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. 14, 2017
Filed:
Oct. 14, 2015
Konica Minolta, Inc., Tokyo, JP;
Hiroshi Nagasawa, Hachioji, JP;
Noboru Ueda, Mitaka, JP;
Kouji Sugama, Musashino, JP;
Anju Hori, Hachioji, JP;
Keisuke Asano, Hachioji, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
An electrostatic image developing toner includes toner particles that contain a binder resin and a coloring agent. The binder resin includes an amorphous resin and a crystalline polyester resin. The toner satisfies Relations (1) and (2). ΔHis the amount of heat absorption based on a melting peak of the crystalline polyester resin in a first heating step from room temperature to 150° C. ΔHis the amount of heat absorption based on a melting peak of the crystalline polyester resin in a second heating step from 0° C. to 150° C. ΔH(theo.) is a value of fusion enthalpy calculated from a mass ratio of a structural unit derived from a linear aliphatic monomer contained in the binder resin based on a group contribution method.0.2≦Δ1/Δ(theo.)≦0.5  Relation (1):0.1≦Δ2/Δ(theo.)≦0.3  Relation (2):