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. 12, 1999
Filed:
Feb. 03, 1997
Applicant:
Inventors:
Shoji Saibara, Toride, JP;
Shigeo Aoyama, Ibaraki-ken, JP;
Yuichi Sakurai, Toride, JP;
Kouji Takazawa, Abiko, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 3175 ; 106 3186 ; 106 3189 ; 106 319 ;
Abstract
Disclosed is a black pigment ink suitable for ink jet recording which comprises carbon black, a dispersant containing polyethylene oxide and 0.1-5 mmols/g of amino group, and a solvent such as water. The ink is excellent in storage stability, causes no clogging of head and provides printed images of excellent quality and high light resistance.