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Thermochromic Printing Method for Plain Paper Disclosure Number: IPCOM000055085D
Original Publication Date: 1980-May-01
Included in the Prior Art Database: 2005-Feb-13

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There is presently interest in new printing methods, which utilize simple non-toxic printing media which can be applied rapidly, and without the use of treated paper, which have the following disadvantages: (1) the thermochromic dyes used are of unknown toxicity, (2) the paper has to be specially produced, and (3) the general appearance of the treated paper is inferior to ordinary bond.