Heat-sensitive recording paper and filler therefor

Details Heat-sensitive recording paper and filler therefor Heat-sensitive recording paper and filler therefor

1984-01-27

1985-04-02

Hess, Bruce H.

Recorders

Record receiver deforming

106288B, 346225, 428331, B41M 518

Patent

active

045090645

ABSTRACT:
Disclosed is a filler for a heat-sensitive recording paper comprising finely divided amorphous silica having a BET specific surface area of 10 to 100 m.sup.2 /g and a bulk density of 0.14 to 0.30 g/cc, said finely divided amorphous silica having such a secondary particle size distribution that secondary particles having a size smaller than 4 microns, as measured by the centrifugal precipitation method, occupy at least 90% by weight of the total particles.
This filler is excellent in the effects of preventing the background coloration, improving the lubricating property, preventing the adhesion of scum and improving the image density.

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