| 摘要 |
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.
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