Method of enhancing the visibility of diffraction pattern surfac

Details Method of enhancing the visibility of diffraction pattern surfac Method of enhancing the visibility of diffraction pattern surfac

1995-06-07

1997-05-13

Loney, Donald

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428 421, 428161, 428167, 428168, 428172, 428206, 428208, 428328, 428402, 428913, 4285422, 359 15, 359572, 359576, B32B 300, G02B 518, A47G 3500

Patent

active

056290683

ABSTRACT:
Methods for enhancing the visibility of and imparting a metallic luster to holographic and diffraction pattern surface embossments on transparent media such as plastic films (12) are disclosed. Enhancement is achieved by (1), metallic effect dyes or (2), metal flake inks containing minimal quantities of resinous binders (3), inks containing crystalline pigments that have metallic visual effects, or (4), inks containing pigments formed of optical stacks. The solvent used during application of the dye or ink must not be a solvent for the embossed surface.

REFERENCES:
patent: 3689346 (1972-09-01), Rowland
patent: 4127693 (1978-11-01), Lemelson
patent: 5468540 (1995-11-01), Lu

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