Browse Prior Art Database

RED/BLUE COLORANTS FOR THERMAL INK JET

IP.com Disclosure Number: IPCOM000027351D
Original Publication Date: 1996-Jun-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 54K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is the use of certain dye colorant materials for use in Thermal Ink Jet (TIJ) printing, to achieve vivid secondary colors on plain paper, specifically xanthene compounds for reds and anthroquinone compounds for blues.

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XEROX DISCLOSURE JOURNAL

RED/BLUE COLORANTS FOR THERMAL Proposed Classification INKJET U. S. C1.346/001 .I William M. Schwan Int. C1. B41j 02/05

Disclosed is the use of certain dye colorant materials for use in Thermal Ink Jet (TIJ) printing, to achieve vivid secondary colors on plain paper, specifically xanthene compounds for reds and anthroquinone compounds for blues.

There is considerable interest in new dye materials for TIJ. Examples of new dyes are disclosed in US. Patent Nos. 5,279,656 and 5,273,573. The primary emphasis has been cyan, magenta, and yellow, however, other colors particularly the secondaries, red, green,
and blue are often mentioned as well.

Several colorants, Eosin U (AR 87) Red and Erionyl Blue RLErionyl Violet B (AB260/AV109) blue, works well in a TIJ context. These dye materials also follow a trend toward bright, vibrant colors on plain paper regardless of lightfktness. Both the xanthene and anthroquinone classes of dyes are well known for their bright, vivid colors. In the case of the erionyl dyes, the lightfhstness is also exceptional.

An exemplary chemical structural formula (Eosin AR87) follows:

Br Br

XJ3ROX DISCLOSURE JOURNAL. - Vol. 21, No. 3 May/June 1996 195

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196 XEROX DISCLOSURE JOURNAL - Vol. 21, No. 3 May/June 1996

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