Image forming apparatus

Details Image forming apparatus Image forming apparatus

1991-02-19

1993-03-23

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355208, 355271, 355274, G03G 1502, G03G 1514

Patent

active

051968851

ABSTRACT:
An image forming apparatus includes an image forming device for forming an image on a recording material, the image forming device including an image bearing member, a movable charging member for charging the image bearing member and a power source for supplying electric power to the charging member; a constant current controller for supplying the charging member with a predetermined constant level of electric current; and a second controller for controlling an image forming condition by the image forming device on the basis of plural voltage provided at different points of time during a constant current control operation with the same constant current level by the constant current controller.

REFERENCES:
patent: 3781105 (1973-12-01), Meagher
patent: 3837741 (1974-09-01), Spencer
patent: 4496238 (1985-11-01), Tsukada et al.
patent: 4977430 (1990-12-01), Florack et al.
patent: 5034777 (1991-07-01), Ohzeki et al.
patent: 5132738 (1992-07-01), Nakamura et al.
Patent Abstracts of Japan, vol. 10, No. 162 (P-466) [2218] Jun. 10, 1986, Abstract of Japanese Laid-Open Patent Application No. 61-14671 published Jan. 22, 1986.

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