Paper and coating medium for multifunctional printing
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United States of America Patent
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Sep 28, 2010
Grant Date -
May 21, 2009
app pub date -
Mar 27, 2007
filing date -
Mar 24, 2006
priority date (Note) -
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Abstract
A paper coating includes a combination of a primary pigment and a secondary pigment. The primary pigment includes anionic particles having a particle size distribution where at least 96% of the particles by weight have a particle size less than 2 microns. The secondary pigment is a cationic, grit-free pigment having an average particle size of 3 microns or less. The coating also includes up to 17 weight % of a hydrophilic styrene-butadiene latex based on the weight of the dry pigments and a co-binder. Another embodiment of this invention is a coated base sheet that includes a base sheet to which the above coating has been applied.
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