Method of printing characters on resin key tops

Details Method of printing characters on resin key tops Method of printing characters on resin key tops

1987-02-13

1988-10-11

Coughenour, Clyde I.

Printing

Special article machines

101129, 101416A, 106 32, B41L 2320

Patent

active

047762705

ABSTRACT:
A method of printing characters on key tops made of a resin comprises the steps of printing character patterns on the key tops using an ink obtained by adding a coloring agent to a multifunctional acrylic ultraviolet-ray-curable paint and subsequently hardening the printed ink character patterns by irradiating the printed surface of each key top with ultraviolet rays.

REFERENCES:
patent: Re23753 (1951-12-01), Bjorksten
patent: 2160725 (1939-05-01), Flint
patent: 2406878 (1946-09-01), Whyzmuzis
patent: 2860069 (1958-11-01), Petrecca
patent: 3055117 (1962-09-01), Bernstein
patent: 3091546 (1963-05-01), Schmall
patent: 3510340 (1970-05-01), Blake
patent: 3894237 (1975-07-01), Choate
patent: 3934500 (1976-01-01), Jackson
patent: 3986823 (1976-10-01), Mayer
patent: 4072099 (1978-02-01), Martin
patent: 4186115 (1980-01-01), Spatz

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