The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1993
Filed:
Apr. 04, 1990
Shigehisa Tamagawa, Shizuoka, JP;
Masafumi Kashiwagi, Shizuoka, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A support for used in photographic printing paper is provided comprising a base paper covered on both sides with polyolefin coating, said base paper being one which has undergone calender treatment between a metallic roll and a synthetic resin roll and then between a metallic roll and another metallic roll. In a preferred embodiment, the calender treatment is performed at the final finishing process. The calender treatment between the metallic roll and the synthetic resin roll is performed in such a manner that the density of the paper is increased to from 0.70 to 1.00 g/cm.sup.3 and the calender treatment between the metallic rolls is performed in such a manner that the density of the paper is increased to from 1.00 to 1.20 g/cm.sup.3. The material of the synthetic resin roll is selected from the group consisting of urethane resin, ebonite resin, nylon resin, aramide resin and isocyanurate resin. The hardness of the synthetic resin roll is from 60 to 90, preferably 75 to 90 in terms of Shore hardness. The surface temperature of the synthetic resin roll and the metallic rolls are in the range of 30.degree. to 150.degree. C., preferably 50.degree. to 100.degree. C., and 50.degree. to 250.degree. C., preferably 70.degree. to 150.degree. C., respectively.