Technique of forming a separate information bearing printed patt

Details Technique of forming a separate information bearing printed patt Technique of forming a separate information bearing printed patt

1989-08-29

1992-01-28

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

264 13, 283 86, 359900, 359558, G03H 100

Patent

active

050838504

ABSTRACT:
A method and system for replicating microstructure surface relief patterns, such as diffraction patterns including holograms, by casting. A liquid casting resin is held between a surface relief master of the microstructure to be replicated and a substrate while the resin is hardened by actinic radiation curing. Application of resin to edges and discontinuities of the master is avoided in order to reduce undesirable build-up of resin on these areas of the master. The hardened resin surface relief replica may optionally be coated with a discontinuous graphical pattern of a clear or colored paint that eliminates the effect of the surface relief pattern in the regions so coated.

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