Chromogen solutions and pressure-sensitive mark-recording...

Details Chromogen solutions and pressure-sensitive mark-recording... Chromogen solutions and pressure-sensitive mark-recording...

B - Operations, Transporting

41

M

42/11

B41M 5/165 (2006.01)

Patent

CA 1148355

43-21-4592A CHROMOGEN SOLUTIONS AND PRESSURE-SENSITIVE MARK-RECORDING SYSTEMS ABSTRACT Pressure-sensitive mark-recording systems of chromogens comprised of diphenylmethane derivatives in solution with selected diester solvents is disclosed as well as pressure-sensitive mark-recording systems comprised of (a) sheet material, (b) mark-forming components supported by the sheet material and arranged in juxtaposition but in unreactive condition, a chromo- gen, and an acid clay sensitizer for the chromogen, and (c) the solvent supported by the sheet material but separated from the sensitizing agent by a physical barrier which is rupturable on the application of a marking instrument to the sheet material.

358959

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