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. 21, 1989
Filed:
Jun. 13, 1986
Applicant:
Inventor:
Hiroyuki Idenawa, Hiratsuka, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 118657 ; 355 15 ;
Abstract
A developing device including a developing roller having on its surface a layer of developing agent forced against a photosensitive member to perform developing. The developing roller is brought into contact with the photosensitive member under a predetermined pressure when a developing operation is performed, and is brought out of contact with the photosensitive member or kept in contact with the photosensitive member under a pressure lower than the predetermined pressure when no developing operation is performed.