Pressure sensitive reproducing material

Details Pressure sensitive reproducing material Pressure sensitive reproducing material

B - Operations, Transporting

41

M

42/12

B41M 5/145 (2006.01) B41M 5/132 (2006.01) B41M 5/20 (2006.01)

Patent

CA 1269531

ABSTRACT The object of the present invention is to provide a pressure sensitive reproducing material which allows reproduced letters or patterns to fade away automatically with the passage of time. The present invention accomplished the object by a pressure sensitive reproducing material composed of a colored material support d on a substrate, in which the colored material comprises a phthalein group indicator which is color-developed by an inorganic weakly basic substance jointly used with an organic amine and contains hygroscopic material or drying inhibitor.

548937

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