Pressure-sensitive record system

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United States of America Patent

PATENT NO 4448445
SERIAL NO

06347171

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Abstract

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A pressure sensitive copy system comprising a plurality of sheets in superposed relationship in which at least one sheet comprises a semi-translucent support bearing either an autogenous layer or a color-developer layer and at least one other sheet comprises a support bearing the other of such layers. The autogenous layer comprises microcapsules and electron-acceptor material in which the microcapsules contain chromogenic material sufficient to form a visible image in the autogenous layer and in the color-developer layer.

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Patent Owner(s)

Patent OwnerAddress
WALLACE COMPUTER SERVICES INC A CORP OF U S4600 W ROOSEVELT ROAD HILLSIDE IL

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, John C H Naperville, IL 24 505
Dimitriou, Theodore Deerfield, IL 2 63

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