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:
Feb. 26, 2013
Filed:
Oct. 08, 2009
Ryota Inoue, Mishima, JP;
Akihiro Kotsugai, Numazu, JP;
Toyoshi Sawada, Hiratsuka, JP;
Akiyoshi Sabu, Numazu, JP;
Ryota Inoue, Mishima, JP;
Akihiro Kotsugai, Numazu, JP;
Toyoshi Sawada, Hiratsuka, JP;
Akiyoshi Sabu, Numazu, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
The toner includes a binder resin; a release agent; a colorant; and a dispersing resin configured to disperse the release agent. The dispersing resin includes a polyhydroxycarboxylic acid unit obtained from an optically active monomer. The polyhydroxycarboxylic acid unit has an optical purity of not greater than 80%, wherein the optical purity is defined as the absolute value of difference between the mole percentage of a L-monomer in the optically active monomer and the mole percentage of a D-monomer in the optically active monomer.