Pressure marking materials

Details Pressure marking materials Pressure marking materials

1975-05-30

1979-04-17

Pianalto, Bernard D.

Coating processes

Transfer or copy sheet making

Reactive components

427153, 427248B, 427276, 427288, 428307, B41M 312, B41M 500

Patent

active

041501748

ABSTRACT:
Improved pressure marking fibrous record material such as paper is provided wherein the rear surface is in contact with a profusion of liquid droplets of marking material such as ink. The fibers of the paper are vapor treated to render them repellent to the liquid marking material without substantially reducing the porosity of the sheet. Upon application of patterned marking pressure to the paper, the ink droplets are forced through the sheet to form a visible image of the pattern on the top surface. The repellent treatment reduces lateral flow of the ink in the sheet and improves image definition.

REFERENCES:
patent: 2412470 (1946-12-01), Norton
patent: 3110386 (1963-11-01), Raines
Webster, 1966, p. 809.

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