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, 2020
Filed:
Apr. 17, 2018
Ryo Miyakoshi, Shizuoka, JP;
Daisuke Asahina, Shizuoka, JP;
Yoshihiro Moriya, Shizuoka, JP;
Satoshi Kojima, Kanagawa, JP;
Satoshi Takahashi, Kanagawa, JP;
Ryo Miyakoshi, Shizuoka, JP;
Daisuke Asahina, Shizuoka, JP;
Yoshihiro Moriya, Shizuoka, JP;
Satoshi Kojima, Kanagawa, JP;
Satoshi Takahashi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner including polyester, wherein an amount of heat of a peak derived from the polyester in a range of from 40° C. through 70° C. during a cooling process is from 1.0 J/g through 15 J/g in differential scanning calorimetry performed under conditions below, <measuring conditions> after maintaining the toner at −20° C., heating the toner to 130° C. at 10° C./min (a first heating process), after maintaining the toner at 130° C. for 1 minute, cooling the toner to −50° C. at cooling speed of 10° C./min (the cooling process), and after maintaining the toner at −50° C. for 5 minutes, heating the toner to 130° C. at 10° C./min (a second heating process).