Image producing system

Details Image producing system Image producing system

1977-02-11

1980-01-29

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of carbohydrate

282 275, 427150, 428364, 428488, 428914, B41M 512

Patent

active

041862430

ABSTRACT:
An image producing system is provided, wherein an activator composition e.g. made up as a crayon or pencil, when contacted with paper substrate containing an azo color former yields an image by color change.

REFERENCES:
patent: 3769045 (1973-10-01), Maierson et al.
patent: 3823022 (1974-07-01), Thomas
patent: 3900215 (1975-08-01), Kato et al.
patent: 3955025 (1976-05-01), Matsukawa et al.
patent: 3979550 (1976-09-01), Panken
patent: 3983292 (1976-09-01), Saito et al.
patent: 4021059 (1977-05-01), Skelly et al.
patent: 4023830 (1977-05-01), Skelly et al.

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