US4910407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation image storage panel
Assignee: Fujifilm Holdings Corp
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Filing: 1988-07-29
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Granted: 1990-03-20
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Expires: 2008-07-29
Abstract
Abstract A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon, in which the void ratio of said stimulable phosphor-containing resin layer is reduced in comparison with an ordinarily prepared stimulable phosphor-containing resin layer having the same binder-phosphor ratio and formed by a coating procedure conducted under an atmospheric pressure. The void ratio is not more than 85% of the void ratio of the ordinarily prepared stimulable phosphor-containing resin layer in which a resinous binder and a stimulable phosphor are contained in a weight ratio of 1:1 to 1:25, the ratio of 1:25 being exclusive, and the void ratio is not more than 90% for a stimulable phosphor-containing resin layer in which a resinous binder and a stimulable phosphor are contained in a weight ratio of 1:25 to 1:100.
Inventors
- 👤 Satoshi Arakawa
- 👤 Junji Miyahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:49
CPC Classifications
G; G21; G21K; G21K4/00; G03; G03C; G03C5/00; G03C5/16; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
122 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:1 to 1:25 which is produced by the steps of: forming a stimulable phosphor-containing resin layer on the support; and compressing the layer formed on the support to reduce voids in said layer to have a void ratio of not more than 85% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with a stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer.
Claim 2
Dependent Claim
122 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:1 to 1:25 which is produced by the steps of: forming a stimulable phosphor-containing resin layer on the support; and compressing the layer formed on the support to reduce voids in said layer to have a void ratio of not more than 85% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with a stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer.
Claim 3
Dependent Claim
25 words
The radiation image storage panel as claimed in claim 1, in which said stimulable phosphor is a divalent europium activated alkaline earth metal fluorohalide phosphor.
Claim 4
Dependent Claim
23 words
The radiation image storage panel as claimed in claim 1, in which said stimulable phosphor is a divalent europium activated barium fluorobromide phosphor.
Claim 5
Dependent Claim
45 words
The radiation image storage panel as claimed in claim 1, in which the step for compressing is performed under a pressure of 50-1500 kg./cm 2 , at a temperature of not lower than room temperature, but not higher than the melting point of the binder.
Claim 6
Dependent Claim
28 words
The radiation image storage panel as claimed in claim 1, in which said step for compressing is performed by means of a calender roll or a hot press.
Claim 7
Dependent Claim
138 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:1 to 1:25 which is produced by the steps of: forming a stimulable phosphor-containing resin layer on a false support; Compressing the layer formed on the false support to reduce voids in said layer to have a void ratio of not more than 85% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer; and transferring the compressed layer onto a geniune support to produce the radiation image storage panel.
Claim 8
Dependent Claim
138 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:1 to 1:25 which is produced by the steps of: forming a stimulable phosphor-containing resin layer on a false support; Compressing the layer formed on the false support to reduce voids in said layer to have a void ratio of not more than 85% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer; and transferring the compressed layer onto a geniune support to produce the radiation image storage panel.
Claim 9
Dependent Claim
25 words
The radiation image storage panel as claimed in claim 6 in which said stimulable phosphor is a divalent europium activated alkaline earth metal fluorohalide phosphor.
Claim 10
Dependent Claim
23 words
The radiation image storage panel as claimed in claim 6, in which said stimulable phosphor is a divalent europium activated barium fluorobromide phosphor.
Claim 11
Dependent Claim
46 words
The radiation image storage panel as claimed in claim 6, in which the step for compressing is performed under a pressure of 50-1500 kg./cm 2 , and at a temperature of not lower than room temperature, but not higher than the melting point of the binder.
Claim 12
Dependent Claim
28 words
The radiation image storage panel as claimed in claim 6, in which the step for compressing is performed by means of a calender roll or a hot press.
Claim 13
Dependent Claim
121 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:25 to 1:100, which is produced by the steps of: forming a stimulable phosphor-containing resin layer on the support; and compressing the layer formed on the support to reduce voids in said layer to have a void ratio of not more than 90% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer.
Claim 14
Dependent Claim
121 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:25 to 1:100, which is produced by the steps of: forming a stimulable phosphor-containing resin layer on the support; and compressing the layer formed on the support to reduce voids in said layer to have a void ratio of not more than 90% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer.
Claim 15
Dependent Claim
25 words
The radiation image storage panel as claimed in claim 11, in which said stimulable phosphor is a divalent europium activated alkaline earth metal fluorohalide phosphor.
Claim 16
Dependent Claim
23 words
The radiation image storage panel as claimed in claim 11, in which said stimulable phosphor is a divalent europium activated barium fluorobromide phosphor.
Claim 17
Dependent Claim
46 words
The radiation image storage panel as claimed in claim 11, in which the step for compressing is performed under a pressure of 50-1500 kg./cm 2 , and at a temperature of not lower than room temperature, but not higher than the melting point of the binder.
Claim 18
Dependent Claim
28 words
The radiation image storage panel as claimed in claim 11, in which the step for compressing is performed by means of a calender roll or a hot press.
Claim 19
Dependent Claim
139 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:25 to 1:100, which is produced by the steps of: forming a stimulable phosphor-containing resin layer on a false support; compressing the layer formed on the false support to reduce voids in said layer to have a void ratio of not more than 90% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with a stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer; and transferring the compressed layer onto a geniune support to produce the radiation image storage panel.
Claim 20
Dependent Claim
139 words
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon which contains a resinous binder and a stimulable phosphor in a weight ratio of binder to phosphor of 1:25 to 1:100, which is produced by the steps of: forming a stimulable phosphor-containing resin layer on a false support; compressing the layer formed on the false support to reduce voids in said layer to have a void ratio of not more than 90% of a void ratio of an uncompressed layer of stimulable phosphor-containing resin so that an image obtained from the compressed stimulable phosphor-containing resin layer in response to stimulation with a stimulating ray is sharper than an image obtained from the uncompressed stimulable phosphor-containing resin layer; and transferring the compressed layer onto a geniune support to produce the radiation image storage panel.
Claim 21
Dependent Claim
25 words
The radiation image storage panel as claimed in claim 16, in which said stimulable phosphor is a divalent europium activated alkaline earth metal fluorohalide phosphor.
Claim 22
Dependent Claim
23 words
The radiation image storage panel as claimed in claim 16, in which said stimulable phosphor is a divalent europium activated barium fluorobromide phosphor.
Claim 23
Dependent Claim
46 words
The radiation image storage panel as claimed in claim 16, in which the step for compressing is performed under a pressure of 50-1500 kg./cm 2 , and at a temperature of not lower than room temperature, but not higher than the melting point of the binder.
Claim 24
Dependent Claim
28 words
The radiation image storage panel as claimed in claim 16, in which the step for compressing is performed by means of a calender roll or a hot press.
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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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |