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:
Jul. 25, 2000
Filed:
Jan. 27, 1999
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399284 ; 399274 ;
Abstract
A developer amount regulating member includes at least a portion for regulating the amount of a developer, which is made of a polyamide elastomer. The content of a polyamide dimer in the polyamide elastomer is decreased to less than 2500 ppm, thereby suppressing blooming of the oligomer component in long-term use or an environment of high temperature and high humidity, and maintaining the good specularity of the regulating member. Therefore, it is possible to prevent the problem of fogging due to blooming, and provide a high-quality image.