Videojet Systems International, Inc.

Videojet Technologies Inc.

Arsenia C Morelos

Josephine Aguilar

Linfang Zhu

Bruce A Lent

Godwin Deng

Mohammed W Siddiqui

Wan Kang Zou

Qiao Qiao Dong

Jose G Vega

Fengfei Xiao

Susan J Brennan

Sharon B Mead

Disclosed are jet ink compositions suitable for printing on substrates such as plastics and oil contaminated metals messages having excellent adhesion, for example, scratch resistance. The jet ink composition comprises one or more organic solvents, a rosin resin, and a colorant, and optionally a co-binder resin, e.g., a vinyl resin. Preferably, the jet ink composition is free or substantially free of a cellulose nitrate resin and/or a slow evaporating solvent. The present invention further provides a method for printing scratch resistant messages on a low surface energy substrate comprising projecting a stream of droplets of the jet ink composition to the substrate, controlling the direction of the stream so that the droplets are caused to form the desired printed messages, and allowing the messages to dry.

Jet ink composition for low surface energy substrates

The present invention provides jet ink compositions that are free or substantially free of sedimentation, have good image adhesion and rub resistance, and that are suitable for printing messages on food items such as fruits, vegetables, chocolate, candies, confectioneries and pharmaceuticals such as tablets, and other edible or ingestible materials. The jet ink compositions comprise a surface modified or coated colorant. The surface modified or coated food grade colorant comprises a food grade colorant of particle size in the range of from about 0.01 micron to about 25 microns, a colorant carrier, and a surface modifying or coating agent. The surface modifying or coating agent comprises at least one binder resin, and preferably two or more binder resins.

Food grade jet inks

The present invention provides an ink composition for use in printing on food items, especially fruits and vegetables, and a method of forming printed images on food items by use of such compositions. The compositions of the present invention comprise citrus #2 dye, at least one binder, such as a rosin resin or cellulose derivative, and a carrier comprising ethanol and acetone. The composition is also characterized as being MEK-free, as well as water-free.

Citrus marking jet ink

The present invention provides jet ink compositions that produce on glass, metal, plastic, and rubber surfaces messages having high visual intensity, and condensation and water resistance. The inventive compositions comprise a polyamine, a colorant, and an acidic resin. The present invention further provides jet ink compositions further comprising water as the ink carrier. The colorant used in the ink composition of the present invention includes a dye, a pigment, or a polymeric hollow microsphere. The polyamine used in the ink composition of the present invention includes a dendrimer. The ink composition of the present invention may additionally include pH adjusting agents, humectants, biocides, defoamers. The present invention further provides an improved process of jet printing on glass, metal, plastic, and rubber surfaces messages having improved condensation and water resistance, and improved visual intensity, the improvement comprising using the ink composition of the present invention.

Condensation and water resistant jet ink

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Glendale Heights, IL, United States of America

Arsenia C Morelos