US3785830A
Expired / Lapsed
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Photothermographic element,composition and process
Assignee: Eastman Kodak Co
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Filing: 1972-06-14
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Granted: 1974-01-15
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Expires: 1992-06-14
Abstract
Abstract WHEREIN N IS 1 TO 10, R1 represents atoms completing a 5-member heterocyclic nucleus, Z is alkylene, such as alkylene containing 1 to 10 carbon atoms, and (c) a photosensitive component consisting essentially of photosensitive silver halide, in the absence of an image stabilizer or stabilizer precursor, can provide a developed and stabilized image upon imagewise exposure and then overall heating of the element. The photothermographic element can, but need not, contain a binder for the described components. Other addenda employed in photothermographic materials can be employed with the photothermographic element. A photothermographic element comprising a support having thereon (a) a reducing agent, (b) a silver salt of a thione compound, the thione compound being represented by the formula:
Inventors
- 👤 M Sullivan
- 👤 R Cole
- 👤 W Humphlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49809; Y; Y10; Y10S; Y10S430/00; Y10S430/133
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
17 words
The photothermographic element of claim 1 wherein said thione compound is a thiazoline-2-thione represented by the formula:
Claim 2
Dependent Claim
17 words
The photothermographic element of claim 1 wherein said reducing agent is a phenolic silver halide developing agent.
Claim 3
Dependent Claim
14 words
The photothermographic element of claim 1 wherein said photosensitive silver halide is silver iodide.
Claim 4
Dependent Claim
51 words
A photothermographic element comprising a support having thereon a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothiazoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thiazoline-2-thione, and combinations thereof, c. photosensitive silver halide, and d. a binder, in the absence of an image stabilizer or stabilizer precursor.
Claim 5
Dependent Claim
69 words
The photothermographic element of claim 5 comprising a support having thereon per square foot of support a. about 0.25 X 10 3 to 1 X 10 3 moles of HQ b. about 0.25 X 10 3 to 2 X 10 3 moles of silver as said silver salt of a thiazoline-2-thione compound, and c. about 0.02 X 10 3 to 0.12 X 10 3 moles of said silver halide.
Claim 6
Dependent Claim
28 words
A photothermographic element comprising a support having thereon a. a reducing agent b. a silver salt of a thione compound, said thione compound being represented by the formula:
Claim 7
Dependent Claim
17 words
The photothermographic element of claim 7 wherein said thione compound is a thiazoline-2-thione represented by the formula:
Claim 8
Dependent Claim
17 words
The photothermographic element of claim 7 wherein said reducing agent is a phenolic silver halide developing agent.
Claim 9
Dependent Claim
14 words
The photothermographic element of claim 7 wherein said photosensitive silver halide is silver iodide.
Claim 10
Dependent Claim
53 words
A photothermographic element comprising A support having thereon a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothiazoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thiazoline-2-thione, and combinations thereof c. silver iodide in the absence of a binder and in the absence of an image stabilizer or stabilizer precursor.
Claim 11
Dependent Claim
69 words
The photothermographic element of claim 11 comprising a support having thereon per square foot of support a. about 0.25 X 10 3 to 1 X 10 3 moles of hydroquinone b. about 0.25 X 10 3 to 2 X 10 3 moles of silver as said silver salt of a thiazoline-2-thione compound, and c. about 0.02 X 10 3 to 0.12 X 10 3 moles of said silver halide.
Claim 12
Dependent Claim
24 words
A photothermographic composition comprising a. a reducing agent, b. a silver salt of a thione compound, said thione compound being represented by the formula:
Claim 13
Dependent Claim
17 words
The photothermographic composition of claim 13 wherein said thione compound is a thiazoline-2-thione represented by the formula:
Claim 14
Dependent Claim
17 words
The photothermographic composition of claim 13 wherein said reducing agent is a phenolic silver halide developing agent.
Claim 15
Dependent Claim
14 words
The photothermographic composition of claim 13 wherein said photosensitive silver halide is silver iodide.
Claim 16
Dependent Claim
33 words
A photothermographic composition comprising a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothiazoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thiazoline-2-thione, and combinations thereof. c. photosensitive silver halide
Claim 17
Dependent Claim
13 words
A photothermographic composition of claim 13 wherein said reducing agent is a hydroquinone.
Claim 18
Dependent Claim
21 words
A photothermographic composition comprising a. a reducing agent, b. a silver salt of a thione compound, said compound containing the moiety
Claim 19
Dependent Claim
49 words
A photothermographic composition comprising a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothizoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thiazoline-2-thione, and combinations thereof c. silver iodide, in thE absence of a binder and in the absence of an image stabilizer or stabilizer precursor.
Claim 20
Independent Claim
31 words
A method of developing and stabilizing an image in a photothermographic element comprising a support having thereon a. a reducing agent, b. a silver salt of thione compound containing the unit:
Claim 21
Dependent Claim
16 words
The method of claim 21 wherein said thione compound is a thiazoline-2-thione represented by the formula:
Claim 22
Dependent Claim
18 words
The method of claim 21 wherein said photothermographic element is heated for about 1 to about 60 seconds.
Claim 23
Independent Claim
75 words
The method of developing and stabilizing an image in a photothermographic element comprising a support having thereon a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothiazoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thizoline-2-thione, and combinations thereof, c. a photosensitive silver halide, in the absence of an image stabilizer or stabilizer precursor, comprising heating said photothermographic element to about 100*C. to about 250*C. for about 1 to about 60 seconds.
Claim 24
Dependent Claim
66 words
The method of claim 24 wherein said element comprises a support having thereon a. about 0.25 X 10 3 to 1 X 10 3 moles of HQ b. about 0.25 X 10 3 to 2 X 10 3 moles of silver as said silver salt of a thiazoline-2-thione compound, and c. about 0.02 X 10 3 to 0.12 X 10 3 moles of said silver halide.
Claim 25
Independent Claim
34 words
A method of developing and stabilizing an image in a photothermographic element comprising a support having thereon a. a reducing agent b. a silver salt of a thione compound, said compound containing the moiety
Claim 26
Dependent Claim
16 words
The method of claim 26 wherein said thione compound is a thiazoline-2-thione represented by the formula:
Claim 27
Dependent Claim
18 words
The method of claim 26 wherein said photothermographic element is heated for about 1 to about 60 seconds.
Claim 28
Independent Claim
72 words
The method of developing and stabilizing an image in a photoThermographic element comprising a support having thereon a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothiazoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thiazoline-2-thione, and combinations thereof c. a photosensitive silver halide in the absence of an image stabilizer or stabilizer precursor, comprising heating said photothermographic element to about 100*C. to about 250*C. for about 60 seconds.
Claim 29
Dependent Claim
66 words
The method of claim 29 wherein said element comprises a support having thereon a. about 0.25 X 10 3 to 1 X 10 3 moles of HQ b. about 0.25 X 10 3 to 2 X 10 3 moles of silver as said silver salt of a thiazoline-2-thione compound, and c. about 0.02 X 10 3 to 0.12 X 10 3 moles of said silver halide.
Claim 30
Independent Claim
77 words
The method of preparing a photographic transparency employing an imagewise exposed photothermographic element comprising a transparent support having thereon a. a hydroquinone reducing agent, b. a silver salt selected from the group consisting of silver salts of 3-carboxymethyl-4-methyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-4-hydroxymethyl-4-thiazoline-2-thione, 3-(2-carboxyethyl)-benzothizoline-2-thione, 3-(2-carboxyethyl)-4-methyl-4-thiazoline-2-thione, and combinations thereof, c. a photosensitive silver halide in the absence of an image stabilizer or stabilizer precursor, comprising heating said photothermographic element to about 100*C. to about 250*C. for about 1 to about 60 seconds.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |