Image forming apparatus switching developing rollers of...

Details Image forming apparatus switching developing rollers of... Image forming apparatus switching developing rollers of...

2007-04-03

2007-04-03

Grainger, Quana (Department: 2852)

Electrophotography

Image formation

Development

C399S045000

Reexamination Certificate

active

11030040

ABSTRACT:
A color electrophotographic image forming apparatus for forming an image on a recording material, includes (i) a mounting portion for detachably mounting process cartridges developing images with different colors and each including an electrophotographic photosensitive drum and a developing roller for developing an latent image formed on the drum, wherein roller is movable between a contact state contacting the drum and a spaced state spaced from the drum; (ii) a switching device switching the rollers between the contact and spacing states; (iii) a feeding belt for feeding the recording material along all of the drums; (iv) a controller for switching between a first monochrome mode in which the belt contacts all of the drums and a second monochrome mode in which the belt contacts only the drum of the cartridge which develops the latent image for image formation.

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