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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.:

US 10712684 B1

PDFFull Text
Date of Patent:
Jul. 14, 2020

Filed:

Aug. 15, 2019

Developing roller, electrophotographic process cartridge and electrophotographic image forming apparatus

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Kazuhito Wakabayashi, Susono, JP;

Kazuaki Nagaoka, Susono, JP;

Ryo Sugiyama, Mishima, JP;

Kunimasa Kawamura, Mishima, JP;

Minoru Nakamura, Mishima, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Venable LLP

Primary Examiner:

Thomas S Giampaolo, Ii

Int. Cl.
CPC ...
G03G 15/08 (2006.01); G03G 21/18 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0808 (2013.01); G03G 21/1814 (2013.01);
Abstract

To provide a developing roller having improved toner conveying force in a high-temperature and high-humidity environment. The developing roller has a substrate and an electro-conductive layer on the substrate. The outer surface of the developing roller has an electrical insulating first region and an electro-conductive second region adjacent to the first region and at the same time has at least one groove in the first region.

Find Patent Forward Citations

Wakabayashi, Kazuhito. (2020). Developing roller, electrophotographic process cartridge and electrophotographic image forming apparatus (U.S. Patent No. 10712684). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10712684

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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