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. 01, 2014
Filed:
Dec. 04, 2008
Naoki Nishiura, Konan, JP;
Akira Ichino, Moriyama, JP;
Takashi Kuraoka, Moriyama, JP;
Toru Murakami, Ube, JP;
Takeshige Nakayama, Ube, JP;
Naoki Nishiura, Konan, JP;
Akira Ichino, Moriyama, JP;
Takashi Kuraoka, Moriyama, JP;
Toru Murakami, Ube, JP;
Takeshige Nakayama, Ube, JP;
Gunze Limited, Kyoto, JP;
UBE Industries, Ltd., Yamaguchi, JP;
Abstract
The present invention provides a carbon black-dispersed polyamic acid solution composition having a high solids content and a high carbon black content. The invention further provides an intermediate transfer belt using the polyamic acid solution composition. The carbon black-dispersed polyamic acid solution composition is obtained by uniformly dispersing carbon black in a polyamic acid solution obtained by reacting biphenyltetracarboxylic dianhydride and an aromatic diamine in an organic polar solvent. The biphenyltetracarboxylic dianhydride includes 2,3,3',4′-biphenyltetracarboxylic dianhydride and 3,3′,4,4′-biphenyltetracarboxylic dianhydride. The aromatic diamine includes 4,4′-diaminodiphenyl ether and p-phenylenediamine. The polyamic acid solution has a solids content of 25 weight % or more.