Masking film

Details Masking film Masking film

G - Physics

03

C

96/205

G03C 1/76 (2006.01) G03F 1/00 (2006.01)

Patent

CA 2002502

MASKING FILM Abstract A lightsafe masking film is disclosed which includes a transparent substrate, and a transparent, lightsafe layer peelably provided over the surface of the substrate and containing a light yellow colorant and a blue colorant so that the color of the lightsafe layer is light green and the spectral transmittance of the lightsafe layer does not exceeds 1 % in the wavelength region of between 350 nm and Lmax, wherein Lmax is 420 nm or more, but exceeds 1 % in the wavelength region of longer than Lmax with the maximum spectral transmitance of the lightsafe layer in the wavelength region of 500-570 nm being greater than 50 %. The light green masking film is suitably used together with a conventional yellow or amber masking film for masking a photosensitive material in photomechanical reproduction process.

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