Pressure-sensitive record material

Details Pressure-sensitive record material Pressure-sensitive record material

B - Operations, Transporting

41

M

42/10

B41M 5/145 (2006.01) C07D 491/04 (2006.01) C09B 11/26 (2006.01) C09D 11/00 (2006.01)

Patent

CA 1141541

ABSTRACT OF THE DISCLOSURE A substantially colorless marking liquid, particularly for use in pressure-sensitive record material, comprising (a) a color- less chromogenic material, (b) a solvent for said chromogenic material and (c) an additive for controlling CB decline. The additive for controlling CB decline, i.e., controlling the capability of the CB sheet to produce an image of satisfactory intensity even after exposure of the CB coating to light, includes certain chromogenic materials such as Pyridyl Blue and phenol derivatives having a free reactive (ortho- or para-) position the marking liquid helps to prevent CB decline in, for example, carbonless copy paper, a long-standing problem in the art

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