Optical: systems and elements – Holographic system or element – Copying by holographic means
Patent
1996-11-12
1998-08-25
Dzierzynski, Paul M.
Optical: systems and elements
Holographic system or element
Copying by holographic means
359 1, 359 2, 430 1, 430 2, G03H 120, G03H 100, G03H 104
Patent
active
057988501
ABSTRACT:
A hologram duplicating method and apparatus whereby a photosensitive material film is continuously and smoothly brought into close contact with the surface of a hologram original plate, and the film is effectively delaminated after a duplicating process. The apparatus includes a film supply part (31) for supplying a photosensitive material film (1), a film laminating part for successively laminating the supplied film (1) on a hologram original plate (35) with the film (1) being squeezed with a roller (46) from the upper side, a film delaminating part for successively delaminating the film (1) from the original plate (35) from one end thereof with the film (1) being pressed with the roller (46), and a film take-up part (43) for taking up the delaminated film. The film (1) can be laminated on the original plate (35) without trapping air bubbles, and the film (1) can be delaminated from the original plate (35) without causing peel unevenness such as undesired lines. Also disclosed is a hologram produced by the duplicating method.
REFERENCES:
patent: 4856857 (1989-08-01), Takeuchi et al.
patent: 4995685 (1991-02-01), Armstrong et al.
patent: 5282066 (1994-01-01), Yu et al.
patent: 5453338 (1995-09-01), Suga et al.
Hamada Satoru
Ishikawa Toshiharu
Nishimura Hiroyuki
Ueda Kenji
Chang Audrey
Dai Nippon Printing Co. Ltd.
Dzierzynski Paul M.
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