Shading paper

Patent name shading paper Patent applicant Kishu Paper Co., Ltd. Principal applicant Address Tokyo, Japan inventor Nakamura Tatsuya; Tanaka Kenji Application (Patent) No. 200480000664.2 Date of application 2004.06.17 Certification Date Approval No. 1697903 Auditing announcement date 2005.11. 16 Specification CD-ROM D0546 Main Classification No. D21H21/28 Classification No. D21H21/28; D21H19/84; B65D65/16 Subsidiary Original Application No. Priority Item 2003.6.27 JP 003867/2003; 2003.10.9 JP 351368/2003 Abstracts A light-shielding paper is provided as a part or all of a package containing a photosensitive material, characterized in that the light-shielding paper includes a substrate including pulp as a main component, and the substrate has a front surface and a rear surface, each One surface is coated with a white coating, and the shading paper has a light transmittance of 6% or less than 6% for light having a wavelength of 200 to 800 nm. The shading paper may have sufficient shading characteristics without using a paper made of a metal sheet such as aluminum, paper sprayed with metal powder, or a colored resin film that generates toxic gas or harmful residues when incinerated. Slaves 1. A shading paper comprising a matrix containing pulp as a main component, characterized in that the matrix has a front surface and a back surface, each surface is coated with a white coating, and the shading paper is Light having a wavelength of 200 to 800 nm has a light transmittance of 6% or less. International Application 2004-06-17 PCT/JP2004/008533 International Publication 2005-01-06 WO2005/001200 Date of Entry into the Country Patent Agencies China Council for the Promotion of International Trade Patent and Trademark Office Agency Address Agent Dong Min