Developers for pressure-sensitive recording and developing sheet

Details Developers for pressure-sensitive recording and developing sheet Developers for pressure-sensitive recording and developing sheet

1979-03-05

1980-08-26

Hess, Bruce H.

Textiles: manufacturing

106 21, 427150, 427151, 428307, 428914, B41M 516, B41M 522

Patent

active

042192196

ABSTRACT:
In a pressure sensitive recording sheet comprising a layer of microcapsules containing a color former and a color developer, said layer of microcapsules and said color developer being on the same or independent supports, the improvement which comprises said developer being a polyvalent metal salt of a substituted salicylic acid represented by the general formulae (I) or (II): ##STR1## wherein R represents a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group and Ar and Ar' which may be the same or different each represents an aryl group.

REFERENCES:
patent: 3864146 (1975-02-01), Oda et al.
patent: 3924027 (1975-12-01), Saito et al.

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