Methods for providing generic and specific artwork on plastic in

Details Methods for providing generic and specific artwork on plastic in Methods for providing generic and specific artwork on plastic in

1997-03-13

1998-06-16

Powell, William

Etching a substrate: processes

Pattern or design applied by transfer

216 22, 216 41, B44C 122

Patent

active

057664951

ABSTRACT:
Generic and specific artwork is imparted to plastic discs such as CDs, CD ROMs, and DVDs (digital video discs) by exposing a layer of photoresist material on a forming member, which already contains generic artwork, to light from an original image of specific artwork. The material of the photoresist layer is exposed to different depths by different intensity light from different specific image regions. Where the image is dark, the exposure is to relatively shallow, random depths. Where the image is light, the full thickness of the photoresist layer is exposed. Development of the photoresist layer removes the exposed photoresist material. The surface features of the developed photoresist layer and any uncovered forming member surface are transferred to a second forming member used in forming a surface of the plastic disc, thereby visibly embossing both generic and specific artwork in the disc.

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F. Vizard, "Video's New Look," Popular Mechanics, May 1995, p. 32.

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