Method for etching round templates

Details Method for etching round templates Method for etching round templates

1993-09-22

1995-01-03

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427271, 4273881, B05D 300

Patent

active

053785096

ABSTRACT:
By means of a laser beam, a lacquer layer lying on the surface of a hollow, cylindrical, rotating metal screen is eroded in predetermined pattern regions. The erosion of the lacquer layer within the pattern region takes place with the laser beam continuously energized. The laser beam is deenergized at the end of each respective pattern region within a time interval of 12 .mu.s to 30 .mu.s. Radiation reflected back at the metal screen into the laser beam path is coupled out from the laser beam path, in order not to delay the deenergization of the laser beam. As a result, patterns with particularly sharp edge structures may be generated.

REFERENCES:
patent: 4998260 (1991-03-01), Taniura

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