Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Science Applications International Corporation

Richard B Anderson

Yi-Hua Tsao

George Sarkisian

Keshava A Prasad

Mark L Choy

Gary W Byers

Zeying Ma

Raymond J Adamic

Howard Doumaux

Paul Joseph Bruinsma

Hiang P Lauw

Christian Schmid

Kai Kong Iu

Richard A Sader

Ervin Mubarekyan

Donald C Rhoads

Gregory Mooradian

Roger Ward

Ervin Muberekyan

Christopher Coyle

Compositions, systems, and methods for providing smudge resistant and durable ink-jet images having good optical density are provided. Specifically, a system for printing durable ink-jet ink images can comprise a first ink-jet pen containing an ink-jet ink and a second ink-jet pen containing a fixer composition. The ink-jet ink can comprise a first liquid vehicle and a colorant. The fixer composition can comprise a second liquid vehicle, and from 0.5 wt % to 5 wt % of a cationic copolymer of an epihalohydrin and an amine. Upon overprinting or underprinting the fixer composition with respect to the ink-jet ink on a substrate, a durable image can be formed.

Ink-jet printing methods compositions providing improved image durability

An inkjet fixer composition and a printing method and system used with the composition are disclosed herein. The composition includes: a) from 1 to 8 weight percent cationic polymer; and b) from 0 to 2 weight percent of at least one surfactant selected from the group consisting of nonionic surfactant, cationic surfactant and combinations thereof; and c) an aqueous liquid vehicle. Upon overprinting the fixer composition with an ink-jet ink on a substrate, the fixer composition vehicle and the ink-jet ink vehicle form a vehicle mixture on the substrate after which the vehicle mixture penetrates into the substrate, and an ink image is formed on the substrate.

Slow-penetrating inkjet fixer composition and methods and systems for making and using same

In accordance with the present invention an inkjet composition is provided. The inkjet composition includes an anionic dye, at least one pigment, and an acidic fluid fixer, wherein the acidic fluid fixer includes at least one cationic component. Also provided are methods of printing images using an inkjet printer. Also provided are inkjet printers that include the inkjet composition.

Inkjet compositions

An aqueous printing fluid, comprising a cosolvent, the cosolvent or mixture of compounds comprising at least one inner salt compound having a sp-hybridized nitrogen cation and an associated anionic charge either isolated on an N-substituted oxygen anion bound directly to the sp-hybridized nitrogen cation or isolated among the oxygens of a carboxylate group; a method of avoiding paper curl in printed paper by using the above-described aqueous printing fluid; and a printer system for avoiding paper curl in printed paper through using the above-described aqueous printing fluid.

Cosolvents in printing fluids

An inkjet printing system for use in offset printing comprises a fixer fluid and an ink. The fixer fluid comprises a fixer polymer and a first fluorosurfactant package having a fluorosurfactant and a hydrocarbon surfactant. The ink comprises a charged dye and a second fluorosurfactant package. Methods for improving print quality in offset printing using the inkjet printing system and the fixer fluid are also disclosed.

Fluorosurfactant packages for use in inkjet printing and methods of controlling puddling in inkjet pens

An additive for a fixer for inkjet printing. A metal salt is added to the fixer formulation to increase lightfastness of the printed ink.

Addition of metal ions to improve lightfastness of inkjet inks

The present invention is drawn toward inkjet images that are produced using small volume ink drops, and display improved visual properties, such as increased lightfastness and optical density. In one aspect, the ink may include a metalized dye having at least one heterocyclic nitrogen ring and a diazo bond wherein the heterocyclic nitrogen is chelated or complexed to a transition metal, and may be applied to a print media in drop volumes of about 8 pl or less.

Inkjet images having improved visual properties and methods of making same

Apparatus and methods are disclosed for enabling vapor handling in printing. In certain implementations, for example, one or more volatiles emitted during an ink-based printing process may be condensed into one or more liquids. The one or more liquids may be directed into absorbent materials such that the combined liquids and absorbent materials form a substance that qualifies as a solid, as determined by a given solid definition or regulatory standard. In certain (alternative but non-exhaustive) implementations, the volatiles emitted during printing may include water and oil, with the oil vapor being condensed into a liquid and added to the absorbent materials while the water vapor is being forwarded under the force of, e.g., negative air pressure.

Vapor handling in printing

Cyan ink formulation

This present invention is embodied in a printing system for improving the lightfastness of printed documents produced by a color printer. The present invention includes a preprogrammed lightfastness scheme that can be incorporated in any suitable color printer, such as an inkjet printer, for improving lightfastness of printed documents. In general, the present invention can include an inkjet printhead assembly that incorporates a preprogrammed lightfastness scheme directly into the printer driver for selectively improving color documents produced by an inkjet printer. A general lightfastness scheme can be developed for each class of inkjet printhead assemblies during manufacturing of the class of inkjet printhead assemblies.

System and method for improving the lightfastness of color printouts

A spectrometer system includes a processing center, an underwater remote sensor and a communication link coupled therebetween. The sensor is deployed to at least partially penetrate a sediment layer disposed beneath a body of water. The sensor includes a window defining a sediment window plane through which a profile of the sediment layer is observable and a camera, an image plane of which is a conjugate of the window, the camera imaging light from objects in the sediment window plane to generate imagewise data, the imagewise data being transmitted over the communications link to the processing center. The sensor also includes at least one removable cell disposed in the sediment window plane, each removable cell being comprised of a transparent solid material having a void therein, the void in each removable cell for holding a standard material corresponding to the respective removable cell. The sensor further includes a camera filter device having at least one camera filter. Each camera filter is characterized as passing radiant energy within a corresponding emission band of camera wavelengths, the camera filter device being controllable to select a current camera filter. The sensor further includes an illumination source to produce radiant energy and an illumination filter device having at least one illumination filter. Each illumination filter is characterized as passing radiant energy within a corresponding illumination band of wavelengths. The sensor further includes a blocking filter device having at least one blocking filter, each blocking filter being synchronously coordinated with a corresponding illumination filter to block light in the illumination band from reaching the camera.

Growing community of inventors

Escondido, CA, United States of America

Richard B Anderson