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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 12541158 B1

PDFFull Text
Date of Patent:
Feb. 03, 2026

Filed:

Nov. 23, 2022

Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

Applicant:

Fujifilm Business Innovation Corp., Tokyo, JP;

Inventors:

Takashi Inukai, Kanagawa, JP;

Atsushi Sugawara, Kanagawa, JP;

Kazutsuna Sasaki, Kanagawa, JP;

Yoshimasa Fujihara, Kanagawa, JP;

Assignee:

FUJIFILM Business Innovation Corp., Tokyo, JP;

Attorney:

JCIPRNET

Primary Examiner:

Peter L Vajda

Int. Cl.
CPC ...
G03G 9/087 (2006.01); G03G 9/08 (2006.01); G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 9/08788 (2013.01); G03G 9/0819 (2013.01); G03G 9/0827 (2013.01); G03G 9/08711 (2013.01); G03G 9/08755 (2013.01); G03G 9/08764 (2013.01); G03G 15/0865 (2013.01);
Abstract

A toner for electrostatic charge image development includes toner particles, the toner particles containing a binder resin containing a vinyl resin and a release agent containing an ester wax, in which in sections of the toner particles, a number average of equivalent circle diameters of sections of domains of the release agent is 0.10 μm or more and 1.5 μm or less, and a standard deviation of the equivalent circle diameters is more than 0.05 and 0.5 or less.

Find Patent Forward Citations

Inukai, Takashi. (2026). Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method (U.S. Patent No. 12541158). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12541158

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

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