Heat-sensitive recording material
AssigneeKanzaki Paper Mfg. Co., Ltd.
InventorsNaoki Yonese, Masato Nakamura
Life of this patent
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Abstract
A heat-sensitive recording material which has a high recording density, ensures recorded images of high quality and allows printing on the reverse side. A base paper for the recording material is subjected to multilayer paper making by means of a paper machine having a multilayer head box. The surface layer of the base paper has a bulk density of below 0.85 g/cu. cm and a printing smoothness of above 15% (pressure: 20 kg/sq. cm) as measured by means of a printing smoothness tester.
Claims16
A heat-sensitive recording material comprising a base paper with a heat-sensitive recording layer which can form images by heat, the improvements comprising said base paper being made by means of a paper machine having a multi-layer head box so as to have two or more layers, said base paper having a bulk density of below 0.85 g/cu. cm as measured by a method under JIS P-8118, a surface layer of said base paper on which said recording layer is applied having a printing smoothness of above 15% as measured under a pressure of 20 kg/sq. cm.
Dependencies are inferred from the claim text.