Hewlett-packard Development Company, L.P.

Other

Ilford Imaging Switzerland Gmbh

Ilford Imaging UK Limited

Meinrad Schaer

Bor-Jiunn Niu

Stefan Schuttel

Jeffrey Ronald King

Simon Richard John Leggett

Stefan Schüttel

Karen Taylor

Stefan Sch&uuml;ttel

Stefan Schutel

The present invention is drawn to compositions and coated substrates wherein a hydrophobic backside coating layer can be implemented for use that mitigates ink transfer, surface damage, smudging, and sticking between stacked sheets in output trays of ink-jet ink printers. The backside coating can comprise hydrophobic beads suspended in a polymeric blend having a hydrophilic polymeric binder component and a hydrophobic polymeric binder component. Alternatively, the coating can comprise a hydrophobic binder blended with a natural wax. Either coating can be applied directly to the backside of a media substrate or on top of an existing hydrophilic layer that is typically applied for curl and sheet feed performance.

Coated media for improved output tray stacking performance

Ink-receiving print media products capable of producing high quality printed images which are light-fast, humid-fast, have low coalescence (graininess) levels, and are characterized by other beneficial attributes. The print media products have at least one ink-receiving layer supported by a substrate. The ink-receiving layer includes a binder blend designed to achieve the aforementioned goals, namely, gelatin, a poly(vinyl alcohol-polyethylene oxide) copolymer, and a poly((styrene)-(n-butyl acrylate)-(methyl methacrylate)-(2-(tert-butylamino) ethyl methacrylate)) copolymer. One or more optional pigments and/or additional binders can also be included within the ink-receiving layer. The ink-receiving layer may optionally be employed in combination with one or more additional material layers thereover or thereunder which can contain, for example, one or more pigments and/or binders.

Print media products for generating high quality images and methods for making the same

A recording material which comprises a polymeric substrate having two surfaces, wherein one surface is coated with a sealing layer comprising a particulate polymer having a film forming temperature of between 60&#xb0; C. and 160&#xb0; C. and an average particle size between 1 &#x3bc;m and 50 &#x3bc;m together with at least one binder, and at least one ink receiving layer; and the opposite surface is coated with an adhesive layer covered by a release liner. A related printing method whereby an image printed on the recording material is heated after printing to seal the sealing layer to provide a protected surface.

Recording material and method

A recording medium comprising a substrate coated with at least one ink receiving layer and at least one protective layer which comprises polymeric particles having film forming temperatures between 60 to 140&deg; C., preferably between 100 to 120&deg; C., and at least one binder. In the related printing method, the printed medium is heated to form a stable image protecting coating.

Ink jet printing method

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Ependes, Switzerland

Meinrad Schaer