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:
Jul. 17, 2018
Filed:
Feb. 29, 2016
Masahiro Seki, Shizuoka, JP;
Yoshitaka Sekiguchi, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Naoko Kitada, Kanagawa, JP;
Masahiro Seki, Shizuoka, JP;
Yoshitaka Sekiguchi, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Naoko Kitada, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner including a binder resin, wherein the toner includes a tetrahydrofuran (THF)-insoluble component in a range of from 10% by mass through 40% by mass, wherein the toner has a main peak in a range of from 12,000 through 18,000 in a molecular weight distribution of a THF-soluble component as measured by gel permeation chromatography (GPC), wherein the main peak has a half value width in a range of from 20,000 to 50,000, and wherein the toner includes a component having a molecular weight of 2,000 or less in a range of from 10.0% by mass through 20.0% by mass and a component having a molecular weight of 100,000 or more of 8.0% by mass or less.