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:
Nov. 22, 2022
Filed:
Mar. 23, 2021
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Koji Takahashi, Chiba, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 5/08 (2006.01); G03G 15/02 (2006.01); G03G 5/05 (2006.01); G03G 5/147 (2006.01);
U.S. Cl.
CPC ...
G03G 5/08 (2013.01); G03G 5/05 (2013.01); G03G 5/0507 (2013.01); G03G 5/0525 (2013.01); G03G 5/14704 (2013.01); G03G 15/0233 (2013.01);
Abstract
Provided is an electrophotographic photosensitive member, which has high abrasion resistance and is resistant to being deeply flawed. Specifically, provided is an electrophotographic photosensitive member comprising a support and a surface layer formed on the support, wherein the surface layer comprises at least inorganic particles having pores in surfaces thereof, wherein at least a resin in the surface layer penetrates the pores, and wherein when vibration having a frequency of 0.5 Hz is applied to the surface layer at 28° C., the loss tangent tan δ of the dynamic viscoelasticity of the surface layer is from 0.005 to 0.05.