JP2004085878A - Cassette for radiation image conversion panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cassette for a radiation image conversion panel by which the conversion panel can be easily and surely attached to/detached from a cassette main body. <P>SOLUTION: The cassette for the radiation image conversion panel 1 is constituted of a cassette main body 4 having an opening part, the conversion panel 3 attached to the opening part, and a cover body 2 hermetically sealing the opening part of the main body 4 in which the panel 3 is housed in a light shielding state. In the cassette 1, a permanent magnet 43 is arranged in either the main body 4 or the panel 3, and also a magnetic metallic plate 34 is arranged at a position opposed to the magnet 43 of the panel 3 or the main body 4, and the panel 3 is fixed in the main body 4 by the magnetic force of the magnet 43 and the plate 34. <P>COPYRIGHT: (C)2004,JPO

Description

【００４４】
・マグネット（永久磁石）４３の形状：直径１０ｍｍ、厚さ５ｍｍの円柱状、又は、１０×１０×１ｍｍのシート状
・磁性金属板３４の形状：１０×１０ｍｍ四角、厚さ０．３〜１．０ｍｍ
・引き剥がし力の作用方向：マグネット４３と磁性金属板３４との接触面に直交する方向にバネ秤を作用させて測定した。
【００４５】
実施例１〜５の組合せにおいて、引き剥がし力の最大値は４．９〜１３．７Ｎで、変換パネル３の確実な装着が達成されるとともに、良好な着脱操作性が得られた。
【００４６】
比較例１における両面粘着テープによる貼り付け固定の場合は、変換パネル３をカセッテ本体４に接着した後に、変換パネル３を交換して再装填する事が困難である。比較例２における接着剤による貼り付け固定の場合は、変換パネル３をカセッテ本体４に接着した後に、変換パネル３を交換して再装填する事が不可能である。
【００４７】
［カセッテ本体４と蓋体２との着脱機構］
図２（ｃ）は、係止手段５を備えたカセッテ本体４の斜視図、図６は、その平面図である。
【００４８】
係止手段５は、移動可能な一対の係止部材５１，５２と、係止部材５１，５２を付勢するバネ５３とから成る。係止部材５１はバネ５３に付勢されて、操作部５１Ａ、係止爪部５１Ｂがカセッテ本体４の底面側の外壁部から突出された状態に保持されている。このとき、係止部材５１のラックギア部５１Ｇは、ピニオンギア５４を介して係止部材５２のラックギア部５２Ｇに噛み合い、係止部材５２の係止爪部５２Ｂをカセッテ本体４の上面側の外壁部から突出した状態に保持している。
【００４９】
操作部５１Ａを押圧により、係止部材５１の側部に形成された係止爪部５１Ｃが図６に示す矢印方向に摺動して、蓋体２の切り欠き部２１Ｃとの係止を解除する。同時に、係止部材５２の移動により、切り欠き部５２Ｃが矢印方向に摺動して、蓋体２の切り欠き部２１Ｃとの係止を解除する。また、同時に、係止部材５１にギア接続された係止部材５２が矢印方向に移動して、係止爪部５２Ｂがカセッテ本体４内に引っ込み、蓋体２の切り欠き部２１Ｅとの係止が解除される。
【００５０】
このようにして、操作部５１Ａを押圧により、カセッテ本体４底部の係止爪部５１Ｂ、上部の係止爪部５２Ｂ、側部の係止爪部５１Ｃ，５２Ｃが同時に摺動して、蓋体２との係止が解除される。
【００５１】
［変換パネル３の交換操作］
変換パネル３の交換操作手順を以下に示す。
【００５２】
（１）　カセッテ本体４に配置された操作部５１Ａを押圧する事により、係止爪部５１Ｂ，５２Ｂ，５１Ｃ，５２Ｃが同時に摺動されて、蓋体２との係止が一挙動で解除される。
【００５３】
（２）　操作部５１Ａを押圧した係止解除状態で、蓋体２をカセッテ本体４から取り外す。
【００５４】
（３）　操作部５１Ａの押圧をやめ、変換パネル３の両端部を把持して持ち上げれば、カセッテ本体４に固定された永久磁石４３と、変換パネル３に固定された磁性金属板３４とが磁力結合にうちかって離間、分離される。更に、変換パネル３を把持して持ち上げれば、変換パネル３の位置決めピン３３と、カセッテ本体４の穴部４１との係合が離脱され、変換パネル３の取り出しが可能になる。
【００５５】
（４）　変換パネル３を装着する際には、蓋体２が取り外された状態のカセッテ本体４に、変換パネル３を把持して、カセッテ本体４の開口部上方から、位置決めピン３３がカセッテ本体４の穴部４１に結合するように位置決めして押し込む。この押し込み最終位置において、永久磁石４３と磁性金属板３４との磁力結合により、変換パネル３は、カセッテ本体４に固定される。
【００５６】
（５）　操作部５１Ａを押圧した係止解除状態で、蓋体２をカセッテ本体４に装着した後、操作部５１Ａの押圧を解除すれば、係止爪部５１Ｂ，５２Ｂ，５１Ｃ，５２Ｃが同時に摺動されて、カセッテ本体４と蓋体２とが係止状態に保持される。
【００５７】
なお、操作部５１Ａは係止状態では、蓋体２の底部壁面と同一面、またはやや引っ込んだ位置に配置されているから、カセッテ１を図示しない放射線画像記録読取装置に装着する際に、誤って操作部５１Ａが押されて係止が解除されるおそれはない。
【００５８】
【発明の効果】
以上の説明で明らかなように、本発明により以下の優れた効果が得られる。
【００５９】
（１）　カセッテ本体へ変換パネルを装填するとき、永久磁石と磁性金属板との磁力結合により容易、且つ確実に取り付け可能である。また、変換パネルをカセッテ本体から離脱させるときにも、容易に実行可能である。
【００６０】
（２）　カセッテ本体に配置された操作部を押圧及び解除する事により、カセッテ本体の外周４面の係止爪部が同時に摺動されて、蓋体との係止及び解除が一挙動で解除されるから、蓋体の着脱が迅速に実行可能になり、変換パネルの交換が短時間で容易且つ確実に実施出来る。
【図面の簡単な説明】
【図１】カセッテの斜視図。
【図２】カセッテの分解斜視図。
【図３】カセッテの分解断面図。
【図４】蓋体の平面図及び底面図。
【図５】変換パネルの背面図。
【図６】係止手段を備えたカセッテ本体の平面図。
【符号の説明】
１　カセッテ
２　蓋体
２１　枠体
２１Ａ，２１Ｂ，２１Ｃ，２１Ｄ，２１Ｅ　切り欠き部（被係止部）
２２　遮光板
３　放射線画像変換パネル（変換パネル）
３１　基板
３２　輝尽性蛍光体シート
３３　位置決めピン
３４　磁性金属板
４　カセッテ本体（カセッテバック板）
４１　穴部
４２　両面粘着テープ
４３　永久磁石（マグネット）
５　係止手段
５１，５２　係止部材
５１Ａ　操作部
５１Ｂ，５１Ｃ，５２Ｂ，５２Ｃ　係止爪部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cassette for a radiation image conversion panel used in a radiation image recording and reading apparatus.
[0002]
[Prior art]
Radiation images such as X-ray images are often used for diagnosis of diseases. In order to obtain this X-ray image, X-rays that have passed through the subject are irradiated onto a stimulable phosphor (fluorescent screen), and the resulting visible light is used in the same manner as when a normal photograph is taken using a silver salt. A so-called radiograph which is developed by irradiating a film is used. However, in recent years, a method has been devised for directly taking out an image from a stimulable phosphor without using a film coated with a silver salt.
[0003]
As a method for taking out an image, after the radiation transmitted through the subject is absorbed by the stimulable phosphor, the stimulable phosphor is excited by light or heat energy, and the stimulable phosphor is accumulated. There is a method of emitting radiation energy as fluorescence and detecting and imaging this fluorescence.
[0004]
Specifically, for example, a stimulable phosphor sheet having a stimulable phosphor layer formed on a film support was used in US Pat. No. 3,859,527 and JP-A-55-12144. A radiation image conversion method is described.
[0005]
In these methods, the stimulable phosphor layer of the stimulable phosphor sheet is irradiated with radiation transmitted through the subject to accumulate radiation energy corresponding to the radiation transmission density of each part of the subject, and thereafter the stimulable phosphor layer is irradiated. By exciting the layer in time series with electromagnetic waves (excitation light) such as visible light and infrared light, the radiation energy accumulated in the stimulable phosphor layer is emitted as stimulable luminescence, and the intensity of this light is reduced. Is obtained, for example, by photoelectrically converting the signal to obtain an electric signal, and reproducing the signal as a visible image on a recording material such as a photosensitive film or a display device such as a CRT.
[0006]
According to this radiographic image recording / reproducing method, it is possible to obtain a radiographic image that is rich in information with a much smaller exposure dose than the radiographic method using a combination of a conventional radiographic film and an intensifying screen. There is an advantage that can be.
[0007]
Such a stimulable phosphor is a stimulable phosphor that emits stimulable light when irradiated with radiation and then with excitation light. However, in practice, excitation light having a wavelength in the range of 400 to 900 nm is used. A stimulable phosphor that emits stimulable light in the wavelength range of 300 to 500 nm is generally used.
[0008]
As the stimulable phosphor sheet, a coating type in which a stimulable phosphor layer is applied on a film support is often used because it is easy to handle, easy to produce, and has stable performance.
[0009]
The stimulable phosphor sheet is used as a radiation image conversion panel mounted on a flat plate (tray).
[0010]
The method of using the radiation image conversion panel differs depending on the condition of the medical institution used and the type of the radiation image recording device. For example, in a hospital where many subjects are imaged, a radiation image conversion panel is directly attached to the radiation image recording device, and after imaging, the radiation image recording / reading device incorporated in the radiation image recording device reproduces and saves the image as a visible image. The record of the radiation image conversion panel is erased, and the next subject is photographed. In a hospital where the number of subjects to be imaged is small, a cassette loaded with a radiation image conversion panel is mounted on a radiation image recording / reading device, and after imaging, the cassette is set in the radiation image recording / reading device and reproduced as a visible image. I have. As cassettes used in these radiation image recording and reading apparatuses, for example, cassettes described in JP-A-11-271896 and JP-A-11-271895 are known.
[0011]
Japanese Patent Application Laid-Open No. 11-271896 discloses that a radiation image conversion panel is detachably connected to a cassette having a cassette body and a cap for hermetically closing the cassette body, and is housed in the cassette body. A cassette that locks a cap to a cassette body using a lock mechanism provided inside the cap is disclosed.
[0012]
Conventional methods of using a cassette differ depending on the type of radiation image recording apparatus used. For example, when the radiation image recording apparatus performs only radiation image recording, the radiation image conversion panel is housed in a cassette dedicated to radiation image recording, and after recording the radiation image, the radiation image is converted to the cassette in a dark room to read the radiation image. The panel is moved, loaded into the radiation image recording and reading device, and used for reading only.
[0013]
When the radiation image recording apparatus has a radiation image recording function and a radiation image recording / reading function, the radiation image conversion panel is housed in a cassette in a bright room, loaded into the radiation image recording apparatus, and the radiation image recording and image recording operation is performed. Used for record reading. Usually, when a radiation image recording apparatus has a radiation image recording function and a radiation image recording / reading function, it is necessary to prepare a plurality of cassettes equipped with a radiation image conversion panel in order to exchange a cassette for each photographing and perform photographing. is there.
[0014]
The storage of the radiation image conversion panel in the cassette after image recording is performed through the following steps.
[0015]
(1) Unlock the cap locked on the cassette body by hand using a jig and remove the cap.
[0016]
(2) A radiation image conversion panel on which an image has been recorded is connected to the cap.
(3) The radiation image conversion panel having the image recorded thereon connected to the cap is stored in the cassette body.
[0017]
(4) Release the latch means by hand using a jig, and lock the cap to the cassette body. The above series of operations is performed in a dark room.
[0018]
The loading of the unphotographed radiation image conversion panel into the cassette is performed through the following steps.
[0019]
(1) Unlock the cap locked on the cassette body by hand using a jig and remove the cap.
[0020]
(2) The cap is connected to the unphotographed radiation image conversion panel.
(3) The radiation image conversion panel connected to the cap is housed in the cassette body.
[0021]
(4) Release the latch means by hand using a jig, and lock the cap to the cassette body. The above series of operations are performed in a light room.
[0022]
Since both the lock release operation and the release of the latch means must be performed by inserting a thin rod into the hole opened on the side surface of the cap frame, it takes a very long time and one of the causes of a decrease in work efficiency. It has become. Particularly in the case of work in a dark room, it takes more time and the work efficiency is reduced.
[0023]
Under these circumstances, there is a demand for the development of a cassette that can easily replace a radiation image conversion panel in a short time without being affected by a work environment.
[0024]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a cassette that can easily and reliably replace and attach a radiation image conversion panel to a cassette in a short time.
[0025]
[Means for Solving the Problems]
The above object of the present invention has been achieved by the following constitutions.
[0026]
(1) A cassette body having an opening on the entire surface with respect to the radiation image conversion panel surface, a radiation image conversion panel attached to the opening, and an opening of the cassette body for housing the radiation image conversion panel in a light-shielding state. In a radiation image conversion panel cassette comprising a lid to be sealed, a permanent magnet is arranged on one of the cassette main body and the radiation image conversion panel, and the radiation image conversion panel or the permanent magnet of the cassette main body is disposed on the permanent magnet of the cassette main body. A magnetic metal plate is disposed at an opposing position, and the radiation image conversion panel is fixed to a predetermined position of the cassette body by a magnetic force of the permanent magnet and the magnetic metal plate. Cassette.
[0027]
(2) The cassette body having an opening on the entire surface with respect to the radiation image conversion panel surface, the radiation image conversion panel mounted in the opening, and the opening of the cassette body for storing the radiation image conversion panel in a light-shielding state. In a cassette for a radiation image conversion panel comprising a lid to be sealed, a locking means movably disposed on the cassette main body, and a locked portion formed on the lid, the lid being attached to the cassette main body. Locking and holding, and moving the locking means to the cassette main body by the operation unit to release the lock of the lid with the locked part, and enabling the lid to be detached from the cassette main body. A cassette for a radiation image conversion panel, comprising:
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment according to the present invention will be described with reference to FIGS. 1 to 6, but the present invention is not limited to this.
[0029]
FIG. 1 is a perspective view of a cassette 1 of the present invention, FIG. 2 is an exploded perspective view of the cassette 1, and FIG.
[0030]
The cassette 1 includes a cassette body 4, a radiation image conversion panel (hereinafter, referred to as a conversion panel) 3, and a lid 2.
[0031]
[Lid 2]
2A is a perspective view of the lid 2, FIG. 3A is a cross-sectional view of the lid 2 taken along the line AA, FIG. 4A is a plan view of the lid 2, and FIG. FIG. 2 is a bottom view of FIG.
[0032]
The lid 2 is formed by fixing a light shielding plate 22 for blocking X-rays to a frame 21 having a frame shape.
[0033]
A notch (locked portion) 21A formed in the bottom surface of the frame 21 is provided with an operating portion 51A of a locking member 51 movably supported by the cassette body 4 described later, and is slidably retractable. Move. A notch (locked portion) 21B formed at two places on the bottom surface of the frame 21 is locked and released by a locking claw 51B of a locking member 51 to be described later protruding and retractably sliding. I do.
[0034]
A notch (locked portion) 21C formed in one side surface of the frame 21 slides with a locking claw 51C of a locking member 51 described later. A notch (locked portion) 21D formed in the other side surface of the frame body 21 is locked and released by a locking claw 52C of a locking member 52 described later sliding.
[0035]
Notch portions (locked portions) 21E formed in two places on the upper surface of the frame body 21 are locked and released by slidingly engaging a locking claw portion 52B of a locking member 52 to be described later.
[0036]
[Conversion panel 3]
FIG. 2B is a perspective view of the conversion panel 3, FIG. 3B is a cross-sectional view taken along line A-A of the conversion panel 3, and FIG. 5 is a rear view of the conversion panel 3.
[0037]
The conversion panel 3 includes a substrate 31 and a stimulable phosphor sheet 32. On the front side of the substrate 31, a stimulable phosphor sheet 32 is sealed in a vacuum state and adhered thereto. On the rear side of the conversion panel 3, a plurality of (three as shown in FIG. 5) positioning pins 33 are implanted. These positioning pins 33 are respectively fitted into a plurality of (three as shown in FIG. 6) holes 41 formed in the cassette body 4, and the conversion panel 3 is installed at a predetermined position of the cassette body 4.
[0038]
Since the positioning pins 33 implanted in the conversion panel 3 are formed of a magnetic metal body or a magnet, if the positioning pins 33 are inserted into the holes 41 formed in the cassette body 4, the conversion panel 3 and the cassette are formed. The main body 4 is connected.
[0039]
A plurality of (six as shown in FIG. 5) magnetic metal plates 34 are bonded to the back side of the conversion panel 3. These magnetic metal plates 34 are arranged at positions corresponding to permanent magnets (also referred to as magnets) 43 adhered to the cassette body 4 via a double-sided adhesive tape 42.
[0040]
The conversion panel 3 is gripped and lowered from above the cassette body 4, the positioning pins 33 are fitted into the holes 41 of the cassette body 4 and positioned. Close to 34, the conversion panel 3 is coupled to the cassette body 4 by the magnetic force of the permanent magnet 43.
[0041]
The three positioning pins 33 projecting to the back side of the conversion panel 3 form a gap between the conversion panel 3 and the desk top surface when the conversion panel 3 is placed on a desk or the like. There is an advantage that the gripping operation becomes easy.
[0042]
[Example of magnetic coupling]
a. Types of permanent magnet 43-neodymium magnet (Nd-Fe-B)
・ Samarium magnet (Sm-Fe-N)
・ Samarium cobalt magnet (Sm-Co)
b. Magnetic metal plate 34
・ Steel sheet treated with SECC and SPCC standards ・ Steel ferrite stainless steel sheet (SUS410, 430, 440, etc.)
・ Duplex stainless steel sheet (SUS329J1, 329J4L, etc.)
c. The magnetic force (peeling force) after the combination of the permanent magnet 43 and the magnetic metal plate 34 is 2 N (Newton) or more and less than 30 N is optimal. D. Experimental Results of Peeling Force Table 1 shows the experimental results of the peeling force of the combination of the permanent magnet 43 and the magnetic metal plate 34.
[0043]
[Table 1]

[0044]
-Shape of the magnet (permanent magnet) 43: cylindrical shape with a diameter of 10 mm and a thickness of 5 mm, or a sheet shape of 10 x 10 x 1 mm-Shape of the magnetic metal plate 34: a square of 10 x 10 mm, thickness of 0.3 to 1 0.0mm
-Direction of action of the peeling force: measured by applying a spring balance in a direction perpendicular to the contact surface between the magnet 43 and the magnetic metal plate 34.
[0045]
In the combination of Examples 1 to 5, the maximum value of the peeling force was 4.9 to 13.7 N, and the secure attachment of the conversion panel 3 was achieved, and good attachment / detachment operability was obtained.
[0046]
In the case of sticking and fixing with a double-sided adhesive tape in Comparative Example 1, it is difficult to replace the conversion panel 3 and reload it after bonding the conversion panel 3 to the cassette body 4. In the case of sticking and fixing with an adhesive in Comparative Example 2, it is impossible to replace the conversion panel 3 and reload it after bonding the conversion panel 3 to the cassette body 4.
[0047]
[Attachment / detachment mechanism between cassette body 4 and lid 2]
FIG. 2C is a perspective view of the cassette main body 4 provided with the locking means 5, and FIG. 6 is a plan view thereof.
[0048]
The locking means 5 includes a pair of movable locking members 51 and 52 and a spring 53 for urging the locking members 51 and 52. The locking member 51 is urged by a spring 53, and the operating portion 51A and the locking claw portion 51B are held in a state of protruding from the outer wall portion on the bottom side of the cassette body 4. At this time, the rack gear portion 51G of the locking member 51 meshes with the rack gear portion 52G of the locking member 52 via the pinion gear 54, and the locking claw portion 52B of the locking member 52 is connected to the outer wall portion on the upper surface side of the cassette body 4. It is held in a state protruding from
[0049]
When the operating portion 51A is pressed, the locking claw 51C formed on the side of the locking member 51 slides in the direction of the arrow shown in FIG. 6 to release the locking of the lid 2 with the notch 21C. I do. At the same time, the movement of the locking member 52 causes the notch 52C to slide in the direction of the arrow, thereby releasing the locking of the lid 2 with the notch 21C. At the same time, the locking member 52 gear-connected to the locking member 51 moves in the direction of the arrow, and the locking claw 52B retracts into the cassette body 4 to lock the notch 21E of the lid 2 with the notch 21E. Is released.
[0050]
In this manner, when the operating portion 51A is pressed, the locking claw portion 51B at the bottom of the cassette body 4, the locking claw portion 52B at the top, and the locking claw portions 51C and 52C at the side slide simultaneously, and the lid body 2 is released.
[0051]
[Exchange operation of conversion panel 3]
The procedure for replacing the conversion panel 3 will be described below.
[0052]
(1) By pressing the operating portion 51A disposed on the cassette body 4, the locking claws 51B, 52B, 51C, 52C are simultaneously slid, and the locking with the lid 2 is released in one behavior. You.
[0053]
(2) The lid 2 is removed from the cassette body 4 in the unlocked state in which the operation portion 51A is pressed.
[0054]
(3) When the pressing of the operation unit 51A is stopped and both ends of the conversion panel 3 are gripped and lifted, the permanent magnet 43 fixed to the cassette body 4 and the magnetic metal plate 34 fixed to the conversion panel 3 are separated. Separated and separated due to magnetic coupling. Further, when the conversion panel 3 is gripped and lifted, the engagement between the positioning pins 33 of the conversion panel 3 and the holes 41 of the cassette body 4 is released, and the conversion panel 3 can be taken out.
[0055]
(4) When the conversion panel 3 is mounted, the conversion panel 3 is gripped by the cassette body 4 with the lid 2 removed, and the positioning pins 33 are moved from above the opening of the cassette body 4 to the cassette body 4. 4 and press it in place. At the final position of the pushing, the conversion panel 3 is fixed to the cassette body 4 by magnetic coupling between the permanent magnet 43 and the magnetic metal plate 34.
[0056]
(5) After the lid 2 is mounted on the cassette body 4 in the unlocked state in which the operating portion 51A is pressed, if the pressing of the operating portion 51A is released, the locking claws 51B, 52B, 51C, 52C are simultaneously opened. The cassette body 4 and the lid 2 are slid and are held in a locked state.
[0057]
In the locked state, the operation unit 51A is disposed on the same plane as the bottom wall surface of the lid 2 or at a slightly retracted position. Therefore, when the cassette 1 is mounted on a radiation image recording and reading device (not shown), Therefore, there is no danger that the operation unit 51A will be pressed to release the lock.
[0058]
【The invention's effect】
As is clear from the above description, the following excellent effects can be obtained by the present invention.
[0059]
(1) When the conversion panel is loaded on the cassette body, it can be easily and reliably mounted by the magnetic coupling between the permanent magnet and the magnetic metal plate. Also, when the conversion panel is detached from the cassette main body, it can be easily executed.
[0060]
(2) By pressing and releasing the operating portion arranged on the cassette body, the locking claws on the outer peripheral four surfaces of the cassette body are simultaneously slid, and the locking and release with the lid are released in one action. Therefore, attachment and detachment of the lid can be quickly performed, and exchange of the conversion panel can be easily and reliably performed in a short time.
[Brief description of the drawings]
FIG. 1 is a perspective view of a cassette.
FIG. 2 is an exploded perspective view of the cassette.
FIG. 3 is an exploded sectional view of the cassette.
FIG. 4 is a plan view and a bottom view of the lid.
FIG. 5 is a rear view of the conversion panel.
FIG. 6 is a plan view of a cassette body provided with locking means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cassette 2 Lid 21 Frame 21A, 21B, 21C, 21D, 21E Notch (locked part)
22 Shield plate 3 Radiation image conversion panel (conversion panel)
31 substrate 32 stimulable phosphor sheet 33 positioning pin 34 magnetic metal plate 4 cassette body (cassette back plate)
41 Hole 42 Double-sided adhesive tape 43 Permanent magnet (magnet)
5 Locking Means 51, 52 Locking Member 51A Operating Parts 51B, 51C, 52B, 52C Locking Claw

Claims (6)

A cassette body having an opening over the entire surface of the radiation image conversion panel, a radiation image conversion panel attached to the opening, and a lid for sealing the opening of the cassette body that houses the radiation image conversion panel in a light-shielding state In a cassette for a radiation image conversion panel comprising a body,
A permanent magnet is disposed on one of the cassette main body and the radiation image conversion panel, and a magnetic metal plate is disposed on the radiation image conversion panel or the cassette main body at a position facing the permanent magnet, and the permanent magnet is disposed. A radiation image conversion panel fixed to a predetermined position of the cassette body by a magnetic force between the radiation image conversion panel and the magnetic metal plate. 2. The cassette for a radiation image conversion panel according to claim 1, wherein the permanent magnet is fixedly arranged on the cassette body, and a magnetic metal plate is fixedly arranged on a substrate on the radiation non-irradiation side of the radiation image conversion panel. 3. . The cassette for a radiation image conversion panel according to claim 1, wherein the cassette main body and the radiation image conversion panel are positioned by a plurality of positioning pins and a hole fitted to the positioning pin. 4. The method according to claim 3, wherein a plurality of positioning pins are implanted on the substrate on the radiation non-irradiation side of the radiation image conversion panel, and a hole is formed in the cassette body so as to fit the pins. Cassette for radiation image conversion panel. The cassette for a radiation image conversion panel according to claim 3, wherein the positioning pin is formed of a magnetic metal body or a magnet. A cassette body having an opening over the entire surface of the radiation image conversion panel, a radiation image conversion panel attached to the opening, and a lid for sealing the opening of the cassette body that houses the radiation image conversion panel in a light-shielding state In a cassette for a radiation image conversion panel comprising a body,
Locking means movably disposed on the cassette body, and a locked portion formed on the lid, locking and holding the lid on the cassette body,
A radiographic image, wherein the locking means is moved to the cassette main body by an operation unit to unlock the lid with the locked part, and the lid can be detached from the cassette main body. Cassette for conversion panel.

Images