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:
Mar. 26, 2019
Filed:
Nov. 08, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Kohei Yamauchi, Osaka, JP;
Hiroki Uemura, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
Toner particles contain a non-crystalline polyester resin. The toner particles further contain 10 parts by mass to 30 parts by mass of a crystalline polyester resin, 30 parts by mass to 50 parts by mass of a styrene-acrylic acid-based resin, and 8 parts by mass to 15 parts by mass of an ester wax relative to 100 parts by mass of the non-crystalline polyester resin. The crystalline polyester resin includes a repeating unit derived from an acrylic acid-based monomer and a repeating unit derived from a styrene-based monomer. The styrene-acrylic acid-based resin includes a repeating unit derived from an acrylic acid-based monomer having an amino group and has an amino group ratio of 40% to 60%. The ester wax in the toner particles has a dispersion diameter of 500 nm to 1,000 nm.