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:
Nov. 03, 1998
Filed:
Mar. 14, 1997
Applicant:
Inventors:
Koji Nakayama, Shizuoka, JP;
Haruo Okutani, Shizuoka, JP;
Assignee:
Tomoegawa Paper Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; C08G / ;
U.S. Cl.
CPC ...
528272 ; 528296 ; 430109 ; 430904 ;
Abstract
A polyester resin for a toner, wherein a maximum molecular weight is in a range of 1.times.10.sup.3 to 8.times.10.sup.3, Mw/Mn is in a range of 20 to 200, a proportion of component having a molecular weight of 1.times.10.sup.5 or less is comprised at a range of 80 weight % or greater, and at least one component selected from the group consisting of polycarboxylic acid having more than 3 carboxyl groups and polyalcohol having more than 3 hydroxyl groups.