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:
Mar. 15, 1994
Filed:
Feb. 27, 1990
Applicant:
Inventors:
Atsushi Munakata, Yokohama, JP;
Masahiro Itoh, Yokohama, JP;
Akira Watanabe, Yokohama, JP;
Yuji Sakemi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
3553 / ; 355245 ;
Abstract
A developing apparatus having a supporting frame for supporting plural developing units. The supporting frame is movable to present a selected one of the developing units to a development operating position. The supporting frame is provided with positioning members for positioning the developing units. The positioning members are fixed on the movable frame in the manner that the position of the positioning member is adjustable. Each of the developing units is faced to an image bearing member at the operating position without contact to the image bearing member.