JPH043146A - Cassette for accumulation type fluorescent material sheet - Google Patents

Abstract

PURPOSE:To allow the smooth leading in and out of an accumulation type fluorescent material sheet by building a means for leading in and out the sheet into the cassette. CONSTITUTION:The cassette 10 has a housing 14 which forms a chamber 12 for housing the accumulation type fluorescent material sheet S, an aperture 16 which is provided on one side face of the housing 14 and communicates with the chamber 12 in order to lead out and in the sheet S, small roller bodies 18 and 20 and gears 22 and 24, 25 for crimping which is provided between the chamber 12 and the aperture 16 so as to face this aperture 16 and are supported on both side faces of the housing 14, a stopper 26 which prevents the operation by detaining the gear 22 on one end side of the roller 18 at the time of housing of the sheet S, and a flexible light shielding member 30 which shields the aperture 16 and is easily deformed. The means for leading in and out the accumulation type fluorescent material sheet is built near the aperture part where the sheet passes in such a manner, by which the easy and smooth leading in and out of the sheet is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a cassette which is a storage container for a stimulable phosphor sheet, and more particularly to a cassette having a built-in means for taking out and taking out the stimulable phosphor sheet.

<Prior art and its problems> As a method of obtaining a radiographic image as an image, a so-called radiographic system has traditionally been used, which uses a combination of a radiographic film having an emulsion layer made of a silver salt photosensitive material and an intensifying screen. ing. Recently, a radiation image information recording and reproducing system using a stimulable phosphor has come into use as an alternative to the radiographic system.

Here, stimulable phosphor refers to radiation (X-rays, β-rays, β-rays,
When irradiated with γ-rays, electron beams, ultraviolet rays, etc., a part of the energy of this radiation is accumulated, and then when excited light such as visible light is irradiated, it emits stimulated light according to the accumulated energy. A phosphor that exhibits

Using this stimulable phosphor, radiation image information of a subject such as a human body can be transferred to a sheet (with a layer of stimulable phosphor) (
The sheet is stored and recorded on a stimulable phosphor sheet (hereinafter referred to as a ``stimulable phosphor sheet'' or simply ``sheet''), and this sheet is scanned with excitation light to cause stimulated luminescence, and the resulting stimulated luminescent light is read by an optical element and converted into an electrical signal. A radiographic image information recording and reproducing system has been proposed that converts the image signal to obtain a radiographic image signal and processes this image signal to obtain a radiographic image of the subject with good diagnostic suitability (for example, Japanese Patent Laid-Open Nos. 55-12429 and 1983-1989). No. 11395,
No. 55-163472, No. 56-104645, No. 55-116340, etc.).

In such a radiation image information recording and reproducing system,
An image reading device that reads a radiation image from a stimulable phosphor sheet on which the radiation image has been stored and recorded specifically reads the radiation image by the following method.

In other words, a stimulable phosphor sheet is scanned two-dimensionally with a light beam such as a laser beam, and the stimulated luminescence light emitted by this is detected in time series with a photodetector such as a photomultiplier to obtain image information. get. The two-dimensional scanning of the light beam is performed by mechanically transporting the stimulable phosphor sheet in one direction, and also in a direction perpendicular to the transporting direction of the sheet. This is achieved by performing main scanning by irradiating a light beam that is deflected.

In this case, the stimulable phosphor sheet is housed in a cassette and irradiates the subject with radiation, thereby accumulating and recording a radiation image of the subject on the sheet. Then, the sheet is loaded into the image reading device while being housed in the cassette, and is conveyed from the cassette to a scanning position where the light beam is scanned through a sheet-fed mechanism including a suction cup and the like. Ru.

Therefore, a general configuration of such a cassette is illustrated in FIG.

In FIG. 7, reference numeral 100 indicates a cassette according to the prior art, and this cassette 100 includes a casing 104 defining a chamber 102 in which a stimulable phosphor sheet S is stored, and one end of the casing 104. It includes a lid body 108 that is swingably attached via a hinge 106.

The cassette 100 configured in this way is loaded into the image reading device 110, for example, and the cassette 100 is loaded into the image reading device 110.
The chamber 102 is opened in the image reading device 110 by opening the lid 108 via a suction cup 112 provided therein. Next, as shown by the dotted line in FIG. 7, the stimulable phosphor sheet S housed in the housing 104 is held in a ruffled state under the driving action of a single sheet mechanism including a suction cup 14, and transferred to a conveyance mechanism (not shown). The image is sent to the image reading unit via the .

For this purpose, the conventional image reading device 110 has a cassette 1.
A lid opening mechanism including a suction cup 112 for opening the lid 108 of 00, for example, the lid opening mechanism disclosed in Japanese Patent Application Laid-open No. 59-74025 related to this application, and the inside of the cassette 100 with the lid opened. A single-fed mechanism including a suction cup 114 for taking out the sheet S of
A single-wafer mechanism such as that disclosed in Japanese Patent No. 336 is absolutely necessary.

<Problem to be Solved by the Invention> By the way, in the cassette 100 according to the above-mentioned prior art, as shown by the broken line in FIG. It must be removed. That is, this is to prevent the stimulable phosphor sheet S from coming into contact with the open end side wall surface 104a of the housing 104. Therefore, the suction cup 11
There is a problem in that the single-wafer mechanism itself becomes considerably complicated, as disclosed in the above-mentioned Japanese Patent Application Laid-open No. 112336/1984, because it is necessary to displace the blade 4 along a trajectory to provide a desired stirring action.

Furthermore, the lid body 108 swings about one end of the housing 104 as a fulcrum, opening the chamber 102 into the image reading device 110 . Therefore, the space available for opening and closing the lid body 108 within the image reading device 110 becomes large, and the entire cassette 100 is
This image reading device 110
There is also the problem that the device itself becomes large.

Moreover, when reading various stimulable phosphor sheets S of different sizes, a cassette 100 corresponding to each stimulable phosphor sheet S must be prepared.
In this case, the same suction cup 112 can hold each lid 108.
When opening/closing operations are attempted, especially in the case of the small lid body 108 shown by the - dotted chain line in FIG.
08 tends to be oriented vertically and tilted significantly,
As a result, the suction effect by the suction cup 112 is not performed properly, and there is a possibility that the lid body 108 may fall.

Furthermore, as shown in FIG. 7, the image reading device 110 may be loaded with the cassette 100 horizontally, or may be loaded with the cassette 100 oriented vertically downward in accordance with various requests. Some have been configured. In this case, the cassette 100 shown in FIG. 7 cannot be loaded into such an image reading device 110, and the types of devices that can be loaded are restricted, resulting in a problem of poor versatility.

Therefore, in Japanese Patent Application Laid-Open No. 63-103230, the present applicant has proposed a part, for example, half the size of the stimulable phosphor sheet S, as shown in FIG. A cassette 120 is disclosed that has a lid 124 that protrudes toward a housing 122. By using the cassette 120 disclosed herein, the image reading device 1
The space occupied by the feed/load section 127 of 26 can be reduced to some extent, the single sheet mechanism 128 can be simplified to some extent, and the sheets S can be taken out in the vertical direction.

However, even if this cassette 120 is used, the suction cup 130
Although it is simpler than the conventional one, it is necessary to have a lid opening mechanism with a lid opening mechanism.
In order to insert the link 134 into the seat and contact the sheet S,
, 136 and an arm 138, and still requires a single-wafer mechanism 128 that operates in a complicated manner.
The space saving and miniaturization of the image reading device cannot be said to be sufficient, and there is a problem in that the derivation and introduction of the sheet S are not sufficiently simplified.

Furthermore, as shown in FIG. 9, when the cassette 120 is used to allow the stimulable phosphor sheet S to be taken out in the vertical direction due to natural fall, the tip of the sheet S is If the sheet collides with a belt conveyor or the like, the leading end of the sheet may be damaged and may not be able to withstand long-term use.

An object of the present invention is to solve the above-mentioned problems of the prior art, and by incorporating a means for introducing the stimulable phosphor sheet, smooth the introduction and removal of the stimulable phosphor sheet, and to remove the stimulable phosphor sheet from the image reading device. It is an object of the present invention to provide a cassette for a stimulable phosphor sheet, which is capable of downsizing and simplifying a feed/loading section, thereby reducing the size and compactness of the entire image reading device, as well as reducing costs.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a casing that is provided with an opening at one end through which the stimulable phosphor sheet is taken out and taken in, and that houses the stimulable phosphor sheet; The present invention provides a cassette for a stimulable phosphor sheet, characterized in that the cassette includes means for leading out and taking out the stimulable phosphor sheet built into the casing near the opening from the casing.

Preferably, the guide means is a roller.

Preferably, the guide means is a pair of pinching rollers.

It is preferable that the opening has a light shielding means.

It is preferable that a stopper for preventing rotation of the roller is provided near the opening.

Preferably, the stopper is a lid that tightly blocks light from the opening.

<Operation of the Invention> The cassette for a stimulable phosphor sheet of the present invention has a sheet lead-in/out means built-in near the opening through which the stimulable phosphor sheet passes, so that the cassette can be loaded into an image reading device. At this time, the sheets stored in the cassette can be easily and smoothly led to and introduced from the conveying means of the reading device.

Therefore, by using the cassette of the present invention, it is possible to
Since the cassette opening mechanism and the stimulable phosphor sheet sheet-feeding mechanism, which require a large space and are complicated, are not required, the image reading device does not require any space for placing these. The sheet feeding/loading section can be significantly downsized and simplified, and the entire image reading device can be downsized, simplified, and compact, and furthermore, the cost can be reduced.

Further, in the cassette of the present invention, the stimulable phosphor sheet is shielded from light entering from the opening by the light shielding means,
It is fixed in a cassette and stored in a light-tight manner by being held by a guide means, such as a roller with a stopper or a pair of rollers.

<Embodiments> Next, preferred embodiments of the stimulable phosphor sheet cassette according to the present invention will be described in detail with reference to the accompanying drawings.

In Figures 1, 2a, 2b and 2c,
Reference numeral 10 indicates a cassette for a stimulable phosphor sheet of this embodiment. The cassette 10 basically includes a casing 14 defining a chamber 12 for storing a stimulable light sheet S, and a chamber 12 provided on one side of the casing 14 for extracting and introducing the sheet S. A communicating opening 16, a pair of small pinching rollers 18 and 20 facing the opening 16, provided between the chamber 12 and the opening 16, and pivotally supported on both sides of the housing 14;
(See Figure 2c) Gears 22.23 and 24.25 attached to both shaft ends of the roller pairs 18 and 20, and the second C
(see figure), stoppers 26 and 28 that engage the gear 22 at one end of the roller 18 to prevent the pair of rollers 18 and 20 from operating when the sheet S is stored; It has a flexible light shielding member 30 that is easily deformed when the sheet S is taken out and introduced.

In FIG. 2a, an opening 32.33 is provided on the lower surface of the housing 14 at a position corresponding to the gear 22.23, as shown in FIGS. 2b and 2c, and on both sides of this opening 32, a stopper release Holes 34 and 36 are provided.

Here, as shown in FIG. 2c, when the sheets S are introduced and stored in the cassette 10 and when the sheets S stored in the cassette 10 are taken out from the cassette IO,
First, gears 38 and 3 are attached to both ends of a coaxial shaft that is rotationally driven by a drive source (not shown) from outside the cassette.
9 rises and passes through openings 32 and 33, respectively, to mesh with gears 22 and 23. At this time, at the same time, Bin 4
0.42 rises and fits into the stopper release hole 3436 shown in FIGS. 2a and 2b, pushing up the stopper 26.28 and releasing the lock.

Next, when gears 38 and 39 are rotationally driven, gear 38
and 39 rotate gears 22, 23, and the corresponding gears 2
By rotating the roller pair 18 and 20 by rotating the roller pair 4.25, the sheet S held between the roller pair 18 and 20 can be introduced and taken out.

The chamber 12 for storing the seat S may be any space as long as it defines a space in which the seat S can be stored.
If there is a risk of damaging the phosphor side surface of the sheet S due to large movement during transportation of the cassette 1o, the holding member 44 is used to suppress the movement of the sheet S within the cassette 1o and prevent it from shifting or floating. .46 is preferably adhered to the inner surface of the cassette 10. This pressing member 44.4
6 is preferably made of an elastic material such as rubber, urethane, sponge, or styrofoam.

The opening 16 is opened slightly larger than the cross-sectional dimension of the sheet S, so that the sheet S can be easily led out and introduced.

The flexible light-shielding member 30 that covers the opening 16 is not limited to any special number, and may be a black light-shielding curtain that is highly flexible but also has some rigidity, or a material in which a large number of black hair-like bodies are implanted. I can do it.

The pair of rollers 18 and 20 are used to sandwich the stimulable phosphor sheet S and introduce it into the cassette 10, and also to take it out from the cassette 10.Since the pair of rollers 18 and 20 are built into the cassette 10, they are composed of small diameter rollers. It is preferable that the rollers each have one continuous roller as shown in FIG. 2C, or a plurality of small rollers connected together.

A gear 22 provided at the shaft end of the roller 18 and the roller 20
．． 23, 24, and 25 are for rotationally driving the roller pair 18, 20, and although it is not necessarily necessary to provide them at both shaft ends, it is recommended to provide them at both shaft ends in order to suitably nip and convey the sheet S. preferable. However, the configuration may be such that the roller 20 is pressed against the roller 18 side by a biasing means such as a spring, and the roller 20 is caused to follow the roller 18 via the sheet S. In this case, only the gear 22 at the end of the shaft of the roller 18 may be used. In addition,
Any configuration may be used as long as the rotation of the roller 18 can be transmitted to the pair of rollers 20.

The stoppers 26 and 28 engage the gear 22 of one of the rollers 18 to prevent the sheet S from flying out of the cassette 10 due to rotation of the pair of rollers 1820 when the sheet S is stored in the cassette 10. Stop, gear 22
This is to prevent the rotation of the gear 24 that meshes with the gear 24, and the rotation of the pair of rollers 18 and 20.

As mentioned above, when drawing out and introducing the sheet S, the gear 2
Insert the bottles 40 and 42 from outside the cassette into the stopper release holes 34 and 36, respectively, so that the pair of rollers 18 and 20 can be rotated by rotationally driving the rollers 2 and 23 and rotating the meshing gears 24 and 25. and stopper 2
6.28 is configured to release the latching from the gear 22.

Preferably, the stopper 26.28 is biased toward the gear 22 by a biasing means such as a spring so as to engage the gear 22 when the bottle 40.42 is pulled out of the stopper release hole 34.36.

It is not always necessary to use two stoppers 26 and 28 (
The shape and number of the gears are not particularly limited as long as they reliably prevent rotation of the gear 22 when storing the sheet S and do not hinder the rotation of the gear 22 when the sheet S is taken out or taken out.
The method of engaging and releasing the stopper 2628 from the gear 22 is also not particularly limited.

Furthermore, the gears on which the stoppers 26 and 28 act are not limited to the gear 22, but may be other gears.

In the example shown in FIGS. 1 to 2C, the light shielding member 3 is placed in the opening 16.
Although the light is blocked by attaching a cassette 50 shown in FIG. 3, the present invention is not limited to this.
The end face on the side where the sheet S is introduced and taken out may be covered with a cover body 52 that can be opened and closed. At this time, since the cassette 50 shown in FIG. 3 is the same as the cassette 10 shown in FIG. 1 except for the configuration of the end face on the inlet/output side of the sheet S, the same components are given the same numbers and Explanation will be omitted.

Here, as shown in FIG. 3, the lid body 52 is attached to the housing 14 by a hinge 54 so as to be able to open and close, but only through the opening 1.
6, but also prevents the sheet S from flying out from the cassette 10 when the sheet S is stored.
When attaching the lid body 52, it is not necessary to provide the stoppers 26, 28. Moreover, when the lid body 52 is closed, the lid body 52
Means 56 for engaging at least one of the gears 22.23, 24.25, for example a stopper or a protrusion, may be provided on the inner surface of the roller pair 18.20 to prevent rotation of the pair of rollers 18.20.

The method of opening the lid body 52 is not particularly limited (the cassette 1
Raise the bottle at the same time as the gears 38 and 39 outside 0 and lift the lid 5.
In addition to the method of pushing up 2, any conventionally known method can be used.

Here, the structure of the stimulable phosphor sheet S is, as shown in FIG. A protective layer C for physically or chemically protecting the substrate A and a backing layer d provided on the back surface of the support a are laminated together (for example,
(See Japanese Patent Application Laid-open No. 146447/1983).

In this case, the support a is made of an organic polymer material such as polyethylene terephthalate, paper, etc., and the phosphor layer is made of a binder made of an organic polymer material such as nitrocellulose, and is dispersed in this binder. It is made up of stimulable phosphor particles. Furthermore, the protective layer C includes polyethylene terephthalate, polyethylene, polyvinylidene chloride,
It is formed of a film of polyamide or a cellulose derivative, and the back layer d is preferably made of polypropylene or the like. In addition, in the stimulable phosphor sheet S, the part where image information is substantially recorded is called an image recording area e (within the area indicated by the dotted line in FIG. 4), and this area e is not particularly restrictive; Although it may be the entire surface of S, when it is stored in the cassette of the present invention and is held between the lead-in/out roller pair 18.degree. 20, it is preferably a portion other than the image recording area e.

Although the cassette for stimulable phosphor sheets of the present invention is basically constructed as described above, an image reading device in which the cassette for stimulable phosphor sheets of the present invention is used is conceptually shown in FIGS. 5 and 6. As shown in the figure.

The image reading device 60 shown in these figures includes a cassette holding section 62 that removably holds a cassette 50 for a stimulable phosphor sheet of the present invention shown in FIG. The device is equipped with a reading section 64 and an erasing section 66 that erases the image information remaining on the sheet S after reading is completed. A sheet conveying means 72 consisting of a conveying roller 68 and an endless belt 70 is provided to convey the sheet.

In an external photographing device (not shown), the cassette 50 in which the sheet S stored therein has been photographed is loaded into the cassette holding section 62 in a horizontal direction as shown by the arrow in the figure. The cassette 50, as shown in FIG. When loaded into the holding portion 62, the lid body 52 is rotated and opened by a lid opening means (not shown) from the closed position shown by the broken line in the figure to the open position shown by the solid line in the figure. .
A pair of rollers 18.2 in the cassette 50 is provided in the cassette holding section 62 for introducing and taking out the sheets S from the cassette 50.
Gears 38 and 39 which mesh with the gears 22 and 23 of 0 are provided coaxially.

Gears 38 and 39 operate when the cassette 50 reaches the loading position.
It is inserted into the opening 32.32 made in the cassette 50,
It moves from the first position shown by the broken line in the figure to the second position shown by the solid line in the figure, meshes with the gears 22 and 23, and rotates them.

At the same time, the gears 24 and 25 that mesh with the gears 22 and 23 rotate, so the pair of rollers 18 and 20 that hold the sheet S together rotates.
rotates and takes out the sheet S from the cassette 50.

The sheet S drawn out from the cassette 50 loaded in the cassette holding section 62 is passed to conveying rollers 68, 68, then placed on the endless belt 70 and carried into the reading section 64.

The reading unit 64 reads a sheet S on which one image information is accumulated and recorded.
is scanned with an excitation light 74a such as a laser beam emitted from a laser light source 74, and the stimulated luminescence light emitted from the sheet S by the scanning is photoelectrically read by a long photomultiplier 76, which is a photoelectric reading means. This is to obtain an electrical image signal for outputting a visible image.

In the figure, 78 is a light deflector such as a galvanometer mirror, 80 is a scanning lens such as an fθ lens, and 82 is an excitation light 74a.
This is a long reflecting mirror that reflects the light and makes it incident on the sheet S. The elongated photomultiplier 76 may have, for example, a so-called Bo-Sox type electrode structure.

Note that using a long photomultiplier as described above as the photoelectric reading means is extremely effective in downsizing the reading section 64, but as the photoelectric reading means, a conventionally known transparent light guide can be used. It is also possible to use a reading means, a line sensor, or the like that transmits stimulated luminescence light to a relatively small photomultiplier via a photomultiplier. In addition to the box type, the long photomultiplier is equipped with a multiplier section consisting of a Venetian blind type ring or other types of electrodes known in the art, or a multiplier section formed by combining a plurality of types of electrodes. It is also possible to form it by extending a photomultiplier.

As shown in FIG. 6, the sheets S are conveyed in the six directions of arrows by the pair of input/output rollers 1820 and the sheet conveyance means 72 from the output person's position P where the cassette 50 is loaded into the cassette holder 62 and the lid is opened. , reading starts when the leading edge (with respect to the direction of arrow A) reaches the scan start position P2, and when it reaches the scan end position P, the rear end of the sheet S has reached the position P2 and the reading ends. When performing two readings, pre-reading and main reading, the sheet conveying means 72 may switch back the sheet S between positions P2 and P8 to return the leading edge of the sheet S to position P2.

In this image reading device 60, even when the leading edge of the sheet S reaches the reading start position P2, it remains near the rear end, and the inside of the cassette 50 can be used as part of the conveyance path, so that the device can be made compact.

The sheet S whose image information has been read in the reading section 64 is further conveyed in the six directions of arrows by the endless belt 70, and is conveyed to the erasing section 66 and reaches the erasing position P4.

The erasing section 66 is provided below the optical path of the light beam emitted from the laser light source 74, adjacent to the reading section 64,
The arrangement is such that erasing can be performed without increasing the size of the device.

The eraser 66 is for erasing the radiation image information remaining in the sheet S after the above-mentioned reading is completed (for emitting the radiation energy remaining in the accumulative tendency body). The erased sheet S is reused. The erasing method in this erasing section 66 may be any method. The eraser 66 in the illustrated device includes a fluorescent lamp, a tungsten lamp, a sodium lamp, a xenon lamp,
A plurality of erasing light sources such as iodine lamps are provided, and the sheet S reaches below these erasing light sources (the leading edge of the sheet S is at the erasing position P4), and the sheet S is irradiated with light by these erasing light sources 84. The remaining radiation energy is released. Note that the erasing light source 84 is turned on only when the sheet S is in the erasing section 66, and when the sheet S is in the erasing section 66,
Since it is erased when S is in the reading section 64, the erasing light source 84 does not adversely affect the reading.

The sheet S that has been erased is conveyed in the direction of arrow B by rotating the endless belt 70 in the reverse direction, and is passed to the conveyance roller 68. The sheet S is further transported by this conveying roller 6.
8 to roller pair 18.20 in cassette 50.

The roller pair 18.20 is rotated in the opposite direction by the drive gear 38.39 rotating in the opposite direction to when the sheet is taken out, and the sheet S
completely into the cassette 50. When the sheet S is completely stored in the cassette 50, the gears 38 and 39 disengage from the gears 22 and 23, and the sheet S is pulled out from the opening 32 and 33.
At the same time, the lid 52 of the cassette 50 is also returned to the closed position, and the cassette 50 is pulled out from the cassette holder 62.

By using the stimulable phosphor sheet cassette of the present invention, it is possible to downsize and simplify the feed/load section for guiding and introducing sheets in an image reading device. As shown in the figure, the image reading device can be made compact, and the entire device can be made smaller and lower in cost.

The image reading device to which the cassette for stimulable phosphor sheets of the present invention is applied is not limited to the illustrated example, and may be equipped with a plurality of cassettes and handle a plurality of stimulable phosphor sheets. However, it may be an image recording/reading device having an image recording section.

<Effects of the Invention> As described in detail above, according to the present invention, the stimulable phosphor sheet can be smoothly guided and introduced by the built-in guide means, so that the feed of an image reading device, etc. - The load section can be made smaller and simpler.

Therefore, the entire image reading device can be made smaller and more compact, and furthermore, the cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of a cassette for a stimulable phosphor sheet according to the present invention. 2a, 2b and 2c are a side sectional view, a bottom view and a front sectional view of the cassette shown in FIG. 1, respectively. FIG. 3 is a side sectional view of another embodiment of a cassette for a stimulable phosphor sheet according to the present invention. FIG. 4 is a perspective view of one embodiment of a stimulable phosphor sheet used in the present invention. 5 and 6 are a perspective view and a conceptual side view showing an outline of a radiation image information reading apparatus to which the cassette for stimulable phosphor sheets of the present invention is applied. FIG. 7, FIG. 8, and FIG. 9 are explanatory views showing the schematic structure and operation of a conventional cassette for stimulable phosphor sheets, respectively. Explanation of symbols 10...Cassette for stimulable phosphor sheet, 12...
Chamber, 14... Housing, 16.32.34... Opening, 18.20... Roller pair, 22.23, 24.25... Gear, 26.28... Stopper, 30. ...Light shielding member, 34.36...Stopper release hole FIG FIG, 4 FIG, 7 FIG, 8 FIG, 9

Claims (1)

[Claims] (1) A housing that has an opening at one end for introducing and taking out the stimulable phosphor sheet and stores the stimulable phosphor sheet, and a casing that contains the stimulable phosphor sheet in the vicinity of the opening in the housing. A cassette for a stimulable phosphor sheet, characterized in that it has means for leading out and taking out from the casing.