Yellow dyes and ink compositions
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United States of America Patent
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Mar 15, 2005
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app pub date -
Mar 11, 2004
filing date -
Oct 7, 2002
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Abstract
Provided are novel yellow azo dyes which are useful in ink compositions, especially ink jet compositions. The dyes and ink compositions of the present invention exhibit a good balance of optical density, print reliability, water fastness and light fashion and exhibit improved water solubility, thus rendering the ink compositions to be especially suitable for printheads having small nozzle openings.
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