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. 18, 2014
Filed:
Apr. 18, 2012
Osamu Uchinokura, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Junichi Awamura, Shizuoka, JP;
Teruki Kusahara, Shizuoka, JP;
Daisuke Ito, Kanagawa, JP;
Daisuke Inoue, Shizuoka, JP;
Osamu Uchinokura, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Junichi Awamura, Shizuoka, JP;
Teruki Kusahara, Shizuoka, JP;
Daisuke Ito, Kanagawa, JP;
Daisuke Inoue, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A set of toners including yellow, cyan, magenta, and black toner, each of which containing a binder resin containing a crystalline resin and a non-crystalline resin, a releasing agent, and a corresponding coloring agent, wherein the following relationship is satisfied: 0.8<EBk/EFc<0.95, where EBk represents the amount of heat of melting (mJ/mg) for the black toner and EFc represents the average amount of heat of melting (mJ/mg) of the yellow toner, magenta toner, and cyan toner from 50° C. to 100° C. at the first temperature rising in differential scanning calorimetry (DSC).