Image forming apparatus with power conservation in accordance wi

Details Image forming apparatus with power conservation in accordance wi Image forming apparatus with power conservation in accordance wi

1996-12-18

1999-09-07

Royer, William

Electrophotography

Control of electrophotography process

G03G 1500

Patent

active

059500379

ABSTRACT:
There is disclosed an image forming apparatus using electrophotography including an interface unit allowing the image forming apparatus to be in continual electrical communication with an external data input system; a photodetector for sensing the level of brightness in a room in which the apparatus is located, and generating a signal corresponding thereto; a printing unit having driving mechanisms for paper conveyance and printing, and carrying out a power conservation mode and printing operations; and a controller for controlling the overall operations of the image forming apparatus, electrically communicating with the external data input system by way of the interface unit, and establishing a power conservation mode in which power consumption is lower than that of a standby mode, on receiving a signal reporting that the level of brightness in the room is lower than a standard brightness preset in the system, from the photodetector.

REFERENCES:
patent: 4967212 (1990-10-01), Manabe et al.
patent: 4967284 (1990-10-01), Yoshida et al.
patent: 5134427 (1992-07-01), Akiyama et al.
patent: 5191362 (1993-03-01), Ichikawa
patent: 5241349 (1993-08-01), Nagasaka
patent: 5489935 (1996-02-01), Dornier
English Abstract for Japanese Publication 58-54332, Ushio et al. Patent Abstracts of Japan P204, vol. 7, No. 138, Jun. 16, 1983.
English Abstract for Japanese Publication 5-327959, Osaka, Patent Abstracts of Japan E1523, vol. 18, No. 152, Dec. 10, 1993.

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