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. 14, 2026
Filed:
Nov. 06, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Tatsuya Saeki, Shizuoka, JP;
Kenji Aoki, Shizuoka, JP;
Naoya Isono, Shizuoka, JP;
Mariko Yamashita, Shizuoka, JP;
Yuki Masuda, Shizuoka, JP;
Megumi Moriya, Shizuoka, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprises a toner particle, wherein the toner contains a crystalline vinyl resin and an amorphous resin, a weight-average particle diameter of the toner is from 4.0 to 12.0 m, an endothermic quantity ΔH derived from the crystalline vinyl resin is from 10 to 70 J/g, and in an analysis by time-of-flight secondary ion mass spectrometry of the toner particle while under sputtering, with A(100) as the ion amount of a specific hydrocarbon over a sputtering time during which 100 nm of a polymethyl methacrylate standard sample film are shaved, the ion amount exhibits one or more peak values, and with A(d) as a maximum value from among the peak values, the above A(d) and A(100) satisfy the expression below.