Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified reactant isolating material or capsule wall...
Patent
1985-12-02
1987-06-23
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Identified reactant isolating material or capsule wall...
503216, 503217, 503221, 503225, 427150, 427151, B41M 518
Patent
active
046757074
ABSTRACT:
A thermally-sensitive color-forming composition is disclosed which comprises chromogenic material and certain acidic developer material. Record material comprising this color-forming composition exhibits greatly improved background coloration.
Petersen Thomas C.
Vervacke Steven L.
Appleton Papers Inc.
Hess Bruce H.
McKinney E. Frank
Phillips, Jr. Paul S.
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