摘要 |
PROBLEM TO BE SOLVED: To obtain lightproof paper which has a highly light screening property and a high whiteness degree and records a precision image such as bar code printing, etc. SOLUTION: The lightproof paper is obtained by providing both sides of base paper having≤1% transmittance at wavelength of 200-1,000 nm with white coating layers containing at least one kind of white pigment and has≥80.0% whiteness degree measured by a method defined by ISO2470 using a xenon flush lamp as a light source. COPYRIGHT: (C)2004,JPO&NCIPI
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