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. 17, 1998
Filed:
Apr. 15, 1997
Applicant:
Inventors:
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 316 ; 106 3165 ; 106 3175 ; 106 3176 ; 106 318 ; 106 3185 ; 106 3188 ; 106493 ;
Abstract
Ink cartridges containing ink compositions containing nanometer scale pigment particles are produced by preparing a pigment solution including a solubilized pigment-Lewis acid complex and an aprotic solvent system, separating the pigment from the pigment solution to form pigmented particles either by precipitating pigment nanoparticles or by dyeing colloidal particles with the solubilized pigment-Lewis acid complex, concentrating the pigmented particles, then dispersing the pigmented particles in a formulating solvent to form an ink composition, and finally introducing the ink composition into an ink cartridge. The ink compositions are particularly suitable for use in ink jet ink cartridges.