JP4481810B2 - Radiation image reader - Google Patents

Radiation image reader Download PDF

Info

Publication number
JP4481810B2
JP4481810B2 JP2004367227A JP2004367227A JP4481810B2 JP 4481810 B2 JP4481810 B2 JP 4481810B2 JP 2004367227 A JP2004367227 A JP 2004367227A JP 2004367227 A JP2004367227 A JP 2004367227A JP 4481810 B2 JP4481810 B2 JP 4481810B2
Authority
JP
Japan
Prior art keywords
stimulable phosphor
phosphor sheet
radiation image
image information
reading
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2004367227A
Other languages
Japanese (ja)
Other versions
JP2006171603A (en
Inventor
智 津藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Corp
Original Assignee
Fujifilm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2004367227A priority Critical patent/JP4481810B2/en
Publication of JP2006171603A publication Critical patent/JP2006171603A/en
Application granted granted Critical
Publication of JP4481810B2 publication Critical patent/JP4481810B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、蓄積性蛍光体シートに蓄積記録された放射線画像情報を読み取る放射線画像読取装置に関する。   The present invention relates to a radiographic image reading apparatus that reads radiographic image information accumulated and recorded on a stimulable phosphor sheet.

従来から、照射された放射線エネルギの一部を蓄積する一方、可視光等の励起光を照射することにより、蓄積された放射線エネルギに応じて輝尽発光する蓄積性蛍光体シートを用いた放射線画像読取装置が知られている。   Conventionally, radiation images using a stimulable phosphor sheet that accumulates part of the irradiated radiation energy and emits stimulating light according to the accumulated radiation energy by irradiating excitation light such as visible light. Readers are known.

放射線画像読取装置は、例えば、人体等の被写体の放射線画像情報が蓄積記録された蓄積性蛍光体シートを収納したカセッテが装填されるカセッテ装填部と、蓄積性蛍光体シートに励起光を照射して放射線画像情報を読み取る読取部と、放射線画像情報の読み取られた蓄積性蛍光体シートに消去光を照射して残存する放射線画像情報を消去する消去部とを備えて構成される。なお、消去処理の完了した蓄積性蛍光体シートは、カセッテに収納されて外部に排出され、再利用に供せられる（特許文献１参照）。   The radiological image reading apparatus, for example, irradiates the stimulable phosphor sheet with excitation light and a cassette loading unit in which a cassette containing a stimulable phosphor sheet in which radiographic image information of a subject such as a human body is accumulated and recorded is loaded. The reading unit reads the radiation image information and the erasing unit that erases the remaining radiation image information by irradiating the storable phosphor sheet from which the radiation image information has been read. Note that the stimulable phosphor sheet that has been erased is stored in a cassette, discharged to the outside, and reused (see Patent Document 1).

ところで、放射線画像情報の読取処理を行う際、蓄積性蛍光体シートに塵埃が付着していると、その部分からの輝尽発光光が妨げられ、再生画像に不良部分が発生する。また、蓄積性蛍光体シートは、ゴム系又は樹脂系の搬送ローラで搬送される際に帯電し易く、その電荷の影響により放射線画像情報の一部にノイズが発生するおそれがある。   By the way, if dust is attached to the stimulable phosphor sheet when the radiation image information reading process is performed, the stimulated emission light from that portion is hindered and a defective portion is generated in the reproduced image. In addition, the stimulable phosphor sheet is easily charged when being conveyed by a rubber-based or resin-based conveying roller, and noise may be generated in a part of the radiation image information due to the influence of the charge.

そこで、特許文献１に開示された従来技術では、蓄積性蛍光体シートの搬送路中に導電性のブラシローラを配設し、このブラシローラを介して蓄積性蛍光体シートを搬送することにより、放射線画像情報の読取処理に先立ち、蓄積性蛍光体シートからの塵埃の除去及び除電を行うようにしている。   Therefore, in the prior art disclosed in Patent Document 1, a conductive brush roller is disposed in the conveying path of the stimulable phosphor sheet, and the stimulable phosphor sheet is conveyed via the brush roller, Prior to the radiation image information reading process, dust is removed from the stimulable phosphor sheet and the charge is eliminated.

特開２００３−１８６１２７号公報JP 2003-186127 A

しかしながら、読取処理に悪影響を与えるおそれがあることから、搬送路中の読取処理を行う部位にはブラシローラを配設することはできない。そのため、例えば、読取処理を行う直前に、上部から落下した塵埃が蓄積性蛍光体シートに付着してしまうと、適切な放射線画像情報を得ることができなくなってしまう。   However, since there is a possibility of adversely affecting the reading process, a brush roller cannot be provided at a portion where the reading process is performed in the conveyance path. Therefore, for example, if dust that has dropped from the upper part adheres to the stimulable phosphor sheet immediately before the reading process is performed, appropriate radiographic image information cannot be obtained.

本発明は、前記の課題に鑑みなされたもので、蓄積性蛍光体シートに塵埃が付着する事態を好適に回避して高精度な放射線画像情報の読取処理を行うことのできるコンパクトな構成からなる放射線画像読取装置を提供することを目的とする。   The present invention has been made in view of the above problems, and has a compact configuration capable of suitably avoiding a situation where dust is attached to the stimulable phosphor sheet and performing highly accurate reading processing of radiation image information. An object is to provide a radiation image reading apparatus.

本発明の放射線画像読取装置では、上部のカセッテ装填部に装填されたカセッテから取り出された蓄積性蛍光体シートが、湾曲搬送路を介して下方向に搬送される。次いで、湾曲搬送路の最下部において、励起手段からの励起光が蓄積性蛍光体シートに照射され、励起された放射線画像情報に係る輝尽発光光が読取手段によって読み取られる。放射線画像情報の読み取られた蓄積性蛍光体シートは、湾曲搬送路を介して一旦上方向に搬送された後、再び、最下部の湾曲搬送路を介してカセッテ装填部のカセッテに戻される。   In the radiation image reading apparatus of the present invention, the stimulable phosphor sheet taken out from the cassette loaded in the upper cassette loading unit is conveyed downward through the curved conveyance path. Next, at the lowermost part of the curved conveyance path, the stimulable phosphor sheet is irradiated with excitation light from the excitation means, and the stimulated emission light related to the excited radiation image information is read by the reading means. The stimulable phosphor sheet from which the radiation image information has been read is once transported upward through the curved transport path, and then returned to the cassette in the cassette loading section again through the lowermost curved transport path.

この場合、蓄積性蛍光体シートを上方向に搬送する湾曲搬送路には、防塵手段が配設されており、この防塵手段により、当該装置の上方向から湾曲搬送路を介して放射線画像情報の読取部位に塵埃が落下して蓄積性蛍光体シートに付着する事態を回避することができる。   In this case, a dust-proof means is disposed in the curved conveyance path for conveying the stimulable phosphor sheet upward, and the dust-proof means allows the radiographic image information to be transmitted from above the apparatus through the curved conveyance path. It is possible to avoid a situation where dust falls on the reading site and adheres to the stimulable phosphor sheet.

防塵手段としては、蓄積性蛍光体シートの表面に摺接するブラシやスポンジ等の可撓性部材を用いることができる。また、この可撓性部材を導電性材料とすることにより、塵埃が読取部位に落下する事態を回避できるとともに、帯電した蓄積性蛍光体シートを除電することができる。   As the dustproof means, a flexible member such as a brush or a sponge that slides on the surface of the stimulable phosphor sheet can be used. In addition, by using the flexible member as a conductive material, it is possible to avoid a situation where dust falls on the reading portion, and it is possible to eliminate the charged storage phosphor sheet.

本発明の放射線画像読取装置では、上方向から落下する塵埃が蓄積性蛍光体シートに付着する事態を好適に回避して高精度な放射線画像情報の読取処理を行うことができる。特に、蓄積性蛍光体シートの搬送路を湾曲搬送路として装置のコンパクト化を図った場合において、上方向に延在する湾曲搬送路からの塵埃の落下を阻止することができる。また、塵埃の落下を阻止する防塵手段を導電性の可撓性部材とすることにより、防塵及び除電の両方の機能を同時に実現することができる。   In the radiographic image reading apparatus of the present invention, it is possible to suitably avoid the situation where dust falling from the upper side adheres to the stimulable phosphor sheet, and to perform highly accurate radiographic image information reading processing. In particular, when the storage path of the stimulable phosphor sheet is used as a curved conveyance path to reduce the size of the apparatus, it is possible to prevent dust from falling from the curved conveyance path extending upward. Further, by using a conductive flexible member as the dust-proof means for preventing the dust from falling, both functions of dust-proofing and static elimination can be realized at the same time.

図１は、本実施形態の放射線画像読取装置１０の外観図、図２は、その内部構成図である。   FIG. 1 is an external view of the radiation image reading apparatus 10 of the present embodiment, and FIG. 2 is an internal configuration diagram thereof.

放射線画像読取装置１０は、ケーシング１２の上部にカセッテ装填部１４を備え、このカセッテ装填部１４に形成された装填口１５に対して、放射線画像情報が蓄積記録された蓄積性蛍光体シート１６を収容したカセッテ１８（１８ａ）が装填される。なお、カセッテ１８ａは、カセッテ１８よりもサイズが小さいものとする。   The radiographic image reading apparatus 10 includes a cassette loading unit 14 on an upper portion of a casing 12, and a stimulable phosphor sheet 16 in which radiographic image information is accumulated and recorded in a loading port 15 formed in the cassette loading unit 14. The accommodated cassette 18 (18a) is loaded. The cassette 18a is assumed to be smaller in size than the cassette 18.

カセッテ装填部１４は、矢印方向に個別に変位自在なカバー部材２０ａ、２０ｂを有する。大サイズのカセッテ１８が装填されたときには、カバー部材２０ａ、２０ｂの両方が変位して装填口１５の全体が開放され、小サイズのカセッテ１８ａが装填されたときには、カバー部材２０ａのみが変位して装填口１５の一部が開放される。これにより、放射線画像読取装置１０の内部への塵埃の侵入を最小限に抑制することができる。カセッテ装填部１４の側部には、電源ボタン２２、操作ボタン２４、表示部２６等が配設される。   The cassette loading unit 14 includes cover members 20a and 20b that are individually displaceable in the arrow direction. When the large-size cassette 18 is loaded, both the cover members 20a and 20b are displaced and the entire loading port 15 is opened. When the small-size cassette 18a is loaded, only the cover member 20a is displaced. A part of the loading port 15 is opened. Thereby, intrusion of dust into the inside of the radiation image reading apparatus 10 can be suppressed to a minimum. On the side portion of the cassette loading unit 14, a power button 22, an operation button 24, a display unit 26, and the like are disposed.

放射線画像読取装置１０の内部の装填口１５に近接する部位には、カセッテ１８（１８ａ）の蓋部材２１のロックを解除するロック解除機構２８と、蓋部材２１が開蓋されたカセッテ１８（１８ａ）から蓄積性蛍光体シート１６を吸着して取り出す吸着盤３０と、吸着盤３０によって取り出された蓄積性蛍光体シート１６を挟持搬送するニップローラ３２とが配設される。   At a portion close to the loading port 15 inside the radiographic image reading apparatus 10, an unlocking mechanism 28 for unlocking the lid member 21 of the cassette 18 (18a) and a cassette 18 (18a) with the lid member 21 opened are provided. ), An adsorbing plate 30 that adsorbs and takes out the stimulable phosphor sheet 16, and a nip roller 32 that sandwiches and conveys the accumulative phosphor sheet 16 taken out by the adsorbing plate 30.

ニップローラ３２に連設して、複数の搬送ローラ３４ａ〜３４ｇ及び複数のガイド板３６ａ〜３６ｆが配設され、これらにより湾曲搬送路３８が構成される。すなわち、湾曲搬送路３８は、カセッテ装填部１４から下方向に延在した後、最下部において略水平状態となり、次いで、略鉛直上方向に延在する。これにより、放射線画像読取装置１０の小型化が達成される。   A plurality of transport rollers 34 a to 34 g and a plurality of guide plates 36 a to 36 f are arranged in series with the nip roller 32, and a curved transport path 38 is configured by these. That is, the curved conveyance path 38 extends downward from the cassette loading unit 14, then becomes substantially horizontal at the lowermost portion, and then extends substantially vertically upward. Thereby, size reduction of the radiographic image reading apparatus 10 is achieved.

ニップローラ３２と搬送ローラ３４ａとの間には、読取処理が終了した蓄積性蛍光体シート１６に残存する放射線画像情報を消去するための消去ユニット３９が配設される。消去ユニット３９は、消去光を出力する冷陰極管等の消去光源４１を有する。   Between the nip roller 32 and the conveyance roller 34a, an erasing unit 39 for erasing the radiation image information remaining on the stimulable phosphor sheet 16 that has been read is disposed. The erasing unit 39 has an erasing light source 41 such as a cold cathode tube that outputs erasing light.

湾曲搬送路３８の最下部に配設される搬送ローラ３４ｄ、３４ｅ間には、プラテンローラ４３が配設される。そして、プラテンローラ４３の上部には、ハウジング４５に収容され、蓄積性蛍光体シート１６に蓄積記録された放射線画像情報を読み取る走査ユニット４７が配設される。   A platen roller 43 is disposed between the transport rollers 34d and 34e disposed at the lowermost portion of the curved transport path 38. A scanning unit 47 that reads the radiation image information stored and recorded in the stimulable phosphor sheet 16 is disposed above the platen roller 43.

走査ユニット４７は、励起光であるレーザビームＬを導出して蓄積性蛍光体シート１６を走査する励起部４０（励起手段）と、レーザビームＬによって励起されて出力される放射線画像情報に係る輝尽発光光を読み取る読取部４２（読取手段）とを備える。   The scanning unit 47 derives a laser beam L that is excitation light and scans the stimulable phosphor sheet 16, and a brightness associated with radiation image information that is excited by the laser beam L and output. And a reading unit 42 (reading unit) that reads the exhausted light.

励起部４０は、レーザビームＬを出力するレーザ発振器４４と、レーザビームＬを蓄積性蛍光体シート１６の主走査方向に偏向する回転多面鏡であるポリゴンミラー４６と、レーザビームＬを反射させ、プラテンローラ４３上を通過する蓄積性蛍光体シート１６に導く反射ミラー４８とを備える。   The excitation unit 40 reflects the laser beam L, a laser oscillator 44 that outputs the laser beam L, a polygon mirror 46 that is a rotary polygon mirror that deflects the laser beam L in the main scanning direction of the stimulable phosphor sheet 16, and the laser beam L. And a reflection mirror 48 that leads to the stimulable phosphor sheet 16 that passes over the platen roller 43.

読取部４２は、一端部がプラテンローラ４３上の蓄積性蛍光体シート１６に近接して配置される集光ガイド５０と、集光ガイド５０の他端部に連結され、蓄積性蛍光体シート１６から得られた輝尽発光光を電気信号に変換するフォトマルチプライヤ５２とを備える。なお、集光ガイド５０の一端部には、輝尽発光光の集光効率を高めるための集光ミラー５４が近接して配設される。   The reading unit 42 is connected at one end to the light-storing phosphor sheet 16 on the platen roller 43 and the other end of the light-collecting guide 50, and is connected to the light-storing phosphor sheet 16. And a photomultiplier 52 that converts the stimulated emission light obtained from the above into an electrical signal. A condensing mirror 54 for increasing the condensing efficiency of the photostimulated luminescent light is disposed adjacent to one end of the condensing guide 50.

湾曲搬送路３８を構成して鉛直上方向に延在するガイド板３６ｆに近接する搬送ローラ３４ｇの上部には、防塵手段を構成するブラシ５６が配設される。ブラシ５６は、図３に示すように、蓄積性蛍光体シート１６の搬送方向と直交する方向に延在して配設され、ハウジング４５側に固定され、先端部がガイド板３６ｆに摺接するように構成される。   A brush 56 that constitutes dustproof means is disposed on the upper part of the conveyance roller 34g that constitutes the curved conveyance path 38 and is adjacent to the guide plate 36f that extends vertically upward. As shown in FIG. 3, the brush 56 is disposed so as to extend in a direction orthogonal to the conveying direction of the stimulable phosphor sheet 16, is fixed to the housing 45 side, and has a tip portion that is in sliding contact with the guide plate 36f. Consists of.

ブラシ５６は、多数の髭状繊維を植設してなる可撓性部材であり、帯電した蓄積性蛍光体シート１６の電荷を除電する導電性材料によって構成される。なお、ブラシ５６に代えて、スポンジ状の材料を防塵手段として用いることもできる。   The brush 56 is a flexible member in which a large number of cocoon-like fibers are implanted, and is made of a conductive material that neutralizes the charge of the charged storage phosphor sheet 16. In place of the brush 56, a sponge-like material can be used as a dustproof means.

本実施形態の放射線画像読取装置１０は、基本的には以上のように構成されるものであり、次にその動作について説明する。   The radiation image reading apparatus 10 of the present embodiment is basically configured as described above, and the operation thereof will be described next.

放射線画像情報が蓄積記録された蓄積性蛍光体シート１６を収納したカセッテ１８（１８ａ）は、蓋部材２１を下としてカセッテ装填部１４の装填口１５に装填される。   The cassette 18 (18a) containing the stimulable phosphor sheet 16 in which the radiation image information is accumulated and recorded is loaded into the loading port 15 of the cassette loading unit 14 with the lid member 21 facing down.

放射線画像読取装置１０にカセッテ１８（１８ａ）が所定の状態で装填されると、ロック解除機構２８が駆動され、蓋部材２１のロック状態が解除されて開蓋される。次いで、吸着盤３０が蓄積性蛍光体シート１６を吸着し、カセッテ１８（１８ａ）から蓄積性蛍光体シート１６を取り出してニップローラ３２間に供給する。ニップローラ３２により挟持された蓄積性蛍光体シート１６は、搬送ローラ３４ａ〜３４ｇ及びガイド板３６ａ〜３６ｆからなる湾曲搬送路３８によって搬送される。   When the cassette 18 (18a) is loaded into the radiation image reading apparatus 10 in a predetermined state, the lock release mechanism 28 is driven, the locked state of the lid member 21 is released, and the lid is opened. Next, the suction disk 30 sucks the stimulable phosphor sheet 16, takes out the stimulable phosphor sheet 16 from the cassette 18 (18 a), and supplies it between the nip rollers 32. The stimulable phosphor sheet 16 sandwiched between the nip rollers 32 is conveyed by a curved conveyance path 38 including conveyance rollers 34a to 34g and guide plates 36a to 36f.

蓄積性蛍光体シート１６は、搬送ローラ３４ａ〜３４ｃによって下方向に搬送された後、最下部の搬送ローラ３４ｄ及び３４ｅにより略水平方向に副走査搬送される。   The stimulable phosphor sheet 16 is conveyed in the downward direction by the conveying rollers 34a to 34c, and is then sub-scanned and conveyed in the substantially horizontal direction by the lowermost conveying rollers 34d and 34e.

このとき、励起部４０を構成するレーザ発振器４４から出力されたレーザビームＬは、高速で回転するポリゴンミラー４６によって反射偏向された後、反射ミラー４８を介して下面部がプラテンローラ４３により支持された蓄積性蛍光体シート１６に導かれる。   At this time, the laser beam L output from the laser oscillator 44 constituting the excitation unit 40 is reflected and deflected by the polygon mirror 46 that rotates at high speed, and then the lower surface portion is supported by the platen roller 43 via the reflection mirror 48. The accumulated phosphor sheet 16 is guided.

蓄積性蛍光体シート１６は、レーザビームＬが照射されることで励起され、蓄積記録されている放射線画像情報に応じた輝尽発光光が出力される。この輝尽発光光は、蓄積性蛍光体シート１６の主走査方向に沿って近接配置された集光ガイド５０の下端部に直接入射し、あるいは、集光ミラー５４を介して入射する。集光ガイド５０に入射した輝尽発光光は、内部で反射を繰り返し、上端部のフォトマルチプライヤ５２に導かれる。フォトマルチプライヤ５２は、入射した輝尽発光光を電気信号としての放射線画像情報に変換し、図示しない通信手段を介して外部の画像処理装置に転送する。   The stimulable phosphor sheet 16 is excited by being irradiated with the laser beam L, and stimulated emission light according to the stored and recorded radiation image information is output. This stimulated emission light is directly incident on the lower end portion of the condensing guide 50 disposed close to the stimulable phosphor sheet 16 along the main scanning direction, or is incident through the condensing mirror 54. The stimulated emission light incident on the light collecting guide 50 is repeatedly reflected inside and guided to the photomultiplier 52 at the upper end. The photomultiplier 52 converts incident stimulated emission light into radiation image information as an electrical signal, and transfers the radiation image information to an external image processing apparatus via a communication unit (not shown).

一方、蓄積性蛍光体シート１６は、読取処理の完了した先端部側が鉛直上方向に延在するガイド板３６ｆに沿って上方向に搬送される。   On the other hand, the stimulable phosphor sheet 16 is conveyed upward along a guide plate 36f whose front end side, which has completed the reading process, extends vertically upward.

このとき、ガイド板３６ｆには、導電性材料からなるブラシ５６の先端部が摺接しており、ガイド板３６ｆに沿った蓄積性蛍光体シート１６の搬送路を上下に分離している。また、蓄積性蛍光体シート１６の先端部がガイド板３６ｆに沿って上昇すると、ブラシ５６の先端部が蓄積性蛍光体シート１６の表面に摺接するため、ガイド板３６ｆに沿った搬送路の上下の分離状態がそのまま確保される。従って、蓄積性蛍光体シート１６の読取処理中にケーシング１２の上部から塵埃が落下したとしても、その塵埃は、ブラシ５６によって捕獲されるため、読取処理を行っているプラテンローラ４３の部位まで到達することがなく、塵埃による読取不良が発生することはない。   At this time, the tip of the brush 56 made of a conductive material is in sliding contact with the guide plate 36f, and the conveyance path of the stimulable phosphor sheet 16 along the guide plate 36f is vertically separated. Further, when the tip of the stimulable phosphor sheet 16 rises along the guide plate 36f, the tip of the brush 56 comes into sliding contact with the surface of the stimulable phosphor sheet 16, so that the upper and lower sides of the conveyance path along the guide plate 36f The separated state is secured as it is. Therefore, even if dust falls from the upper part of the casing 12 during the reading process of the stimulable phosphor sheet 16, the dust is captured by the brush 56, and therefore reaches the part of the platen roller 43 that is performing the reading process. And reading failure due to dust does not occur.

走査ユニット４７による放射線画像情報の読取処理が完了すると、蓄積性蛍光体シート１６は、湾曲搬送路３８により逆転搬送され、湾曲搬送路３８の最下部を介して上方向に搬送された後、消去ユニット３９を介してカセッテ装填部１４のカセッテ１８（１８ａ）に収納される。このとき、消去ユニット３９を構成する消去光源４１が点灯し、消去光源４１から出力される消去光が蓄積性蛍光体シート１６に照射されることで、残存する放射線エネルギの消去処理が行われる。   When the reading process of the radiation image information by the scanning unit 47 is completed, the stimulable phosphor sheet 16 is reversely conveyed by the curved conveyance path 38 and conveyed upward through the lowermost portion of the curved conveyance path 38 and then erased. It is accommodated in the cassette 18 (18a) of the cassette loading section 14 via the unit 39. At this time, the erasing light source 41 constituting the erasing unit 39 is turned on, and the erasing light output from the erasing light source 41 is irradiated onto the stimulable phosphor sheet 16, whereby the remaining radiation energy is erased.

放射線エネルギが消去された蓄積性蛍光体シート１６を収納したカセッテ１８（１８ａ）は、放射線画像読取装置１０から抜き取られた後、次なる放射線画像情報の撮影に供せられる。この場合、蓄積性蛍光体シート１６は、ガイド板３６ｆに沿って搬送される際、導電性材料からなるブラシ５６が摺接することで除電されているため、帯電していない良好な状態で供給することができる。   The cassette 18 (18a) containing the stimulable phosphor sheet 16 from which the radiation energy has been erased is taken out of the radiation image reading device 10 and then used for photographing the next radiation image information. In this case, when the stimulable phosphor sheet 16 is conveyed along the guide plate 36f, it is neutralized by sliding the brush 56 made of a conductive material, so that it is supplied in an uncharged state. be able to.

なお、上述した実施形態では、読取処理の完了した蓄積性蛍光体シート１６の先端側を鉛直上方向に搬送する部位に配設したブラシ５６により、上部からの塵埃を阻止するように構成しているが、例えば、放射線画像情報の読取処理前の蓄積性蛍光体シート１６を下方向に搬送する部位、例えば、搬送ローラ３４ｂ、３４ｃ等の近傍にも同様な防塵手段を配設し、読取処理前の蓄積性蛍光体シート１６に対する塵埃の付着の防止及び除電を行うように構成してもよい。   In the above-described embodiment, the front end side of the stimulable phosphor sheet 16 that has been read is configured to be prevented from dust from the upper portion by the brush 56 disposed in a portion that is conveyed vertically upward. However, for example, a similar dustproof means is disposed in the vicinity of the site where the stimulable phosphor sheet 16 before the radiographic image information reading process is conveyed, for example, in the vicinity of the conveying rollers 34b, 34c, etc. You may comprise so that the adhesion of the dust with respect to the front storage phosphor sheet | seat 16 may be prevented, and static elimination may be performed.

本実施形態の放射線画像読取装置の外観図である。It is an external view of the radiographic image reading apparatus of this embodiment. 本実施形態の放射線画像読取装置の内部構成図である。It is an internal block diagram of the radiographic image reading apparatus of this embodiment. 図２に示す読取部の要部拡大一部省略斜視図である。FIG. 3 is a partially enlarged perspective view of a main part of the reading unit shown in FIG.

符号の説明Explanation of symbols

１０…放射線画像読取装置 １４…カセッテ装填部
１６…蓄積性蛍光体シート １８、１８ａ…カセッテ
３６ａ〜３６ｆ…ガイド板 ３８…湾曲搬送路
３９…消去ユニット ４０…励起部
４２…読取部 ４３…プラテンローラ
４５…ハウジング ４７…走査ユニット
５６…ブラシ DESCRIPTION OF SYMBOLS 10 ... Radiation image reader 14 ... Cassette loading part 16 ... Stimulating phosphor sheet 18, 18a ... Cassette 36a-36f ... Guide plate 38 ... Curve conveyance path 39 ... Erase unit 40 ... Excitation part 42 ... Reading part 43 ... Platen roller 45 ... Housing 47 ... Scanning unit 56 ... Brush

Claims (3)

上部に配設され、放射線画像情報が蓄積記録された蓄積性蛍光体シートを収納したカセッテが装填されるカセッテ装填部と、前記カセッテから取り出された前記蓄積性蛍光体シートを下方向に搬送した後、上方向に搬送する湾曲搬送路と、前記湾曲搬送路の最下部に沿って副方向に搬送される前記蓄積性蛍光体シートの主方向に励起光を照射する励起手段と、前記励起光によって励起された放射線画像情報に係る輝尽発光光を受光して読み取る読取手段とを備える放射線画像読取装置において、
前記湾曲搬送路中、前記上方向への搬送路として、当該上方向に延在して配設されたガイド板と、
前記読取手段による前記放射線画像情報の読取処理中に読取部位近傍に対する塵埃の落下を防止するために、前記ガイド板に対して蓄積性蛍光体シートの搬送方向と直交する方向に延在して配設されるとともに、先端部が、前記ガイド板に摺接するように配設された可撓性部材と、
を有し、
前記読取手段による前記放射線画像情報の読取処理中、前記蓄積性蛍光体シートが前記ガイド板に沿って前記湾曲搬送路の上方向に搬送されたときに、前記可撓性部材の前記先端部が前記蓄積性蛍光体シートの表面に摺接することを特徴とする放射線画像読取装置。 A cassette loading unit that is disposed in the upper portion and is loaded with a cassette containing a stimulable phosphor sheet on which radiation image information is accumulated and recorded, and the stimulable phosphor sheet taken out from the cassette is conveyed downward. A curved conveyance path that conveys upward, an excitation means that irradiates excitation light in the main direction of the stimulable phosphor sheet that is conveyed in the sub-direction along the lowest part of the curved conveyance path, and the excitation light In a radiation image reading apparatus comprising reading means that receives and reads the stimulated emission light related to the radiation image information excited by
During the curved conveying path, as a transport path to the upper direction, and the guide plate disposed in extending the upward direction,
In order to prevent the dust from falling to the vicinity of the reading site during the reading process of the radiation image information by the reading means , the guide plate extends in a direction perpendicular to the conveying direction of the stimulable phosphor sheet. And a flexible member disposed so that the tip portion is in sliding contact with the guide plate;
I have a,
During the reading process of the radiation image information by the reading unit, when the stimulable phosphor sheet is conveyed upward along the guide plate along the curved conveyance path, the distal end portion of the flexible member is the stimulable phosphor radiation image reading apparatus, characterized by sliding contact with the surface of the sheet. 請求項１記載の装置において、
前記可撓性部材は、ブラシにより構成されることを特徴とする放射線画像読取装置。 The apparatus of claim 1 .
The radiographic image reading apparatus, wherein the flexible member is constituted by a brush. 請求項１記載の装置において、
前記可撓性部材は、導電性材料により構成されることを特徴とする放射線画像読取装置。 The apparatus of claim 1 .
The radiographic image reading apparatus, wherein the flexible member is made of a conductive material.
JP2004367227A 2004-12-20 2004-12-20 Radiation image reader Expired - Fee Related JP4481810B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004367227A JP4481810B2 (en) 2004-12-20 2004-12-20 Radiation image reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004367227A JP4481810B2 (en) 2004-12-20 2004-12-20 Radiation image reader

Publications (2)

Publication Number Publication Date
JP2006171603A JP2006171603A (en) 2006-06-29
JP4481810B2 true JP4481810B2 (en) 2010-06-16

Family

ID=36672414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004367227A Expired - Fee Related JP4481810B2 (en) 2004-12-20 2004-12-20 Radiation image reader

Country Status (1)

Country Link
JP (1) JP4481810B2 (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628938A (en) * 1985-07-04 1987-01-16 Fuji Photo Film Co Ltd Transfer device for accumulating type fluorescent material sheet
JPH0568131A (en) * 1991-09-09 1993-03-19 Fuji Photo Film Co Ltd Dust removing mechanism for radiation image reader
JPH0572656A (en) * 1991-09-11 1993-03-26 Fuji Photo Film Co Ltd Cleaning mechanism for stimulative phosphor sheet
JPH05142685A (en) * 1991-11-21 1993-06-11 Fuji Photo Film Co Ltd Radiograph information reader
JPH08114875A (en) * 1994-10-14 1996-05-07 Fuji Photo Film Co Ltd Radiograph reader
JPH10123635A (en) * 1996-10-17 1998-05-15 Fuji Photo Film Co Ltd Radiation image information reading device
JPH10128259A (en) * 1996-11-05 1998-05-19 Kobe Steel Ltd Dust removing device of accumulative phosphor sheet
JP2000330227A (en) * 1999-05-21 2000-11-30 Fuji Photo Film Co Ltd Radiation image information reader
JP2001027787A (en) * 1999-05-10 2001-01-30 Fuji Photo Film Co Ltd Radiograph image reader
JP2001242570A (en) * 2000-03-01 2001-09-07 Fuji Photo Film Co Ltd Radiograph information reader
JP2001321731A (en) * 2000-05-15 2001-11-20 Fuji Photo Film Co Ltd Cleaning mechanism for sheet recording media
JP2003186127A (en) * 2001-12-18 2003-07-03 Fuji Photo Film Co Ltd Sheet body cleaner

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628938A (en) * 1985-07-04 1987-01-16 Fuji Photo Film Co Ltd Transfer device for accumulating type fluorescent material sheet
JPH0568131A (en) * 1991-09-09 1993-03-19 Fuji Photo Film Co Ltd Dust removing mechanism for radiation image reader
JPH0572656A (en) * 1991-09-11 1993-03-26 Fuji Photo Film Co Ltd Cleaning mechanism for stimulative phosphor sheet
JPH05142685A (en) * 1991-11-21 1993-06-11 Fuji Photo Film Co Ltd Radiograph information reader
JPH08114875A (en) * 1994-10-14 1996-05-07 Fuji Photo Film Co Ltd Radiograph reader
JPH10123635A (en) * 1996-10-17 1998-05-15 Fuji Photo Film Co Ltd Radiation image information reading device
JPH10128259A (en) * 1996-11-05 1998-05-19 Kobe Steel Ltd Dust removing device of accumulative phosphor sheet
JP2001027787A (en) * 1999-05-10 2001-01-30 Fuji Photo Film Co Ltd Radiograph image reader
JP2000330227A (en) * 1999-05-21 2000-11-30 Fuji Photo Film Co Ltd Radiation image information reader
JP2001242570A (en) * 2000-03-01 2001-09-07 Fuji Photo Film Co Ltd Radiograph information reader
JP2001321731A (en) * 2000-05-15 2001-11-20 Fuji Photo Film Co Ltd Cleaning mechanism for sheet recording media
JP2003186127A (en) * 2001-12-18 2003-07-03 Fuji Photo Film Co Ltd Sheet body cleaner

Also Published As

Publication number Publication date
JP2006171603A (en) 2006-06-29

Similar Documents

Publication Publication Date Title
JP2756377B2 (en) Radiation image information reader
JP4481810B2 (en) Radiation image reader
JPH03200244A (en) Radiograph information reader
JP4512575B2 (en) Radiation image information reading apparatus and control method thereof
JP2574154B2 (en) Radiation image information reader
US20070125973A1 (en) Erasing device and erasing method
US7138647B2 (en) Image reading apparatus
JP3825928B2 (en) Radiation image information reader
JPH07101285B2 (en) Radiation image information reader
JP3980245B2 (en) Image information reader
JP2006091126A (en) Radiation image reading apparatus
JP2004101988A (en) Image scanning device
JP4328590B2 (en) Radiation image information reading device
JP2003005316A (en) Radiation image information reading method and device as well as cassette
JP2000267209A (en) Radiation image recording and reading device, radiation image recording medium, cassette and static electricity removing method
JP2005257620A (en) Radiation image conversion panel, cassette, and image reader
JP2005241986A (en) Erasing device
JPH0690418B2 (en) Radiation image information reading and reproducing device
JPH0693077B2 (en) Radiation image information reader
JP2005241985A (en) Radiation image conversion panel and radiation image reader using same
JP2005221904A (en) Radiation image information reader and stimulable phosphor sheet conveying method using the reader
JP2007121487A (en) Image forming apparatus
JPH0968766A (en) Radiation image reader
JP2004094030A (en) Radiation image information eraser
JP2005055559A (en) Optical system adjusting mechanism in optical scanning device and method for adjusting optical system

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20061212

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070702

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091209

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091222

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100219

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100316

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100318

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140326

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees