Low energy heat activated transfer printing process
DCFirst Claim
1. A liquid ink for use in ink jet printers prepared from heat activated dye solids, comprising:
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space="preserve" listing-type="tabular">______________________________________ Material Weight % ______________________________________ heat sensitive dye solid 0.05-20% dispersant/emulsifying agent 0.05-30% solvent 0-45% water 40-98% Total 100% ______________________________________ wherein the heat sensitive dye solid is not substantially insoluble in the water.
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Abstract
A method of printing a liquid ink which is produced from a heat activated dye which is selected from a limited group of dyes which are capable of transfer at low energy. A printer which uses liquid ink, such as an ink jet printer, prints an image onto an intermediate substrate medium. The dyes contained in the ink are not substantially activated during the process of printing on to the medium. The image formed by the printed ink is transferred from the medium to a final substrate by the application of heat and pressure for a short period of time to activate the ink. The dye and dispersing/emulsifying agent(s) are selected from a limited group to produce an ink which permits thermal transfer at low energy, with the resulting image, as deposited on the final substrate, having an optical density of 1.0 or greater.
72 Citations
12 Claims
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1. A liquid ink for use in ink jet printers prepared from heat activated dye solids, comprising:
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space="preserve" listing-type="tabular">______________________________________ Material Weight % ______________________________________ heat sensitive dye solid 0.05-20% dispersant/emulsifying agent 0.05-30% solvent 0-45% water 40-98% Total 100% ______________________________________wherein the heat sensitive dye solid is not substantially insoluble in the water. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification