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:
Jun. 30, 2020
Filed:
Dec. 28, 2018
Konica Minolta, Inc., Tokyo, JP;
Takaki Kawamura, Hino, JP;
Shiro Hirano, Hachioji, JP;
Junya Onishi, Hachioji, JP;
Ami Motohashi, Hachioji, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
Provided is an electrostatic image developing toner including: toner mother particles containing a binder resin and a releasing agent; and an external additive, wherein the binder resin contains a crystalline resin, and the electrostatic image developing toner satisfies the following formulas (1) and (2),tan δ<tan δ  Formula (1):0.0005≤tan δ−tan δ,  Formula (2):wherein: tan δis a peak top value of a loss tangent when the loss tangent is measured from 25° C. to 100° C. at a frequency of 1 Hz and a heating rate of 6° C./min; and tan δis a peak top value of a loss tangent when the loss tangent is measured from 25° C. to 100° C. at a frequency of 1 Hz and a heating rate of 3° C./min.