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AssigneeVideojet Systems International, Inc.
InventorsWan Kang Zou, Mohammed W. Siddiqui, Fengfei Xiao, Arsenia C. Morelos, Jose G. Vega, Qiao Qiao Dong, Josephine Aguilar
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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.
A surface modified or coated food grade colorant comprising a food grade colorant of particle size of from about 0.01 micron to about 5 microns, a colorant carrier, and a surface modifying or coating agent, wherein said surface modified or coated food grade colorant is suitable for preparing a jet ink composition which is substantially sedimentation free.
A surface modified or coated food grade colorant comprising a food grade titanium dioxide of particle size of from about 0.01 micron to about 5 microns, a colorant carrier, and a surface modifying or coating agent comprising a cellulosic resin.
Dependencies are inferred from the claim text.