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:
Jul. 08, 2025
Filed:
Jan. 19, 2022
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/097 (2006.01); C08G 77/08 (2006.01); C08G 77/18 (2006.01); C08K 9/06 (2006.01);
U.S. Cl.
CPC ...
G03G 9/09775 (2013.01); C08G 77/08 (2013.01); C08G 77/18 (2013.01); C08K 9/06 (2013.01); C08K 2201/003 (2013.01);
Abstract
An external additive for toner comprising a particle of a silicon polymer having a siloxane bond and a Si—O—C bond, wherein in an FT-IR spectrum of the external additive obtained by an ATR method, a maximum peak is present in a range of from 1030 cmto 1070 cm, where an average intensity in a range of from 1015 cmto 1025 cmof the spectrum is denoted by A and an average intensity in a range of from 1085 cmto 1095 cmis denoted by B, the A and the B satisfy a following formula (1):