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. 28, 1991
Filed:
Nov. 08, 1988
Applicant:
Inventors:
Masatsugu Nakamura, Nara, JP;
Kunio Ohashi, Nara, JP;
Shoichi Nagata, Nara, JP;
Kazuki Wakita, Yao, JP;
Katsuhiro Nagayama, Nara, JP;
Tadashi Tonegawa, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355208 ; 355211 ;
Abstract
Quality of images formed electrophotographically on a photoreceptor is improved by controllingly switching on and off a heater for the photoreceptor such that the photoreceptor temperature remains higher than the measured ambient temperature by several .degree.C. to 20.degree. plus several .degree.C. At the same time, the output of the charger for the photoreceptor or brightness of an image forming lamp is controlled according to the measured surface temperature of the photoreceptor.