US4292394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing multicolor toned images on a single photosensitive layer
Assignee: EIDP Inc
•
Filing: 1979-12-31
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Granted: 1981-09-29
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Expires: 1999-12-31
Abstract
Abstract Process for preparation of multicolor images on a single negative-working photosensitive layer which comprises imagewise exposing the layer through a transparency to form tacky image areas; toning the tacky image areas with a toner which becomes swollen or solubilized upon contact with the tacky areas; buffing or rubbing the toned image areas until glossy; and repeating the exposing, toning and buffing or rubbing using a different image-bearing transparency and appropriate toner. The process is useful in preparing multicolor proofs, e.g., maps, textile and wall covering design proofs and samples, etc.
Inventors
- 👤 Victor F. H. Chu
- 👤 James Riesenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:22
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
119 words
Process for the preparation of a multicolor image using a negative-working tonable photosensitive layer which comprises: (a) exposing said layer imagewise to actinic radiation through an image-bearing transparency, the exposed image areas of the layer becoming tacky; (b) toning the tacky image areas by applying and adhering thereto a toner material which is swollen or solubilized when in contact with the tacky image areas, and removing any excess toner; (c) buffing or rubbing the toned image areas whereby the areas become glossy; (d) repeating steps (a), (b) and (c) at least once using a different image-bearing transparency for each exposure (a) and toning with a toner of appropriate color difference from the color of the toner of step (b).
Claim 2
Dependent Claim
119 words
Process for the preparation of a multicolor image using a negative-working tonable photosensitive layer which comprises: (a) exposing said layer imagewise to actinic radiation through an image-bearing transparency, the exposed image areas of the layer becoming tacky; (b) toning the tacky image areas by applying and adhering thereto a toner material which is swollen or solubilized when in contact with the tacky image areas, and removing any excess toner; (c) buffing or rubbing the toned image areas whereby the areas become glossy; (d) repeating steps (a), (b) and (c) at least once using a different image-bearing transparency for each exposure (a) and toning with a toner of appropriate color difference from the color of the toner of step (b).
Claim 3
Dependent Claim
30 words
A process according to claim 1 wherein there is applied completely over the multitoned layer a photohardenable layer which is nonimagewise exposed to actinic radiation to form a protective layer.
Claim 4
Dependent Claim
20 words
A process according to claim 1 wherein prior to step (a) the tonable photosensitive layer is laminated to a surface.
Claim 5
Dependent Claim
11 words
A process according to claim 3 wherein the surface is paper.
Claim 6
Dependent Claim
21 words
A process according to claim 1 wherein prior to step (a) the photosensitive layer is coated onto a surface and dried.
Claim 7
Dependent Claim
11 words
A process according to claim 5 wherein the surface is paper.
Claim 8
Dependent Claim
14 words
A process according to claim 1 wherein the image-bearing transparencies are color separation negatives.
Claim 9
Dependent Claim
21 words
A process according to claim 1 wherein the toned tacky image areas are made glossy by buffing with a soft material.
Claim 10
Dependent Claim
16 words
A process according to claim 8 wherein the buffing is accomplished with a soft cotton cloth.
Claim 11
Dependent Claim
22 words
A process according to claim 1 wherein the toned tacky image areas are made glossy by rubbing with an ionic copolymer resin.
Claim 12
Dependent Claim
77 words
A process according to claim 1 wherein the photosensitive layer comprises at least one thermoplastic binder and a photosensitive system which consists essentially of at least one dihydropyridine compound of the formula: ##STR7## wherein R is alkyl, alkylene, aryl and heteroaryl, R 1 and R 2 , which can be the same or different, are alkyl, and R 3 and R 4 , which can be the same or different, are COOR', COR', CN, R' is alkyl.
Claim 13
Dependent Claim
42 words
A process according to claim 1 wherein the initial toned image areas consist of fine lines and lettering covering less than about 3% of the tonable layer said image areas not being buffed or rubbed prior to repeating steps (a) and (b).
Claim 14
Dependent Claim
19 words
A process according to claim 1 wherein step (b) is accomplished at a temperature up to about 70° C.
Claim 15
Dependent Claim
33 words
A process according to claim 1 wherein the photosensitive layer contains an organic plasticizer compound which swells or solubilizes the toner when the toner is brought in contact with the tacky image areas.
Claim 16
Dependent Claim
19 words
A process according to claim 1 wherein the multicolor image is transferred to an image receptor at elevated temperature.
Claim 17
Dependent Claim
12 words
A process according to claim 15 wherein the image receptor is fabric.
Claim 18
Dependent Claim
12 words
A process according to claim 16 wherein the fabric is polyethylene terephthalate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |