Reprography process: color-copying with sublimable dyes

Details Reprography process: color-copying with sublimable dyes Reprography process: color-copying with sublimable dyes

1977-07-05

1979-01-16

Clingman, A. Lionel

Photocopying

Projection printing and copying cameras

Methods

8 25A, 355 32, G01J 340, D06P 500

Patent

active

041346769

ABSTRACT:
Process for color-copying a colored original which involves the color selections of said original, characterized
(a) by photocopying and developing each of said color selections with developers containing dyestuffs which are sublimable or vaporizable between 130 and 230.degree. C and which correspond to the photocopied color selection,
(b) by transferring these copies successively by superposing its in registration onto an intermediary support, in order to reconstitute the inverse color image of the original, and
(c) by righting said intermediate image by transferring in one heating-step on the final support and the color photocopies obtained by the process.

REFERENCES:
patent: 3601484 (1971-08-01), Dybvig et al.
patent: 3963341 (1976-06-01), Tully
patent: 4017176 (1977-04-01), Beguin et al.

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