Color developer compositions for carbonless paper copying system

Details Color developer compositions for carbonless paper copying system Color developer compositions for carbonless paper copying system

1994-05-27

1997-04-29

Hess, B. Hamilton

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Having nonreactant particles of defined size

106 3118, 106 3117, 503209, 503214, 503225, B41M 5155, C09D 1100

Patent

active

056248822

ABSTRACT:
There is disclosed a coating composition for the preparation of a CF sheet (i.e. a receiving sheet) of a carbonless paper copying system comprising a CF sheet and a CB sheet (i.e. a donating sheet). The coating composition comprises a color developer and an extender, wherein the extender comprises a particulate inorganic material which has been modified by treatment with a treating agent which has (i) a non-polar hydrophobic portion comprising at least one hydrocarbon group having a chain length of from 8 to 30 carbon atoms and (ii) a polar portion which is capable of binding with sites on the surface of the pigment particles.

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