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INK JET PRINTING METHOD FOR HIGH WATERFASTNESS AND LIGHT-FASTNESS ON PRINTED IMAGES

IP.com Disclosure Number: IPCOM000025720D
Original Publication Date: 1987-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 46K

Publishing Venue

Xerox Disclosure Journal

Abstract

Compositions for ink jet printing processes wherein the waterfastness and lightfastness components are separated by formulating, in addition to the ink, an aqueous transparent fluid. The aforementioned inks, which can be utilized to generate images on paper or transparencies, contain for example dyes, biocides, chelating materials, a buffer solution, water, and optional additives such as humectants and dye solubilizers. Subsequent to development there is applied to the printed paper or transparency an aqueous transparent fluid containing polyethyleneimine, an ultraviolet light absorber such as benzotriazoles, and an antioxidant such as an alkylhydroquinone. Use of the two separate com onents as illustrated enable improved lightfastness, and a reduction in the c P ogging of the ink jet orifices.

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XEROX DISCLOSURE JOURNAL

INK JET PRINTING METHOD FOR FASTNESS ON PRINTED IMAGES Henry R. Kang

Proposed Classification

                            Int. C1. C09d 11/00 HIGH WATERFASTNESS AND LIGHT- U.S. C1.106/22

Compositions for ink jet printing processes wherein the waterfastness and lightfastness components are separated by formulating, in addition to the ink, an aqueous transparent fluid. The aforementioned inks, which can be utilized to generate images on paper or transparencies, contain for example dyes, biocides, chelating materials, a buffer solution, water, and optional additives such as humectants and dye solubilizers. Subsequent to development there is applied to the printed paper or transparency an aqueous transparent fluid containing polyethyleneimine, an ultraviolet light absorber such as benzotriazoles, and an antioxidant such as an alkylhydroquinone. Use of the two separate com onents as illustrated enable improved lightfastness, and a reduction in the c

P ogging of the ink jet orifices.

Volume 12 Number 4 July/August 1987 169

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170

  XEROX DISCLOSURE JOURNAL Volume 12 Number 4 July/August 1987

[This page contains 1 picture or other non-text object]