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:
Jun. 18, 1991
Filed:
Jan. 23, 1989
Applicant:
Inventors:
Kiyoshi Emori, Osaka, JP;
Hiroshi Maekawa, Osaka, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; G03G / ; G03G / ;
U.S. Cl.
CPC ...
358300 ; 355245 ; 355328 ;
Abstract
An improved developing unit switching device for a printer capable of providing a multicolor copy from one formation of latent electrostatic images comprises a photoreceptor drum on which the latent electrostatic images are formed; a rotary encoder for detecting an amount of rotation of the photoreceptor drum; developing units containing toner of at least two colors for providing multicolor copies; and a switching apparatus for switching the respective developing units. The improved device switches respective developing units in response to an output signal from the rotary encoder.