Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Richard J Mcmanus

Molly L Hladik

Bor-Jiunn Niu

David P Rossing

Tony Pidding

Vladek P Kasperchik

Xiaoqi Zhou

Ralph L Stathem

David J Arcaro

Steven L Webb

Hai Quang Tran

Eric Lee Burch

John L Stoffel, Jr

Yi-Hua Tsao

Silke Courtenay

Kevin D Almen

Gary E Hanson

Sandeep K Bangaru

Loretta Ann Grezzo Page

Xiao-Qi Zhou

Maximo Gayoso

Warren Scott Martin

Shilin Guo

Frank J Bretl

Mark D Zinser

Dan M Weeks

Melissa D Lee

Melanie J Feder

Bill Sperry

Roy Glenn Atkinson

Emmet Whittaker

Jason H Oakes

Paul Killeen

A media sheet has an image-receiving layer that includes about 30 to about 70 percent calcined clay.

Glossy media sheet

A photo-feel coating for application to a surface of paper which is opposite that configured to receive printing, includes a binder; and polyethylene particles having first and second predetermined sizes.

Paper with photo-feel backcoat

An inkjet recording medium includes a substrate, a base layer, and a porous ink receiving layer. The base layer is established on at least one surface of the substrate, and the porous ink receiving layer is established on the base layer. The base layer includes calcined clay present in an amount ranging from about 25% to about 75% by dry weight.

Inkjet recording medium and method of making the same

A method of treating paper to have a photo-feel backcoating includes preparing a mixture of a binder and polyethylene particles wherein the polyethylene particles have first and second sizes, and coating the mixture onto a surface of a sheet of paper which is opposite the surface of the sheet which is configured to receive printing thereon.

The present invention is drawn to compositions and coated substrates wherein a back coating layer can be implemented for use to mitigate ink transfer, surface damage, smudging, and sticking between stacked sheets in output trays of ink-jet ink printers. Specifically, a coated media sheet can comprise a printing surface including an ink-receiving coating formulated to accept an ink-jet ink composition, and an opposing back surface comprising a back coating. The back coating can include an admixture of 0.5 wt % to 75 wt % of a polymeric binder, 5 wt % to 95 wt % of filler particulates having an average particle size from about 0.01 &#x3bc;m to about 15 &#x3bc;m, and 3 wt % to 90 wt % of spacer particulates having an average particle size from about 6 &#x3bc;m to about 500 &#x3bc;m. In one embodiment, the spacer particulates are larger than the filler particulates.

Coated media

A charge control composition for controlling the resistivity of recording media used in electrophotographic printing processes is herein disclosed. The charge control composition is included in one or more layers applied to a substrate of the recording media. The charge control composition is an admixture of an electrolyte, a solvent, an organic carrier, and a co-organic carrier. The organic carrier is selected to form and maintain at least some physical and/or chemical bonds with the solvent such that he organic carrier will retain a fraction of the solvent during a high temperature fusion procedure. The co-organic carrier is selected to have a smaller molecular weight than the organic carrier and will also form at least some physical and or chemical bonds with a solvent.

Recording media for electrophotographic printing

Print media and methods of making print media are disclosed. One exemplary print medium, among others, includes a substrate having a fibrous component. In addition, a cationic guanidine polymer compound or salt thereof and a metallic salt are each disposed within the fibrous component of the substrate.

Print media and methods of making print media

The present invention is drawn to a media sheet for color electrophotographic printing. The media sheet can comprise a base stock having a first side and a second opposing side, base coating layers coated directly on the first side and the second side, and receiving layers coated directly on the base coating layers. The base coating layers can include inorganic pigments, a binder, and a charge control agent. The receiving layers can include inorganic pigments, a binder, and a discharge control agent. In one embodiment, the binder of the receiving layers can be hollow particle pigments.

Printing media for color electrophotographic applications

The present invention is drawn to the thermal transfer overcoating of images printed on porous media, and methods of overcoating images printed on porous media. Upon use of the systems and methods of the present invention, a thermally coated print is generated that can comprise a porous media substrate having printed thereon a digitally produced image. The digitally produced image and the porous media substrate is thermally coated by an adhesive protective layer, wherein the adhesive protective layer has a tangent d that is greater than 1 and melt viscosity less than 1&#xd7;10Pa.&#xb7;sec. as applied above its phase transition temperature. Thus, the voids in the porous media substrate can be substantially filled, and further, substantially no tags remain on the print.

Images printed on porous media and coated with a thermal transfer overcoat

Ink-receiving print media products having multiple capabilities including (A) minimal drying time; (B) improved smear-fastness; (C) a high level of water-fastness; (D) the ability to generate high-definition images; and (E) excellent ink compatibility. The media products have at least one ink-receiving layer on a substrate (e.g. paper pre-coated with one or more binders and/or pigments). The ink-receiving layer includes a pigment (boehmite, pseudo-boehmite, or mixtures thereof) optimally combined with a special binder blend [polyvinyl alcohol, a poly(vinyl acetate-ethylene) copolymer, and a poly(vinyl pyrrolidone-vinyl acetate) copolymer]. Also included is a special dye fixative (namely, a cationic emulsion polymer) which provides enhanced water-fastness. This fixative is of a particular type (a quaternary amine) that also allows high pigment levels to be employed (at least about 65% by weight) which further promotes the foregoing benefits.

Print media products for generating high quality, water-fast images and methods for making the same

A technique for handling residual ink that is from time to time present on the orifice plate of an ink-jet print cartridge. In one preferred embodiment, an ink-jet print cartridge is equipped with an ink-receptive member, such as an absorbent pad. The pad is located so that a service station wiper will move the residual ink from the orifice plate and spread it across the pad. The pad absorbs the ink. In essence, the ink is sequestered on the cartridge, in the pad. The exterior surface of the pad dries quickly so that there is little likelihood of developing a tacky area over the pad to which fibers may stick and degrade print quality.

Sequestering residual ink on an ink-jet print cartridge

Growing community of inventors

San Diego, CA, United States of America

Richard J Mcmanus