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. 09, 1997
Filed:
Sep. 27, 1996
William M Schwarz, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Disclosed is an ink jet printing process which comprises (1) incorporating into an ink jet printer an aqueous ink composition which comprises water, a humectant, and a colorant of the formula ##STR1## wherein X and X' each, independently of one another, are hydrogen, alkyl, halogen, ester, or amide, wherein Z and Z' each, independently of one another, are either (A): ##STR2## wherein R is hydrogen, hydroxy, alkoxy, aryloxy, ester, amine, amide, ether, thioether, or --(O(CH.sub.2).sub.y).sub.z OH wherein y is an integer of from 1 to 3 and z is an integer of from 1 to about 50, wherein A, B, C, D, E, and F each, independently of one another, are hydrogen, --COOH, --SO.sub.3 M, wherein M is a cation, or --NR'R'', wherein R' and R'' each, independently of one another, are hydrogen, alkyl, or aryl, wherein at least one of A, A', B, and B' is not hydrogen, or (B): ##STR3## wherein S is hydrogen or --(O(CH.sub.2).sub.y).sub.z OH, wherein y is an integer of from 1 to 3 and z is an integer of from 1 to about 50, wherein at least one S is not hydrogen; and wherein J, K, L, N, P, and Q each, independently of one another, are hydrogen, --COOH, --SO.sub.3 M, wherein M is a cation, or --NR'R'', wherein R' and R'' each, independently of one another, are hydrogen, alkyl, or aryl.