Colored character printed on key button

Details Colored character printed on key button Colored character printed on key button

1983-09-19

1985-05-14

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Acrylonitrile polymer substrate

8513, 8514, 8562, 8607, 8654, 8657, H01H 1314

Patent

active

045169780

ABSTRACT:
A key button molded of a synthetic resin and having on the top surface thereof a character or symbol printed with a coloring agent comprising a dye and a solvent which is capable of dissolving the dye and the synthetic resin, wherein the character or symbol is durably formed on the top surface by the action of the solvent on the surface and body to cause the dye to permeate the surface and the body.

REFERENCES:
patent: 4451264 (1984-05-01), Ulry et al.
H-K. Dien in Venkataraman's "The Chemistry of Synthetic Dyes," vol. VIII, (Academic Press, 1978), (pp. 82-83, 100 and 128-129).

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