Image forming apparatus

Details Image forming apparatus Image forming apparatus

1993-06-14

1995-02-28

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355204, 355219, 361225, G03G 2100, G03G 1502

Patent

active

053942213

ABSTRACT:
An image forming apparatus includes a microcomputer. The number of image forming operation of a photosensitive drum is counted by a counter as a copy quantity, and data of the copy quantity is applied to the microcomputer. By referring to a copy quantity-voltage table, voltage setting data according to the copy quantity is applied by the microcomputer to a bias voltage source so that the bias voltage source applies a required bias voltage according to the voltage setting data to a conductive substrate of the photosensitive drum.

REFERENCES:
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patent: 4963926 (1990-10-01), Onishi et al.
patent: 4970557 (1990-11-01), Masuda et al.
patent: 4974020 (1990-11-01), Takamatsu et al.
patent: 5029314 (1991-07-01), Katsumi et al.
patent: 5060017 (1991-10-01), Ueda
patent: 5160967 (1992-11-01), Tonegawa
patent: 5181070 (1993-01-01), Masuda
patent: 5225873 (1993-07-01), Lux et al.
patent: 5253017 (1993-10-01), Takeda

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