Bleaching and dyeing; fluid treatment and chemical modification – Diffusion transfer dyeing process – transfer sheet and product – Dry heat treatment for penetration
Reexamination Certificate
2006-03-21
2006-03-21
Einsmann, Margaret (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Diffusion transfer dyeing process, transfer sheet and product
Dry heat treatment for penetration
C156S230000
Reexamination Certificate
active
07014664
ABSTRACT:
A dyeing method of a plastic lens (10), including the steps of placing the lens (10) in a vacuum vapor deposition device (20); placing a base body (1) for dyeing in the vapor deposition device (20), the base body having a dye application area (2) in which a sublimatable dye is applied, so that the dye application area (2) faces a surface of the lens to be dyed; and heating the base body (1) in the vapor deposition device (20) under almost a vacuum, while restraining a rise in temperature of the lens (10), to sublimate the dye, depositing the sublimed dye on the lens.
REFERENCES:
patent: 4211823 (1980-07-01), Suzuki et al.
patent: 6520999 (2003-02-01), Kamata et al.
patent: 2001/0014988 (2001-08-01), Inuzuka
patent: 0982432 (2000-01-01), None
Einsmann Margaret
Nidek Co. Ltd.
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