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:
Nov. 25, 2014
Filed:
Jan. 28, 2013
Daisuke Asahina, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Rintaro Takahashi, Miyagi, JP;
Hiroshi Yamashita, Shizuoka, JP;
Taichi Nemoto, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Satoyuki Sekiguchi, Shizuoka, JP;
Daisuke Asahina, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Rintaro Takahashi, Miyagi, JP;
Hiroshi Yamashita, Shizuoka, JP;
Taichi Nemoto, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Satoyuki Sekiguchi, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrostatic image forming toner including: toner base particles each containing at least a colorant, a binder resin, and a releasing agent, wherein the binder resin contains a non-crystalline polyester resin A and a crystalline polyester resin B, wherein a ratio of B/(A+B)×100 is 10 or more but less than 50 where (A+B) is a total mass of the non-crystalline polyester resin A and the crystalline polyester resin B and 'B' is a mass of the crystalline polyester resin B, and wherein the toner base particles have a TMA compression deformation amount (TMA %) of 10% or less which is measured at 50° C. and a relative humidity of 90%.