Photocopying – Including fiber optics
Patent
1986-02-11
1988-09-13
Hix, L. T.
Photocopying
Including fiber optics
355 14R, 355 69, 355 77, 307 66, G03G 1300, G03B 2772
Patent
active
047713127
ABSTRACT:
An image forming apparatus such as a copying apparatus comprises: image forming means; a chargeable secondary battery to supply an electric power to the image forming means; a detector to detect a voltage of the battery; and a DC power supply to supply an electric power to the image forming means. The DC power supply is obtained by rectifying and smoothing an AC voltage of an AC power supply. A supply voltage to the image forming means from the battery is controlled in accordance with the presence or absence of the AC power supply. When the battery voltage drops to a value below a predetermined value, the voltage drop is informed to the operator by an indicator and the image forming operation is completed and then stopped. When the AC power supply is used, the discharge current from the battery and the current from the DC power supply are synthesized and this synthetic current is supplied to the image forming means during the image forming operation. When the image forming means is in the inoperative mode, only the current from the DC power supply is supplied to the image forming means.
REFERENCES:
patent: 3387141 (1968-06-01), Howald
patent: 3784892 (1974-01-01), Zelina
patent: 4028596 (1977-06-01), Weber
patent: 4060709 (1977-11-01), Hanson
patent: 4504134 (1985-03-01), Nozaki et al.
Takayanagi Yoshiaki
Yanase Masao
Canon Kabushiki Kaisha
Hix L. T,.
Rutledge D.
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