JP2001270644A - Carrying device for sheet-like recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately arrange a sheet-like recording medium at a predetermined position and smooth work of carrying out the sheet recording medium in and out. SOLUTION: This carrying device comprises a pair of rollers 100a for carrying an accumulative fluorescent sheet S near a positioning member 90 while carrying it from near the positioning member 90, first thrusting means 110 for thrusting the accumulative fluorescent sheet S at one end 106a fed out of the pair of rollers 100a and arranging the accumulative fluorescent sheet S at the positioning member 90, and second thrusting means 112 for thrusting the accumulative fluorescent sheet S at the other end 106b and delivering the accumulative fluorescent sheet S from the positioning member 90 to the pair of rollers 100a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting a sheet-shaped recording medium for carrying a sheet-shaped recording medium into a predetermined positioning portion and unloading the sheet-shaped recording medium from the positioning portion.

[0002]

2. Description of the Related Art For example, stimulable phosphors (stimulable phosphors)
There is known a system that once records radiation image information of a subject such as a human body, reproduces the radiation image information on a photographic photosensitive material such as a photographic film, or outputs a visible image on a CRT or the like. I have.

The stimulable phosphor is composed of radiation (X-ray, α-ray, γ
(Rays, electron beams, ultraviolet rays, etc.), a part of this radiation energy is accumulated, and after irradiation with excitation light such as visible light, a phosphor that emits stimulated emission according to the accumulated energy is referred to. The stimulable phosphor is usually used as a sheet-shaped stimulable phosphor sheet (sheet-shaped recording medium) because of its easy handling.

In the above-mentioned system, for example, a photographing section for temporarily recording radiation image information of a subject on a stimulable phosphor sheet, and irradiating the stimulable phosphor sheet with the radiation image information recorded thereon with excitation light to emit the excitation light. A reading unit that photoelectrically reads the radiation image information, and an erasing unit that erases the radiation image information remaining on the stimulable phosphor sheet after reading are integrally incorporated, and the stimulable phosphor sheet is circulated or A so-called built-in type radiation image information reading apparatus that reciprocates is adopted.

Further, a loading section in which a stimulable phosphor sheet preliminarily recording radiation image information of a subject is loaded via a cassette or a magazine, and excitation light is supplied to the stimulable phosphor sheet taken out of the loading section. A radiation image information reading device incorporating a reading unit that irradiates the radiation image information and reads the radiation image information photoelectrically, and an erasing unit that erases the radiation image information remaining on the stimulable phosphor sheet after reading the radiation image information is provided. Used.

[0006]

In the above radiation image information reading apparatus, in order to prevent the recording surface from being damaged or stained,
A transport system is employed in which both sides of the stimulable phosphor sheet that are not used for image recording are nipped and transported by a pair of rollers.
However, in this type of roller pair, the stimulable phosphor sheet cannot be directly arranged at a predetermined positioning portion, for example, at a photographing position of a photographing unit. For this reason, usually, the stimulable phosphor sheet is delivered from the roller pair to the belt conveyor and conveyed to the photographing position of the photographing unit, and the stimulable phosphor sheet after photographing is completed is transferred to the roller pair via the belt conveyor. Delivery work is taking place.

However, since the stimulable phosphor sheet is conveyed by a belt conveyor that travels around, the stimulable phosphor sheet is supported by a stopper provided at a photographing position, and the belt conveyor is moved. The back surface (the surface opposite to the recording surface) of the stimulable phosphor sheet slides. As a result, dust such as sliding debris easily adheres to the back surface of the stimulable phosphor sheet, and it has been pointed out that high-quality radiation image information cannot be recorded on the stimulable phosphor sheet.

An object of the present invention is to solve this kind of problem by disposing a sheet-shaped recording medium at a predetermined position easily and surely and performing processing of the sheet-shaped recording medium with high accuracy. It is an object of the present invention to provide a sheet-like recording medium conveying device capable of performing the following.

[0009]

In the apparatus for conveying a sheet-like recording medium according to the present invention, when the sheet-like recording medium is conveyed into the vicinity of a positioning portion via the conveying means, the first pressing means moves the sheet-like recording medium. By pressing one end of the medium, the sheet-shaped recording medium can be reliably fed into the positioning portion. On the other hand, the other end of the sheet-shaped recording medium disposed at the positioning portion is pressed via the second pressing means, and after the sheet-shaped recording medium is transferred from the positioning portion to the conveying means, the transporting is performed. The sheet-shaped recording medium is unloaded under the action of the means.

As described above, the sheet-shaped recording medium is merely pressed at different ends via the first and second pressing means. For this reason, it is possible to effectively prevent the sheet-shaped recording medium from being stained due to the adhesion of dust and the like, as compared with a conventional apparatus using a belt conveyor.

Further, the first pressing means has at least one first pin member, and the first pin member is directly fixed to the first timing belt. Therefore, the configuration of the first pressing unit is effectively simplified, and the configuration is simple.
The positioning accuracy of the sheet recording medium is improved.

On the other hand, the second pressing means includes two second pin members for pressing both side edges of the sheet-shaped recording medium,
The second pin members are each directly fixed to the second timing belt. For this reason, the sheet-shaped recording medium disposed at the positioning portion can be reliably transferred to the conveying means, and the operation of conveying the sheet-shaped recording medium is efficiently and smoothly performed.

Further, the first and second timing belts are integrally driven via a single drive source.
Therefore, the drive system is effectively simplified and becomes extremely economical.

Further, the sheet-shaped recording medium is a stimulable phosphor sheet, and the conveying means includes a pair of rollers for nipping and conveying both sides of the stimulable phosphor sheet. Accordingly, it is possible to perform high-quality photographing processing on the stimulable phosphor sheet at a positioning portion, for example, a photographing unit without causing damage or dirt on the recording surface of the stimulable phosphor sheet. Become.

[0015]

FIG. 1 is a schematic perspective explanatory view of a radiation image information reading apparatus 10 in which a sheet-like recording medium conveying apparatus according to an embodiment of the present invention is incorporated, and FIG. FIG. 2 is a schematic explanatory diagram illustrating an internal configuration of the reading device 10.

The radiation image information reading apparatus 10 has an apparatus main body 14 disposed on a floor surface (installation surface) 12 and an imaging apparatus in which a subject, for example, a patient is directly placed in a lying position (side down position). A table 16 and an elevating mechanism 18 that raises and lowers the imaging table 16 with respect to the apparatus main body 14 are provided. Device body 1
4 includes a first main body 20 that accommodates the elevating mechanism 18 and a second main body 22 that is configured separately from the first main body 20. The second main body 22 includes a controller 24 and a switch. The unit 26 is connected.

As shown in FIG. 2, the lifting mechanism 18 includes a first
One end side of the main body 20 (the side separated from the second main body 22)
The first swing arms 30a and 30b are swingably supported via support shafts 28a and 28b, and a support shaft is provided at the other end of the first main body 20 (the side close to the second main body 22). 32a,
The second swing arm 3 which is swingably supported through the second arm 32b
4a and 34b. First swing arm 30a, 30
b and the tip of the swing of the second swing arms 34a and 34b are engaged with the bottom of the elevating base 38 constituting the imaging table 16,
The first swing arms 30a and 30b and the second swing arms 34a and 34b raise and lower the lifting base 38 via a hydraulic cylinder (not shown) controlled by a hydraulic unit 46.

A bellows member 48 having a dust-proof and light-shielding function is fixed to the upper part of the elevating base 38 and the upper part of the first main body part 20 so as to extend and contract. As shown in FIG. 1, the elevating base 38 has a top plate portion that can move forward and backward in the short direction (arrow X direction) of the first main body 20 and the arrow Y direction (longitudinal direction) perpendicular to the arrow X direction. 52 are provided.

A linear touch switch 54 is fixed along both sides of the top plate 52 in the direction of arrow X. The touch switch 54 controls ON / OFF of a lock unit (not shown) for locking the top panel 52. While the touch switch 54 is pressed, the top panel 52 is pressed.
Has been unlocked. The top plate 52 is provided with a protective cover member 56 located outside the touch switch 54.

As shown in FIG. 2, the elevating base 38 is provided with a photographing section 80 for temporarily recording radiation image information of a subject on a stimulable phosphor sheet (sheet-shaped recording medium) S, while the apparatus main body 14 is provided. A laser beam L as excitation light on the stimulable phosphor sheet S on which the radiation image information is recorded.
A reading section 82 for photoelectrically reading the radiation image information by irradiating the stimulable phosphor sheet S
And a circulating transport system (transport device) 86 for circulating, for example, the three stimulable phosphor sheets S in the radiation image information reading apparatus 10. .

As shown in FIG. 3, the stimulable phosphor sheet S
Are circulated and conveyed by sandwiching only the ears Sa and Sb provided on both sides thereof, and reinforcing plates 88a and 88b are fixed to the back side of the stimulable phosphor sheet S.

As shown in FIGS. 2 and 4, the photographing section 80 moves the stimulable phosphor sheet S to a photographing position (positioning portion).
A plurality of positioning members 90 for positioning at a predetermined position, and a holding plate 94 that is swingable through a fulcrum 92 and holds the stimulable phosphor sheet S to the photographing unit 80;
Guide members 96a, 96b, 98a and 98b for guiding the ear portions Sa and Sb of the stimulable phosphor sheet S are provided. In the vicinity of the entrance of the photographing unit 80, a circulating transport system 8 is provided.
A roller pair (transporting means) 100a constituting the roller 6 is disposed, and a roller pair 100b is provided at a predetermined distance from the roller pair 100a. Roller pair 100a,
100b is supported by the elevating base 38 and the elevating base 3
It moves up and down together with 8.

In the first main body 20, a plurality of roller pairs 102 constituting a circulating conveyance system 86 are arranged.
A roller pair 104 independent of the circulation conveyance system 86 is disposed in the second main body 22. Roller pair 100a, 100
b, 102 and 104 are configured to convey only the ears Sa and Sb of the stimulable phosphor sheet S.

As shown in FIG. 4 and FIG.
, One end 106a of the stimulable phosphor sheet S sent from the roller pair 100a is pressed in the direction of arrow C,
The first pressing means 110 for arranging the stimulable phosphor sheet S on the positioning member 90 and the other end 106b of the stimulable phosphor S arranged corresponding to the positioning member 90 are moved in the direction of arrow B. Second pressing means 1 for pressing and transferring the stimulable phosphor sheet S to the roller pair 100a
12 are provided.

First and second pressing means 110, 112
Are driven integrally via a single motor (drive source) 114. A drive pulley 118 is axially mounted on a drive shaft 116 of the motor 114, and a pulley 122 is engaged with a belt 120 engaged with the drive pulley 118.
A rotating shaft 124 to which one end of the pulley 122 is fixed extends and is supported in the width direction of the photographing unit 80. Rotary shaft 12
4, the first and second pressing means 110 and 112 are engaged.

The first pressing means 110 is provided with a first pulley 126 fixed at a substantially central portion in the width direction of the rotary shaft 124 and a second pulley 126 which is disposed at a predetermined distance from the first pulley 126 in the direction of arrow B. A pulley 128 and a first timing belt 1 meshing with the first and second pulleys 126 and 128
30 and a first pin member 132 directly fixed to the timing belt 130. A hole 134 is formed at a predetermined position of the first timing belt 130 so as to penetrate therethrough, and a first pin member 132 is fixedly penetrated through the hole 134.

The second pressing means 112 includes third pulleys 136a and 136b fixed at both end edges of the rotating shaft 124 and outside both sides of the pressing plate 94, and the third pulleys 136a and 136b. A fourth pulley 138a, 138b arranged at a predetermined distance in the direction of arrow C;
A second timing belt 140a, 140b meshing with the third pulleys 136a, 136b and the fourth pulleys 138a, 138b;
0a, 140b, the second pin member 142 directly fixed to
a, 142b. Second timing belt 140
a, 140b have holes 144a, 144 at predetermined positions.
b is formed therethrough, and the holes 144a, 144b
, The second pin members 142a and 142b are fixed therethrough.

As shown in FIG. 2, the circulating transport system 86 includes a vertical transport path 146 extending vertically from the photographing section 80,
A horizontal conveying path 148 extending horizontally from the lower end of the vertical conveying path 146 to the roller pair 104, and after the traveling direction is changed by 180 ° by the roller pair 104, the sheet passes through the reading unit 82 and is erased. And a switchback transport path 15 connected to the vertical transport path 146 by performing switchback after the traveling direction is changed by 180 ° at the tip of the inclined transport path 150.
2 is provided. In the switchback transport path 152,
A pair of rollers 154 that can rotate forward and backward is arranged.

The circulating transport system 86 has three stimulable phosphor sheets S.
As one standby position, a first standby position ST1 which is a setting position of the photographing unit 80, a second standby position ST2 arranged on the horizontal transport path 148, and a third standby position ST3 arranged on the erasing unit 84 are provided. Can be

The reading section 82 is provided in the second main body section 22. The sub-scanning and conveying means 160 for sub-scanning and conveying the stimulable phosphor sheet S in the horizontal direction (the direction of arrow A) is provided. A laser beam irradiating means (scanning light irradiating means) 162 for irradiating the stimulable phosphor sheet S with the laser beam L in a substantially vertical direction to perform main scanning, and irradiating the laser beam L with the stimulable phosphor sheet S First and second light condensing systems 164, 1 for photoelectrically reading stimulated emission light generated from S
66. The sub-scanning conveyance means 160 includes a first and second roller pair 168, 1 which are rotationally driven in synchronization with each other.
70.

The first light condensing system 164 includes a first light guide 172a disposed along the main scanning line at the irradiation position of the laser light L on the recording surface of the stimulable phosphor sheet S, and the first light guide 172a. And a first photomultiplier 174a mounted on an upper portion of the first photomultiplier 172a. The second condensing system 166 includes a second light guide 172b arranged along the main scanning line on the back surface side of the stimulable phosphor sheet S, and a second photo mounted on an end of the second light guide 172b. And a multiplier 174b.

The erasing section 84 includes a first erasing unit 190a arranged on the recording surface side of the stimulable phosphor sheet S and a second erasing unit 190b arranged on the back side of the stimulable phosphor sheet S. Prepare. In the first and second erasing units 190a and 190b, the erasing light sources 19 are respectively provided.
2a and 192b are arranged.

As shown in FIG. 1, the controller 24
Lamp group 200 having a plurality of lamps and display 2
02 and a shooting size display lamp group 204 with a switching key
And an operation panel 206 provided with the operation panel 206. When the power is turned on by operating a console (not shown),
When the photographing size is selected, the lamp groups 200 and 204
Are displayed on the display 202, and the ID number and patient name of the patient registered on the console, the imaging menu, and the like are displayed on the display 202.

The switch section 26 includes a first foot switch 210 for unlocking the top board 52 constituting the imaging table 16 in a horizontal direction and a lowering foot switch 210 for lowering the imaging table 16. A second foot switch 212, a third foot switch 214 for raising the imaging table 16, and a fourth foot switch 21 for emergency stop for forcibly stopping the elevating operation of the imaging table 16
6 is provided. The X-ray irradiating means 2 is provided above the top plate 52.
18 are arranged.

The operation of the radiation image information reading apparatus 10 thus configured will be described below.

First, an ID card in which ID information such as an ID number and a name of a patient are recorded is created, and the ID card is read by a console (not shown). In this console, the user selects an imaging part such as the chest and abdomen and an imaging menu. Further, a photographing size is selected as needed, and then the patient as a subject is photographed on the photographing table 16.
Place on top.

At this time, the height position (in the direction of arrow Z) of the imaging table 16 is adjusted according to the condition of the patient, the height of the patient, or the transport mode of a wheelchair or a stretcher. Specifically, when the operator steps on the second foot switch 212, the lifting base 38 moves downward via the hydraulic unit 46 constituting the lifting mechanism 18, and the imaging table 16 is lowered. On the other hand, when the operator steps on the third foot switch 214, the lifting base 38 supported by the first swing arms 30a, 30b and the second swing arms 34a, 34b moves upward, and the imaging table 16 is moved. To rise.

As described above, the height of the imaging table 16 is adjusted so that the patient can easily get on the top 52. And
In a state where the patient is lying on the top 52 in the recumbent position (lying position), the operator selectively operates the second foot switch 212 or the third foot switch 214 and the top plate 5.
Adjust the height of No. 2 to a height position that is easy to work. Further, the operator operates the first foot switch 210 or keeps the touch switch 54 provided on the top panel 52 ON to release the lock of the top panel 52.

Therefore, for example, while the operator keeps pressing the touch switch 54, the top plate 52 is moved forward, backward, left and right (arrow X
Direction and the arrow Y direction), and adjusts the height position of the patient so that the imaging region of the patient enters the irradiation frame by the X-ray irradiation unit 218. After the patient's imaging region is positioned, the hand is released from the touch switch 54, and the top plate 52 is locked immovably.

Next, the X-ray irradiating means 218 is driven, and the radiation image information of the patient is recorded (photographed) on the stimulable phosphor sheet S arranged in the photographing section 80. At this time, the other stimulable phosphor sheets S are placed in the second and third standby positions ST.
2, ST3.

After the stimulable phosphor sheet S has been subjected to the photographing process, as shown in FIG.
4 is rotated in the direction of arrow D, the drive pulley 118 fixed to the drive shaft 116 of the motor 114, the belt 12
0 and the rotating shaft 124 rotates via the pulley 122,
Third pulleys 136a and 136b provided on both ends of the rotating shaft 124 rotate. Third pulley 136
a and 136b include the second timing belts 140a and 1b.
40b is engaged with the third pulley 136a, 13
The rotation of 6b causes the second timing belts 140a and 140b to circulate in the direction of arrow F.

For this reason, the second timing belt 140
a, 140b, the second pin members 142a,
2b are both side edges of the other end 106b of the stimulable phosphor sheet S positioned and held by the positioning member 90;
That is, the ears Sa and Sb are pressed in the arrow B direction. Accordingly, as shown in FIG. 6, the stimulable phosphor sheet S is conveyed in the direction of arrow B away from the positioning member 90, and its leading end is held between the roller pair 100a.

On the other hand, the first pressing means 1
10, a first timing belt 130 meshing with the first pulley 126 and the second pulley 128 by the rotation of the rotary shaft 124 is indicated by an arrow G in FIG. Orbit in the direction.
As a result, the first pin member 132 fixed to the first timing belt 130 is changed in posture from the standing posture along the second pulley 128, and the stimulable phosphor sheet S
(See FIG. 6).

Further, the stimulable phosphor sheet S is rotated under the action of the pair of rollers 100a constituting the circulating transport system 86.
The ears Sa and Sb are pinched and taken out of the photographing unit 80, pinched by the pair of rollers 100b and 102 (see FIG. 3), and delivered from the vertical transport path 146 to the horizontal transport path 148. The stimulable phosphor sheet S includes a plurality of roller pairs 10.
The sub-scanning conveying means constituting the reading unit 82 after being conveyed from the first main body 20 to the second main body 22 under the action of the rotation of 2 and being changed upward by 180 ° through the roller pair 104. 160.

As shown in FIG. 2, the sub-scanning conveyance means 160
Then, the first and second roller pairs 168 and 170 are rotationally driven in synchronization under the driving action of a motor (not shown), and the stimulable phosphor sheet S is moved by the first and second roller pairs 1 and 2.
The ears Sa, Sb are sandwiched between the first and second ears 68, 170, and are conveyed in the sub-scanning direction in the direction of arrow A.

Here, the laser beam L is derived from the laser beam irradiating means 162 and is irradiated on the recording surface of the stimulable phosphor sheet S to perform main scanning. Thus, the stimulated emission light emitted from the recording surface side of the stimulable phosphor sheet S is photoelectrically read by the first condensing system 164, and is transmitted through the transparent base surface to transmit the stimulable phosphor sheet S. The stimulated emission light emitted from the back surface of the light-emitting device is photoelectrically read by the second light-collecting system 166.

The stimulable phosphor sheet S after the reading process
Is transported from the second main body portion 22 to the first main body portion 20 side,
The sheet is sent to the erasing section 84 along the inclined conveyance path 150. In the erasing section 84, the first and second erasing units 190
a, 190b constituting the erasing light sources 192a, 192b
The erasing light is applied to both surfaces of the stimulable phosphor sheet S through the irradiating device, and the erasing process of the radiation image information remaining on the stimulable phosphor sheet S is quickly performed.

The stimulable phosphor sheet S after the erasing process is sent to the switchback conveyance path 152 after changing the conveyance direction from the inclined conveyance path 150 downward by approximately 180 °. The roller pair 15 constituting the switchback transport path 152
4 is rotated in the reverse direction, so that the stimulable phosphor sheet S
Is the vertical path 1 from the switchback path 152.
The image is transferred to the imaging unit 80 via the pair of rollers 100a and 100b.

In the photographing section 80, the stimulable phosphor sheet S is carried in to the vicinity of the positioning member 90 via the roller pair 100a, and the motor 114 is turned on by the arrow E in FIG.
It is driven to rotate in the direction. For this reason, the first timing belt 130 travels around the rotating shaft 124 in a direction opposite to the direction of the arrow G, and the first pin member 132 fixed to the first timing belt 130 stands up from below. After the posture is changed to the posture, one end 106a of the stimulable phosphor sheet S is pressed in the direction of arrow C.

Thus, in the stimulable phosphor sheet S, the ears Sa and Sb are formed by the guide members 96a, 96b and 98.
It moves in the direction of arrow C while being guided by a and 98b, and the other end 106b side is supported by the positioning member 90 and positioned with respect to the photographing unit 80 (see FIG. 7). At this time, the second pin members 142a and 142b constituting the second pressing means 112 do not interfere with the movement of the stimulable phosphor sheet S by moving in the direction of arrow C.

As described above, in this embodiment, the roller pair 1
00a, only the ears Sa and Sb are pinched and the imaging unit 8
Stimulable phosphor sheet S conveyed to the vicinity of the photographing position 0
Is a first pin member 132 constituting the first pressing means 110
Is pressed and conveyed corresponding to the positioning member 90 of the photographing section 80 under the pressing action of, and is surely arranged at a desired photographing position. Therefore, compared to a conventional apparatus that conveys the stimulable phosphor sheet S on a belt conveyor, it is possible to effectively avoid contamination on the back side of the stimulable phosphor sheet S,
An effect is obtained that high-accuracy recording processing of radiation image information is reliably performed.

On the other hand, the stimulable phosphor sheet S after the photographing is completed
Is transferred to the roller pair 100a, the second pressing means 1
12. The second timing belts 140a and 140 constituting the second belt 12
The second pin members 142a, 142b fixed to the b press the ear portions Sa, Sb of the stimulable phosphor sheet S in the direction of arrow B. Therefore, the stimulable phosphor sheet S is conveyed in the direction of arrow B away from the positioning member 90, and the leading end thereof is reliably held by the roller pair 100a.

At this time, the first and second pressing means 110,
112 is driven integrally via a single motor 114, and has the advantage that the configuration is effectively simplified and economical. Further, holes 134 and 144a and 144b are formed through the first and second timing belts 130, 140a and 140b, and the first and second pin members 13 are inserted through the holes 134 and 144a and 144b.
2 and 142a, 142b are penetrated and fixed. Thereby, the configuration is simplified, the positioning accuracy of the first and second pin members 132, 142a, 142b is improved, and the stimulable phosphor sheet S is efficiently and reliably loaded into the photographing unit 80. And can be carried out.

In this embodiment, a bed-type imaging table 16 on which a patient is placed in a recumbent posture is provided, and a stimulable phosphor sheet S is circulated in the apparatus main body 14. 10 has been described as an example, a radiation image information reading apparatus of a type in which a patient performs imaging in a standing posture, and a radiation image information of a type in which this stimulable phosphor sheet S is loaded via a cassette, a magazine, or the like. It can also be applied to a reading device.

Further, as the sheet-shaped recording medium, a photographic photosensitive film on which an image is recorded may be used instead of the stimulable phosphor sheet. In this case, the image recording in which the image is directly recorded on the photographic photosensitive film is performed. An apparatus may be used. Furthermore, as a positioning part, it is possible to apply to various processing units other than the imaging unit 80.

[0056]

In the apparatus for conveying a sheet-like recording medium according to the present invention, the sheet-like recording medium sent from the conveying means is sent out to the positioning portion under the pressing action of the first pressing means, while the sheet is pressed by the second pressing means. The sheet-like recording medium is transferred from the positioning portion to the conveying means under operation. Therefore, with a simple configuration, the sheet-shaped recording medium can be accurately and reliably arranged at the positioning portion, and the sheet-shaped recording medium can be smoothly delivered to the transporting means.
As a result, it is possible to effectively prevent the sheet-shaped recording medium from being stained or damaged due to sliding, as compared with a conventional apparatus in which a sheet-shaped recording medium is carried in and out of a positioning portion using a belt conveyor. And the desired operation is performed with high accuracy.

[Brief description of the drawings]

FIG. 1 is a schematic perspective explanatory view of a radiation image information reading device in which a transport device according to an embodiment of the present invention is incorporated.

FIG. 2 is a schematic explanatory view showing an internal configuration of the radiation image information reading device.

FIG. 3 is a perspective view of a stimulable phosphor sheet.

FIG. 4 is a schematic perspective explanatory view of a photographing unit in which first and second pressing means constituting the transport device are incorporated.

FIG. 5 is an explanatory plan view of the photographing unit.

FIG. 6 is an operation explanatory view of the second pressing means.

FIG. 7 is an operation explanatory view of the first pressing means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Radiation image information reading apparatus 14 ... Device main body 16 ... Imaging stand 18 ... Elevating mechanism 20, 22 ... Main body part 24 ... Controller 26 ... Switch part 80 ... Imaging part 82 ... Reading part 84 ... Erasing part 86 ... Circulating conveyance system 88a , 88b
... Reinforcing plate 90 ... Positioning member 94 ... Holding plate 96a, 96b, 98a, 98b ... Guide member 100a, 168, 170 ... Roller pair 106a, 10
6b ... end 110, 112 ... pressing means 114 ... motor 124 ... rotating shaft 130, 140a, 140b ... timing belt 132, 142a, 142b ... pin member 160 ... sub-scanning conveyance means 162 ... laser beam irradiation means 164, 166 ... collection Optical system 172a, 17
2b: light guide S: stimulable phosphor sheet Sa, Sb: ear

Claims (4)

[Claims] A transport unit that transports the sheet-shaped recording medium into the vicinity of a predetermined positioning portion and transports the sheet-shaped recording medium out of the vicinity of the positioning portion; A first pressing unit that presses one end of the sheet-shaped recording medium and feeds the sheet-shaped recording medium to the positioning portion; and presses the other end of the sheet-shaped recording medium disposed at the positioning portion to form the sheet-shaped recording medium. And a second pressing means for transferring the recording medium from the positioning portion to the transporting means. 2. The transporting device according to claim 1, wherein the first pressing means directly presses at least one first pin member pressing one end of the sheet-shaped recording medium, and the first pin member directly contacts the first end member. A first timing belt to which the sheet-shaped recording medium is fixed, and wherein the second pressing means presses two side edges of the other end of the sheet-shaped recording medium; A sheet-shaped recording medium transport device, comprising: two second timing belts that are directly fixed. 3. The sheet conveying device according to claim 2, further comprising a single drive source for integrally driving said first and second timing belts. 4. The transport device according to claim 1, wherein the sheet-shaped recording medium is a stimulable phosphor sheet, and the transport unit is configured to record the stimulable phosphor sheet. A conveying device for a sheet-shaped recording medium, comprising: a pair of rollers for nipping and conveying both side portions outside the range.