05330566 is referenced by 3 patents and cites 14 patents.

The present invention discloses an improved coating for pressure-sensitive record material of the type comprising an aqueous slurry of binder and anionic microcapsules containing a color former and a solvent. The improvement comprises including in addition in the aqueous slurry an aluminum cation as a cationic metal salt in a concentration range of from about 0.15 parts of cation per 100 parts microcapsules to about 3.9 parts of cation per 100 parts microcapsules on a dry weight basis. Enhanced image intensity based on the active weight of coating used as measured by capsule solids is observed.

Title
Capsule coating
Application Number
7/840422
Publication Number
5330566
Application Date
February 24, 1992
Publication Date
July 19, 1994
Inventor
Claude T Copeland
Appleton
WI, US
Agent
Benjamin Mieliulis
Assignee
Appleton Papers
WI, US
IPC
C09D 11/00
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