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:
Mar. 28, 2017
Filed:
Jul. 31, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Shotaro Nomura, Suntou-gun, JP;
Koji Nishikawa, Susono, JP;
Kosuke Fukudome, Tokyo, JP;
Daisuke Yoshiba, Suntou-gun, JP;
Shohei Tsuda, Suntou-gun, JP;
Hiroki Akiyama, Toride, JP;
Katsuhisa Yamazaki, Numazu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
To provide a toner from which an image having a stable image density can be obtained with reduced occurrence of pollution of members, even when a toner container is filled with a larger amount of toner than a conventional amount for long-term use. A toner including a toner particle and an external additive containing an organic-inorganic composite fine particle and an inorganic fine particle A; wherein the organic-inorganic composite fine particle includes a resin particle and an inorganic fine particle B, the resin particle has a surface with a convex derived from the inorganic fine particle B; has a specific number average particle diameter (D1) and a specific shape factor SF-2; and has a specific fixed state to the toner particle; the organic-inorganic composite fine particle has a specific unit diffusion index on the toner particle surface; the inorganic fine particle A has a specific BET specific surface area.