US4839268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color reversal photosensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1987-12-22
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Granted: 1989-06-13
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Expires: 2007-12-22
Abstract
Abstract A silver halide color reversal pohotosensitive material is disclosed, comprising a plurality of silver halide emulsion layers on a substrate, wherein 50% or more of the total projected area of silver halide grains contained in at least one of said silver halide emulsion layers is occupied by tabular silver iodobromide grains having an average thickness of 0.5 micron or less, an average diameter of 0.5 micron or more, an average aspect ratio of at least 5/1, and a silver iodide content of 4.0 mol % or less, and said tabular silver iodobromide grains are negative-type silver halide grains forming a latent image mainly inside the grains.
Inventors
- 👤 Shinsuki Bando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:57
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/50; G03C1/00; G03C1/005; G03C1/0051
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
104 words
A silver halide color reversal photosensitive material comprising a plurality of silver halide emulsion layers on a substrate, wherein 50% or more of the total projected area of silver halide grains contained in at least one of said silver halide emulsion layers is occupied by tabular silver iodobromide grains having an average thickness of 0.5 micron or less, an average diameter of 0.5 micron or more, an average aspect ratio of at least 5/1, and a silver iodide content of 4.0 mol % or less, and said tabular silver iodobromide grains are negative-type silver halide grains forming a latent image mainly inside the grains.
Claim 2
Dependent Claim
104 words
A silver halide color reversal photosensitive material comprising a plurality of silver halide emulsion layers on a substrate, wherein 50% or more of the total projected area of silver halide grains contained in at least one of said silver halide emulsion layers is occupied by tabular silver iodobromide grains having an average thickness of 0.5 micron or less, an average diameter of 0.5 micron or more, an average aspect ratio of at least 5/1, and a silver iodide content of 4.0 mol % or less, and said tabular silver iodobromide grains are negative-type silver halide grains forming a latent image mainly inside the grains.
Claim 3
Dependent Claim
35 words
A silver halide color reversal photosensitive material as in claim 1, wherein the diameter of the grains is from 0.5 to 3 microns, and the thickness of the grains is from 0.05 to 0.4 microns.
Claim 4
Dependent Claim
23 words
A silver halide color reversal photosensitive material as in claim 2, wherein the thickness of the grains is from 0.05 to 0.3 microns.
Claim 5
Dependent Claim
24 words
A silver halide color reversal photosensitive material as in claim 1, wherein the average aspect ratio of the grains is from 5/1 to 8/1.
Claim 6
Dependent Claim
24 words
A silver halide color reversal photosensitive material as in claim 2, wherein the average aspect ratio of the grains is from 5/1 to 8/1.
Claim 7
Dependent Claim
24 words
A silver halide color reversal photosensitive material as in claim 3, wherein the average aspect ratio of the grains is from 5/1 to 8/1.
Claim 8
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 1, wherein said tabular grains occupy 70% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 9
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 2, wherein said tabular grains occupy 70% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 10
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 3, wherein said tabular grains occupy 70% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 11
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 4, wherein said tabular grains occupy 70% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 12
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 5, wherein said tabular grains occupy 70% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 13
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 6, wherein said tabular grains occupy 70% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 14
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 1, wherein said tabular grains occupy 90% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 15
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 2, wherein said tabular grains occupy 90% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 16
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 3, wherein said tabular grains occupy 90% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 17
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 4, wherein said tabular grains occupy 90% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 18
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 5, wherein said tabular grains occupy 90% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 19
Dependent Claim
39 words
A silver halide color reversal photosensitive material as in claim 6, wherein said tabular grains occupy 90% or more of the total projected area of silver halide grains contained in a least one of said silver halide emulsion layers.
Claim 20
Dependent Claim
154 words
A silver halide color reversal photosensitive material as in claim 1, wherein said latent image mainly inside the grains is such that when developed at a pH of 9.6 with a developing solution B, C, D, or E, as defined below, the sensitivity obtained with at least one of developing solutions B, C, D, or E is higher than the sensitivity obtained when developed with developing solution A: ______________________________________
Developing Solution
Developing Solutions
Compounds A B C D E
______________________________________
N--methyl-p-amino-
2.5 g 2.5 g 2.5 g 2.5 g 2.5 g
phenol sulfate
Sodium ascorbate
10.0 g 10.0 g 10.0 g
10.0 g
10.0 g
Potassium metaborate
35.0 g 35.0 g 35.0 g
35.0 g
35.0 g
Potassium bromide
1.0 g 1.0 g 1.0 g 1.0 g 1.0 g
Sodium thiosulfate
none 1.0 g 2.0 g 5.0 g 10.0 g
Water to make
1.0 l 1.0 l 1.0 l 1.0 l 1.0 l
______________________________________
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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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |