The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1989
Filed:
Jan. 03, 1989
Nobutoshi Yoshida, Yokohama, JP;
Nobuyuki Miyake, Yokohama, JP;
Atsushi Takagi, Tokyo, JP;
Takashi Saito, Ichikawa, JP;
Tadashi Suzuki, Yokohama, JP;
Naoyuki Ohki, Tokyo, JP;
Masahiro Tomosada, Kawasaki, JP;
Hideki Adachi, Kawasaki, JP;
Hiroaki Takeda, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is a multi-color copying apparatus having image processing functions which can easily designate arbitrary areas when the trimming or masking is executed. This apparatus comprises: an area designating device to designate the first area of the original; a first developing device to develop the image of the first area in the first color; a second developing device to develop the image of the second area in the second color; and a control circuit for making the first developing device operative without making the second developing device operative in accordance with the designation of the first area and, after completion of the development of the image of the first area, making the second developing device operative without making the first developing device operative. The control circuit inhibits the operation of the first or second developing device by moving the first or second developing device to a position away from the photo sensitive drum, or by applying the bias voltage to the first or second developing device such that the toner from the inoperative developing device is not deposited onto the drum.