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:
Sep. 17, 2019
Filed:
Nov. 05, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Yoshihiro Nakagawa, Numazu, JP;
Tsutomu Shimano, Mishima, JP;
Reo Tagawa, Susono, JP;
Taku Shimoda, Machida, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprising: a toner particle that contains a binder resin and a wax, wherein the binder resin contains a styrene-acrylic copolymer, the content of the styrene-acrylic copolymer in the binder resin is at least 50 mass %, the wax contains a wax A, at least 15.0 mass parts of the wax A compatibilizes at 100° C. with 100 mass parts of a specific styrene—butyl acrylate copolymer, and in a cross section of the toner particle observed using a scanning transmission electron microscope, domains of the wax are present, the average number of the domains is from 20 to 2,000, and using r1 for the average major diameter of the domains and r2 for the average minor diameter of the domains, r1 is from 0.03 μm to 1.00 μm, and the ratio of r1 to r2 is from 1.0 to 3.0.