Browse Prior Art Database

IMPROVED WATERFAST THERMAL INK JET INK FORMATIONS

IP.com Disclosure Number: IPCOM000027106D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 55K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed are thermal ink jet (TIJ) ink formulations which exhibit improved waterfastness properties and are suitable for use in high speed, low volume thermal ink jet printers. Formulations comprised of, for example, in weight percent, 73.68% dye stuff (e.g. ICI Pro Jet Black DB-1681, 10% sulfolane solvent (medical grade), 10% 2-pyrrolidone solvent, 1% triethanolamine, 0.05% polyethyleneoxide, 0.6% concentrated HC1, balance with deionized water, yielded waterfastness values from about 80 to 99 percent on a variety of standard bond papers, such as Courtland 4024 (84%) and Hammermill 3V (98%). Solid area density values measured were in the acceptable range of about 1.21 to about 1.34. The ink formulations easily satisfied kogation requirements.

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XEROX DISCLOSURE JOURNAL

IMPROVED WATERFAST THERMAL INK JET INK FORMATIONS
Miguel A. Fontanez Richard L. Colt
Louis V. Isganitis

Proposed Classification
U.S. C1.355/256 Int. C1. G03g 15/10

Disclosed are thermal ink jet (TIJ) ink formulations which exhibit improved waterfastness properties and are suitable for use in high speed, low volume thermal ink jet printers. Formulations comprised of, for example, in weight percent, 73.68% dye stuff (e.g. ICI Pro Jet Black DB-1681, 10% sulfolane solvent (medical grade), 10% 2-pyrrolidone solvent, 1% triethanolamine,
0.05% polyethyleneoxide, 0.6% concentrated HC1, balance with deionized water, yielded waterfastness values from about 80 to 99 percent on a variety of standard bond papers, such as Courtland 4024 (84%) and Hammermill 3V (98%). Solid area density values measured were in the acceptable range of about 1.21 to about 1.34. The ink formulations easily satisfied kogation requirements.

REFERENCES

Related ink formulations are disclosed in U.S. Patent Nos. 4,197,135 and 4,155,768. Ink formulations with improved latency are disclosed in Xerox Disclosure Journal, Vol. 18, No. 4, July/August, 1993, p 415; and Vol. 17, No. 6, NovemberlDecember 1992, p 459.

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 March/April 1995 173

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174 XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 March/April 1995

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