Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-01-16

2007-01-16

Chen, Sophia S. (Department: 2852)

Electrophotography

Machine operation

Job mode

C399S038000, C399S043000, C399S085000, C399S299000

Reexamination Certificate

active

11401312

ABSTRACT:
The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.

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