Picture engraving method and engraved picture bearing certificat

Details Picture engraving method and engraved picture bearing certificat Picture engraving method and engraved picture bearing certificat

1996-10-31

1999-05-18

Burr, Edgar

Printing

Embossing or penetrating

Processes

101 31, 358297, B31F1/07

Patent

active

059040912

ABSTRACT:
An engraved picture bearing certificate comprising a specular-surfaced engraving sheet on which an original picture for identification, such as the photograph of face, a fingerprint, a signature, a logo or the like, is engraved by a graving tool of an engraving device. The specularly reflected light from the surface of the engraving sheet is visibly recognized as the engraved picture.

REFERENCES:
patent: 4021605 (1977-05-01), Tauszig
patent: 5284364 (1994-02-01), Jain

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