3906results about How to "Improve printing quality" patented technology

A set of printing liquids is disclosed comprising a first anionic printing liquid comprising an aqueous vehicle, at least one first colorant, and at least one first anionic polymer; a second anionic printing liquid comprising an aqueous vehicle at least one second colorant, at least one second anionic polymer, and an acid additive having a pKa up to the pKa of the at least first polymer of the first liquid; a third cationic printing liquid comprising an aqueous vehicle, at least one third colorant, at least one third cationic polymer, and a pH in the range from about 2 to about 5; and a fourth anionic printing liquid comprising an aqueous vehicle, at least one fourth anionic dye, and a precipitating agent. More specifically, the present set of printing liquids may find application in ink-jet printing. The set of ink-jet inks provides improved print quality, specifically, reduced bleed; improved edge-acuity, uniform area fills, and color quality; while maximizing lightfastness without sacrificing printing reliability.

An identification document includes a lens system and a specially prepared photo of a document bearer. The lens system and the specially prepared photo cooperate to create a three dimensional photo effect. The document includes two or more document layers. There is a lens structure in one of the document layers, and it includes lens elements. A photo is printed on one or more of the document layers. The photo depicts the document bearer, and includes two or more separate images of the bearer from different perspectives. Parts of the separate images are interleaved together into sets, and the sets are positioned relative to corresponding lens elements of the lens structure. These sets include parts of the separate images such that when viewed through the lens structure, the parts are viewed simultaneously making the subject appear three-dimensional to a viewer.

A process comprising aggregating a colorant encapsulated polymer particle containing a colorant with colorant particles and wherein said colorant encapsulated latex is generated by a miniemulsion polymerization.

The invention discloses water-based UV (ultraviolet) ink, consisting of the following components according to a certain weight percentage: water-based light-cured resin, an activated monomer, a photoinitiator, pigments, assistants and a diluent. The assistants consist of a photosensitizer, a polymerization inhibitor, a leveling agent, a defoaming agent, a wetting and dispersing agent, an anti-rubagent, a thixotropic agent and a light stabilizer; and the pigments consist of direct dye, reactive dye and paint. The invention also discloses a preparation method of the water-based UV ink, which comprises the following steps of: weighing the components and sequentially adding the photoinitiator and the water-based light-cured resin into the activated monomer; dissolving the direct dye or the reactive dye in the diluent and then adding the dissolved substances, adding the assistants, evenly stirring the mixture and collecting the materials to obtain the water-based UV ink; or taking a certain amount of the wetting and dispersing agent, dispersing the pigments in the wetting and dispersing agent and then adding the dissolved substances, and evenly stirring the mixture; and adding the rest assistants and the diluent, stirring and then heating the mixture, and collecting the materials to obtain the water-based UV ink. According to the invention, the problem of incapability of the water-based UV ink to multiple kinds of printing modes in the prior art is solved. The preparation method is simple and easy to implement.

To provide an ink for inkjet recording containing water, water-soluble organic solvent, water-dispersible resin, fluorochemical surfactant or derivative thereof, and coloring agent containing pigment, wherein the ink has a surface tension of 20-35 mN / m and viscosity of 5 mPa·s or more at 25° C., total amount of the water-dispersible resin and the coloring agent in the ink is 5-40% by mass, and mass ratio A / B of the water-dispersible resin A to the coloring agent B is 0.5-4, wherein the ink is applied for a recording medium for inkjet recording containing a support containing cellulose pulp, and one or more barrier layers disposed on at least one face of the support, and wherein the barrier layer contains 30% by mass or more of inorganic pigment having refractive index of 1.5 or more, excluding aluminum hydrate, and 10% by mass or less of inorganic pigment having a refractive index of less than 1.5.