Photocopying – Contact printing – Light boxes
Patent
1995-07-31
1996-12-10
Moses, R. L.
Photocopying
Contact printing
Light boxes
347131, G03G 15043, G03G 1506, H04N 121
Patent
active
055836216
ABSTRACT:
An electrophotographic printer capable of maintaining printing quality and economizing toner without formation of white-out portion when toner consumption economizing mode is selected. Ordinary toner consumption mode and toner economizing mode are selectively used. If the toner economizing mode is selected, a shift resistor delays dot pulses from a pulse generating circuit and outputs the delayed shift pulses. An AND gate circuit produces a logical product of the dot pulses and the shift pulses. Thus, ON period of the output pulse can be shortened, thus economizing the toner consumption. Several toner economizing modes are provided so as to control length of ON period of the output pulses.
REFERENCES:
patent: 5144337 (1992-09-01), Imamura et al.
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WPIDS, Acc. No. 96-054916 for JP-A-07314783, May 12, 1995.
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Brother Kogyo Kabushiki Kaisha
Moses R. L.
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