Dyeing method of dyeing plastic lens and dyeing device

Bleaching and dyeing; fluid treatment and chemical modification – Diffusion transfer dyeing process – transfer sheet and product – Dry heat treatment for penetration

Reexamination Certificate

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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

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