US5591982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation image storage panel and radiation image recording and reproducing method
Assignee: Fujifilm Holdings Corp
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Filing: 1995-03-29
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Granted: 1997-01-07
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Expires: 2015-03-29
Abstract
Abstract A radiation image storage panel preferably employable for a double-side reading system has a colored stimulate phosphor layer in which a ratio of weight of phosphor particles to binder is so adjusted as to vary in the direction of depth of the phosphor layer under the condition that a ratio of weight of phosphor particles to binder in a portion up to 1/5 of the depth of the layer from one surface of the layer is lower than the ratio of weight of phosphor particles to binder in the phospher layer, and the portion is colored more deeply than other portion of the phosphor layer.
Inventors
- 👤 Katsuhiro Kohda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:05
CPC Classifications
G; G21; G21K; G21K4/00; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2012; G21K2004/06; G21K2004/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A radiation image storage panel having a stimulable phosphor layer which comprises a binder and stimulable phosphor particles dispersed therein and is so colored as to absorb a portion of stimulating rays, wherein the coloring and a weight ratio of phosphor particles to binder vary in the phosphor layer in its depth direction under the conditions that a ratio of weight of phosphor particles to binder in a portion up to 1/5 of the depth of the layer from one surface of the layer is lower than the ratio of weight of phosphor particles to binder in the phosphor layer, and the portion is colored more deeply than other portion of the phosphor layer.
Claim 2
Dependent Claim
114 words
A radiation image storage panel having a stimulable phosphor layer which comprises a binder and stimulable phosphor particles dispersed therein and is so colored as to absorb a portion of stimulating rays, wherein the coloring and a weight ratio of phosphor particles to binder vary in the phosphor layer in its depth direction under the conditions that a ratio of weight of phosphor particles to binder in a portion up to 1/5 of the depth of the layer from one surface of the layer is lower than the ratio of weight of phosphor particles to binder in the phosphor layer, and the portion is colored more deeply than other portion of the phosphor layer.
Claim 3
Dependent Claim
53 words
The radiation image storage panel of claim 1, wherein a ratio of weight of phosphor particles to binder in a portion up to 1/5 of the depth of the layer from another surface of the layer also is lower than the ratio of weight of phosphor particles to binder in the phosphor layer.
Claim 4
Dependent Claim
28 words
The radiation image storage panel of claim 2, wherein the portion up to 1/5 of the depth of the layer from another surface of the layer is uncolored.
References Cited (Backward Citations)
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Cited
US4394581A
Cited
US4926047A
Cited
US4950559A
Cited
US4574102A
Cited
US4737641A
Cited
US4886967A
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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) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |