Photocopying – Contact printing – Methods
Patent
1982-01-15
1982-11-23
Wintercorn, Richard A.
Photocopying
Contact printing
Methods
355100, G03B 2702
Patent
active
043602673
ABSTRACT:
A method and apparatus for producing printing patterns through the use of a liquid photosensitive resin system. A partially cured resin backing member is applied to a vertical supporting surface and a glass cover plate having a photographic negative mounted on the glass surface is positioned in spaced relation to the backing member. A liquid uncured photosensitive resin is introduced into the space between the backing member and the photographic negative, and an ultra-violet lighting unit is then positioned adjacent the glass cover plate to expose portions of the resin to the light through the photographic negative, causing the exposed portions of the resin to cure or crosslink. The lighting unit is oscillated to provide tapered edges on the exposed crosslinked areas of the resin. Following the crosslinking, the pattern can be removed and the uncured portions of the resin can be washed from the pattern.
REFERENCES:
patent: 4070110 (1978-01-01), Ott
patent: 4087182 (1978-05-01), Aiba et al.
patent: 4311381 (1982-01-01), Nettesheim et al.
Guyer Robert R.
Nettesheim Daniel R.
Schwaab Inc.
Wintercorn Richard A.
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