US4543480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation image recording system
Assignee: Fujifilm Holdings Corp
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Filing: 1982-10-12
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Granted: 1985-09-24
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Expires: 2002-10-12
Abstract
Abstract In a radiation image recording system in which a radiation image is once recorded on a stimulable phosphor sheet and then read out and reproduced into a visible radiation image, a high-power light source is built in the system to erase the noise due to the previously stored radiation image and the fog in the phosphor sheet by a single erasing operation immediately before the phosphor sheet is to be used to record thereon a radiation image. The light source has an exposure amount of at least 500,000 1x·sec. and is positioned between a phosphor sheet feeding section and a section where a radiation image is recorded on the sheet. The system is also provided with a mechanism for sending the phosphor sheet from the recording section to a sheet receiver or radiation image read out and reproducing apparatus.
Inventors
- 👤 Hisatoyo Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:37
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2012; G01T1/2016; G03C; G03C5/00; G03C5/16; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
158 words
A radiation image recording system comprising: (a) a container means for containing stimulable phosphor sheets or a continuous stimulable phosphor sheet used for radiation image recording and reproduction; (b) a stimulable phosphor sheet supplying means for supplying each said stimulable phosphor sheet or predetermined lengths of said continuous phosphor sheet from said container means to a recording position; (c) a stimulable phosphor sheet holding means for holding said stimulable phosphor sheet in said recording position; (d) a sheet delivery means for ejecting said stimulable phosphor sheet from said recording position after a radiation image is recorded on said stimulable phosphor sheet and for delivering it to a sheet receiving section or a radiation image information read out and reproducing system; (e) an irradiation means which is provided between said container means and said stimulable phosphor sheet holding means for erasing noise in said stimulable phosphor sheet, said irradiation means having an exposure amount of 500,000 1x·sec. or more.
Claim 2
Dependent Claim
158 words
A radiation image recording system comprising: (a) a container means for containing stimulable phosphor sheets or a continuous stimulable phosphor sheet used for radiation image recording and reproduction; (b) a stimulable phosphor sheet supplying means for supplying each said stimulable phosphor sheet or predetermined lengths of said continuous phosphor sheet from said container means to a recording position; (c) a stimulable phosphor sheet holding means for holding said stimulable phosphor sheet in said recording position; (d) a sheet delivery means for ejecting said stimulable phosphor sheet from said recording position after a radiation image is recorded on said stimulable phosphor sheet and for delivering it to a sheet receiving section or a radiation image information read out and reproducing system; (e) an irradiation means which is provided between said container means and said stimulable phosphor sheet holding means for erasing noise in said stimulable phosphor sheet, said irradiation means having an exposure amount of 500,000 1x·sec. or more.
Claim 3
Dependent Claim
24 words
A radiation image recording system as defined in claim 1 wherein said irradiation means has an exposure amount ranging from 3,000,000 to 9,000,000 1x·sec.
Claim 4
Dependent Claim
37 words
A radiation image recording system as defined in claim 1 wherein said stimulable phosphor sheet supplying means is provided with a guiding means for guiding said stimulable phosphor sheets from said container means to said supplying means.
Claim 5
Dependent Claim
41 words
A radiation image recording system as defined in claim 1 wherein the sheet carrying speed of said stimulable phosphor sheet supplying means is controlled with respect to the power of said irradiation means so as to secure a predetermined exposure amount.
Claim 6
Dependent Claim
37 words
A radiation image recording system as defined in claim 1 wherein said stimulable phosphor sheet supplying means is provided with a means for taking up said stimulable phosphor sheets one at a time from said container means.
Claim 7
Dependent Claim
42 words
A radiation image recording system as defined in claim 1 wherein said stimulable phosphor sheet supplying means is provided with a supporting means for guiding and supporting said stimulable phosphor sheets between said container means and said stimulable phosphor sheet holding means.
Claim 8
Dependent Claim
25 words
A radiation image recording system as defined in claim 6 wherein said supporting means consists of a pair of plates, one of which is transparent.
Claim 9
Dependent Claim
32 words
A radiation image recording system as defined in claim 7 wherein said transparent plate of said pair of plates is positioned on the side nearer to said irradiation means than the other.
Claim 10
Dependent Claim
39 words
A radiation image recording system as defined in claim 6 wherein said supporting means is provided with, at or in the vicinity of its one end, a stopper means for holding said stimulable phosphor sheets in a predetermined position.
Claim 11
Dependent Claim
37 words
A radiation image recording system as defined in claim 1 wherein said stimulable phosphor sheet is in the form of a continuous sheet and said sheet delivery means also serves as said stimulable phosphor sheet supplying means.
Claim 12
Dependent Claim
26 words
A radiation image recording system as defined in claim 10 wherein said sheet delivery means comprises a wind-up shaft for winding the continuous sheet around it.
Claim 13
Dependent Claim
44 words
A radiation image recording system as defined in claim 1 wherein said stimulable phosphor sheet is in the form of a continuous sheet and said stimulable phosphor sheet holding means also serves as said stimulable phosphor sheet supplying means and said sheet delivery means.
Claim 14
Dependent Claim
35 words
A radiation image recording system as defined in claim 1, wherein said container means comprises a section for releaseably holding a sheet feed body containing said stimulable phosphor sheets or said continuous stimulable phosphor sheet.
Claim 15
Dependent Claim
30 words
A radiation image recording system as defined in claim 1, wherein said container means comprises a sheet feeding section containing said stimulable phosphor sheets or said continuous stimulable phosphor sheet.
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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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |