Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1985-03-18
1987-06-02
Prescott, A. C.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 3R, 355 14C, G03G 1500
Patent
active
046698620
ABSTRACT:
An image forming apparatus comprises a rotating drum, a plurality of processing means including means for charging and discharging the rotating drum, a pulse generator for controlling timing of at least one of the processing means and means for starting the charging and discharging means after having checked a normal condition of the rotating drum when a start of image formation instruction has been issued.
REFERENCES:
patent: 4072415 (1978-02-01), Inoue et al.
patent: 4162396 (1979-07-01), Howard et al.
patent: 4203663 (1980-05-01), Ogura et al.
patent: 4206995 (1980-06-01), Legg
patent: 4270860 (1981-06-01), Tsuda et al.
patent: 4280763 (1981-07-01), Arai et al.
patent: 4322847 (1982-03-01), Dodge et al.
Masuda Shunichi
Sato Yukio
Yagasaki Toshiaki
Canon Kabushiki Kaisha
Prescott A. C.
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