JPH0829879B2 - Accumulation tray for stimulable phosphor sheets - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a stacking tray of stimulable phosphor sheets, and more specifically, when accumulating stimulable phosphor sheets on a tray, the surface of the stimulable phosphor sheet is scratched or scratched. The present invention relates to a stacking tray for accumulative phosphor sheets which is configured so that the above phenomenon does not occur.

Recently, a radiation image information recording / reproducing system that obtains a radiation image of a subject using a stimulable phosphor has attracted attention.
Here, the stimulable phosphor means radiation (X-ray, α-ray, β-ray,
γ-rays, electron beams, ultraviolet rays, etc.) accumulates a part of this radiation energy, and a phosphor that emits stimulated emission light according to the accumulated energy by irradiating excitation light such as visible light later Say.

The above-mentioned radiation image information recording / reproducing system uses this accumulative phosphor. First, a sheet having a layer made of an accumulative phosphor is used to temporarily store radiation image information of a subject such as a human body. Fluorescent sheet "or simply" sheet "). Then, this stimulable phosphor sheet is scanned with excitation light such as laser light to generate stimulated emission light, and an image signal is obtained by photoelectrically reading the obtained stimulated emission light, and this image signal is Based on this, a radiation image of the subject is output as a visible image on a recording material such as a photographic light-sensitive material or a CRT. Incidentally, this kind of technique is disclosed in JP-A-55-12429 and JP-A-56-11395.

By the way, this system has a practical advantage that an image can be recorded over a very wide radiation exposure area as compared with a conventional radiographic system using an intensifying screen and an X-ray film. That is, in the stimulable phosphor, it has been recognized that the amount of emitted light that is stimulated and emitted by excitation after storage is proportional to a radiation exposure amount over an extremely wide range.

Therefore, even if the radiation exposure amount changes considerably due to various imaging conditions, the light amount of the emitted light is read by the photoelectric conversion means and read by the photoelectric conversion means to be converted into an electric signal. By using the to output a visible image on a recording material such as a photographic light-sensitive material or a display device such as a CRT, it is possible to obtain a radiation image that is not affected by fluctuations in radiation exposure.

Further, according to this system, after converting the radiation image information accumulated in the stimulable phosphor into an electric signal, appropriate signal processing is performed, and using this electric signal, a recording material such as a photographic light-sensitive material, a CRT, etc. It is also possible to output a visible image to the display device, and thereby a radiation image excellent in observation and interpretation suitability (diagnosis suitability) can be obtained, which is also extremely effective.

In such a radiation image information recording / reproducing system, the stimulable phosphor sheet does not store the image information but temporarily holds the radiation image information in order to finally give the image to the recording medium as described above. Therefore, the stimulable phosphor sheet may be repeatedly used, and if it is repeatedly used in this way, it is extremely economical and convenient.

Therefore, in order to reuse the stimulable phosphor sheet, the radiation energy remaining in the stimulable phosphor sheet after being read by the irradiation of the excitation light is emitted by the irradiation of the light to cause the afterimage radiation image information. Is erased and this stimulable phosphor sheet may be used again for recording a radiation image.

A technique for erasing the radiation energy remaining on the stimulable phosphor sheet by irradiating light is disclosed in, for example, Japanese Patent Laid-Open No. 56-11392.

Therefore, as described above, in order to erase the residual image information, it is possible to irradiate the erasing light with high illuminance evenly for the next image recording, and the accumulative phosphor sheet is directly It is used for recording a radiographic image or is temporarily housed in a tray and stands by for the next recording of a radiographic image.

By the way, when a radiation image is recorded, various types and sizes of accumulative phosphor sheets are used due to differences in the imaged site, imaged area, etc. of the subject. For storage, it is desirable that accumulative phosphor sheets of the same type or the same size are contained in the same tray. For this reason, after the radiation image is recorded, the stimulable phosphor sheet on which the reading by irradiation of the excitation light and the deletion of the afterimage information by the irradiation of the erasing light are performed is the same for each type or size by the sorting device. Sorted and transported to the tray. In this sort of sorting apparatus, a plurality of trays are arranged so as to be inclined according to the type or size of the stimulable phosphor sheet in order to make the apparatus compact, and a carry-in mechanism such as rollers is provided above these trays. Provided and configured to accumulate the stimulable phosphor sheet in a given tray.

Therefore, after the accumulative phosphor sheet is carried into the tray by the carry-in mechanism and the rear end of the accumulative phosphor sheet is separated from the carry-in mechanism, the accumulative phosphor sheet falls by its own weight and remains in the tray. It is collected at a predetermined position. At this time, since the surface of the stimulable phosphor sheet is easily scratched, the sheet to be carried into contact with the inner edge of the upper end of the side wall of the tray, and the surface is scratched. In particular, when the stimulable phosphor sheet accumulated by using the suction means such as a suction cup is taken out from the tray and the next radiation image is recorded, the stimulable fluorescence sheet is scratched by the suction means. To prevent
The image-recording surface side of the stimulable phosphor sheet is placed downward, and in such a case, the image-recording surface of the stimulable phosphor sheet is placed inside the tray side wall upper end. Since it comes into sliding contact with the edge, scratches are generated on the image recording surface, and the image quality of the image obtained by subsequent radiation image recording and reproduction is deteriorated.
Since the accumulative phosphor sheet is used repeatedly as described above, the occurrence of scratches is a serious problem.

When accumulating the stimulable phosphor sheets, the tray may be arranged horizontally, and the stimulable phosphor sheets may be carried into the tray by the carry-in mechanism from the lateral direction and accumulated. In such a case, In addition, since the rear end of the stimulable phosphor sheet is dropped by its own weight and accumulated in the tray, the abrasion of the stimulable phosphor sheet due to the inner edge of the upper side wall of the tray is still a problem.

Therefore, the present invention has been made in view of the above problems,
An object of the present invention is to provide an accumulating phosphor sheet accumulating tray capable of smoothly accommodating the accumulating phosphor sheet with a simple structure without causing scratches on the surface thereof.

In order to achieve the above-mentioned object, the present invention is provided with a plurality of juxtaposed with a large inclination with respect to the vertical direction, and the feeding mechanism of the carrying-in mechanism which is freely accessible to the upper part of each of them causes the accumulative phosphor sheet to drop by its own weight. A stacking tray of accumulative phosphor sheets for selectively stacking sheets one by one inside, wherein the tray is a sheet storage by a bottom plate on which the sheets are stacked and side walls provided on the bottom plate. A portion of the upper side wall when the sheet is carried into the sheet storage section from the upper side wall side, in the vicinity of the upper side wall that is located upstream in the sheet conveying direction and intersects the sheet conveying direction. A guide member for guiding the sheet is provided so as to prevent contact with the inner edge of the opening end, and the guide member includes a layer body softer than the sheet. And wherein the door.

In the present invention, it is needless to say that the guide member is provided in the vicinity of the tray side wall in the case where the guide member is provided in the vicinity of the tray side wall without contacting the tray side wall, and at least a part of the guide member is provided. Is also provided in contact with the side wall of the tray.

Next, the accumulation tray of the stimulable phosphor sheet according to the present invention will be described in detail below with reference to the accompanying drawings with reference to preferred embodiments.

First, a radiation image information reading apparatus in which an accumulating fluorescent sheet accumulating tray according to the present invention is used will be described below with reference to FIG. This apparatus is basically composed of a radiation image information reading unit 10, an erasing unit 42 integrated with the reading unit 10, a transport unit 52, and a sorting unit 60.
Consists of

The reading unit 10 generally includes a light guide sheet 12, a photomultiplier 14, a laser light source 16, and a galvanometer mirror 18.
Includes an optical surface plate 20 for supporting the hollow shape. In order to convey the stimulable phosphor sheet 22 to the light guide sheet 12 side, the first
The belt conveyor 24 is disposed, and the outlet side of the first belt conveyor 24 is disposed in series with the second belt conveyor 26 provided directly below the light guide sheet 12.
The nip roller 28 for receiving the stimulable phosphor sheet 22 is provided on one roller of the second belt conveyor 26.
Is arranged.

Further, the second belt conveyor 26 faces the third belt conveyor 30 whose output side is bent, and the third belt conveyor 30 has a first roller group 32 at the bent portion. Further, a fourth belt conveyor 34 is disposed in sliding contact with the third belt conveyor 30 which is bent and extends forward. The third belt conveyor 30 and the fourth belt conveyor 34 are provided.
A first guide member 36 is disposed immediately above the.

The first guide member 36 faces the second guide member 40 via a pair of rollers 38. Substantially, this second guide member 40 is attached to the erasing unit 42. That is, a part of the fifth belt conveyor 44 is provided opposite to the second guide member 40, and as a whole, the fifth belt conveyor 44 is located below the housing 46 that constitutes the erasing unit 42 for erasing the residual image. Enter. In this case, the erasing unit 42 includes the erasing light sources 45a to 45d therein.

Next, a sixth bending belt conveyor 48 is disposed immediately above the fifth belt conveyor 44 and the second guide member 40. The sixth bending belt conveyor 48 is in contact with the sixth bending belt conveyor 48 and is further bent.
The belt conveyor 50 is provided. 6th belt conveyor
The outlet side of 48 and the seventh belt conveyor 50 faces the transport unit 52 that sorts and transports the stimulable phosphor sheet 22, for example, according to its size. As will be described later, the transport unit 52 has an eighth belt conveyor 54 and a ninth belt conveyor 56 slidably in contact therewith, and the transport unit 52 itself, as shown by the arrow, is horizontal in the drawing. It can be self-propelled in the direction. A sorting unit 60 including a plurality of trays 58 is arranged below the transport unit 52. As can be easily understood from FIG. 1, the trays 58 forming the sorting section 60 are arranged side by side with a predetermined angular displacement.

Next, the tray 58 that constitutes the transport unit 52 and the sorting unit 60 configured as described above will be described in more detail with reference to FIG.

The transport unit 52 substantially includes a housing 62. Case
The side plates 62a and 62b constituting 62 hold a motor 61 for self-propelling and a motor 63 for driving belt conveyors 54 and 56, and further, rollers constituting the belt conveyor 54.
54a, 54b, 54c, 54d and 54e are bridge-held. A conveyor belt 64 is stretched around these rollers 54a to 54e.
On the other hand, the belt conveyor 56 includes rollers 56a, 56b and 56c. A conveyor belt 66 is stretched around these rollers 56a to 56c. Incidentally, the rollers 54e and 5
The 6c has adjustable positions of its rotating shafts so that the tension applied to the belt can be adjusted.

As can be easily understood from FIG. 3, at least the roller 54a and the roller 56a are arranged close to each other, and the rollers 54b and 56b located above them are also arranged close to each other. An auxiliary roller 68 is arranged above the belt 64. As shown in FIG. 3, in this case, a sprocket 70 is fitted on the rotary shaft of the belt driving motor 63, and a chain 72 meshing with the sprocket 70 is provided with a roller 56a that substantially drives the belt conveyor 56. It meshes with the sprocket 74 fitted to the rotating shaft. A gear 76 is fitted on the rotation shaft of the roller 56a.

On the other hand, a gear 78 is fitted to the rotation shaft of the roller 54a that substantially drives the belt 64. The gear 78 and the gear 76 mesh with each other, and therefore, the rotation of the motor 63 causes the chain 72 to rotate the sprocket.
When transmitted to gear 76 via 70 and 74, gear 78
Rotate in the opposite direction to 76, which results in belt 64 and belt
The conveyance operation is performed while slidingly contacting with 66. At this time, the auxiliary roller 68 cooperates with the belt 64 to transfer the stimulable phosphor sheet 22 conveyed to the belt 64 in the arrow A direction.

On the housing 62, the side plates 62a and 62b are further used to pivotally mount the rotating shafts 80 and 82 in parallel with each other at a predetermined distance.
Rollers 84a and 84b are rotatably supported at both ends of the rotary shaft 80, and rollers 86a and 86b are similarly rotatably supported at both ends of the rotary shaft 82. A sprocket 88 is attached to the rotary shaft 80, while a sprocket 90 is similarly attached to the rotary shaft of the motor 61. A chain 92 is stretched between the sprockets 88 and 90. Therefore,
When the self-propelled motor 61 is driven, the sprocket 90 rotates, and its rotational force reaches the sprocket 88 via the chain 92. In this case, the rollers 84a, 84b and the rollers 86a, 86b
Are in parallel with each other, that is, in contact with the horizontal portions of the angle members 94a and 94b, so that when the rotational force of the motor 61 is transmitted to the rollers 84a and 84b as described above, the rollers 84a and 84b. Is the angle member 94a, 9 together with the housing 62
4b will be displaced and transferred. In this case, the pair of guide rollers 96a and 96b and the guide rollers 98a and 98b are arranged so as to sandwich the vertical portion of the angle member 94b.
Since the housing 62 is pivotally mounted, the housing 62 itself can be transferred smoothly, which is preferable.

Next, below the angle members 94a, 94b, that is,
Below the casing 62 that is displaced in the horizontal direction, casing-shaped trays 58a to 58g that configure the sorting unit 60 according to the present invention are arranged. In this case, the trays 58a to 58g are configured to have different sizes according to the size of the accumulative phosphor sheet 22 to be selected. The trays 58a to 58g are arranged such that their open surfaces face the transport unit 52 and are inclined at a predetermined angle with respect to the vertical direction.

That is, a holding member 100 extending in the horizontal direction is supported by the housing 102 just below the angle members 94a and 94b.
A holding member 103 that bends from the bottom of the housing 102 is extended upward and the upper end of the holding member 103 is attached to the holding member 100. Therefore, inclined angle members 104a to 104g are arranged on the upper surface of the bottom of the holding member 103 at predetermined intervals, and the lower ends of the tray accommodating bodies 106a to 106g having an L-shaped cross section are provided on the angle members 104a to 104g. Fix it. The upper ends of the tray housings 106a to 106g are attached to the holding member 100. As can be easily understood from FIGS. 5 and 6,
In this case, a handle 108 is fixed to one side of the trays 58a to 58g by utilizing the side wall thereof, and a guide member 110 is provided inside the tray in proximity to the upper side wall of the tray.
This guide member 110 is composed of an angle member 111 and a layered body 112, and the layered body 112 has a hardness lower than that of the stimulable phosphor sheet 22 such as a foam material or a flocked material.

The accumulation tray of the stimulable phosphor sheet according to the present invention is basically constructed as described above. Next, its function and effect will be described.

First, the operation of the radiation image information reading apparatus will be described below.

Accumulative phosphor sheet with radiation image information stored and recorded
When 22 is conveyed by the first belt conveyor 24, is nipped between the nip roller 28 and the second belt conveyor 26, and starts to be conveyed in the sub-scanning direction, the laser light from the laser light source 16 is indicated by a chain line. Galvanometer mirror 18 as
And the laser light is reflected by the accumulative phosphor sheet 22.
The surface is scanned in the main scanning direction. In this case, for example, the size of the accumulative phosphor sheet 22 introduced in the reading unit 10 is detected by a detection unit (not shown) via, for example, a bar code attached in advance to the sheet, and this detection signal is primary. Keep it in place. By the way, as described above, the stimulable luminescent light generated as a result of being excited by the laser light is generated in the stimulable phosphor sheet 22,
This is the photomultiplier 14 via the light guide sheet 12.
Then, after being converted into an electrical signal and amplified, it is directly displayed as a visible image on a CRT or the like, or the image information can be stored in a magnetic recording device. Therefore,
After the reading, the accumulative phosphor sheet 22 is bent and conveyed upward in the vertical direction by the third belt conveyor 30, the roller group 32, and the belt conveyor 34, and then is guided by the guide member 36 and the roller 38 to the second guide. Member 40 and fifth belt conveyor 44
Between. At this time, since the sixth belt conveyor 48 and the seventh belt conveyor 50 are driven by a rotary drive source (not shown), the accumulative phosphor sheet 22 is temporarily stored in the sixth belt conveyor 48 and the seventh belt. It will be sandwiched between the conveyor 50.

The stimulable phosphor sheet 22 in the sandwiched state as described above.
After being conveyed for a predetermined distance, the sixth belt conveyor 48 and the seventh belt conveyor
The rotation starts in the direction opposite to that of the belt conveyor 50. Therefore, the stimulable phosphor sheet 22 is so-called switched back and is conveyed to the fifth belt conveyor 44, and is stored in the housing 46 constituting the erasing unit 42. be introduced.

When the stimulable phosphor sheet 22 is thus introduced into the housing 46, the radiation image information remaining on the stimulable phosphor sheet 22 is erased by the irradiation light from the erasing light sources 45a to 45d. Will be.

When the erasing is completed, the belt conveyor 44 is driven again. That is, the stimulable phosphor sheet 22 is again transported toward the guide member 40 under the re-driving of the belt conveyor 44, and the sixth belt conveyor 48 and the seventh belt conveyor 50.
It is sandwiched by and reaches the sorting and conveying unit 52.

Then, the belt conveyor driving motor 63 is driven. That is, as described above, the driving force rotates the gear 76 via the chain 72, and the rotation of the gear 76 causes the gear 78 to rotate in a rotation direction different from the rotation direction.

As a result, since the rollers 56a and 54a rotate, the belt conveyor 54 and the belt conveyor 56 slide in contact with each other and are displaced in the opposite directions. That is, the belt 64 of the belt conveyor 54 is displaced in the arrow A direction, while the belt 66 constituting the belt conveyor 56 is displaced in the arrow B direction. For this purpose, first, the stimulable phosphor sheet 22 is sandwiched between the belt 64 and the roller 68, and then the belt 66.
Is transferred to the direction. The belts 64 and 66, which are in sliding contact with each other, convey the stimulable phosphor sheet 22 thus conveyed to an intermediate position between the rollers 56a and 54a. here,
The driving of the motor 63 is temporarily stopped.

By the way, as described above, the reading unit 10 obtains the size information of the conveyed stimulable phosphor sheet by a bar code or the like in advance and temporarily holds it. Therefore, the signal related to this size is converted into the drive signal of the motor 61 and introduced. As a result, the motor 61 starts driving, and its rotational force reaches the chain 92 via the sprocket 90, and the chain 92 rotates the sprocket 88. by this,
The rollers 84a and 84b rotate, and these rollers 84a and 84b displace the upper surfaces of the horizontal portions of the angle members 94a and 94b and move the entire housing 62 in the direction of arrow C. During this time, guide rollers
Since 96a, 96b and 98a, 98b contact and rotate on the vertical portion of the angle member 62b, the housing 62 can be smoothly transferred.

For example, when the stimulable phosphor sheet 22 has the maximum size, the rotation of the self-propelled motor 61 transfers the housing 62 to the foremost end and stops at the portion directly above the tray 58a. That is, the sheet discharging portion defined by the tips of the belt 64 and the belt 66 is positioned so as to face the opening of the tray 58a. Then, the belt driving motor 63 is rotated again, and the accumulative phosphor sheet 22 sandwiched between the belt 64 and the belt 66.
Will be accommodated in the tray 58a from the sheet discharging section. Of course, when the size of the stimulable phosphor sheet 22 detected by the reading unit 10 is small, the self-propelled motor 61 stops the casing 62, for example, at a portion directly above the tray 58g, and then drives the belt. The motor 63 acts to introduce the stimulable phosphor sheet 22 into the tray 58g.

By the way, since there is a gap separated by a predetermined distance between the belts 64 and 66 and the tray, the stimulable phosphor sheet 22 released by the belts 64 and 66 falls by a predetermined distance due to its gravity. Are stored in a tray.
In this embodiment, in this case, the guide member 1 including the layer body 112 is used.
Due to the arrangement of the sheet 10, the layer body 112 allows the sheet 2
2 is guided to the inside of the tray while being prevented from sliding against the inner edge of the upper side wall of the tray. In particular, in this embodiment, the layer body 112 is made of a foaming agent or a flocking material that is a softer material than the stimulable phosphor sheet 22, so that the surface of the sheet 22 is effectively prevented from being scratched. That is, no trouble occurs in the next image recording.

In the above embodiment, the guide member 1 including the layered body 112
10 is provided inside the tray close to the upper side wall, but the guide member 110 may be provided close to cover the upper end surface of the tray side wall as shown in cross section in FIGS. Good. In addition, when handling the tray,
It is preferable that 110 is provided inside the tray as in the above-described embodiment because it does not get in the way as compared with the case where it is provided outside the tray as shown in FIGS. 7 and 8.

Further, in the above-mentioned three embodiments, the heights of the four side walls of the tray have the same size, but in order to make it easier to carry the stimulable phosphor sheet into the inside of the tray, Even in the case of a tray in which the height of the side wall is lower than the heights of the other three side walls, a guide member including the layered body may be similarly provided (see FIG. 9).

In all of the four embodiments described above, the guide member 110 includes the layered body 112.
Need not necessarily be provided. In such a case, the guide member 110 may be of any shape as long as it is in surface contact with the stimulable phosphor sheet and guides the sheet into the stacking tray. FIG. 11 shows the embodiment.

FIG. 10 shows a semi-cylindrical guide member 110 provided inside the upper side wall of the stacking tray 58 on which the sheets are loaded, and FIG. 11 shows the stacking tray 58 on which the sheets are loaded. Is provided with a guide member 110 which is in contact with the inside of the side wall of the above and whose tip is chamfered as shown in the figure. Also in these embodiments, the stimulable phosphor sheet is guided and accumulated by the guide member 110 without contacting the inner edge of the upper end of the side wall of the accumulating tray 58.

According to the present invention, as can be easily understood from the above description, by providing a guide member having a simple structure on the stacking tray, the accumulative phosphor sheet is not damaged on the inside of the tray. It can be stored smoothly. Therefore, even if this stimulable phosphor sheet is used for re-recording an image, an effect that extremely clear image information is obtained can be obtained.

Although the present invention has been described above with reference to the preferred embodiments, the present invention is not limited to these embodiments, and various improvements and design changes can be made without departing from the scope of the present invention. Of course.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a radiation image information reading apparatus in which an accumulating fluorescent sheet accumulating tray according to the present invention is incorporated, and FIG. FIG. 3 is a schematic perspective view showing a self-propelled portion of a sheet sorting / conveying device to be distributed to trays, and FIG. 3 is a partially omitted view showing a belt driving mechanism of the sheet sorting / conveying device arranged above a stacking tray according to the present invention. FIG. 4 is a perspective explanatory view, FIG. 4 is a perspective explanatory view showing a correlation between a self-propelled mechanism and a belt transport mechanism of a sheet sorting and transporting device for transporting a fluorescent sheet to a stacking tray according to the present invention, and FIG. FIG. 6 is a front explanatory view showing an arrangement state of a plurality of accumulation trays according to FIG. 6, FIG. 6 is a partially omitted perspective view showing a correlation between the tray and a fluorescent sheet that falls according to an embodiment of the present invention, and FIG. And FIG. 8 respectively show the second and the second aspects of the present invention. 9 is a sectional view showing an embodiment of the present invention, FIG. 9 is a partially omitted perspective view showing a fourth embodiment of the present invention, and FIGS. 10 and 11 show the embodiments of FIGS. 5 and 6 of the present invention, respectively. It is sectional drawing shown. 10 …… Radiation image information reading section 12 …… Light guide sheet 14 …… Photomultiplier 16 …… Laser light source 18 …… Galvanometer mirror 20 …… Optical surface plate 22 …… Storage phosphor sheet 24 …… No. 1-belt conveyor 26-second belt conveyor 28-nip rollers 30-third belt conveyor 32-roller group 34-fourth belt conveyor 36-first guide member 38-roller 40- … Second guide member, 42 …… Erasing unit 44 …… Fifth belt conveyor, 46 …… Housing 48 …… Sixth belt conveyor 50 …… Seventh belt conveyor 52 …… Conveying unit 54 …… Eighth belt conveyor 56 …… 9th belt conveyor, 58 …… Tray 60 …… Sort section 61 …… Self-propelled motor, 62 …… Case 63 …… Belt drive motor, 64,66 …… Belt 68 …… Auxiliary roller, 70 …… sprocket 72 …… chain, 74 …… sprocket 76, 78 …… Gear, 80, 82 …… Rotary shaft 84a, 84b, 86a, 86b …… Roller 88, 90 …… Sprocket, 92 …… Chain 94a, 94b …… Angle member 96a, 96b, 98a, 98b ...... Guide roller 100 …… Holding member, 102 …… Case 103 …… Holding member 104 …… Angle member 106 …… Tray storage, 108 …… Grip 110 …… Guide member, 112 …… Layered body

Claims (3)

[Claims] 1. A plurality of sheets are provided side by side with a large inclination with respect to the vertical direction, and the inside of each of the sheets is fed one by one by the feeding of a carry-in mechanism that can freely approach the top of each sheet and the self-weight drop of the accumulative phosphor sheet. A stacking tray of accumulative phosphor sheets that can be selectively stacked on a tray, wherein the tray forms a sheet accommodating portion by a bottom plate on which the sheets are stacked and side walls provided on the bottom plate, and Near the upper side wall located on the upstream side and intersecting the sheet conveying direction, when the sheet is carried into the sheet storage portion from the upper side wall side, the sheet comes into contact with the inner edge of the opening end of the upper side wall. And a guide member for guiding the sheet to prevent the sheet from accumulating, and the guide member includes a layer body softer than the sheet. Integrated tray of the sheet. 2. The tray according to claim 1, wherein the layered body is made of a foaming agent, and the accumulative phosphor sheet stack tray. 3. The tray according to claim 1, wherein the layered body is made of a flocked material, and a stackable tray for accumulative phosphor sheets.