-08-01), Maeno et al.
patent: 4959669 (1990-09-01), Heneda et al.
patent: 4975741 (1990-12-01), Tanaka
patent: 5023708 (1991-06-01), Maruyama et al.
Furuta Hideya
Taguchi Kazushige
Grimley A. T.
Horgan Christopher
Ricoh & Company, Ltd.
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