Photocopying – Contact printing – Light boxes
Patent
1991-11-01
1993-09-21
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355218, 355243, G03G 2100
Patent
active
052473325
ABSTRACT:
A copying machine having a zooming function, the copying machine including a first driving motor for scanning an optical reading system, a first control circuit for controlling the first driving motor, a second driving motor for driving an image forming section including a photosensitive body and for feeding copy paper, a second control circuit for controlling the second driving motor, a side eraser control circuit for controlling the side eraser and switches on a light of a corresponding LED in response to the magnification, and control means for outputting a speed control signal in response to the selected magnification to the first control circuit so as to control the scanning speed of the optical reading system, and outputting a control signal in response to the selected magnification to the side eraser circuit, and outputting a driving signal generated from the control signal to the second control circuit so as to control the second driving motor.
REFERENCES:
patent: 4552447 (1985-11-01), Sagara et al.
patent: 4743944 (1988-05-01), Tomosada et al.
patent: 4825250 (1989-04-01), Miyata et al.
patent: 4980814 (1990-12-01), Hosaka et al.
patent: 5072259 (1991-12-01), Ikeda
Kajiwara Junichi
Mori Masanori
Taniguchi Akihiko
Conlin David G.
Grimley A. T.
Pahl Jr. Henry D.
Ramirez Nestor R.
Sharp Kabushiki Kaisha
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