Donor material for carbonless copying

Details Donor material for carbonless copying Donor material for carbonless copying

1978-09-13

1980-03-04

Hess, Bruce H.

Textiles: manufacturing

106 21, 106 24, 252316, 427150, 427151, 428307, 428323, 428327, 428402, 428914, B41M 522

Patent

active

041914031

ABSTRACT:
In a donor material for carbonless copying which mainly consists of a carrier sheet and a multiplicity of frangible microcapsules containing a suitable dye precursor in a liquid medium and secured to one face of the sheet, spacer particles of soybean protein are interspersed in a relatively small amount between the microcapsules and project beyond the microcapsules away from the carrier sheet to protect the microcapsules against premature fracture.

REFERENCES:
patent: 3900671 (1975-08-01), Evans
patent: 3996060 (1976-12-01), Johnson
patent: 3996061 (1976-12-01), Johnson

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