Application of the laser jet method for inscribing office machin

Details Application of the laser jet method for inscribing office machin Application of the laser jet method for inscribing office machin

1986-01-21

1987-12-01

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

219121L, 219121LM, 219121LB, 264 402, 264 407, 264132, 4251744, 4251748R, B29C 7104, B29C 3508

Patent

active

047103302

ABSTRACT:
A process for inscription of parts from plastic material whose color can be changed through the effect of an energy radiation used for providing alphanumeric characters or other symbols on the key buttons of a keyboard. The office machine keyboard completely equipped with blank key buttons is for that purpose moved relative to the energy radiation, for instance a laser beam, with the coordinated character or symbol being inscribed on each key button by the energy radiation in accordance with stored data as the key button proceeds into the effective area of the energy radiation.

REFERENCES:
patent: 3549733 (1970-12-01), Caddell
patent: 4307047 (1981-12-01), Edinger et al.
patent: 4391764 (1983-07-01), Edinger et al.

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