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US 2008/0187691 A1Published application
Rapid Ink Drying Papers
AssigneeS.D. Warren Company
InventorsAlonzo K. Osgood, Steven L. Masia, Daniel R. Coughlin, Phillip S. Coleman
Life of this patent
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Abstract
Papers are provided which exhibit rapid ink setting and ink drying. These papers include a topcoat layer, and a penultimate coating layer that draws ink through the topcoat layer. In some implementations, the penultimate coating layer includes a high internal pore volume filler, and/or has a fine external pigment pore structure.
Claims22
A paper comprising:
- a basesheet;
- a penultimate coating layer;
- and
- a porous topcoat disposed directly adjacent the penultimate coating layer and having a surface exposed to receive a printed image;
- wherein the penultimate coating layer is configured to draw ink vehicle through the topcoat.
2 more elements
A paper comprising:
- a basesheet;
- a penultimate coating layer comprising (a) a filler having a high internal pore volume;
- and (b) a pigment or pigment blend having an overall particle size distribution such that about 25% of the particles are finer than 0.2 μm, about 50% of the particles are finer than 0.5 μm, and about 70% of the particles are finer than 2 μm;
- and
- a porous topcoat, disposed directly adjacent the penultimate coating layer and having a surface exposed to receive a printed image.
2 more elements
Dependencies are inferred from the claim text.