JPS6317442A - Reader for radiograph information - Google Patents

Abstract

PURPOSE:To shorten the length of the peripheral part of the stacker of a sheet conveying means and to reduce the side of a device on the whole by providing a sheet stand-by conveyance part which can convey sheets to a readout part. CONSTITUTION:A sheet 1 taken out of a cassette 2 is sent by the sheet conveying means 50 as shown by an arrow A1 and stored in the stacker 100 temporarily. The sheet 1 carried out of the stacker 100 is conveyed as shown by an arrow A2 and carried in the readout part 20 to preread image information. Then, the sheet 1 which is already read is conveyed by the sheet stand-by conveyance part 60 as shown by an arrow A4 and moved to a main read scanning start position, and then the sheet is conveyed as shown by an arrow A5 to make a main read. Thus, the main read is made, and then switch-back operation is performed by using the conveyance part 60 to shorten the means 50 between the stacker 100 and read part 20, thereby compacting the device laterally.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a radiation image information reading device used in a radiation image information recording and reproducing system, and particularly to a radiation image information reading device that can be miniaturized. It is related to.

(Conventional technology) Certain types of phosphors are exposed to radiation (X-rays, α-rays, β-rays.

When irradiated with γ-rays, W-rays, ultraviolet rays, etc., a portion of this radiation energy is accumulated in the phosphor, and when this phosphor is irradiated with excitation light such as visible light, the fluorescence increases depending on the accumulated energy. It is known that the body exhibits stimulated luminescence, and phosphors exhibiting this property are called stimulable phosphors (stimulable phosphors).

Using this stimulable phosphor, the tIi of a subject such as a human body can be
Part of the rJJ ray image information is recorded on a sheet of 'M multilayer phosphor, and this stimulable phosphor sheet (hereinafter simply referred to as a sheet) is scanned with excitation light such as a laser beam to generate stimulated luminescence light. The radiation rJ4m generates an image, photoelectrically reads the obtained stimulated luminescence light to obtain an image signal, and outputs a radiation image of the subject as a visible image to a recording material such as a photographic light-sensitive material, CRT, etc. based on this image signal. An image information recording and reproducing system has already been proposed by the applicant. (Unexamined Japanese Patent Publication No. 55-124
29@, No. 5G-11395, No. 55-1634
No. 72, 56-104645@.

No. 55-116340 etc. ) In the above system, the sheet on which image information has been stored and recorded by the photographing device is loaded into the reading device and the image information is read. The above sheet is usually placed 1 in the cassette.
Photographing is performed while the sheets are stored one by one, and after the photographed cassette is loaded into a reading device, the sheets inside are taken out and sent to a reading zone within the device.

By the way, reading image information in the reading zone of the above-mentioned reading device takes a relatively long time, and if you load the cassette containing the next sheet into the device after reading one sheet, the number of sheets will increase. Efficient processing becomes impossible.

Therefore, a stacker that can store a plurality of sheets is provided between the cassette holding part that holds the cassettes and the reading zone (reading part), and the sheets are taken out one by one from the cassettes loaded in the cassette holding part and temporarily stored in the stacker. It is conceivable to take out the sheets one by one from the stacker and send them to the reading section each time reading is completed in the reading section.

On the other hand, in the above-mentioned reading section, prior to reading (actual reading) to obtain the image signal for outputting the visible image, pre-reading is performed to read the outline of the image information stored and recorded on the sheet in advance, and the information obtained by this pre-reading is performed. A method is known in which reading conditions and the like for performing the above reading are determined based on the image information obtained, and the reading is performed in accordance with the reading conditions. For example, -F
A method in which the sheet is scanned using excitation light with an energy lower than that of the excitation light used for reading the book, and the stimulated luminescence light emitted by this scanning is read by a charging reading means (for example, Japanese Patent Application Laid-Open No. 58-67240 (see official bulletin), etc. When performing the above-mentioned pre-reading in addition to main reading in the reading section, the sheet is first read in advance while being conveyed in a predetermined direction from the reading start position in the reading section, and then the sheet is reversed by a switchback and returned to the reading start position. , it is common to convey the sheet in a predetermined direction again and perform the main reading.

(Problems to be Solved by the Invention) However, as described above, the reading device that includes a stacker and performs pre-reading and main reading in the reading section has a problem in that the entire IAfi becomes large.

In other words, in order to perform switchback as described above after pre-reading is completed, it is necessary to provide a space for one sheet in front of the reading position (excitation light scanning position), but the processing in the stacker and reading section is In order to use them independently, it is necessary to make the length of the stacker from the sheet delivery position to the reading position larger than the length of the sheet in the conveyance direction. For this reason, there is a problem in that the entire apparatus becomes even larger vertically or horizontally due to the stacker, which is large in size to accommodate a plurality of sheets, as well as the sheet conveying means.

Therefore, the present invention miniaturizes the entire apparatus by devising the arrangement and configuration of the sheet conveyance means in radiation image reading #AW1 which is equipped with the above-mentioned stacker and is capable of pre-reading in the reading section prior to main reading. The purpose is to

(Means for Solving the Problems) The radiation image information reading device of the present invention includes a reading unit that reads radiation image information stored and recorded on a stimulable phosphor sheet, and is capable of holding a plurality of the sheets; a stacker capable of transporting held sheets one by one; a sheet transport means for transporting the sheets transported from the stacker to the reading section; and a sheet transport means provided along the outer surface of the stacker, one end of which connected to the sheet conveying means in front of the reading position of the reading unit;
The present invention is characterized in that it includes a sheet standby conveyance section capable of reciprocating the sheet to the reading section.

(Function) As described above, the 1A device of the present invention is provided with a sheet standby conveyance unit that can convey sheets back and forth to the reading unit, so that sheets are taken out from the stacker and sent to the reading unit by the sheet conveyance means. The sheet that has been fed and subjected to pre-reading can be switched back by the sheet standby conveyance section without relying on conventional sheet conveyance means. Therefore, the sheet conveying means is no longer used for switchback, so the length from the sheet exit of the stacker to the reading position of the reading unit is made shorter than the length of the sheet, and the trailing edge of the sheet is read in advance while it remains in the stacker. It is also possible to start. For this reason, the length of the sheet conveying means near the stacker has been shortened (
By doing so, the entire @box can be made smaller. Furthermore, as mentioned above, since the stacker is larger than a certain extent, blank spaces tend to occur around it. can be appropriately formed in the blank space around the stacker, making it possible to perform switchback without increasing the size of the device.

(Examples) Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic side view showing the outline of a radiation image information reading device according to an embodiment of the present invention.

The reader 5A of the present invention includes a cassette holding section that removably holds a cassette 2 that can accommodate a stimulable phosphor sheet (hereinafter simply referred to as a sheet) 1, and reads image information stored and recorded on the sheet. The cassette 2 is equipped with a reading section 20 and an erasing section 30 for erasing image information remaining on the sheet after reading is completed. The holding part 10 is loaded. This cassette 2 has a light-shielding property to prevent the sheet from being exposed to external light when recording (photographing) image information by irradiating the sheet with radiation. As shown in the figure, a lid portion 2a is formed so as to be openable and closable. This lid part 2
When the cassette 2 is loaded into the cassette holder 10, the arrow a is opened as shown by the solid line in the figure, but when the loading of the cassette 2 is finished, it opens downward as shown by the broken line in the figure. to expose the edge of the inner sheet 1. A transport roller 11 movable in the direction of arrow 8 is provided near the tip of the cassette 2 held in the cassette holding section 10.
When the lid 2a of the cassette 2 is opened, the transport roller 11 moves to the position shown by the broken line in the figure, rotates while pressing the sheet 1 against the upper inner wall surface of the cassette 2, and takes the sheet 1 out of the cassette 2. The sheet 1 is held in the cassette 2 so that the front surface on which the stimulable phosphor layer is formed faces upward.

The illustrated reading device includes a sheet conveying means 50 consisting of an endless belt, a roller, a guide plate, etc., which receives the sheet 1 taken out from the cassette 2 as described above and conveys it to the reading section 20 and the erasing section 30 in this order. The sheet 1 taken out from the transport rollers 11 is sent in the direction of the arrow As by the sheet transport means 50. Furthermore, in the apparatus of this embodiment, between the cassette holding section 10 and the reading section 20 of the sheet conveying means 50,
It has a plurality of sheet storage sections 101 that accommodate sheets one by one, and the sheets 1 carried out from the cassette holding section 10 by moving in the direction of arrow C are stored in the sheet storage section 10.
Stacker 100 temporarily accommodated in any one of 1
is provided. By providing this stacker 100, cassettes that have been photographed can be sequentially loaded into the apparatus regardless of the reading status of preceding sheets in the reading section 20, which will be described later. Hereinafter, the details of the structure and functions of the stacker 100 will be explained with reference to the drawings from FIG. 1 onwards.

As shown in FIG. 2, in the stacker 100, a plurality of 1-rays 103 each capable of holding one sheet 1 are arranged in parallel at equal intervals in a casing 102 consisting of four m-walls. The trays 103 are each tilted diagonally upward. Each tray 103 is made up of a support plate 103A and a bottom plate 103B that is substantially perpendicular to the support plate 103A.
It becomes 01. Note that this support plate 103A is moved by the guide member 110 so that the tray II! The left end is inclined so that the width becomes narrower as it goes upward so that the IM can be expanded. In the case 102 holding these trays 103, a pinion 105 engages with a recess 104 provided at -Ill of the case 102, and a pinion 1
05 is driven and rotated by the motor 106, the wheels 107 attached to the lower end move on the rail 108 in the direction of arrow C. The position of each sheet accommodating section 101 shown in FIG. 1 is the position when the casing 102 is closest to the left side, and each sheet accommodating section 101 is accommodated in the casing 102 until it reaches the position shown by the dashed line in the figure. It is able to move. As the casing 102 moves in the direction of the arrow C as described above, the carry-in roller 5 that carries the sheet 1 into the stacker 100 shown in FIGS. 1 and 2
The tray 103 located below 51A and 51B is replaced, and the carry-in roller 51A.

51 [3 carries the sheet 1 into the tray 103 located below the carry-in rows 551A and 51B. When the sheet 1 leaves the carry-in rollers 51A and 51B, it falls along the support plate 103A of the tray 103 and is received in the tray 103, as shown in FIG. A cushioning material 109 is attached to the bottom plate 1033 of the tray 103 to soften the impact when the sheet 1 falls. Also, sheet 1
In order to facilitate the loading of the sheet 1, the tray 103 that receives the sheet 1 is placed in the adjacent tray 103 as shown in FIG.
The slope can be changed to widen the distance between the two. In order to displace the tray 103, a guide member 110 is provided on the side of the housing 102. The guide member 110 has a wedge shape that gradually increases in thickness toward the top, and has a chamfer 110a at the lower end.
It comes into contact with the inclined left end of the support plate 103A of the tray 103 that receives the sheets 1, and is inserted into the sheet accommodating portion 101 to expand the sheet accommodating portion. Furthermore, since sheets of various sizes can be carried into the tray 103, the guide member 110 also positions the sheets within the tray 103 according to the size of the sheets to be carried. Hereinafter, the driving gJJ mechanism of the guide member 110 and its operation will be explained with reference to FIGS. 2 and 4.

FIG. 4 shows the tray 103 and guide member 110 in the front &!
2 is a schematic diagram viewed from a direction parallel to the direction of arrow C, which is the moving direction of the housing 102. FIG.

The guide member 110 is rotatably supported at the center portion 112a on the upper part of the support member 110b, and has a swing arm in which a long hole 112b provided at one end engages with a pin 111a provided on the rotary plate 111. The other end 112C of 112 is attached to the lower part of the support member 110b.
In addition to the link member 113 rotatably supported at 3a, D
a113b is attached. The rotating plate 111 is rotated in the direction of the arrow by a driving means (not shown) such as a motor, and when the housing 102 moves as described above, the tray is rotated as shown in FIG. 4(a).
103 is in a retreated position from above. Next, when the housing 102 stops at the sheet 1 loading position and the tray 103 into which the sheet 1 is loaded is positioned on the side of the guide member 110, the rotary plate 111 rotates clockwise by a predetermined angle, and the guide member 110 presses the tray 103 and seals the seal housing part 101;
While expanding, it reaches the position shown in FIG. 4(b). Figure 4 (b
), the guide member 110
103 is pressed to widen the distance between adjacent trays, making it easier to carry in the sheet 1 and also regulating the position of the sheet 1 to be carried in. That is, the side surface 1 of the guide member 110
10C is sheet 1 depending on the size of sheet 1 to be carried in.
The position in the width direction of sheet 1 in contact with the side edge of
When the size of the sheet 1 is relatively large, the guide member 110G is stopped at the position shown in FIG. 4(b), but when the size of the sheet 1 being carried in is relatively small, is the tray as shown in Figure 4(C).
It goes deeper inside 103 and stops. The sheet 1 is carried into the tray 103 where the distance between adjacent trays is widened by the guide member 110, and the sheet 1 is carried along the side surface 110ck of the guide member.
03, and its position is regulated at the same time as it is brought in.

When the sheet 1 is carried into the tray 103 as described above, the guide member 110 returns to the position shown in FIG. The loaded tray 103 returns to a state parallel to the adjacent tray 103 again.

Stacker 100 of sheet 1 taken out from cassette 2
The loading to the stacker 1 is carried out as described above.
The sheets stored in each tray 103 in 00 are selected one by one and carried out of the stacker 100, and then conveyed to the reading section 20. The sheet is taken out from the stacker 100 immediately after the previous sheet is removed in the reading section 20. At the lower end of the stacker 100, as shown in FIG.
is moved in the direction of arrow C so that the tray 103 holding the selected sheet 1 is positioned above the transport rollers 52A, 52B. The process of carrying out the sheet 1 from the stacker 100 after the positioning of the housing 102 is completed will be described with reference to FIG. 5.

The bottom plate 103B of the tray 103 is connected to the support plate 103A by a spring 114, and normally the support plate 103A
It is located almost vertically. Furthermore, a protrusion 103b is formed at the side end of the bottom plate 103B. A lever 115 having a protrusion 115a and rotated in the direction of the arrow by a drive means 116 such as a rotary solenoid is provided near the conveyance roller 52A. is the protrusion 115a of the lever 115
engages with the protrusion 103b, and the lever 115 moves in the direction of the arrow [T
] By rotating in direction F, the bottom plate 103B is rotated in the force direction of arrow D' while stretching the spring 114, and the bottom plate 1
03B is moved onto substantially the same plane as the support plate 103A as shown by the broken line in FIG. When the bottom plate 103B rotates to the above position, the sheet 1 in the tray 103 falls due to its own weight, and the sheet 1 falls to the conveyance roller 52A.

52B grips the leading end of the falling sheet 1 and conveys the sheet 1 to the outside of the stacker 100. Sheet 1 stacker
When the removal from 100 is completed, the lever 115 returns to the position shown in the figure, and the bottom plate 103B returns to the position shown by the solid line in the figure by the force of the spring 114.

The sheet 1 discharged from the stacker 100 is conveyed in the direction of arrow A2 by the sheet conveying means 50, as shown in FIG. 1, and is conveyed into the reading section 20.

The reading section 20 scans the sheet 1 on which image information is stored and recorded with an excitation light 21 such as a laser beam, and converts stimulated luminescence light emitted from the sheet 1 by the scanning into a photoelectric reading means 22 such as a photomultiplier. The image is read out photoelectrically to obtain an electrical image signal for outputting a visible image. In the figure, 23 is an excitation light source, 24 is a light deflector such as a carbanometer mirror, and 26 is a light guide 22a of a photoelectric reading means for detecting stimulated luminescence light emitted from the sheet 1 (the light guide 22a is a photoelectric reading means). This is a reflecting mirror that reflects the light toward a photodetector i1322b such as a photomultiplier while totally reflecting the light.

The sheet 1 carried into the reading section 20 is conveyed to a scanning position by the excitation light 21 in a direction perpendicular to the scanning direction of the excitation light, so that the entire surface of the sheet is two-dimensionally scanned and stimulated luminescent light is generated. This stimulated luminescence light is transmitted to the light guide 2.
The image information is detected by the photodetector 22b via the photodetector 22a, and the image information is read.

Further, the reading section 20 in this apparatus is configured to perform pre-reading to determine the reading conditions and the like for the main reading, prior to the main reading which is the reading for outputting the visible image.

That is, the sheet 1 taken out from the stacker 100
is first read in advance while being conveyed in the direction of arrow A3,
After the pre-reading is completed, it is moved to a position where the actual reading is possible. In this device, the unloading roller 5
The length of the transport path from 2A to the scanning position P of the excitation light 21 is shorter than the length of the sheet 1.
Pre-reading of the leading end of the stacker 100 is started while its rear end is inside the stacker 100. Therefore, in this apparatus, the reading section 20 and the stacker 100 are arranged close to each other.

Below the stacker 100 is the scanning position tlffP.
It is connected to the sheet conveying means 50 in front of the reading unit 2.
A sheet standby conveyance unit 60 is provided that can convey the sheet 1 back and forth with respect to the sheet 1 . The sheet 1 for which pre-reading has been completed is transported by the sheet standby transport section 60 in the direction of arrow A4 and moved to the main reading scanning start position, and then transported in the direction of arrow A6 for main reading. The sheet standby conveyance section 60 has a length comparable to the length of the sheet 1, and is provided along the lower end surface of the stacker 100 in the empty space created below the stacker by providing the stacker 100. Therefore, there is almost no need to increase the size of the device. By performing the switchback after the end of pre-reading using the sheet standby conveyance unit 60 in this way, the stacker 100 and the reading unit 20 can
The sheet conveying means 50 in between can be shortened as described above, and the v4 position can be made more compact in the lateral direction.

In addition, in addition to photographing the sheets held in the cassette, the external photographing device also takes out multiple sheets stored in the sheet supply magazine one by one when performing continuous IJI shadowing. Photography may be taken.

The sheets that have been decoyed are sequentially stored in a sheet storage magazine, and the sheet storage magazine containing the sheets is sent to a reading device to be read. 71 and is connected to a magazine feeder section 70 that takes out and conveys the sheets in the magazine one by one, the magazine 7
If the sheet standby conveyance section 60 is used as the conveyance means for conveying the sheet 1 taken out from the sheet 1 to the reading section 20, the space within the apparatus can be utilized more effectively.

Note that the optical members arranged in the reading section 20 are not limited to those described above; for example, a long photomultiplier is arranged along the main scanning line as a photoelectric reading means, and a light guide The stimulated luminescence light may be detected without using the sheet 22a. Further, reading image information in the reading section 20 takes a relatively long time, but since this apparatus is provided with the stacker 100 as described above, reading is performed on a single sheet. While you are there, the sheets 1 that have been photographed are placed in the stacker 10
0, and can be carried into sheet 1 very efficiently.
processing can be performed. Further, it is also possible to preferentially send a specific sheet on the back side of the sheets 1 stored in the stacker 100 to the reading section for reading. Note that in order to take out a desired sheet from the stacker 100, the sheets stored in each tray 103 in the stacker 100 are memorized, and the work of taking out a predetermined sheet is controlled based on the stored information. In this apparatus, a control section 40 that performs the above control is provided above the reading section 20. In addition, if the reading section 20 and the sheet conveying means around it in the range shown by the broken line in the figure are integrally vibration-proofed with anti-vibration rubber 80 or the like, when the sheet 1 is scanned by the excitation light 21, the sheet and Since the entire scanning system is prevented from vibrating, highly accurate scanning can be performed.

As mentioned above, the sheet 1 whose image information has been read in the reading section 20 is moved by the sheet conveying means 50 to the direction indicated by the arrow A6.
．． A? direction and is transported toward the erasing section 30.

The erasing section 30 is for erasing the radiation image information remaining on the sheet 1 after the reading is completed (for emitting the t14 radiation energy remaining in the stimulable phosphor). That is, some of the radiation image information stored and recorded on the sheet 1 still remains on the sheet after being read, and in order to reuse the sheet 1, this residual image information is erased in the erasing section 30. . Any erasing method may be used in this erasing section 30. The erasing unit 30 in this embodiment includes a fluorescent lamp and a tungsten lamp.

A plurality of erasing light sources 31 such as sodium lamps, xenon lamps, and iodine lamps are provided, and the sheet 1 is arranged in the direction of arrow A4.
The remaining radiation energy on the sheet is emitted by being irradiated with the erasing light 3I31 while being conveyed in the direction.

The sheet 1 that has been erased in the erasing section 30 is conveyed in the direction of the arrow Ash, is carried out of the apparatus, and is again carried into a magazine, cassette, or the like. Further, the sheets that have passed through the erasing section 30 may be accumulated on a tray or the like within the reading device, or may be carried into an empty cassette 2 within the cassette holding section 10. Further, the device of the present invention may not include an erasing section, and erasing may be performed by an external device.

In this way, in the apparatus of this embodiment, by providing the stacker 100, sheets can be processed efficiently, and the space inside the apparatus can be used effectively to perform switchback after pre-reading. By providing the sheet standby conveyance section 60, it is possible to shorten the sheet conveyance means between the stacker and the reading section, thereby minimizing the increase in size of the apparatus provided with the stacker. In addition,
The above-mentioned stacker may be of any structure as long as it can hold a plurality of sheets and take out the held sheets one by one, and the direction in which the sheets are held is particularly vertical. For example, as shown in FIG. 6, a stacker 100' for storing sheets diagonally is fixed at a predetermined position, and a part of the sheet conveying means 50 is movable in the direction of the arrow. low 553
The moving roller 53 grips the sheet stored at a desired position in the stacker and transports the sheet to the sheet conveying means 50.
You may also pass it to Furthermore, the sheet standby conveyance section 60
Depending on the positional relationship between the reading unit 20 and the stacker 100, the stacker may be placed at an optimal position along the outer surface of the stacker without increasing the size of the device. For example, when the reading section 20 is provided under the stacker 100 as shown in FIG. 7, the sheet standby conveyance section 60'' may be provided along the side edge surface of the stacker 10G. By providing a sheet standby conveyance path, compared to a case where only a sheet conveyance means is provided,
By shortening the length of the sheet conveying means, it is possible to reduce the size of the sheet in the longitudinal direction and/or the lateral direction.

(Effects of the Invention) As described above, according to the radiographic image information reading device of the present invention, in a device that includes a stacker and performs pre-reading and main reading in the reading section, the sheet switchback function is applied along the outer surface of the stacker. By providing the sheet standby conveyance section, the length of the sheet conveyance means from the stacker to the reading position can be shortened, and the sheet standby conveyance section itself can be accommodated within the space formed by the stacker. Since there is almost no risk of increasing the size of the device, the entire device can be made compact.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a radiation image information reading device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the structure of the sorter section of the device, and FIG. 3 is a sheet conveyance of the tray of the sorter section. FIG. 4 is a schematic diagram illustrating the function of the guide member of the sorter section; FIG. 5 is a perspective view showing a take-out mechanism for taking out sheets from the sorter section; FIGS. 6 and 7 The figure is a schematic diagram showing a stacker and a sheet standby conveyance section according to another embodiment of the present invention. 1...Storage phosphor sheet 2...Cassette 1G-
...Cassette holding section 20...Reading section 30...
Erasing section 50... Sheet conveying means 60...
...Sheet standby transport section 100...Stacker Fig. 3 Fig. 5 Fig. 6vA Fig. 7 2υ October 5, 1985 Patent Application No. 161,513 @ 2, 1985, Title of Invention Radiographic image information reading device 3. Relationship with the case of the person making the amendment Patent applicant location 2101 Nakanuma, Minamiashigara City, Kanagawa Prefecture Place name (
520) Fuji Photo Film Co., Ltd. Representative Ohnishi
4. Agent address: 5-5, 7th floor, Hauraiya Pill, 5-2-1 Roppongi, Minato-ku, Tokyo Date of amendment order Voluntary amendment 6. ``Claims'' and ``Details of the invention'' of the specification to be amended "Explanation" column 7, subject of amendment 1) The scope of claims is corrected as shown in the attached sheet. 2) Specification Claims characterized by "reciprocation" on page 6, line 20 and page 7, line 3, "reciprocating" A reading unit that reads radiation image information stored and recorded on a stimulable phosphor sheet, said sheet. a stacker capable of holding a plurality of sheets and carrying out the held sheets one by one; a sheet conveying means for conveying the sheets carried out from the stacker to the reading section; one end is connected to the sheet conveying means in front of the reading position of the reading section;
A radiation image information reading device comprising a sheet standby transport section capable of transporting the sheet to the reading section.

Claims (1)

[Scope of Claims] A reading unit that reads radiation image information stored and recorded on a stimulable phosphor sheet, capable of holding a plurality of the sheets, and capable of transporting the held sheets one by one. a stacker, a sheet conveying means for conveying sheets carried out from the stacker to the reading section, and a sheet conveying means provided along an outer surface of the stacker, one end of which is connected to the sheet conveying means in front of the reading position of the reading section. death,
A radiation image information reading device comprising a sheet standby transport section capable of transporting the sheet back and forth to the reading section.