Method and apparatus for creating a photomask for projecting an

Details Method and apparatus for creating a photomask for projecting an Method and apparatus for creating a photomask for projecting an

1988-04-15

1989-03-21

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346157, G01D 1500

Patent

active

048147990

ABSTRACT:
A method and apparatus for creating a photomask corresponding to an image utilizes a planar disc having at least a portion of its surface formed from a photosensitive material. The disc is mounted for rotation. A laser beam source is supported at a spaced relationship with respect to the disc. One or more laser beams from the source are focused onto the disc. The laser source is moved radially with respect to the disc, whereby the laser beams scan the surface of the disc. The beams are modulated in accordance with information corresponding to the image to cause the image to be written onto the photosensitive material on the rotating disc by the laser beam.

REFERENCES:
patent: 4761046 (1988-08-01), Funato
patent: 4768046 (1988-08-01), Minor et al.

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