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. 28, 2020
Filed:
Jul. 19, 2019
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Kumiko Kameya, Tokyo, JP;
Tomoko Nakagawa, Tokyo, JP;
Yuki Narukawa, Tokyo, JP;
Masaya Ota, Tokyo, JP;
Tetsuharu Yuge, Tokyo, JP;
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Abstract
The present invention relates to an electrostatic charge image developing toner, wherein when a tan δ measurement is performed twice by a rheometer, in the first measurement, a tan δ value measured at 130° C. is set as TP(130° C.), and a tan δ value measured at 140° C. is set as TP(140° C.), in the second measurement, a tan δ value measured at 140° C. is set as TP(140° C.), TP(140° C.)/TP(140° C.) is equal to or smaller than 0.95, and TP(130° C.) is equal to or greater than 2.5.