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:
Apr. 14, 2025
Filed:
Sep. 12, 2019
Zeon Corporation, Tokyo, JP;
Masashi Watanabe, Tokyo, JP;
ZEON CORPORATION, Tokyo, JP;
Abstract
Provided is a magenta toner which shows sharper color and higher reflection density than ever before, which is excellent in balance between low-temperature fixability and heat-resistant shelf stability, and which has excellent printing durability. Also provided is a method for producing the magenta toner. The magenta toner contains a binder resin and a magenta colorant, wherein a magenta pigment A, which is obtained by surface-treating a pigment represented by the following formula (1) with a metal rosinate, is contained as the magenta colorant; wherein a content of the magenta pigment A is from 1 part by mass to 5 parts by mass with respect to 100 parts by mass of the binder resin; and wherein the metal rosinate is contained at from 1 part by mass to 7 parts by mass with respect to 100 parts by mass of the magenta pigment A: