US4864134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image read-out apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1988-01-06
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Granted: 1989-09-05
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Expires: 2008-01-06
Abstract
Abstract An image read-out apparatus includes a main scanning device for scanning a sheet carrying an image recorded thereon with a light beam in a main scanning direction and obtaining light carrying the image information from the sheet, a sub-scanning device for moving the sheet with respect to the light beam in a sub-scanning direction approximately normal to the main scanning direction, and a light detector for detecting the light obtained from the sheet. The light detector comprises a long photomultipler having a light receiving face extending along the main scanning line and positioned close to the sheet.
Inventors
- 👤 Yuichi Hosoi
- 👤 Satoshi Arakawa
- 👤 Hideo Ishizaka
- 👤 Terumi Matsuda
- 👤 Kenji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2012; G01T1/2014; H; H01; H01J; H01J43/00; H01J43/04; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/0281
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
125 words
An image read-out apparatus including a main scanning means for scanning a sheet carrying an image recorded thereon with a light beam in a main scanning direction and obtaining light carrying the image information from the sheet, a sub-scanning means for moving the sheet with respect to the light beam in a sub-scanning direction approximately normal to the main scanning direction, and a light detection means for detecting the light obtained from the sheet, wherein said light detection means comprises a photomultiplier elongated along said main scanning direction having a light receiving face extending along the main scanning line and positioned substantially adjacent to said sheet; and wherein said light receiving face of said photomultiplier substantially covers the entire length of the main scanning line.
Claim 2
Dependent Claim
125 words
An image read-out apparatus including a main scanning means for scanning a sheet carrying an image recorded thereon with a light beam in a main scanning direction and obtaining light carrying the image information from the sheet, a sub-scanning means for moving the sheet with respect to the light beam in a sub-scanning direction approximately normal to the main scanning direction, and a light detection means for detecting the light obtained from the sheet, wherein said light detection means comprises a photomultiplier elongated along said main scanning direction having a light receiving face extending along the main scanning line and positioned substantially adjacent to said sheet; and wherein said light receiving face of said photomultiplier substantially covers the entire length of the main scanning line.
Claim 3
Dependent Claim
15 words
An apparatus as defined in claim 1 wherein said photomultiplier is a box type photomultiplier.
Claim 4
Dependent Claim
16 words
An apparatus as defined in claim 1 wherein said photomultiplier is a Venetian blind type photomultiplier.
Claim 5
Dependent Claim
17 words
An apparatus as defined in claim 1 wherein said photomultiplier is covered by a light shielding case.
Claim 6
Dependent Claim
57 words
An apparatus as defined in claim 1 wherein said sheet is a stimulable phosphor sheet carrying a radiation image stored thereon, said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and said light detection means detects the light emitted by said stimulable phosphor sheet.
Claim 7
Dependent Claim
95 words
An apparatus as defined in claim 5 wherein said light detection means is provided with a filter for selectively transmitting light having a wavelength within the wavelength range of the light emitted by said stimulable phosphor sheet and/or a light guide member for guiding the light, which is emitted by said stimulable phosphor sheet and enters from a light input face of said light guide member positioned to face said stimulable phosphor sheet, to said light receiving face of said photomultiplier, said filter and/or said light guide member being positioned on said light receiving face.
Claim 8
Dependent Claim
17 words
An apparatus as defined in claim 5 wherein said light guide member is a light guide liquid
Claim 9
Dependent Claim
16 words
An apparatus as defined in claim 7 wherein said light guide liquid is an oily liquid.
Claim 10
Dependent Claim
23 words
An apparatus as defined in claim 8 wherein said oily liquid is selected from the group consisting of silicone oil and liquid paraffin.
Claim 11
Dependent Claim
42 words
An apparatus as defined in claim 1 wherein said light detection means further comprises an optical element adhered to said light receiving face of said photomultiplier by a light-permeable adhesive, and side faces of said adhesive are covered by a moisture-proof material.
Claim 12
Dependent Claim
57 words
An apparatus as defined in claim 10 wherein said sheet is a stimulable phosphor sheet carrying a radiation image stored thereon, said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and said light detection means detects the light emitted by said stimulable phosphor sheet.
Claim 13
Dependent Claim
25 words
An apparatus as defined in claim 11 wherein said optical element is a filter for selectively transmitting the light emitted by said stimulable phosphor sheet.
Claim 14
Dependent Claim
72 words
An apparatus as defined in claim 5 wherein said light detection means further comprises a filter for selectively transmitting the light emitted by said stimulable phosphor sheet, said filter is formed integrally with said photomultiplier and disposed between said light receiving face and said scanning line, and regions from side faces of said filter to side faces of said photomultiplier adjacent to said light receiving face are covered by a light-shielding material.
Claim 15
Dependent Claim
15 words
An apparatus as defined in claim 13 wherein said light-shielding material is a black paint.
Claim 16
Dependent Claim
44 words
An apparatus as defined in claim 1 wherein said light detection means further comprises an optical reflection element extending along said main scanning line in the vicinity thereof for reflecting the light obtained from said sheet towards said light receiving face of said photomultiplier.
Claim 17
Dependent Claim
57 words
An apparatus as defined in claim 15 wherein said sheet is a stimulable phosphor sheet carrying a radiation image stored thereon, said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and said light detection means detects the light emitted by said stimulable phosphor sheet.
Claim 18
Dependent Claim
95 words
An apparatus as defined in claim 16 wherein said light detection means is provided with a filter for selectively transmitting light having a wavelength within the wavelength range of the light emitted by said stimulable phosphor sheet and/or a light guide member for guiding the light, which is emitted by said stimulable phosphor sheet and enters from a light input face of said light guide member positioned to face said stimulable phosphor sheet, to said light receiving face of said photomultiplier, said filter and/or said light guide member being positioned on said light receiving face.
Claim 19
Dependent Claim
74 words
An apparatus as defined in claim 1 wherein said light detection means further comprises an integrating cylinder provided with a slit extending in said main scanning direction for allowing passage of said light beam therethrough, and an aperture opening above the section including said main scanning line on said sheet, said integrating cylinder being positioned so that said light receiving face of said photomultiplier is positioned at the inner surface of said integrating cylinder.
Claim 20
Dependent Claim
57 words
An apparatus as defined in claim 18 wherein said sheet is a stimulable phosphor sheet carrying a radiation image stored thereon, said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and said light detection means detects the light emitted by said stimulable phosphor sheet.
Claim 21
Dependent Claim
95 words
An apparatus as defined in claim 19 wherein said light detection means is provided with a filter for selectively transmitting light having a wavelength within the wavelength range of the light emitted by said stimulable phosphor sheet and/or a light guide member for guiding the light, which is emitted by said stimulable phosphor sheet and enters from a light input face of said light guide member positioned to face said stimulable phosphor sheet, to said light receiving face of said photomultiplier, said filter and/or said light guide member being positioned on said light receiving face.
Claim 22
Dependent Claim
79 words
An apparatus as defined in claim 1 wherein said light receiving face of said photomultiplier extends in parallel with said sheet above and along said main scanning line, and said light detection means further comprises an optical reflection element for reflecting said light beam, which enters between said photomultiplier and said sheet and impinges upon said optical reflection element, under said light receiving face of said photomultiplier and making said light beam impinge upon said sheet approximately normal thereto.
Claim 23
Dependent Claim
74 words
An apparatus as defined in claim 21 wherein said light detection means further comprises an integrating cylinder provided with a slit extending in said main scanning direction for allowing passage of said light beam therethrough, and an aperture opening above the section including said main scanning line on said sheet, said integrating cylinder being positioned so that said light receiving face of said photomultiplier is positioned at the inner surface of said integrating cylinder.
Claim 24
Dependent Claim
57 words
An apparatus as defined in claim 21 wherein said sheet is a stimulable phosphor sheet carrying a radiation image stored thereon, said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and said light detection means detects the light emitted by said stimulable phosphor sheet.
Claim 25
Dependent Claim
57 words
An apparatus as defined in claim 22 wherein said sheet is a stimulable phosphor sheet carrying a radiation image stored thereon, said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and said light detection means detects the light emitted by said stimulable phosphor sheet.
Claim 26
Dependent Claim
95 words
An apparatus as defined in claim 23 wherein said light detection means is provided with a filter for selectively transmitting light having a wavelength within the wavelength range of the light emitted by said stimulable phosphor sheet and/or a light guide member for guiding the light, which is emitted by said stimulable phosphor sheet and enters from a light input face of said light guide member positioned to face said stimulable phosphor sheet, to said light receiving face of said photomultiplier, said filter and/or said light guide member being positioned on said light receiving face.
Claim 27
Dependent Claim
49 words
An apparatus as defined in claim 23 wherein said optical reflection element is a dichroic mirror for reflecting light having a wavelength within the wavelength range of said stimulating rays and transmitting light having a wavelength within the wavelength range of the light emitted by said stimulable phosphor sheet.
Claim 28
Dependent Claim
49 words
An apparatus as defined in claim 25 wherein said optical reflection element is a dichroic mirror for reflecting light having a wavelength within the wavelength range of said stimulating rays and transmitting light having a wavelength within the wavelength range of the light emitted by said stimulable phosphor sheet.
Claim 29
Dependent Claim
93 words
A light detecting device for detecting light carrying image information and obtained from a scanning surface carrying the image information recorded thereon when said scanning surface is scanned by a light beam, wherein the improvement comprises the provision of: (i) a long photomultiplier having a light receiving face extending along a scanning line of said light beam and positioned close to said scanning surface, (ii) an optical element adhered to said light receiving face of said photomultiplier by a light-permeable adhesive, and (iii) a moisture-proof material for covering side faces of said adhesive.
Claim 30
Dependent Claim
93 words
A light detecting device for detecting light carrying image information and obtained from a scanning surface carrying the image information recorded thereon when said scanning surface is scanned by a light beam, wherein the improvement comprises the provision of: (i) a long photomultiplier having a light receiving face extending along a scanning line of said light beam and positioned close to said scanning surface, (ii) an optical element adhered to said light receiving face of said photomultiplier by a light-permeable adhesive, and (iii) a moisture-proof material for covering side faces of said adhesive.
Claim 31
Dependent Claim
47 words
A light detecting device as defined in claim 28 wherein said scanning surface is a stimulable phosphor sheet carrying a radiation image stored thereon, and said light beam is stimulating rays for causing said stimulable phosphor sheet to emit light in proportion to the stored radiation energy.
Claim 32
Dependent Claim
27 words
A light detecting device as defined in claim 29 wherein said optical element is a filter for selectively transmitting the light emitted by said stimulable phosphor sheet.
Claim 33
Dependent Claim
138 words
A light detecting device for detecting light emitted by a stimulable phosphor sheet carrying a radiation image stored thereon in proportion to the stored radiation energy when said stimulable phosphor sheet is scanned by stimulating rays, wherein the improvement comprises the provision of: (i) a long photomultiplier having a light receiving face extending along a scanning line of said stimulating rays and positioned close to said stimulable phosphor sheet with said light receiving face facing said stimulable phosphor sheet, (ii) a filter for selectively transmitting the light emitted by said stimulable phosphor sheet, said filter being formed integrally with said photomultiplier and disposed between said light receiving face and said scanning line, and (iii) a light-shielding material for covering regions from side faces of said filter to side faces of said photomultiplier adjacent to said light receiving face.
Claim 34
Dependent Claim
138 words
A light detecting device for detecting light emitted by a stimulable phosphor sheet carrying a radiation image stored thereon in proportion to the stored radiation energy when said stimulable phosphor sheet is scanned by stimulating rays, wherein the improvement comprises the provision of: (i) a long photomultiplier having a light receiving face extending along a scanning line of said stimulating rays and positioned close to said stimulable phosphor sheet with said light receiving face facing said stimulable phosphor sheet, (ii) a filter for selectively transmitting the light emitted by said stimulable phosphor sheet, said filter being formed integrally with said photomultiplier and disposed between said light receiving face and said scanning line, and (iii) a light-shielding material for covering regions from side faces of said filter to side faces of said photomultiplier adjacent to said light receiving face.
Claim 35
Dependent Claim
17 words
A light detecting device as defined in claim 31 wherein said light-shielding material is a black paint.
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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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |