B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
B41M 5/20 (2006.01) B41C 1/10 (2006.01) B41J 2/385 (2006.01) B41M 5/00 (2006.01) B41M 5/52 (2006.01)
Patent
CA 2258141
A record sheet for use in an electro-coagulation printing method, which comprises a base sheet and a layer provided thereon composed of at least one filler selected from the group consisting of alumina sol, boemite, pseudo boemite, synthetic amorphous silica, silica sol and colloidal silica and a binder, wherein said record sheet satisfies the following properties; (i) a wet time of the record sheet obtained from a liquid absorption curve of pure water measured by a dynamic scanning absorptometer being not more than 15 milliseconds, ( ii ) an absorption coefficient of the record sheet obtained from a liquid absorption curve of pure water measured by a dynamic scanning absorptometer being at least 10 ml/m2s-1/2 , and ( iii ) a contact ratio of the record sheet with the coagulated colloids measured by a specular reflection smoothness tester under a pressure of 40 kg/cm2 with a ray having a wavelength of 0.5 .MU. m being at least 40% and further, ( iv ) a Beck smoothness of the coating layer surface measured in accordance with JIS P 8119 being 250 seconds or more. The record sheet is suitable for a high grade-printing requiring a high optical density and excellent tone reproduction, such as a book of paintings and a photograph.
Hattori Yutaka
Hayashi Shunji
Mouri Toyohisa
Shibatani Masaya
Takagi Toshio
Marks & Clerk
Tokushu Paper Mfg. Co. Ltd.
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