Patent US699301A successfully refreshed from Google Patents.
US4603253A
Expired / Lapsed
US
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Radiation image converting panel and an apparatus for reading out a radiation image from the same
Assignee: Toshiba Corp
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Filing: 1984-10-18
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Granted: 1986-07-29
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Expires: 2004-10-18
Abstract
Abstract A radiation image-converting panel has a stimulable phosphor layer formed on its base. On this stimulable phosphor layer there is formed a transparent protective layer, on which an auxiliary protective layer is pasted by a adhesive so that it can be peeled from the protective layer. In an apparatus for reading out a radiation image from the radiation image-converting panel, an adsorptive cup adsorbed to the base is moved in a subscanning direction and, at the same time, an adsorptive cup adsorbed to the auxiliary protective layer is rotated. Thus, the auxiliary protective layer can be peeled off from the protective layer. While the auxiliary protective layer is peeled, laser beams are caused to scan the stimulable phosphor layer through the protective layer. The phosphorescence emitted by this scanning is detected by a photodetector through a condensing portion.
Inventors
- 👤 Kouzou Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:01
CPC Classifications
G; G21; G21K; G21K4/00; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2012
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
A radiation image-converting panel for storing therein a radiation image obtained by transmission of radiation through a patient and, upon irradiation of laser beams thereon, converting it into phosphorescence, comprising: a base; a stimulable phosphor layer formed on the base, said stimulable phosphor layer being capable of absorbing the energy of radiation and releasing said energy as phosphorescence upon irradiation of laser beams thereon; a protective layer formed on the stimulable phosphor layer and consisting of material capable of transmitting light therethrough; and an auxiliary protective layer disposed on the protective layer and pasted thereon in such a manner that it is peelable.
Claim 2
Dependent Claim
103 words
A radiation image-converting panel for storing therein a radiation image obtained by transmission of radiation through a patient and, upon irradiation of laser beams thereon, converting it into phosphorescence, comprising: a base; a stimulable phosphor layer formed on the base, said stimulable phosphor layer being capable of absorbing the energy of radiation and releasing said energy as phosphorescence upon irradiation of laser beams thereon; a protective layer formed on the stimulable phosphor layer and consisting of material capable of transmitting light therethrough; and an auxiliary protective layer disposed on the protective layer and pasted thereon in such a manner that it is peelable.
Claim 3
Dependent Claim
28 words
A radiation image-converting panel according to claim 1, wherein the radiation irradiated onto the stimulable phosphor layer is X-ray radiation which emits phosphorescence when irradiated with laser beams.
Claim 4
Independent Claim
174 words
An apparatus for reading out a radiation image comprising: a radiation image-converting panel which includes a storage layer capable of absorbing the energy of radiation and releasing said energy as phosphorescence when irradiated with laser beams and an auxiliary protective layer disposed on the storage layer and pasted thereon in such a manner that it is peelable; a peeling and pasting means for peeling the auxiliary protective layer from the storage layer to expose the latter and also for superposing the auxiliary protective layer onto the storage layer to paste the former onto the latter; and a radiation-image reading-out means for reading out a radiation image from the radiation image-converting panel irradiated with radiation, said radiation-image reading-out means including a laser beam irradiating means for irradiating laser beams onto the storage layer from which the auxiliary protective layer has been peeled off by the peeling and pasting means, and a detecting means for detecting the phosphorescence emitted from the storage layer upon irradiation of laser beams and converting the phosphorescence into an electric signal.
Claim 5
Independent Claim
174 words
An apparatus for reading out a radiation image comprising: a radiation image-converting panel which includes a storage layer capable of absorbing the energy of radiation and releasing said energy as phosphorescence when irradiated with laser beams and an auxiliary protective layer disposed on the storage layer and pasted thereon in such a manner that it is peelable; a peeling and pasting means for peeling the auxiliary protective layer from the storage layer to expose the latter and also for superposing the auxiliary protective layer onto the storage layer to paste the former onto the latter; and a radiation-image reading-out means for reading out a radiation image from the radiation image-converting panel irradiated with radiation, said radiation-image reading-out means including a laser beam irradiating means for irradiating laser beams onto the storage layer from which the auxiliary protective layer has been peeled off by the peeling and pasting means, and a detecting means for detecting the phosphorescence emitted from the storage layer upon irradiation of laser beams and converting the phosphorescence into an electric signal.
Claim 6
Dependent Claim
57 words
An apparatus according to claim 3, wherein said peeling and pasting means has a peeling adsorptive cup which is capable of adsorbing the auxiliary protective layer and a rotating mechanism for rotating the peeling adsorptive cup, whereby the auxiliary protective layer is peeled by rotation of the peeling adsorptive cup having the auxiliary protective layer adsorbed thereto.
Claim 7
Dependent Claim
84 words
An apparatus according to claim 4, wherein said peeling and pasting means has a moving adsorptive cup which is capable of adsorbing the storage layer, and a moving mechanism which is used to move the moving adsorptive cup in parallel with the surface of the radiation-image converting panel, whereby the auxiliary protective layer is peeled when the peeling adsorptive cup having the auxiliary protective layer adsorbed thereto is rotated simultaneously with the movement of the moving adsorptive cup having the storage layer adsorbed thereto.
Claim 8
Dependent Claim
65 words
An apparatus according to claim 5, wherein said laser beam irradiating means has a laser beam source which generates laser beams, and a scanning means for causing said laser beams to scan the panel in the main scanning direction; and said moving mechanism causes the radiation image converting panel to move in a subscanning direction which intersects the main scanning direction at right angles thereto.
Claim 9
Dependent Claim
31 words
An apparatus according to claim 6, wherein said rotating mechanism has a rotatable rotary member which is mounted with the peeling adsorptive cup, and a motor for rotating the rotary member.
Claim 10
Dependent Claim
46 words
An apparatus according to claim 7, wherein said moving mechanism has a movable member mounted with the moving adsorptive cup, a guiding means for guiding the movable member so that it can be moved in the subscanning direction, and a motor for moving the movable member.
Claim 11
Dependent Claim
38 words
An apparatus according to claim 8, wherein said detecting means has a photodetector for converting light into electric signals, and a condensing portion for collecting the phosphorescence emitted from the storage layer and guiding it to the photodetector.
Claim 12
Dependent Claim
41 words
An apparatus according to claim 9, wherein the light-incident end of the condensing portion is extended in the main scanning direction so as to collect the phosphorescence emitted from that portion of the storage layer located on the main scanning line.
Claim 13
Dependent Claim
78 words
An apparatus according to claim 10, wherein the storage layer of the radiation image-converting panel includes a base, a stimulable phosphor layer formed on the base, said stimulable phosphor layer being capable of absorbing the energy of radiation and releasing said energy as phosphorescence when irradiate with laser beams, and a protective layer formed on the stimulable phosphor layer and consisting of material capable of transmitting light therethrough, said auxiliary protective layer being disposed on said protective layer.
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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |