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. 12, 1989
Filed:
May. 04, 1988
Shinji Kubo, Nagoya, JP;
Ryo Funato, Nagoya, JP;
Noriyuki Tajiri, Toyohashi, JP;
Hirokazu Ito, Toyohashi, JP;
Hitoshi Iwasaki, Toyohashi, JP;
Mitsubishi Rayon Company, Tokyo, JP;
Abstract
A polyester resin for toner, which consists essentially of (a) from 0.5 to 50 mol %, based on the entire alcohol components, of at least one trihydric or higher polyhydric alcohol, (b) from 50 to 99.5 mol %, based on the entire alcohol components, of at least one diol and (c) at least one member selected from the group consisting of dicarboxylic acids and lower alkyl esters thereof, and which has a softening temperature of from 90.degree. to 170.degree. C., a glass transition temperature (Tg) of from 30.degree. to 70.degree. C., an acid value of from 0.5 to 15 mgKOH/g and a gel content of from 1.5 to 40%.