JPH01206329A - Radiograph information reader - Google Patents

Abstract

PURPOSE:To miniaturize the title reader by arranging a magazine so as to be adjacent to a sheet carrying system placed adjacently in parallel to a part where a platen of a reading part is moved. CONSTITUTION:As for a sheet carrying system 50, its one end part 50A and the other end part 50B are arranged so as to be adjacent to a platen being in a first stop position and a second stop position, respectively. As for an accumulating phosphor sheet 2 in which radiograph information is stored and recorded, plural sheets are contained in a supply magazine 41, and held in a supply magazine holding part 40 so that its sheet outlet 42 turns to the one end part 50A side of the sheet carrying system 50. In such away, a part where the platen 1 of a reading part is moved and the sheet carrying system are arranged adjacently to each other in parallel, therefore, since these reading part and sheet carrying system 50 are contained in a small space, and also, it can be repeated alternately to supply and contain a sheet to the platen 1 from the magazine 41, the device can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a radiation image information reading device that reads radiation image information by scanning excitation light onto a stimulable phosphor sheet on which radiation image information is stored and recorded. In particular, the layout of the conveyance system that conveys the stimulable phosphor sheet from the magazine to the excitation light scanning section and conveys the stimulable phosphor sheet taken out from the excitation light scanning section to the magazine is improved. The present invention relates to a radiation image information reading device that is miniaturized.

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

When irradiated with γ-rays, electron beams, ultraviolet rays, etc., a part of this radiation energy is accumulated in the phosphor, and when this phosphor is irradiated with excitation light such as visible light, the phosphor changes depending on the accumulated energy. is known to exhibit stimulated luminescence, and phosphors exhibiting this property are called stimulable phosphors (stimulable phosphors).

Using this stimulable phosphor, radiation image information of a subject such as a human body is partially recorded on a sheet of stimulable phosphor, and this stimulable phosphor sheet is scanned with excitation light such as a laser beam to make it shine. The resulting stimulated luminescent light is generated and photoelectrically read to obtain an image signal, and based on this image signal, the radiation image of the subject is recorded as a visible image on a recording material such as a photographic light-sensitive material, a CRT, etc. The applicant has already proposed a radiation image information recording and reproducing system for outputting (Japanese Patent Application Laid-Open No. 1983-1999)
No. 12429, No. 5G-11395, No. 55-183
No. 472, No. 5B-104645, No. 55-1163
No. 40, etc.).

Furthermore, the above-mentioned stimulable phosphor sheet is used not only as a means for recording medical images in the radiation image information recording and reproducing system described above, but also in various fields. , previously proposed an electron microscope image recording and reproducing method using the above-mentioned stimulable phosphor sheet (Japanese Patent Application Laid-open Nos. 51738-1982 and 1981-81).
No. 93539, etc.). This electron microscope image recording and reproducing method basically involves irradiating a stimulable phosphor sheet that stores electron beam energy with an electron beam that has passed through a sample in a vacuum state, and then irradiating the stimulable phosphor sheet with excitation light. The accumulated energy is released as stimulated luminescence light, the emitted light is detected photoelectrically to obtain an image signal, and this image signal is used to reproduce the electron microscope image of the sample.

In the method for recording and reproducing radiation image information (including electron microscope image information) explained above, a cylindrical platen (sheet holding means)
A stimulable phosphor sheet is fixed to the stimulable phosphor sheet, and the excitation light irradiation system is rotated with the central axis of the cylindrical surface as the rotation axis to main scan the excitation light beam over the stimulable phosphor sheet, and the platen is rotated along the central axis. An apparatus has been proposed in which sub-scanning of the excitation light beam is performed by linearly moving the excitation light beam in a direction parallel to the excitation light beam (an example thereof is shown in Japanese Patent Application No. 189539/1983).

(Problem to be Solved by the Invention) On the other hand, the above-mentioned stimulable phosphor sheets are often stored in a magazine and handled as a unit, but the stimulable phosphor sheets described above are often handled as a magazine unit. In the radiation image information reading device, which performs sub-scanning of the excitation light beam by moving the Since a sheet conveyance system for conveying the stimulable phosphor sheet from the platen to another storage magazine is required, there is a problem in that the apparatus tends to be large in size.

The above-mentioned problem is not limited to radiographic image information reading devices having a cylindrical platen. This is generally recognized in radiation image information reading apparatuses in which the sub-scanning of the excitation light beam is performed by moving the excitation light beam linearly in a direction substantially perpendicular to the main-scanning direction.

Therefore, the present invention aims to reduce the size of the sheet transport system that transports the stimulable phosphor sheet from the magazine to the platen, and the transport system that transports the stimulable phosphor sheet from the platen to the magazine after reading the image information. It is an object of the present invention to provide a radiation image information reading device that can be formed.

(Means and Effects for Solving the Problems) As described above, the first radiation image information reading device of the present invention is a radiation image information reading device in which a platen is linearly moved for sub-scanning of an excitation light beam. In the image information reading device, a first stop position where movement for excitation light sub-scanning is started;
The stimulable phosphor sheet is placed close to one end and the other end of the platen at the second stop position where the movement has ended, and the stimulable phosphor sheet is directed from the one end to the other end of the platen. A sheet conveyance system that conveys the sheet almost parallel to the moving direction is provided, and a supply magazine that stores the stimulable phosphor sheet before image information is read is placed close to one end of the sheet conveyance system, and image information reading is completed. a storage magazine for storing the stimulable phosphor sheet, which is disposed close to the other end of the sheet conveyance system, and a first sheet delivery means for delivering the stimulable phosphor sheet from the supply magazine to the sheet conveyance system; and a second sheet delivery means for delivering the stimulable phosphor sheet from the sheet conveyance system to the platen at the first stop position;
a third sheet delivery means for delivering the stimulable phosphor sheet from the platen at the second stop position to the sheet transport system; and a fourth sheet delivery means for delivering the stimulable phosphor sheet from the sheet transport system to the storage magazine. The present invention is characterized by being provided with a delivery means.

Further, the second radiation image information reading device of the present invention is configured to use only one magazine, and similarly to the first device, the platen is moved in a straight line for sub-scanning of the excitation light beam. In the radiographic image information reading device, the platen is located at a first stop position where the movement for sub-scanning of the excitation light starts, and at a second stop position where the movement ends, with one end of the platen, A sheet conveying system is provided, which is arranged so that the other end portions are close to each other, and conveys the stimulable phosphor sheet between the one end portion and the other end portion approximately parallel to the moving direction of the platen, and the stimulable phosphor sheet a first sheet delivery means for disposing a magazine for storing body sheets in close proximity to the sheet transport system, and delivering the stimulable phosphor sheet between the magazine and the sheet transport system; a second sheet delivery means for delivering the stimulable phosphor sheet to the platen at the first stop position; and a third sheet delivery means for delivering the stimulable phosphor sheet from the platen at the second stop position to the sheet transport system. The invention is characterized in that it is provided with a sheet delivery means.

In the above configuration, the part of the reading section where the platen moves and the sheet conveyance system are arranged close to each other and parallel to each other, so that the reading section and the sheet conveyance system can be accommodated in a small space.

In particular, in the first device, if it is known in advance that the stimulable phosphor sheet taken out from the supply magazine is one that has failed in radiographic imaging and does not require reading, the stimulable phosphor sheet is It is also possible to directly convey the sheet toward the other end of the sheet conveyance system without sending it to the platen, and by doing so, it is possible to eliminate meaningless reading operations and increase the reading processing speed per magazine. .

Further, in the second device, since the feeding of sheets from the magazine to the platen and the storing of sheets from the platen to the magazine can be repeated alternately, only one magazine is required to be loaded, and the device can be particularly miniaturized.

(Embodiment) FIG. 1 is a plan view showing the overall arrangement of a radiation image information reading device according to a first embodiment of the present invention, and FIG. 2 and FIG. It is a partial side view which shows the state seen from arrow C direction and D direction. This radiation image information reading device basically includes a reading section 30, a supply magazine holding section 40, and one end section 50 at the supply magazine holding section 40.
A sheet conveyance system 50 disposed close to A, a storage magazine holding section 60 disposed close to the other end 50B of this sheet conveyance system 50, and 1.2.3 and 4 sheet delivery means. 71, 72, 73 and 74, and an erasing section 80 disposed above the other end 50B of the sheet conveyance system 50.

In the reading section 30, the platen 1 is linearly moved in the direction of arrow A between a first stop position shown by a solid line in FIG. 1 and a second stop position shown by a dashed line. As described above, while the stimulable phosphor sheet 2 held on the platen 1 is being moved in this manner, radiation image information is read from the sheet 2. The sheet conveying system 50 has one end 50A1 and the other end 50B.
are arranged close to the platen 1 at the first stop position and the second stop position, respectively.

As mentioned above, there are multiple stimulable phosphor sheets 2 on which radiation image information is accumulated and recorded by, for example, irradiating radiation that has passed through an object such as a human body, or by irradiating an electron beam that has passed through a sample in an electron microscope. is stored in the supply magazine 41 and loaded into the radiation image information reading device. That is, the supply magazine 41 is held by the supply magazine holding section 40 with its sheet outlet 42 facing toward the one end 50A of the sheet conveyance system 50.

The stimulable phosphor sheets 2 in the supply magazine 4I are taken out of the magazine one by one by a first sheet delivery means 71 consisting of, for example, a moving arm equipped with an air suction cup at the lower end, and then transferred onto the sheet conveyance system 50. will be placed on.

As an example, this sheet conveyance system 50 includes a pair of rollers 51
．． A plurality of endless belts 53 stretched across 52 and arranged parallel to the moving direction of the platen 1, and a motor 5 that rotates the roller 52 and rotates the endless belt 53.
It is composed of 4. 1 on endless belt 53
When a portion of the stimulable phosphor sheet 2 is placed, the motor 54 is driven by a command from a control circuit (not shown), the endless belt 53 is rotated, and the sheet 2 is moved to the right in FIG. transported. At this time, the platen 1 is at the first stop position, and when the stimulable phosphor sheet h2 reaches this position in front of the platen 1 (lower position in FIG. 1), the motor 54 is stopped. Next, this stimulable phosphor sheet 2 is held at its end by a second sheet delivery means 72 similar to the first sheet delivery means 71, and
The means 72 pushes the platen 1 onto the endless belt 53. In addition, endless belt 53
In between, there is a seat receiving plate 55 at almost the same height as those.
A guide roller 56 is provided between the side of the endless belt 53 and the platen 1, and a guide roller 56 is provided between the side of the endless belt 53 and the platen 1.
slides on these sheet receiving plates 55 and guide rollers 5G and moves toward the platen 1 side.

Next, reading of radiation image information from the stimulable phosphor sheet 2 will be described with reference to FIGS. 4.5 and 6, which show the reading section 30 in detail. The platen 1 has an inwardly convex cylindrical surface 1
A drive roller 6 and a roller 7 driven by the drive roller 6 are provided close to the lower end of the cylindrical surface 1a. When the end of the stimulable phosphor sheet 2 is fed to the bottom of the platen 1 as described above, the roller 6 rotates to feed the sheet 2 to a predetermined position along the cylindrical surface 1a. In this way, the stimulable phosphor sheet 2 is held on the platen 1 at the first stop position as shown by the dashed line in FIG. The lower part of the platen 1 is threadedly engaged with a screw rod 3, and a motor 4 is connected to the platen 1.
By rotating this screw rod 3, it moves along the two guide rails 5 from the first stop position shown by the solid line in FIG. 4 to the second stop position shown by the dashed line in the figure. It is possible to move in the direction of the arrow at a constant speed. In this apparatus, the screw rod 3, motor 4, and guide rail 5 constitute a sub-scanning means.

A scanning optical system 8 as shown in FIG. 5 is disposed above the platen 1, and this scanning optical system 8 reads image information stored and recorded on the stimulable phosphor sheet 2. It will be done. In the scanning optical system 8 described above, a laser beam 10 as excitation light is emitted from a He-Ne laser 9 as an excitation light source. This laser beam 10 passes through a filter 11 that cuts unnecessary wavelengths of light, passes through an acousto-optic modulator (AOM) 12 for adjusting the intensity, and then enters two reflection mirrors 13 and 14. to change the optical path. Note that the mirror 14 receives the incident laser beam 10.
The laser beam 10a transmitted through this mirror 14 is configured to transmit a small portion of the light at a constant rate.
The intensity of is detected by the photodetector 15.

The photodetector 15 controls the AOM 12 according to the intensity of the detected laser beam 10a so that the intensity of the laser beam 10 emitted from the AOM 12 is always constant.

The laser beam 10 reflected by the mirror 14 passes through a beam expander 16 and is expanded to a predetermined beam diameter, and then transmits light in the wavelength range of the stimulated luminescent light, which will be described later. is a reflecting dichroic mirror 1
7. Note that the laser light incident surface 17a of this dichroic mirror 17 is subjected to surface treatment so as to reflect only a small portion of the incident laser light 10, and the thus reflected laser light 10b is passed through the focusing lens. 1
8 and passes through the aperture 19a of the aperture plate 19,
It is detected by the photodetector 20. By detecting the incident position of the laser beam 10b, this photodetector 20 detects whether the optical axis is at a predetermined position, and
A signal is generated to finely adjust the position of the mirrors 13 and 14 in accordance with the position of the mirrors 13 and 14.

Laser light 10 transmitted through the dichroic mirror 17
is incident on a spinner 21 placed in the optical path and is reflected and deflected. This spinner 21 has an incident laser beam 10
A deflection mirror 22 having a reflecting surface 22a having an inclination of 45 degrees with respect to the deflection mirror 22 is continuously rotated at high speed in the direction of arrow B by a spindle motor 22A. Note that this deflection mirror 22 is arranged so as to reflect the laser beam 10 on the central axis of the cylindrical surface 1a of the platen 1.
The optical path length of the laser beam from this reflection position to the top of the stimulable phosphor sheet 2 is always constant. Further, in the optical path of the laser beam 10 reflected and deflected by the mirror 22, there is a condenser lens 23 that focuses the laser beam 10 incident as parallel light onto a desired spot on the stimulable phosphor sheet 2. It is provided. This converging lens 23 is rotated at high speed as part of the spinner 21 and integrally with the deflection mirror 22. The laser beam IO reflected and deflected by the spinner 21 repeatedly scans the stimulable phosphor sheet 2 in the direction of arrow B (see FIG. 5). At the same time, sub-scanning is performed by moving the platen 1 at a constant speed in the direction of the arrow A as described above, and the laser beam 10 scans the stimulable phosphor sheet 2 two-dimensionally.

The portion of the stimulable phosphor sheet 2 irradiated with the laser beam 21 emits stimulated luminescence light 24 corresponding to the image information stored and recorded in that portion. This stimulated luminescence light 24 is emitted as non-directional light from the excitation light irradiation position, but the condenser lens 2 is placed at a distance of focal length f from the excitation light irradiation position.
3, it becomes parallel light. The stimulated luminescent light 24 that has become parallel light is reflected by the deflection mirror 22 of the spinner, and then enters the dichroic mirror 17 and is reflected. A detection lens 25 that focuses the stimulated luminescent light 24 is provided on the optical path of the stimulated luminescent light 24 reflected by the dichroic mirror 17.
4 is focused by this detection lens 25 and enters a photomultiplier 26. Furthermore, at the position where the stimulated luminescence light 24 is focused by the detection lens 25, an aperture plate 27 having an opening 27a having a size that allows only the focused stimulated luminescence light 24 to pass through is arranged. A portion of the laser beam 10 incident on the stimulable phosphor sheet 2 is reflected on the sheet surface, and this reflected light hits a member in the device such as a condensing lens and is reflected again to form a predetermined laser beam on the stimulable phosphor sheet 2. When parts other than the light irradiation position are excited, stimulated luminescent light is generated from these parts, but these stimulated luminescent lights are absorbed by the condenser lens 2.
3 and the detection lens 25, it is guided to a position different from that of the stimulated luminescent light emitted from a predetermined position.

Therefore, these stimulated luminescence lights are cut by the aperture plate 27 and are prevented from entering the photomultiplier 26. It should be noted that the laser beam lO reflected on the stimulable phosphor sheet 2 and passed through the condenser lens 23 together with the stimulated luminescent light 24 enters the open IT1. Opening 27a of ll1E27
Therefore, a filter 28 is provided on the light-receiving surface of the photomultiplier 26 to selectively transmit only light in the wavelength range of the stimulated luminescence light 24. The laser beam 10 that has passed through is cut.

The photomultiplier 26 photoelectrically reads the incident stimulated luminescent light 24 and outputs a read image signal.

After this read image signal is processed in an image reading circuit (not shown), it is input to a reproducing device such as a CRT or optical scanning recording device, and the radiation image is displayed as a visible image on the CRT or reproduced as a note copy. .

At the time when the reading of the radiation image information is finished as described above, the platen 1 has moved to the position shown by the dashed line in FIGS. ) is stopped. Next, the roller 6 is rotated in the opposite direction to the above case, and the stimulable phosphor sheet 2 is rotated.
is sent from the platen 1 onto the sheet conveyance system 50. A guide roller 57 is provided between the platen 1 at the second stop position and the endless belt 53, and a sheet receiving plate similar to the sheet receiving plate 55 is provided at the other end 50B of the sheet conveying system 50. 58 are provided,
The stimulable phosphor sheet 2 slides on these guide rollers 57 and sheet receiving plate 58. When most of the stimulable phosphor sheet 2 is fed onto the sheet conveyance system 50, a third sheet transfer means 73 similar to the second sheet transfer means 72 holds the edge of the sheet 2 and Pull the sheet 2 downward in FIG. The stimulable phosphor sheet 2 is thereby separated from the roller 6.7 and completely rests on the endless belt 53. At this time, the erasing unit 80 irradiates the stimulable phosphor sheet 2 with light in the excitation wavelength range of the sheet 2 . As a result, the radiation energy remaining in this sheet 2 even after reading the radiation image information is released,
The stimulable phosphor sheet 2 becomes ready to store and record new radiation image information. Next, the sheet delivery means 7
3 is released, the motor 54 is driven, and the endless belt 53 is rotated. Thereby, the stimulable phosphor sheet 2 is conveyed toward the storage magazine holding section θ0.

Further, when the stimulable phosphor sheet 2 is taken out from there, the platen 1 is moved in the opposite direction to that during image reading and returns to the first stop position, in preparation for the next reading.

In the storage magazine holding section 60, the storage magazine 61 is
The sheet population 62 is at the other end 50B of the sheet conveying system 50.
The sheet transport system 50 transports the stimulable phosphor sheet 2 toward the sheet population 62. Further, the height of the storage magazine holding section B[) can be changed as appropriate by the lifting device 63. For example, the height of the storage magazine holding section B[) can be changed every time one stimulable phosphor sheet 2 is stored.
The height of the storage magazine 61 is raised or lowered by one pitch of the sheet receiving plate of the magazine 61.
The empty portion of the endless belt 53 is aligned with the upper surface of the endless belt 53. Therefore, when the endless belt 53 is rotated by a predetermined amount, the stimulable phosphor sheet 2 placed thereon enters the empty portion of the storage magazine 61. After most of one stimulable phosphor sheet 2 has entered the storage magazine 61 in this manner, the end portion of the sheet 2 is held by a fourth sheet delivery means 74 similar to the first sheet delivery means 71. The stimulable phosphor sheet 2 is then pushed into the storage magazine 61 side, so that the stimulable phosphor sheet 2 is completely stored in the storage magazine 61.

Note that the above-mentioned supply magazine holding section 40 is also used to hold the storage magazine in order to eliminate the height difference between the stimulable phosphor sheet 2 to be taken out from the supply magazine 41 and the upper surface of the endless belt 53, especially when the supply magazine 41 is for a large number of sheets. It is preferable to provide a lifting device 43 (see FIG. 2) similar to the lifting device 63 of the holding part 60 so that the height can be changed.

By the way, depending on the management of the plurality of stimulable phosphor sheets 2 stored in the supply magazine 41, it is possible to know in advance how many sheets 2 have failed in radiographic imaging and do not need to be read. can do. In such a case, after the sheet 2 is sent from the supply magazine 41 onto the sheet conveyance system 50, the second and third sheet transfer means 72, 73 remain inactive, and the sheet 2 is It is possible to transport it parallel to the moving direction of the platen 1 by the transport system 50, perform only the erasing process by the erasing section 80, and store it in the storage magazine 61 as it is.

Note that the supply magazine holding section 40 and the storage magazine holding section 60
is disposed below the sheet conveying system 50 in FIG. Good too.

Next, a second embodiment of the present invention will be described with reference to FIG. Note that in FIG. 7, elements equivalent to those in FIG. This device has a configuration in which the storage magazine holding section 60 and the fourth sheet delivery means 74 are removed from the device shown in FIG.
Further, the first sheet delivery means 171 is connected to the magazine 141.
The stimulable phosphor sheet 2 is configured to be able to be transferred from the stimulable phosphor sheet 2 to the sheet conveying system 150 and in the opposite direction.

Further, a motor 154 capable of forward and reverse rotation is used as the motor 154 of the sheet conveyance system 150, and the sheet conveyance system 150 moves the stimulable phosphor sheet 2 from one end 150A to the other end 150B and in the opposite direction. can be transported.

In the radiation image information reading device having the above configuration, the stimulable phosphor sheet 2 is taken out from the magazine 141, the platen 1
, processing for reading radiation image information from the sheet 2, sending it to the sheet conveyance system 1.50, and erasing section 8.
The erasing process using 0 is performed in the same manner as in the apparatus shown in FIG. However, in this device, when the stimulable phosphor sheet 2 is placed on the sheet conveyance system 150 by the third sheet transfer means 73 and the erasing process is completed, the motor 154 is moved in the opposite direction from the case described above. As a result, the stimulable phosphor sheet 2 is transported from the right side to the left side in FIG. 7 by the transport system 150.

The height of the magazine holder 140 whose crystallinity is made variable by a lifting device 143 similar to the lifting device 43 shown in FIG. The height of the stimulable phosphor sheet 2 remains the same as when it was taken out from the stimulable phosphor sheet 2.
When the sheet 2 is conveyed, the sheet 2 is transferred to the magazine 14 before being read.
Enter the part that was stored in 1. When most of the stimulable phosphor sheet 2 enters the magazine 141, the first sheet delivery means 171 is activated and the sheet 2
is pushed into the back side of the magazine 141 (left side in FIG. 7), and the sheet 2 is separated from the sheet conveying system 150 and completely stored in the magazine 141.

When the reading process for one stimulable phosphor sheet 2 is completed in this way, the magazine holding section 140 is moved to the elevating device 143.
As a result, the sheet receiving plate of the magazine 141 is raised or lowered by one pitch. As a result, the height position of the sheet 2 next to the stimulable phosphor sheet 2 after the reading process is completed matches the height of the endless belt 53.
Thereafter, this sheet 2 is taken out from the magazine 141, and the reading process, erasing process, and storage in the magazine 141 are performed in the same manner as described above.

Also in this radiation image information reading device, the magazine 14
If it is known that a certain stimulable phosphor sheet 2 in the stimulable phosphor sheet 2 does not need to be subjected to the reading process for the reason described above, the second sheet delivery means 72 is stopped and the sheet conveyance system 150 Top stimulable phosphor sheet 2
The data can be sent to the erasing section 8o, subjected to erasing processing there, and then returned to the magazine 141. In addition, especially when the erasing section 80 is not provided, there is no need to take out the stimulable phosphor sheet 2 that is not subjected to the reading process out of the magazine 141, and the height position of the sheet 2 is set at the predetermined take-out position (that is, the height of the endless belt 53). When the height of the magazine holding part 140 reaches the position that aligns with the magazine 1
By raising or lowering the sheet receiving plate 41 by one pitch, the sheet 2 that does not require reading processing is placed in the magazine 1.
It is possible to keep it within 41.

Note that the above-mentioned erasing section 8o may not be particularly provided, and the above-mentioned erasing process may be performed by applying the magazine containing the stimulable phosphor sheet 2 after the radiation image information reading process to an erasing-only device. Furthermore, even when the erasing unit is incorporated into the radiation image information reading device of the present invention, its placement position is not limited to the position in the embodiments described above. It is also possible to arrange an erasing section near the longitudinal center of the.

Furthermore, since the stimulable phosphor sheet 2 held on the platen 1 is often in a somewhat curled state even after being removed from it, the stimulable phosphor sheet 2 is placed on the platen 1 in the sheet conveyance system. A conveying section that curves the stimulable phosphor sheet 2 in the opposite direction may be incorporated to remove curls from the stimulable phosphor sheet 2.

(Effects of the Invention) As explained above in detail, the radiation image information reading device of the present invention has the sheet conveying system placed close to and parallel to the portion where the platen of the reading section moves, and the magazine being placed in parallel with the portion where the platen of the reading section moves. By being placed close to the system, each of these elements can be grouped together in a small space, thus ensuring a reduction in size compared to conventional devices.

In addition, in the radiation image information reading device according to claim 1, the stimulable phosphor sheet that does not require reading processing is transported by a sheet transport system instead of being sent to the reading section; By doing the above in the radiation image information reading device, or by controlling the movement of the magazine using the magazine moving means and keeping the stimulable phosphor sheet that does not require reading processing in the magazine, it is possible to eliminate meaningless Reading processing can be omitted,
Therefore, speeding up of reading processing is realized.

Furthermore, in the radiographic image information reading device according to the second aspect of the present invention, only one magazine can be loaded, so that a particularly remarkable reduction in size is possible.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a radiation image information reading device according to a first embodiment of the present invention, FIGS. 2 and 3 are partial side views of the device of the above embodiment, and FIGS. 4 and 5 are the above FIG. 6 is a perspective view showing the main parts of the embodiment device; FIG. 6 is a front view showing the main parts of the embodiment device; FIG. 7 is a plan view showing a radiation image information reading device according to a second embodiment of the present invention. . ]...Platen 1a...Cylindrical surface 2...Stormative phosphor sheet 3...Screw rod 4.54, +54...Motor 8...Scanning optical system 9...He-Ne laser 10... Laser light 21... Spinner 22... Deflection mirror 22A... Spindle motor 23... Condensing lens 24... Stimulated light emission 25... Detection lens 26... Photo multiplier -30... Reading section 40... Supply magazine holding section 41... Supply magazine 42...
- Sheet exit 43.63.143... Lifting device 50.150... Sheet conveyance system 53... Endless belt 60... Storage magazine holding section 61... Storage magazine 62... Seat entrance a 1.171 ...First sheet delivery means 72...
-Second sheet delivery means 73...Third sheet delivery means 74...Fourth sheet delivery means 80...Erasing section 140...Magazine holding section 141...Magazine Fig. 2 7 1 shi 3 ('A1 Figure 4 Figure 5 6 [shi 1

Claims (2)

[Claims] (1) One stimulable phosphor sheet taken out from a magazine containing multiple stimulable phosphor sheets is held on a platen, and an excitation light beam is applied one-dimensionally to the stimulable phosphor sheet on the platen. At the same time, the platen is moved in a direction substantially perpendicular to the main scanning direction to perform sub-scanning of the excitation light beam, and the brightness emitted from the part of the sheet irradiated with the excitation light beam is detected. In a radiation image information reading device that photoelectrically detects exhaustion light, one end and the other end of the platen are located at a first stop position where the movement starts and a second stop position where the movement ends. A sheet conveying system is provided that is arranged close to each other and conveys the stimulable phosphor sheet from one end to the other end substantially parallel to the moving direction of the platen. A supply magazine storing the stimulable phosphor sheet is disposed close to one end of the sheet transport system, and a storage magazine storing the stimulable phosphor sheet from which image information has been read is located at the other end of the sheet transport system. a first sheet transfer means disposed adjacent to the supply magazine for transferring the stimulable phosphor sheet from the supply magazine to the sheet transport system; a second sheet delivery means for delivering the phosphor sheet; a third sheet delivery means for delivering the stimulable phosphor sheet from the platen at the second stop position to the sheet transport system; A radiation image information reading device characterized in that a storage magazine is provided with a fourth sheet delivery means for delivering the stimulable phosphor sheet. (2) One stimulable phosphor sheet taken out from a magazine containing multiple stimulable phosphor sheets is held on a platen, and an excitation light beam is applied one-dimensionally to the stimulable phosphor sheet on the platen. At the same time, the platen is moved in a direction substantially perpendicular to the main scanning direction to perform sub-scanning of the excitation light beam, and the brightness emitted from the part of the sheet irradiated with the excitation light beam is detected. In a radiation image information reading device that photoelectrically detects exhaustion light, one end and the other end of the platen are located at a first stop position where the movement starts and a second stop position where the movement ends. A sheet conveyance system is provided that is arranged close to each other and conveys the stimulable phosphor sheet between the one end and the other end substantially parallel to the moving direction of the platen, and the stimulable phosphor sheet A magazine for storing sheets is disposed close to the sheet conveyance system, and a first sheet transfer means for transferring stimulable phosphor sheets between the magazine and the sheet conveyance system; a second sheet delivery means for delivering the stimulable phosphor sheet to the platen at the first stop position; and a third sheet delivery means for delivering the stimulable phosphor sheet from the platen at the second stop position to the sheet transport system. a sheet delivery means; and a magazine moving means for moving the magazine in the sheet arrangement direction so that a portion where sheets are taken in and taken out is at a predetermined position. Information reading device.