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:
May. 22, 2018
Filed:
Nov. 01, 2016
Satoshi Kojima, Kanagawa, JP;
Satoshi Takahashi, Kanagawa, JP;
Tatsuru Moritani, Shizuoka, JP;
Shosuke Aoai, Kanagawa, JP;
Tatsuki Yamaguchi, Kanagawa, JP;
Satoshi Kojima, Kanagawa, JP;
Satoshi Takahashi, Kanagawa, JP;
Tatsuru Moritani, Shizuoka, JP;
Shosuke Aoai, Kanagawa, JP;
Tatsuki Yamaguchi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner includes a toner base particle including a binder resin; a release agent; and an inorganic fine particle, and an external additive. The inorganic fine particle is silica having an average abundance ratio at the surface of the toner base particle of from 70% to 90%. The toner base particle has a BET specific surface area of from 1.0 m/g to 2.5 m/g after the external additive is removed from the toner.