US3656952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-reversal imaging process and recording elements produced thereby
Assignee: 3M Co
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Filing: 1968-07-19
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Granted: 1972-04-18
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Expires: 1988-07-19
Abstract
Abstract A non-reversal imaging process wherein a recording element having a layer of a photosensitive composition which upon light exposure produces light-generated nuclei of a metal more noble than silver, i.e. Pd, Pt, Au, is exposed to an image. The exposed element is treated with a solution of trimethylamine borane, triethylamine borane, t-butylamine borane, pyridine borane, morpholine borane, sodium borohydride, lithium aluminum hydride or hydrazine to generate in the unexposed areas of the layer chemically reduced metal nuclei which are more highly catalytic to the electroless deposition of a non-noble metal than the light generated nuclei. Non-noble metal is then electrolessly plated selectively on the chemically reduced nuclei to produce a nonreversed image.
Inventors
- 👤 Richard A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:12
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/62; G03C1/64
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
14 words
The recording element of claim 1 wherein said noble metal is palladium or platinum.
Claim 2
Dependent Claim
24 words
The recording element of claim 1 wherein said noble metal is palladium or platinum and wherein said first non-noble metal is cobalt or nickel.
Claim 3
Dependent Claim
14 words
The recording element of claim 1 wherein said non-noble metal deposit is electrically conductive.
Claim 4
Dependent Claim
28 words
The recording element of claim 1 additionally comprising a sEcond non-noble metal electrolessly deposited upon said first non-noble metal deposit, said second non-noble metal deposit being electrically conductive.
Claim 5
Dependent Claim
13 words
The recording element of claim 5 wherein said second non-noble metal is copper.
Claim 6
Dependent Claim
81 words
A recording element comprising a layer having light-exposed areas and non-light-exposed areas, said layer having light-generated nuclei of a metal more noble than silver selectively in said light-exposed areas and having chemically reduced nuclei of said metal more noble than silver selectively in non-light-exposed areas, said chemically reduced nuclei being more highly catalytic to the electroless deposition of a non-noble metal than are said light-generated nuclei, said layer additionally having a non-noble metal selectively electrolessly deposited on said chemically reduced nuclei.
Claim 7
Dependent Claim
108 words
A recording element comprising a layer having light-exposed areas and non-light-exposed areas, said layer having light-generated nuclei of a metal more noble than silver selectively in said light-exposed areas and having in non-light-exposed areas chemically reduced nuclei resulting from the treatment of said layer with a solution of trimethylamine borane, triethylamine borane, dimethylamine borane, diethylamine borane, t-butylamine borane, pyridine borane, morpholine borane, sodium borohydride, lithium aluminum hydride or hydrazine, said chemically reduced nuclei being more highly catalytic to the electroless deposition of a non-noble metal than are said light-generated metal nuclei, said layer additionally having a deposit of a non-noble metal selectively superimposed on said chemically reduced nuclei.
Claim 8
Dependent Claim
135 words
A non-reversal imaging process comprising the sequential steps of a. exposing to a light image an element having a photosensitive layer comprising a composition capable, upon light exposure, of reducing compounds of metals more noble than silver to nuclei of said metals; b. providing in said photosensitive layer a compound of a metal more noble than silver, thereby producing light generated nuclei of said metal in light-exposed areas of said photographic element; c. treating said element with a solution of trimethylamine borane, triethylamine borane, dimethylamine borane, diethylamine borane, t-butylamine borane, pyridine borane, morpholine borane, sodium borohydride, lithium aluminum hydride or hydrazine to cause generation selectively in the non-light-exposed areas of said photographic element of chemically reduced nuclei of said metal; and d. plating non-noble metal differentially on said chemically reduced metal nuclei by electroless deposition.
Claim 9
Dependent Claim
14 words
The process of claim 9 wherein said non-noble metal is cobalt, nickel or copper.
Claim 10
Dependent Claim
101 words
A non-reversal imaging process comprising the subsequential steps of a. exposing to a light image a recording element having a photosensitive layer comprising a composition which upon light exposure is capable of producing nuclei of metal more noble than silver; b. treating said photosensitive layer with a solution of trimethylamine borane, triethylamine borane, dimethylamine borane, diethylamine borane, t-butylamine borane, pyridineborane, morpholine borane, sodium borohydride, lithium aluminum hydride, or hydrazine to cause generation selectively in non-light exposed areas of chemically reduced metal nuclei of said noble metal; and c. plating non-noble metal differentially on said chemically reduced metal nuclei by electroless deposition.
Claim 11
Dependent Claim
96 words
A non-reversal imaging process comprising the sequential steps of a. exposing to a light image a recording element having a photosensitive layer comprising a composition which, upon light exposure, is capable of producing nuclei of platinum or palladium; b. treating said photosensitive layer with a solution of trimethylamine borane, triethylamine borane, dimethylamine borane, diethylamine borane, t-butylamine borane, pyridineborane, morpholine borane, sodium borohydride, lithium aluminum hydride, or hydrazine to cause generation selectively in non-light-exposed areas of chemically reduced nuclei of platinum or palladium; and c. plating non-noble metal differentially on said chemically reduced nuclei by electroless deposition.
Claim 12
Dependent Claim
110 words
A non-reversal imaging process comprising the sequential steps of a. exposing to a light image a recording element having a photosensitive layer comprising a composition which upon light exposure is capable of producing nuclei of a metal more noble than silver, and b. treating said photosensitive layer with a solution of a non-noble metal compound and trimethylamine borane, triethylamine borane, dimethylamine borane, diethylamine borane, t-butylamine borane, pyridine borane, morpholine borane, sodium borohydride, or hydrazine to cause generation selectively in non-light-exposed areas of said photographic element of chemically reduced metal nuclei of said noble metal and to plate said non-noble metal differentially on said chemically reduced metal nuclei by electroless deposition.
Claim 13
Dependent Claim
95 words
A non-reversal imaging process comprising the sequential steps of a. exposing to a light image a recording element comprising a photosensitive layer having a composition which upon light exposure is capable of generating nuclei of platinum or palladium; and b. treating said exposed photosensitive layer with an aqueous dimethylamine borane solution having, as a component, a compound of nickel or cobalt to cause development of chemically reduced nuclei of platinum or palladium in non-light exposed areas of said photosensitive layer and to deposit nickel or cobalt differentially on said chemically reduced nuclei by electroless deposition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |