Chemically reactive recording medium

Details Chemically reactive recording medium Chemically reactive recording medium

1977-05-16

1979-10-30

Herbert, Jr., Thomas J.

Textiles: manufacturing

179172, 229 69, 427145, 427150, 427153, 427261, 428199, 428201, 428207, 428914, B41L 136

Patent

active

041726057

ABSTRACT:
A ribbon, adapted for use on an impact printer, is provided wherein the ribbon is impregnated with a first substantially colorless substance which acts as a color-former when reacted with a second substantially colorless substance acting as a color-developer, present on a portion of a substrate. Upon the transfer of the color-former from the ribbon to the substrate by impact, a colored image will form on those areas of the substrate which are coated or impregnated with the color-developer. Images may thus be selectively transferred to an interior ply of a multi-ply business forms assembly by the conventional transfer methods without appearing on the exterior, impact receiving ply of such an assembly.

REFERENCES:
patent: 2035768 (1936-03-01), Sherman et al.
patent: 3104799 (1963-09-01), Steidinger
patent: 3244550 (1966-04-01), Farnham et al.
patent: 3914511 (1975-10-01), Vassiliades
patent: 3967835 (1976-07-01), Ozutsumi et al.
patent: 3981523 (1976-09-01), Maalouf
patent: 4036511 (1977-07-01), Maalouf

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