FINE PARTICLE DISPERSION, COATING SOLUTION FOR ACCEPTING...

Stock material or miscellaneous articles – Ink jet stock for printing – Hardened – cured – or cross-linked ink receptive layer

Reexamination Certificate

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Details

C428S032300, C428S032310, C428S032350

Reexamination Certificate

active

06919109

ABSTRACT:
The present invention provides an ink-jet recording sheet having a coloring agent accepting layer which contains a dispersion containing a cationic polymer with an average molecular weight of 60,000 or lower and having a sulfate ion concentration of 1.5% by mass or lower to the cationic polymer together with a water-soluble resin; an particle dispersion obtained by further granulating a pre-dispersion obtained by pre-dispersing a solution containing at least fine particles and a cationic polymer and the pre-dispersion and/or the particle dispersion is heated at room temperature for 5 hours or longer after pre-dispersion and/or after granulating; and a coating solution for coloring agent accepting layer obtained by adding a water-soluble resin to the particle dispersion.

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patent: 6495242 (2002-12-01), Tsuchiya et al.
patent: 6685769 (2004-02-01), Karl et al.
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Japanese Abstract No. 2000247021 dated Sep. 12, 2000.

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