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. 10, 2020
Filed:
Mar. 05, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Minoru Ito, Suntou-gun, JP;
Sosuke Yamaguchi, Chiba, JP;
Takashi Koyanagi, Mishima, JP;
Takahiro Miyazawa, Numazu, JP;
Shohei Urushihara, Mishima, JP;
Kentarou Nakamura, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The developer carrying member, includes: an electroconductive substrate; and a surface layer containing a resin, on the substrate, in which a thickness of the surface layer is 1.0 μm or more and 100.0 μm or less, a Martens hardness at an indentation depth of 0.1 μm that is measured by infiltrating a Vickers indenter in a thickness direction of the surface layer from an outer surface of the surface layer is 50.0 N/mmor more and 100.0 N/mmor less, an Asker C hardness that is measured from the outer surface of the surface layer is 75° or more and 90° or less, and a value of a work function of the outer surface of the surface layer is 5.6 eV or more and 6.0 eV or less.