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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 12529972 B1

PDFFull Text
Date of Patent:
Jan. 20, 2026

Filed:

Jun. 24, 2022

Toner

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Dai Nozaki, Shizuoka, JP;

Yoshitaka Suzumura, Shizuoka, JP;

Tomohiro Unno, Shizuoka, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

VENABLE LLP

Primary Examiner:

Peter L Vajda

Assistant Examiner:

Grant Steven Seiler

Int. Cl.
CPC ...
G03G 9/087 (2006.01); G03G 9/08 (2006.01); G03G 9/083 (2006.01); G03G 9/097 (2006.01);
U.S. Cl.
CPC ...
G03G 9/08755 (2013.01); G03G 9/081 (2013.01); G03G 9/0819 (2013.01); G03G 9/0833 (2013.01); G03G 9/08795 (2013.01); G03G 9/09725 (2013.01);
Abstract

A toner comprising a toner particle comprising a binder resin, a nonmagnetic inorganic oxide particle A, and a magnetic iron oxide particle B, wherein a softening point of a chloroform-soluble component of the toner particle is not greater than 90° C.; the nonmagnetic inorganic oxide particle A and the magnetic iron oxide particle B are internally added to the toner particle; the nonmagnetic inorganic oxide particle A comprises as its main component at least one element selected from the group consisting of Si, Mg, Al, Ti, and Sr; a proportion of the inorganic oxide particles having a long diameter of specific length is in specific range; and a value of a ratio of a number-average particle diameter of the long diameter for the nonmagnetic inorganic oxide particle A, to a number-average particle diameter of the long diameter for the magnetic iron oxide particle B, is 5 to 30.

Find Patent Forward Citations

Nozaki, Dai. (2026). Toner (U.S. Patent No. 12529972). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12529972

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

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