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. 22, 2014
Filed:
Nov. 24, 2009
Saori Yamada, Numazu, JP;
Shinya Nakayama, Numazu, JP;
Hisashi Nakajima, Numazu, JP;
Mitsuo Aoki, Numazu, JP;
Hyo Shu, Numazu, JP;
Hiroyuki Kishida, Numazu, JP;
Saori Yamada, Numazu, JP;
Shinya Nakayama, Numazu, JP;
Hisashi Nakajima, Numazu, JP;
Mitsuo Aoki, Numazu, JP;
Hyo Shu, Numazu, JP;
Hiroyuki Kishida, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner, wherein a binder resin contains a polyester resin (A) produced by polycondensing an alcohol component with a carboxylic acid component which contains a rosin compound in an amount of 5% by mass or more of the total amount by mass of the alcohol component and the carboxylic acid component, and a polyester resin (B) produced by polycondensing an alcohol component containing an alkylene oxide adduct of bisphenol A represented by General Formula (1) given below with a carboxylic acid component, and wherein the toner contains abietic acid in an amount of 0.01% by mass to 1% by mass: