Method for making a high solids interactive coating composition and ink jet recording medium
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United States of America Patent
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Mar 30, 2004
Grant Date -
May 9, 2002
app pub date -
Aug 27, 2001
filing date -
Jun 28, 1996
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Abstract
A coating composition for an ink jet recording medium comprises an aqueous suspension of binder, a cationic fixing agent, an absorptive pigment, and a sizing agent. The coating composition combines solids content of greater than 30% with good runnability. The composition may preferably be dispersed at pH values in the range of 4.5 to 7.0. The pigment is preferably a mixture of 50% or more silica gel having a pore volume of 0.5-2.0 cc/g, and 10% or more alumina or alumina hydrate. A method for making down a composition has sequential steps of dispersing a binder in water, adding a cationic fixing agent, dispersing an alumina and an absorptive silica, adding a fluorescent whitening agent, cooling the composition, and finally adding a sizing agent.
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