Browse Prior Art Database

WATERFAST PENETRATING THERMAL INK JET INKS

IP.com Disclosure Number: IPCOM000027353D
Original Publication Date: 1996-Jun-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 79K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed are waterfast penetrating Thermal Ink Jet (TI0 inks for use in Thermal Ink Jet printing applications. The combination of a waterfast package (N-BAPED, NH40H, H3P03, reactive and direct dyes) and facile paper penetrating glycol monomethyl ethers provides a superior full color ink jet. Prints on "plain" office papers demonstrate vibrant color, minimal intercolor bleed, well controlled toward image cool curl and an extremely high degree of waterfastness. Excellent recoverability with minimal misting was demonstrated in Hewlett Packard 500C hardware. Additionally, solubilizer aids such as, sulfolane and betaine, are useful in achieving optimal success of the color set. A particularly preferred betaine is (CH,), N + -CH2-CH2-C02 - .

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XEROX DISCLOSURE JOURNAL

WATERFAST PENETRATING THERMAL Proposed Classification INKJETINKS U. S. C1.346/140

Richard Colt Kurt B. Gundlach ht. C1. GO1 d 15/16

Disclosed are waterfast penetrating Thermal Ink Jet (TI0 inks for use in Thermal Ink Jet printing applications. The combination of a waterfast package (N-BAPED, NH40H, H3P03, reactive and direct dyes) and facile paper penetrating glycol monomethyl ethers provides a superior full color ink jet. Prints on "plain" office papers demonstrate vibrant color, minimal intercolor bleed, well controlled toward image cool curl and an extremely high degree of waterfastness. Excellent recoverability with minimal misting was demonstrated in Hewlett Packard 500C hardware. Additionally, solubilizer aids such as,
sulfolane and betaine, are useful in achieving optimal success of the color set. A particularly preferred betaine is (CH,), N + -CH2-CH2-C02 - .

Stable formulations were obtained through the reactive red 180 and reactive yellow 37 dye reactions with N,N-bis(3 -aminopropyl)ethylenediamine (N-BAPED) in the presence of sulfolane and tripropyleneglycol monomethylether. Superior recoverability was obtained when betaine in combination with tripropyleneglycol monomethyl ether was utilized with the cyan dye, direct blue 199, and the N-BAPED waterfist package. It had been previously noted that glycols in general destabilized the dye/N-BAPED waterfist package, though the monomethyl ether of tripropyleneglycol was found to be co...