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EP0454083A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Direct digital halftone color proofing involving diode laser imaging

Assignee: Eastman Kodak Co
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Filing: 1991-04-24
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Granted: —
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Expires: 2011-04-24
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Abstract

Abstract A process is described for producing a direct digital, halftone color proof of an original image on a dye-receiving element, the proof being used to represent a printed color image obtained from a printing press, comprising: a) generating a set of electrical signals which is representative of the shape and color scale of an original image; b) contacting a dye-donor element comprising a support having thereon a dye layer and an infrared-absorbing material with a first dye-receiving element comprising a support having thereon a polymeric, dye image-receiving layer; c) using the signals to imagewise-heat by means of a diode laser the dye-donor element, thereby transferring a dye image to the first dye-receiving element; and d) retransferring the dye image to a second dye image-receiving element which has the same substrate as the printed color image.

Inventors

  • 👤 Charles David C/O Eastman Kodak Co. Deboer

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 11:59
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/46; B41M5/465; B41M5/382; B41M5/38257; G; G03; G03F; G03F3/00; G03F3/10; G03F3/108; B41M5/392

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 133 words
A process for producing a direct digital, halftone color proof of an original image on a dye-receiving element, said proof being used to represent a printed color image obtained from a printing press, comprising: a) generating a set of electrical signals which is representative of the shape and color scale of said original image; b) contacting a dye-donor element comprising a support having thereon a dye layer and an infrared-absorbing material with a first dye-receiving element comprising a support having thereon a polymeric, dye image-receiving layer; c) using said signals to imagewise-heat by means of a diode laser said dye-donor element, thereby transferring a dye image to said first dye-receiving element; and d) retransferring said dye image to a second dye image-receiving element which has the same substrate as said printed color image.
Claim 2
Dependent Claim 24 words
The process of Claim 1 characterized in that cyan, yellow, magenta and black dye-donor elements are employed to produce a halftone full color proof.
Claim 3
Dependent Claim 20 words
The process of Claim 1 characterized in that each said dye-donor element contains an infrared-absorbing dye in said dye layer.
Claim 4
Dependent Claim 15 words
The process of Claim 3 characterized in that said infrared-absorbing dye is a cyanine dye.
Claim 5
Dependent Claim 25 words
The process of Claim 1 characterized in that spacer beads are employed in the dye-receiving layer of the dye-receiver during dye transfer by said laser.
Claim 6
Dependent Claim 22 words
The process of Claim 1 characterized in that both said dye and receiver binder are transferred to said second dye image-receiving element.

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