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:
May. 23, 1989
Filed:
Oct. 28, 1988
Applicant:
Inventor:
Jun Azuma, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
346160 ; 355211 ; 355233 ;
Abstract
The present invention prevents a particular portion of a drum-like image bearing member from being physically damaged or chemically deteriorated by the image bearing member being reciprocally moved in the direction of the rotational axis thereof. For this purpose, the rotational movement of a rotary shaft driving the image bearing member is utilized to produce a force for moving the image bearing member in the direction of the rotational axis.