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:
Apr. 30, 2019
Filed:
Jun. 21, 2016
Takayuki Itoh, Kanagawa, JP;
Naohiro Watanabe, Shizuoka, JP;
Takahiro Honda, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Rintaro Takahashi, Kanagawa, JP;
Ayumi Satoh, Shizuoka, JP;
Takayuki Itoh, Kanagawa, JP;
Naohiro Watanabe, Shizuoka, JP;
Takahiro Honda, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Rintaro Takahashi, Kanagawa, JP;
Ayumi Satoh, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner includes a binder resin; a release agent; and two or more inorganic fine particles as external additives. At least one of the inorganic fine particles is silica. When an ultrasonic oscillation is applied to a dispersion including the toner and a dispersant and a rate of the silica releasing from the toner is 20% based on total silica, an application energy of the ultrasonic oscillation is from 8 to 14 kJ, and from 70 to 130 kJ when the rate of the silica releasing from the toner is 50%.