MANUFACTURE OF COPYING PAPER

PURPOSE:To set the difference between an in-layer statical friction coefficient and an interlayer statical friction coefficient of all piled copying forms, to <=0.03, by providing a silica pigment to paper, in case of a manufacturing process of a copying form. CONSTITUTION:It is enough to only mo...

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Main Authors INATOME JIYOUJI, SAKAMOTO SHIYOU, OOHASHI TAIJI, KIJIMA TSUNEAKI, MAKIYAMA KOUICHI, TSUCHIDA KOUZOU, ISHIDA HIROMI
Format Patent
LanguageEnglish
Published 07.06.1983
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
IMPREGNATING OR COATING OF PAPER
MAGNETOGRAPHY
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PHOTOGRAPHY
PHYSICS
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Summary:PURPOSE:To set the difference between an in-layer statical friction coefficient and an interlayer statical friction coefficient of all piled copying forms, to <=0.03, by providing a silica pigment to paper, in case of a manufacturing process of a copying form. CONSTITUTION:It is enough to only monitor a difference DELTAf between in-layer statical friction force and interlayer statical friction force under a load equivalent to a paper feed roller load, or the difference DELTAmu of these coefficients, and when DELTAf or DELTAmu is equal to a constant threshold value, or DELTAf or DELTAmu is larger than this threshold value, overlapped feed is executed easily, and when it is smaller, no overlapped feed occurs. As for this value, it is within a range of DELTAf<15 or DELTAmu<0.03. As far as it is concerned, when a silica pigment is added in the course of a manufacturing process of a form, a drop of DELTAf or DELTAmu appears remarkably. As for the silica pigment, ultrafine particles whose particle diameter is 10mmu-1mu, of hydrous silicic acid obtained by decomposing a sodium silicate solution by acid or salts, or silicic acid anhydride obtained from the sodium silicate solution are desirable.
Bibliography:Application Number: JP19810192778