Color image forming apparatus

Details Color image forming apparatus Color image forming apparatus

1995-10-24

1996-12-03

Moses, R. L.

Photocopying

Contact printing

Light boxes

355222, 355326R, 430902, G03G 1502

Patent

active

055813313

ABSTRACT:
In a color image forming apparatus, charging, exposure and development are repeated thereby a plurality of color component toner images are formed in superposing on an image carrier and then transferred collectively to an image receptor. As a charging device used in image forming cycle of at least the second color or later, a corona charging device having a discharge electrode and a grid is used. An electrode power source applying at least AC voltage is connected to the discharge electrode, and a grid power source applying AC voltage in nearly the same phase as that of the AC voltage applied to the discharge electrode is connected to the grid, and frequency or peak-to-peak amplitude of the AC voltage from the grid power source is set to optimum range.

REFERENCES:
patent: 5453822 (1995-09-01), Anzai et al.

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