US4386144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of multicolor optical filters
Assignee: Fujifilm Holdings Corp
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Filing: 1981-08-24
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Granted: 1983-05-31
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Expires: 2001-08-24
Abstract
Abstract A process for producing a multicolor optical filter which comprises the steps of (1) exposing a light-sensitive material and (2) developing the exposed light-sensitive material, the process employing a specific light-sensitive material including a silver halide emulsion layer (L1) and a silver halide emulsion layer (L2), each layer containing therein a specific compound or dye. Such a multicolor optical filter is useful in color pick-up tubes and color solid state pick-up devices.
Inventors
- 👤 Toshiaki Aono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:45
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/04; G03C7/06; G03C7/10; G03C7/12; G02; G02B; G02B5/00; G02B5/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
335 words
A process for producing a multicolor optical filter, comprising the steps of: (1) exposing a light-sensitive material including: (M-a) a silver halide emulsion layer (L1) containing: a compound (1b) capable of forming a dye having any one of the subtractive process three principal colors in proportion to the amount of exposure by development processing, or a dye (1c) having any one of the subtractive process three principal colors, and capable of losing the color in proportion to the amount of exposure by development processing; and (M-b) a silver halide emulsion layer (L2) containing: a silver halide emulsion (2a) having a sensitivity sufficient to reach a state at which further development does not proceed when it is exposed to an amount of exposure at which no imagewise development occurs in the emulsion layer (L1); and when compound (1b) is contained in layer (L1), a compound (2b) capable of forming a dye which has a color of the subtractive process three principal colors other than the color of the dye resulting from the compound (1b) contained in emulsion layer (L1) by development processing; or, when compound (1c) is contained in layer (L1), a dye (2c) having a color of the subtractive process three principal colors other than that of the dye (1c) contained in the emulsion layer (L1), and capable of losing the color in proportion to the amount of exposure by development processing; wherein said light-sensitive material has a surface divided into a number of areas, and said exposure is performed such that (a) some of the areas are unexposed, or are exposed only to an extent that no imagewise development occurs in the emulsion layer (L2); (b) some of the areas are exposed to the extent that further development does not proceed in the emulsion layer (L2), but no imagewise development occurs in the emulsion layer (L1); and (c) the remaining areas are exposed to the extent that further development does not proceed in the emulsion layer (L1); and (2) developing the exposed light-sensitive material.
Claim 2
Dependent Claim
335 words
A process for producing a multicolor optical filter, comprising the steps of: (1) exposing a light-sensitive material including: (M-a) a silver halide emulsion layer (L1) containing: a compound (1b) capable of forming a dye having any one of the subtractive process three principal colors in proportion to the amount of exposure by development processing, or a dye (1c) having any one of the subtractive process three principal colors, and capable of losing the color in proportion to the amount of exposure by development processing; and (M-b) a silver halide emulsion layer (L2) containing: a silver halide emulsion (2a) having a sensitivity sufficient to reach a state at which further development does not proceed when it is exposed to an amount of exposure at which no imagewise development occurs in the emulsion layer (L1); and when compound (1b) is contained in layer (L1), a compound (2b) capable of forming a dye which has a color of the subtractive process three principal colors other than the color of the dye resulting from the compound (1b) contained in emulsion layer (L1) by development processing; or, when compound (1c) is contained in layer (L1), a dye (2c) having a color of the subtractive process three principal colors other than that of the dye (1c) contained in the emulsion layer (L1), and capable of losing the color in proportion to the amount of exposure by development processing; wherein said light-sensitive material has a surface divided into a number of areas, and said exposure is performed such that (a) some of the areas are unexposed, or are exposed only to an extent that no imagewise development occurs in the emulsion layer (L2); (b) some of the areas are exposed to the extent that further development does not proceed in the emulsion layer (L2), but no imagewise development occurs in the emulsion layer (L1); and (c) the remaining areas are exposed to the extent that further development does not proceed in the emulsion layer (L1); and (2) developing the exposed light-sensitive material.
Claim 3
Dependent Claim
45 words
A process as in claim 1, wherein silver halide emulsion layer (L1) contains a compound (1b), silver halide emulsion layer (L2) contains a compound (2b), and dyes are formed in said emulsion layers by development processing comprising a negative-positive process or a color reversal process.
Claim 4
Dependent Claim
38 words
A process as in claim 1, wherein silver halide emulsion layer (L1) contains a dye (1c), silver halide emulsion layer (L2) contains a dye (2c), and said development processing is carried out by a silver dye bleach process.
Claim 5
Dependent Claim
31 words
A process as in claim 1, 2, or 3, wherein the emulsion layer (L1) is coated directly on the support, and the emulsion layer (L2) is coated on emulsion layer (L1).
Claim 6
Dependent Claim
335 words
A multicolor optical filter made by a process comprising the steps of: (1) exposing a light-sensitive material including: (M-a) a silver halide emulsion layer (L1) containing: a compound (1b) capable of forming a dye having any one of the subtractive process three principal colors in proportion to the amount of exposure by development processing, or a dye (1c) having any one of the subtractive process three principal colors, and capable of losing the color in proportion to the amount of exposure by development processing; and (M-b) a silver halide emulsion layer (L2) containing: a silver halide emulsion (2a) having a sensitivity sufficient to reach a state at which further development does not proceed when it is exposed to an amount of exposure at which no imagewise development occurs in the emulsion layer (L1); and when compound (1b) is contained in layer (L1), a compound (2b) capable of forming a dye which has a color of the subtractive process three principal colors other than the color of the dye resulting from the compound (1b) contained in emulsion layer (L1) by development processing; or, when compound (1c) is contained in layer (L1), a dye (2c) having a color of the subtractive process three principal colors other than that of the dye (1c) contained in the emulsion layer (L1), and capable of losing the color in proportion to the amount of exposure by development processing; wherein said light-sensitive material has a surface divided into a number of areas and said exposure is performed such that (a) some of the areas are unexposed, or are exposed only to an extent that no imagewise development occurs in the emulsion layer (L2); (b) some of the areas are exposed to the extent that further development does not proceed in the emulsion layer (L2), but no imagewise development occurs in the emulsion layer (L1); and (c) the remaining areas are exposed to the extent that further development does not proceed in the emulsion layer (L1); and (2) developing the exposed light-sensitive material.
Claim 7
Dependent Claim
335 words
A multicolor optical filter made by a process comprising the steps of: (1) exposing a light-sensitive material including: (M-a) a silver halide emulsion layer (L1) containing: a compound (1b) capable of forming a dye having any one of the subtractive process three principal colors in proportion to the amount of exposure by development processing, or a dye (1c) having any one of the subtractive process three principal colors, and capable of losing the color in proportion to the amount of exposure by development processing; and (M-b) a silver halide emulsion layer (L2) containing: a silver halide emulsion (2a) having a sensitivity sufficient to reach a state at which further development does not proceed when it is exposed to an amount of exposure at which no imagewise development occurs in the emulsion layer (L1); and when compound (1b) is contained in layer (L1), a compound (2b) capable of forming a dye which has a color of the subtractive process three principal colors other than the color of the dye resulting from the compound (1b) contained in emulsion layer (L1) by development processing; or, when compound (1c) is contained in layer (L1), a dye (2c) having a color of the subtractive process three principal colors other than that of the dye (1c) contained in the emulsion layer (L1), and capable of losing the color in proportion to the amount of exposure by development processing; wherein said light-sensitive material has a surface divided into a number of areas and said exposure is performed such that (a) some of the areas are unexposed, or are exposed only to an extent that no imagewise development occurs in the emulsion layer (L2); (b) some of the areas are exposed to the extent that further development does not proceed in the emulsion layer (L2), but no imagewise development occurs in the emulsion layer (L1); and (c) the remaining areas are exposed to the extent that further development does not proceed in the emulsion layer (L1); and (2) developing the exposed light-sensitive material.
Claim 8
Dependent Claim
47 words
A multicolor optical filter as in claim 5, wherein silver halide emulsion layer (L1) contains a compound (1b), silver halide emulsion layer (L2) contains a compound (2b), and dyes are formed in said emulsion layers by development processing comprising a negative-positive process or a color reversal process.
Claim 9
Dependent Claim
40 words
A multicolor optical filter as in claim 5, wherein silver halide emulsion layer (L1) contains a dye (1c), silver halide emulsion layer (L2) contains a dye (2c), and said development processing is carried out by a silver dye bleach process.
Claim 10
Dependent Claim
33 words
A multicolor optical filter as in claim 5, 6, or 7, wherein the emulsion layer (L1) is coated directly on the support, and the emulsion layer (L2) is coated on emulsion layer (L1).
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) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |