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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 12306582 B1

PDFFull Text
Date of Patent:
May. 20, 2025

Filed:

Nov. 12, 2020

Carrier for forming electrophotographic image, developer for forming electrophotographic image, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridge

Applicants:

Masashi Nagayama, Shizuoka, JP;

Kousuke Suzuki, Shizuoka, JP;

Masahiro Seki, Nara, JP;

Hiroyuki Kishida, Shizuoka, JP;

Namie Suzuki, Shizuoka, JP;

Inventors:

Masashi Nagayama, Shizuoka, JP;

Kousuke Suzuki, Shizuoka, JP;

Masahiro Seki, Nara, JP;

Hiroyuki Kishida, Shizuoka, JP;

Namie Suzuki, Shizuoka, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:

Grüneberg and Myers PLLC

Primary Examiner:

Stewart A Fraser

Int. Cl.
CPC ...
G03G 9/113 (2006.01); G03G 9/107 (2006.01); G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 9/1139 (2013.01); G03G 9/1085 (2020.08); G03G 15/0808 (2013.01);
Abstract

A carrier can be used for forming an electrophotographic image. The carrier contains a core particle and a coating layer coating the core particle. The coating layer contains a chargeable particle. The carder has an internal void ratio of 0.0% or greater but less than 2.0%, and an apparent density of 2.0 g/cmor greater but less than 2.5 g/cm.

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Nagayama, Masashi. (2025). Carrier for forming electrophotographic image, developer for forming electrophotographic image, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridge (U.S. Patent No. 12306582). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12306582

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