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:
Jan. 05, 2021
Filed:
Mar. 27, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01); G03G 15/16 (2006.01); G03G 15/02 (2006.01); G03G 5/043 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0818 (2013.01); G03G 5/043 (2013.01); G03G 15/0233 (2013.01); G03G 15/1685 (2013.01);
Abstract
The electrophotographic member includes an electro-conductive substrate, a urethane resin having a structure of structural formula (1), an anion, and a resin particle, and has a protrusion derived from the resin particle on an outer surface thereof, the resin particle contains one or both of a urethane resin and a polyamide resin, the resin layer further contains carbon black, and the carbon black extracted from the resin layer has a BET specific surface area of 33 m/g or more and 133 m/g or less, and DBP absorption amount at a 70% torque value in DBP absorption measurement of 42 ml/100 g or more and 90 ml/100 g or less.