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:
Oct. 01, 2019
Filed:
Jan. 20, 2016
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Abstract
The invention relates to a polyester resin for toner to be used in the development of an electrostatic image or magnetic latent image in electrophotography, electrostatic recording, electrostatic printing, or the like, a method for producing a polyester resin for toner, and a toner, and an object of the invention is to provide, with excellent productivity and stability, a polyester resin for toner having excellent storage stability, hot offset resistance, and low temperature fixing property as toner while still considering the environmental protection and safety. A polyester resin for toner contains 40 mol % or more and 60 mol % or less of structural units derived from tri- or higher hydric carboxylic acids based on 100 mol % of structural units derived from all acid components, and has a metal content of 100 ppm or less.