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:
Apr. 14, 1992
Filed:
Sep. 11, 1991
Takao Fujiwara, Osaka, JP;
Hideo Kitakubo, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A developing device for color copiers and the like. The developing device has a plurality of developing units, each of which has a developing roller for developing an electrostatic latent image formed on an image carrier; a developing unit switching device for moving the developing units linearly and for selecting one of the developing units to oppose the image carrier; a fixed driving source for generating a driving force to drive the developing rollers; wrapping connecting apparatus which has a wrapping member and movable rotating structure having at least one rotating member and movable together with the developing units, the wrapping connecting apparatus being for conveying the driving force to the movable rotating structure; and a plurality of clutches, each of which is provided for one developing unit and is switched to a first state wherein the clutch conveys the driving force from the movable rotating structure to the developing roller and to a second state wherein there is no conveyance.