Patent US4574102A successfully refreshed from Google Patents.
US4574102A
Expired / Lapsed
US
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Radiation image storage panel
Assignee: Fujifilm Holdings Corp
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Filing: 1984-06-04
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Granted: 1986-03-04
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Expires: 2004-06-04
Abstract
Abstract A radiation image storage panel comprising a support, a phosphor layer provided on the support which comprises a binder and a stimulable phosphor dispersed therein, and a protective film provided on the phosphor layer, characterized in that a mixing ratio of the binder to the stimulable phosphor in said phosphor layer so varies as to show a minimum value within a region of depth of from 1/5 to 4/5 of the thickness of the phosphor layer, the depth being expressed in terms of relative distance from the protective film-side surface.
Inventors
- 👤 Satoshi Arakawa
- 👤 Terumi Matsuda
- 👤 Akio Ishizuka
- 👤 Yoshihiko Shibahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:00
CPC Classifications
G; G21; G21K; G21K4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A radiation image storage panel comprising a support, a phosphor layer provided on the support which comprises a binder and a stimulable phosphor dispersed therein, and a protective film provided on the phosphor layer, characterized in that a mixing ratio of the binder to the stimulable phosphor in said phosphor layer so varies as to show a minimum value within a region of depth of from 1/5 to 4/5 of the thickness of the phosphor layer, the depth being expressed in terms of relative distance from the protective film-side surface.
Claim 2
Dependent Claim
90 words
A radiation image storage panel comprising a support, a phosphor layer provided on the support which comprises a binder and a stimulable phosphor dispersed therein, and a protective film provided on the phosphor layer, characterized in that a mixing ratio of the binder to the stimulable phosphor in said phosphor layer so varies as to show a minimum value within a region of depth of from 1/5 to 4/5 of the thickness of the phosphor layer, the depth being expressed in terms of relative distance from the protective film-side surface.
Claim 3
Dependent Claim
75 words
The radiation image storage panel as claimed in claim 1, in which said minimum value of the mixing ratio of the binder to the stimulable phosphor in the phosphor layer is within the range of from 50 to 90% of the mean mixing ratio in a region of depth of from 0 to 1/10 of the thickness of the phosphor layer, the depth being expressed in terms of relative distance from the protective film-side surface.
Claim 4
Dependent Claim
87 words
The radiation image storage panel as claimed in claim 1, in which the mean mixing ratio of the binder to the stimulable phosphor in a region of depth of from 0 to 1/10 of the thickness of the phosphor layer, said depth being expressed in terms of relative distance from the support-side surface, is larger than the mean mixing ratio in the region of depth of from 0 to 1/10 of the same, said depth being expressed in terms of relative distance from the protective film-side surface.
Claim 5
Dependent Claim
34 words
The radiation image storage panel as claimed in any one of claims 1 through 3, in which the thickness of said phosphor layer is within the range of from 50 μm to 1 mm.
Claim 6
Dependent Claim
46 words
The radiation image storage panel as claimed in any one of claims 1 through 3, in which said minimum value of the mixing ratio of the binder to the stimulable phosphor in the phosphor layer is within the range of from 1:5 to 1:100, by weight.
Claim 7
Dependent Claim
41 words
The radiation image storage panel as claimed in claim 5, in which said minimum value of the mixing ratio of the binder to the stimulable phosphor in the phosphor layer is within the range of from 1:10 to 1:50, by weight.
References Cited (Backward Citations)
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US4239968A
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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) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |