Artificial finger print liquid, testing method for optical...

Details Artificial finger print liquid, testing method for optical... Artificial finger print liquid, testing method for optical...

2006-03-20

2009-12-29

Cleveland, Michael (Department: 1792)

Coating processes

Nonuniform coating

C427S001000, C118S031500, C118S200000

Reexamination Certificate

active

07638171

ABSTRACT:
A method for using a low-cost artificial fingerprint liquid for quantitatively and with a good reproducibility evaluating an anti-staining property, and a fingerprint adhering property or a fingerprint removing property on the surface of an optical disk such as a reproduction-only optical disk, optical recording disk, magneto-optical recording disk, various displays such as a CRT, and various substances such as glass. A stamp is used to transfer the artificial fingerprint solution to the surface to be tested. An artificial fingerprint liquid comprising a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance. The dispersion medium preferably has a surface tension ranging from 20 to 50 mN/m at 25° C., and preferably is selected from at least one of higher fatty acid, derivative of higher fatty acid, terpens, and derivatives of terpens. The fine-particle-form substance is at least one selected from inorganic fine particles and organic fine particles.

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