INK COMPOSITION
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United States of America Patent
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N/A
Issued Date -
Sep 22, 2011
app pub date -
Sep 4, 2009
filing date -
Sep 5, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention relates to a pigment ink composition that can fulfill excellent print stability, and performances and drying performance of printed matters.The ink composition comprises: at least a pigment; an organic solvent; and two or more kinds of binder resins having different weight average molecular weights (Mw), wherein, when a binder resin having lowest weight average molecular weight (Mw) is marked as α, and a binder resin having higher weight average molecular weight (Mw) than that of the binder resin α and meeting formula (3) is marked as β among the two or more kinds of binder resins to be used, the ink composition meets formulae (1) and (2): Formula (1): Mwβ−Mwα≧10,000, Formula (2): 1,000
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