US3634087A
Expired / Lapsed
US
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Color proofing system
Assignee: Eastman Kodak Co
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Filing: 1969-06-06
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Granted: 1972-01-11
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Expires: 1989-06-06
Abstract
Abstract Lithographic color proofing is accomplished with transparent supports having hydrophilic surfaces and oleophilic images on said surfaces. The images are colored by an image lacquer which contains a greasy printing ink as an integral part of the lacquer.
Inventors
- 👤 James F Houle
- 👤 Gilden R Van Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; G; G03; G03F; G03F3/00; G03F3/10; G03F7/00; G03F7/004; G03F7/016; G03G; G03G13/00; G03G13/06; G03G13/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
The invention according to claim 1 wherein the light-sensitive coating and ink-receptive image comprise a diazoresin.
Claim 2
Dependent Claim
33 words
A color proofing process wherein a plurality of elements prepared according to the process of claim 1 by exposure to different color separation images of the subject are superposed in register for viewing.
Claim 3
Dependent Claim
158 words
A process according to claim 3 for preparing an element useful in the preparation of color proofs for a color lithographic printing system which comprises exposing to a color separation image of the printing system a color proofing element comprising a transparent support having on one side a hydrophilic surface including a complex of an alkyl titanate and at least one member of the class consisting of fluosilicic acid, hydrofluoric acid, fluoboric acid, hydrogen peroxide and a mixture of hydrogen peroxide and phosphoric acid, and a light-sensitive diazoresin coating on said hydrophilic surface, thereby forming a greasy printing ink-receptive diazoresin image in the region of exposure, developing the exposed resin coating to remove the unexposed diazoresin from the hydrophilic surface, and imbibing into the resin image from a two-phase lacquer composition containing an aqueous phase and a resinous solvent phase the same greasy printing ink to be used in the printing system to record said color separation image.
Claim 4
Dependent Claim
49 words
A color proofing process wherein a plurality of color proofs prepared according to the process of claim 4 by exposure to different color separation images of the subject are superposed in register for viewing and prediction of the quality of a press proof obtainable from the color separation images.
References Cited (Backward Citations)
US3258337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |