Photocopying – Contact printing – Light boxes
Patent
1994-07-19
1996-04-09
Brase, Sandra L.
Photocopying
Contact printing
Light boxes
355204, G03G 2100
Patent
active
055066623
ABSTRACT:
The copying machine has a charge partially erasing device for limiting a region of the photosensitive drum, in which an electrostatic latent image can be formed. The charge partially erasing device includes a plurality of LED elements arranged in the direction of the axis of the photosensitive drum, and the LED elements are turned on in accordance with data stored in the ROM in a predetermined order. The data stored in the ROM can be read out at all times as the document size key of the operation panel is operated, and the charge supplied on the photosensitive drum is partially erased. Further, the number of times the document size key was operated is counted, and a partial erase pattern is selected based on the number of times the was operated. Thus, a specific partially erased image is achieved by a simple operation.
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Brase Sandra L.
Kabushiki Kaisha Toshiba
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