Patent US4680252A successfully refreshed from Google Patents.
US4680252A
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Silver halide light-sensitive photographic material for radiographic use
Assignee: Konica Minolta Inc
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Filing: 1985-07-19
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Granted: 1987-07-14
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Expires: 2005-07-19
Abstract
Abstract A silver halide light-sensitive photographic material for radiographic use comprising a transparent support and a silver halide emulsion layer on both sides thereof such that the blue light transmission density difference between the support and the silver halide layer is >/=0.35 and </=0.60.
Inventors
- 👤 Akio Suzuki
- 👤 Takeo Koitabashi
- 👤 Masatoshi Iwata
- 👤 Hisashi Yamaguchi
- 👤 Syoji Matsuzaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:01
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/16; Y; Y10; Y10S; Y10S430/00; Y10S430/167; Y10S430/168
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
A silver halide light-sensitive photographic material for radiographic use comprising a transparent support provided with a silver halide emulsion layer on both sides thereof, said support having a blue light transmission density D S and said material having a blue light transmission density D M , both before development, whereby 0.35≦D M -D S ≦0.60.
Claim 2
Dependent Claim
55 words
A silver halide light-sensitive photographic material for radiographic use comprising a transparent support provided with a silver halide emulsion layer on both sides thereof, said support having a blue light transmission density D S and said material having a blue light transmission density D M , both before development, whereby 0.35≦D M -D S ≦0.60.
Claim 3
Dependent Claim
11 words
The material of claim 1 wherein D M -D S ≦0.57.
Claim 4
Independent Claim
86 words
A method of using a silver halide light-sensitive photographic material for radiographic use comprising a transparent support provided with a silver halide emulsion layer on both sides thereof, said support having a blue light transmission density D S and said material having a blue light transmission density D M , both before development, whereby 0.35≦D M -D S ≦0.60, said method comprising exposing said material in conjunction with a fluorescent or phosphorescence substance to X-ray radiation and developing said material to obtain a a silver image.
Claim 5
Independent Claim
86 words
A method of using a silver halide light-sensitive photographic material for radiographic use comprising a transparent support provided with a silver halide emulsion layer on both sides thereof, said support having a blue light transmission density D S and said material having a blue light transmission density D M , both before development, whereby 0.35≦D M -D S ≦0.60, said method comprising exposing said material in conjunction with a fluorescent or phosphorescence substance to X-ray radiation and developing said material to obtain a a silver image.
Claim 6
Dependent Claim
33 words
A silver halide photographic light-sensitive material for radiographic use according to claim 1 wherein at least 80% by weight or by the number of said silver halide crystals have a regular crystal shape.
Claim 7
Dependent Claim
38 words
A silver halide light-sensitive photographic material for radiographic use according to claim 1 wherein at least 95% by weight or by the number of silver halide crystals have crystal sizes of ±40% within the average crystal size thereof.
Claim 8
Dependent Claim
33 words
A silver halide light-sensitive photographic material for radiographic use according to claim 1 wherein said silver halide crystals consist essentially of silver iodobromide having not greater than 10 molar % of silver iodide.
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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |