发明名称 |
Image forming apparatus |
摘要 |
An image-forming apparatus is provided with a photosensitive drum rotatably located in a housing, and a developing device for developing the latent image formed on the surface of the photosensitive drum. A first developing unit of the developing device develops the latent image by a first red developing agent. A second developing unit develops the latent image by a second black developing agent. The first and second developing units are alernatively driven by a switch provided on a control panel which is located on the housing. A copy mode for black is automatically established when the power is turned on or if no operation is performed for a prescribed time after a foregoing copying operation, in a mode for any other color than black, is ended.
|
申请公布号 |
US4814823(A) |
申请公布日期 |
1989.03.21 |
申请号 |
US19870029354 |
申请日期 |
1987.03.23 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
ABUYAMA, YASUO;IDE, FUMITO;HAMANAKA, OSAMU;SANBAYASHI, TAKESHI |
分类号 |
G03G15/01;G03G15/09;G03G21/00;(IPC1-7):G03G15/01 |
主分类号 |
G03G15/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|