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:
Aug. 05, 2014
Filed:
Jan. 17, 2013
Osamu Uchinokura, Shizuoka, JP;
Tomoyuki Satoh, Kanagawa, JP;
Takahiro Honda, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Mamoru Hozumi, Miyagi, JP;
Osamu Uchinokura, Shizuoka, JP;
Tomoyuki Satoh, Kanagawa, JP;
Takahiro Honda, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Mamoru Hozumi, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide a toner, which contains: toner base particles each containing a binder resin and a colorant; and an external additive containing inorganic particles and fatty acid metal salt particles, wherein the inorganic particles contain at least hydrophobic silica particles, wherein a liberation ratio Ya of the hydrophobic silica particles from the toner is 1% by mass to 20% by mass, and wherein a libration ratio Yb of the fatty acid metal salt particles from the toner is 30% by mass to 90% by mass.