JPH0560091B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a radiation therapy system in which an unexposed sheet-like recording medium, such as an X-ray photographic film or a stimulable phosphor sheet, is irradiated with radiation at a variable imaging position. Regarding the image shooting stand.

(Prior Art) In the simplest conventional standing radiographic imaging table, an operator places the sheet-like recording medium on an imaging table unit that is movable in the vertical direction and can be positioned at a desired height. After setting a holder such as a cassette or magazine, set the imaging stand unit at the desired height position and take a picture.After taking the picture, remove the holder from the imaging stand and place the recorded medium on the holder. Instead, an unexposed sheet-like recording medium is loaded again and the next photographing is performed. Such a photographing stand is unsuitable for continuous photographing because it is necessary to manually load and unload the recording medium into the photographing stand unit.

As a radiographic imaging platform suitable for continuous imaging, a transport path is provided with a pair of fixed transport means fixedly arranged at a distance from each other, and a movable imaging stage unit is provided between the pair of fixed transport means. , the unexposed recording medium is conveyed to the photographing table unit via one of the pair of fixed conveying means, and the exposed recording medium photographed by the photographing table unit is transferred to the pair of fixed conveying means. It is conceivable to discharge the liquid to the other one of the fixed conveying means. In this case, as the fixed conveying means, for example, conveying means each having a pair of conveying rollers are used, and the recording medium sent from one of the fixed conveying means is securely placed at the entrance of the photographing stand unit for the photographing. A first transport means is provided with a pair of rollers for taking the recording medium into the stand unit, and a pair of rollers is provided at the exit of the photographing stand unit for discharging the exposed recording medium to the other fixed transport means. A second transport means is provided.

According to the continuous radiographic imaging table described above,
The recording medium is automatically conveyed via one of the fixed conveying means to the photographing table unit which is movable between the pair of fixed conveying means, and the photographed recording medium is transferred from the photographing table unit to the photographing table unit which is movable between the pair of fixed conveying means. It can be automatically discharged to the other fixed conveyance means, thereby making it possible to automate continuous photographing.

However, when the recording medium is conveyed from the one fixed conveyance means to the photographing table unit, the leading edge of the sheet-like recording medium that has passed through the pair of rollers of the one fixed conveyor means continues to the photographing table unit. There are cases where the recording medium is not reliably transferred between the pair of rollers of the first conveying means, and similarly, when conveying the recording medium from the photographing table unit to the other fixing means, the recording medium provided on the photographing table unit is The leading edge of the recording medium that has passed through the pair of rollers of the second conveying means may not be transferred to the pair of rollers of the other fixed conveying means. And the second conveying means or the pair of rollers of the other fixed conveying means may cause damage such as bending.

(Objective) Therefore, an object of the present invention is to prevent damage to the recording medium and to prevent damage to the recording medium when the sheet-shaped recording medium is conveyed through the movable photographing platform unit between the pair of fixed conveyance means. An object of the present invention is to provide a radiographic imaging table that can be transported reliably.

(Structure and Effects) The present invention comprises (i) a pair of fixed conveyance means fixedly disposed on a frame member at a distance from each other; (ii)
The recording medium is disposed between the pair of fixed conveyance means so as to be movable between the pair of fixed conveyance means, and is configured to receive a sheet-like recording medium sent by one of the fixed conveyance means of the pair of fixed conveyance means. and an outlet for discharging the sheet-like recording medium to the other fixed conveyance means of the pair of fixed conveyance means, and a first conveyance for taking the sheet-like recording medium into the inlet. (iii) the means includes a photographing platform unit provided with a second conveying means for discharging the sheet-like recording medium at the outlet;
In order to sequentially guide the sheet-like recording medium sent by the pair of fixed transport means to the other fixed transport means via the first transport means and second transport means of the imaging platform unit, They are provided facing each other so as to sandwich the shaped recording medium therebetween, and are stretched over each of the pair of fixed conveyance means, the first conveyance means, and the second conveyance means, and both ends of each are attached to the frame member. The guide means includes at least one pair of band-shaped flexible guide members.

In the photographing platform according to the present invention, the pair of guides engages with each of the pair of rollers of each of the three conveying means, regardless of the position of the photographing table unit between the pair of fixed conveying means. By restricting movement in the thickness direction of the recording medium passing between the members, the leading edge of the recording medium is reliably guided between the pair of rollers of each successive conveying means.

Therefore, according to the present invention, the imaging platform unit can be moved without hindering movement of the imaging platform unit to a desired position according to the imaging region and without damaging the leading end of the sheet-like recording medium. It is possible to reliably transport the recording medium through the steps.

(Embodiments) The features of the present invention will become clearer from the following description of the illustrated embodiments.

As shown in FIG. 1, the photographing stand 10 according to the present invention includes a housing 12 that is L-shaped as a whole and has a horizontal bottom portion 12a and an upright portion 12b vertically rising from one side of the horizontal bottom portion. The upright portion 12b includes a photographing stand unit 16 disposed movably in the vertical direction within an elongated opening 14 extending in the vertical direction provided on the front surface of the upright portion 12b. The length of the opening 14 is large enough to allow the imaging platform unit 16 to move vertically with a stroke that exceeds the length of a sheet-like recording medium (not shown). In order to close the upper and lower portions of the photographing table unit 16 in the opening 14, the free ends of self-rolling blinds 18a and 18b arranged above and below the photographing table unit 16 close the upper end of the photographing table unit 16. and the lower end, respectively.

A holder 20 for accommodating the recording medium to be sent to the photographing stand unit 16 is disposed within the photographing stand unit 16. In the illustrated example, the holder 20 is a first plate member made of a material such as a synthetic resin with a low X-ray absorption rate and whose upper end is swingably supported on the photographing table unit main body 16a via a pivot shaft 22. 24, and the photographing stand unit main body 1
A second plate member 28 is supported by the photographing stand unit main body 16a via a shaft portion 28a that is received in an arcuate guide groove 26 provided on both sides of the photographing table unit body 16a. Both plate members 24 and 28 are interconnected via a pivot 32 to define a gap 30 between their lower ends for allowing passage of the recording medium. A lid member 34 for opening and closing the gap 30 is pivoted on the shaft portion 28a. Lid axis 3
4 is biased by a spring 36 toward a position in which the gap 30 is closed.

The shaft portion 28a is caused to reciprocate along the guide groove 26 between one end 26a and the other end 26b of the guide groove by using, for example, a crank device (not shown). When the shaft portion 28a is moved further toward the other end 26b from the position shown in FIG. 2, the lid member 34 is provided with a fulcrum by a stopper 38 provided on the photographing table unit main body 16a.
The gap 30 is opened by swinging around the fulcrum. When the shaft portion 28a is in the position shown in FIG. 2 and closer to the one end 26a of the guide groove 26 than the position shown in FIG. 2, the gap 30 is closed by the cover member 34. When the holder 20 receives the recording medium in the attitude shown in FIG. While being sandwiched between the members 24 and 28, the recording medium is held in a photographing position indicated by reference numeral A, which is close to and parallel to the front surface of the photographing stage unit 16. Further, when the recording medium is irradiated with X-rays, the shaft portion 28a is then moved toward the other end 26b of the guide groove 26, so that the holder 20 can move the irradiated recording medium to the It is discharged through the gap 30.

When the recording medium sent to the photographing table unit 16 is irradiated with radiation such as X-rays, α-rays, β-rays, or ultraviolet rays, it stores and records a portion of this radiation internally as image information, and then This is a stimulable phosphor sheet that exhibits stimulated luminescence according to a radiation image accumulated by being irradiated with excitation light such as visible light.

Near the upper edge of the opening 14, a first fixed conveying means 2a for feeding the sheet to the photographing table unit 16 is provided, and near the lower edge of the opening 14, a photographing table unit 2a is provided. a second fixed conveyance means 2 for receiving the sheet on which a radiation image has been accumulated and recorded by being irradiated with X-rays in step 16;
b is provided. The sheet on which the radiation image has been accumulated and recorded is sent to an image reading section 46 via a belt conveying device 40 provided in association with the second fixed conveying means 2b, and belt conveying devices 42 and 44 following the belt conveying device. . The sheet is exposed to excitation light 4 from an excitation light source in an image reading section 46.
8 scans and shows stimulated luminescence according to the accumulated radiation image information. This stimulated luminescence light is converted into an electrical signal for obtaining an image by a photoelectric reading device 50 such as a photomultiplier tube, and this electrical signal is displayed on an image display device such as a CTR, for example.
Alternatively, it is used to reproduce a visible image on a recording medium such as photographic film. The sheet, on which the radiation image information has been read by the image reading section,
Belt conveying devices 52, 54 and conveying rollers 56
The sheet is then sent to the erasing section 58, where the remaining radiation energy is released by light irradiation, heating, etc., and the sheet is returned to a reusable state. This sheet is sent via a conveyance roller 60 to a belt conveyance layer device 62 provided in association with the first stationary conveyance means 2a, and again via the first stationary conveyance means 2a to the photographing platform unit 16. sent to.

Refer to FIGS. 2 and 3 for details regarding the structure related to the conveyance path in which the sheet passes from the first fixed conveyance means 2a to the photographing platform unit 16 and then to the second fixed conveyance means 2b. I will explain.

A pair of upright internal members 64 are laterally spaced from each other and extend vertically along opposite sides of the opening 14 within the housing 12 and are connected to the first and second stationary conveying means. 2a, 2
b are arranged across the guide members 64 at the upper and lower parts of the guide members so as to be spaced apart from each other in the vertical direction.

The photographing table unit 16 disposed between both the fixed conveyance means 2a and 2b has a unit main body 16a.
via a pair of engaging parts 66 provided on both sides,
It is slidably engaged with the guide member 64 and can reciprocate in the vertical direction between both fixed conveying means 2a and 2b through a stroke exceeding the length of the sheet. A drive device 72, such as an electric motor, is secured via a bracket 70 to an upper frame member 68a disposed across the pair of upright internal members 64 and secured to the top of the guide members. A male threaded member 74 is fixed to the output shaft 72a of the motor 72 in series with the drive shaft. The male screw member 74 vertically passes through the photographing table unit 16 and is screwed into a female screw member 76 fixed to the top of the photographing table unit. Therefore, by controlling the operation of the drive device 72, it is possible to move the imaging platform unit 16 to a desired height position between the fixed conveyance means 2a and 2b and to position it at the desired height position. can.

At the entrance 78a (see FIG. 2), which is the upper end opening of the photographing table unit 16, there is a first conveying means 6a for receiving the sheet sent toward the entrance and conveying the sheet to the holder 20. An outlet 78b (see FIG. 2), which is the opening at the lower end of the photographing platform unit 16, is provided with an outlet 78b (see FIG. 2) for discharging the sheet released from the holder 20 toward the second fixed conveyance means 2b. A second transport means 6b is provided. Further, in the illustrated example, between the holder 20 and the second conveying means 6b, there is provided an auxiliary conveying means for directing the sheet discharged from the gap 30 of the holder 20 toward the second conveying means 6b. Three conveyance means 6c are provided.

When the photographing platform unit 16 moves to a position close to either the first or second fixed transport device 2a, 2b, the fixed transport means 2b, 2a located on the opposite side and the fixed transport means A gap exceeding the length of the sheet is created between the adjacent first or second conveying means 6b, 6a, making it difficult to convey the sheet smoothly. In order to prevent this, relay conveyance means 8a and 8b are provided between the fixed conveyance means 2a and 2b, which are respectively disposed on the entrance 78a and exit 78b sides of the photographing unit 16.

In the illustrated example, each fixed conveyance means 2a, 2b, each conveyance means 6a, 6b, 6c, and each relay conveyance means 8a, 8b each includes a pair of rollers 80. Each roller 80 has a roller main body 80b having a uniform outer diameter along its shaft portion 80a, the outer diameter of each roller main body 80b is approximately equal, and the length dimension of each roller main body 80b is That is, it is smaller than the width dimension of the sheet. A pair of pulleys 82 having an outer diameter smaller than the outer diameter of the roller body 80b are arranged on the shaft portion 80a of each roller 80 except one roller of the third conveying means 6c on both sides of the roller body 80b. has been done. A pair of pulleys 82 of each roller 80 are supported by the shaft portion so as to be rotatable with respect to the roller main body 80b with an interval smaller than the width of the sheet. Further, each of the transport means 2a, 2b, 6
A sprocket 84, which is an engaging part, is fixed to one end of the shaft part 80a of one of the rollers 80 in a, 6b, 6c, 8a, and 8b, and the outer diameter of the sprocket, that is, the pitch circle, is the outer diameter of the roller body. approximately equal to the diameter.

The shaft portion 80a of each roller 80 of the first fixed conveyance means 2a is supported by the upper frame member 68a via an upper bracket 86a, and the shaft portion 80a of each roller 80 of the second fixed conveyance means 2b is supported by the upper frame member 68a via an upper bracket 86a.
is supported on the lower frame member 68b via a lower bracket 86b. Further, the shaft portions 80a of the rollers 80 of the first to third conveying means 6a to 6c are arranged on both sides of the photographing table unit main body 16a so that the sprocket 84 is located outside the photographing table unit 16. Supported.

For each relay conveyance means 8a and 8b, one support member 88a and 88b is provided above and below the photographing platform unit 16, respectively, and is guided in the vertical direction by the pair of straight inner members 64. There is. The upper support member 88a supports each shaft portion 80a of the pair of rollers 80 of the upper relay conveyance means 8a, and the lower support member 88b supports each shaft portion 80a of the pair of rollers 80 of the lower relay conveyance means 8b.
is supported. Both support members 88a and 88
b are mutually connected via a connecting member 90, whereby both relay conveyance means 8a and 8b
are movable integrally with each other in the vertical direction.

the photographing table unit 16 or first and second conveying means 6a provided on the photographing table unit;
6b and the relay conveyance means 8a, 8b, spacers 92 are provided on the upper and lower surfaces of the imaging platform unit 16, respectively, so that they can abut on the upper support member 88a and the lower support member 88b. In order to prevent interference between each fixed conveyance means 2a, 2b and relay conveyance means 8a, 8b,
An upper support member 88 is provided on the lower surface of the upper bracket 86a and the upper surface of the lower bracket 86b, respectively.
A spacer 94 is provided that can come into contact with the lower support member 88b and the lower support member 88b.

When the photographing table unit 16 is moved upward by the operation of the driving device 72, when the spacer 92 of the photographing table unit 16 comes into contact with the support member 88a, both relay conveying means 8a and 8b move the photographing table unit 16 upwardly. It is taken to the base unit 16. The connecting member 90 connects both relay conveyance means 8a and 8b.
When the photographing platform unit 16 is closest to one of the fixed conveying means 2a or 2b, the length dimension of the intermediate conveying means 8b or 8a adjacent to the other fixed conveying means 2b or 2a is
and the distance between the relay conveyance means and the conveyance means 6b or 6a adjacent to the relay conveyance means are set to be equal to or less than the length of the sheet. Therefore, regardless of the height position of the photographing platform unit 16, the interval between adjacent conveying means is variable, that is, the interval between adjacent conveying means is variable.
The distance between the fixed conveyance means 2a and the relay conveyance means 8a,
an interval between the relay conveyance means and the first conveyance means 6a;
The distance between the second conveyance means 6b and the relay conveyance means 8b, and the distance between the relay conveyance means and the fixed conveyance means 2b are always equal to or less than the length of the sheet.

Shaft portion 80 of one roller 80 of each of the conveying means
A chain 96, which is an endless drive transmission member, is arranged around each sprocket 84 provided at the sprocket 84. As shown in FIG. 3, in order to ensure that the chain 96 engages with the sprocket 84 of the auxiliary conveying means 6c, which is located at a position deviated from the linear sprocket row, the path of the chain is changed. Idling sprocket 8 for partial change
4' is provided. An output shaft 98a of a drive device 98, such as an electric motor, is coaxially coupled to the shaft portion 80a of one of the rollers 80 of the fixed conveyance means 2b. The rotational force of the drive device 98 is applied to the pair of rollers 80 of each conveying means via the chain.
can be conveyed to one side. As a result, the pair of rollers of each conveying means are rotated so as to convey the recording medium downward in the figure through mutual cooperation.

Guide means including a pair of band-shaped guide members 100 that engage with the pulley 82 are arranged on both sides of the roller body 80b of each roller 80. The guide member 100 is made of, for example, a narrow belt member having flexibility, and is connected to the pair of rollers 8.
In order to restrain the movement of the sheet conveyed between 0 and 0 in the sheet thickness direction, as clearly shown in FIG. , 6b, 8a, 8b.
The two parts are engaged with the corresponding pulleys and stretched. The upper ends of the pair of guide members 100 provided on both sides of the roller body 80b are respectively fixed to the upper frame member 68a so that the distance between them gradually increases toward the tip, and Each lower end of the guide member 100 is fixed via a spring member 102 for applying tension to the lower frame member 68b so that the distance between them gradually increases toward the tip.

Referring to FIG. 3, a pair of guide members 10 are provided on each side of the roller main body 80b.
One of the guide members 100a of 0 does not engage with the one roller 80 of the auxiliary conveyance means 6c, and the other guide member 100b does not engage with the other roller 80 of the auxiliary conveyance means 6c, that is, the roller 80 of the auxiliary conveyance means 6c. Engages with pulley 82. Both guide members 100,
100a and 100b are both transport means 6a and 6
a holder 2 disposed between both conveyance means between b.
The mutual spacing is increased by a guide member, that is, a plurality of idle pulleys 104 to prevent interference with the idler pulleys 104.

In the photographing table 10, each of the transport means 2a, 2b, 6a, 6b, 6c, 8a,
When the rollers 80 of 8b are driven simultaneously, the unexposed or recycled sheet sent between both rollers 80 of the upper fixed conveyance means 2a is transferred between both rollers 80 of the upper relay conveyance means 8a. The first transport means 6a provided at the entrance 78a of the imaging platform unit 16 at a desired height position
The image is sent between both rollers 80 and taken into the photographing table unit 16 by these rollers.

When conveying the sheet from the upper fixed conveying means 2a to the photographing table unit 16, as described above, regardless of the height position of the photographing table unit 16, the upper relay conveying means 8a, the upper fixed conveying means 2a and The distance from the first conveyance means 6a always does not exceed the length of the sheet. Therefore, the sheet is transferred to at least one of the pair of rollers 80 of the upper fixed conveyance means 2a, the pair of rollers 80 of the upper intermediate conveyance means 8a, and the pair of rollers 80 of the first conveyance means 6a.
Since the sheet is conveyed to the subsequent conveying means while being held by the sheet, the sheet is not damaged by free fall during this conveyance.

The sheet that has passed through the first conveyance means 6a is
As described above, when the sheet is irradiated with X-rays for photographing while being held in the holder 20, the sheet passes through the gap 30 of the holder 20 and is released between the rollers 80 of the auxiliary conveying means 6c. and is sent from the auxiliary conveyance means between a pair of rollers 80 of the second conveyance means 6b. The sheet sent to the second conveying means 6b is transferred to the outlet 78b.
The photographic material is then discharged from the photographing table unit 16, passes between both rollers 80 of the lower relay conveyance means 8b, and is sent to between both rollers 80 of the lower fixed conveyance means 2b.

When conveying the sheet from the photographing platform unit 16 to the lower fixed conveying means 2b, as described above, regardless of the height position of the photographing table unit 16, the lower intermediate conveying means 8b and the lower fixed conveying means 2b
And the distance from the second conveyance means 6b always does not exceed the length dimension of the sheet. Therefore,
Since the sheet is held by at least one of the second conveyance means 6b, the lower relay conveyance means 8b, and the lower fixed conveyance means 2b, and is conveyed to the subsequent conveyance means, the sheet is No damage is caused by free fall during this transport.

Therefore, when the sheet is conveyed through the photographing table unit 16, it is possible to reliably convey the sheet without damaging the sheet, and the height of the photographing table unit is reduced between the pair of fixed conveying means. The imaging position can be freely selected, thereby making it possible to move the imaging platform unit to an imaging position according to the imaging region.

Further, since the outer diameter of each roller 80, that is, the outer diameter of the roller body 80a, is approximately equal, and the pitch circle diameter of the sprocket 84, which is the engaging portion of the roller 80, is approximately equal to the outer diameter of the roller body 80a,
For example, when the sheet is conveyed from the upper fixed conveyance means 2a to the first conveyance means 6a via the upper intermediate conveyance means 8a, the sheet is conveyed to each of at least two of these three conveyance means. The photographing platform unit is moved while being transported while being simultaneously held by the rollers 80;
Further, even if the relay conveyance means moves in accordance with the movement of the photographing table unit, the speed at which the sheet is conveyed by the rollers 80 of each conveyance means when viewed from a stationary system is the same. Therefore, even if the photographing table unit is moved to adjust the height while the sheet is being conveyed, the pulling force between the conveying means is applied to the sheet due to the movement of the photographing table unit. There is no action and no deflection is applied to the recording medium. Therefore, even while the sheet is being conveyed between the fixed conveyance means, the position of the photographing stand unit can be adjusted without damaging the sheet. In this embodiment, the outer diameters of each roller 80 are approximately equal; however, if the outer diameter of each roller and the pitch circle diameter of the engaging portion of the roller are equal, the outer diameter between each roller is approximately the same. They may have different diameters.

Next, the relationship between the outer diameter of each roller 80 and the pitch diameter of the sprocket 84 will be described in detail. Assuming that the outer diameter of each roller 80 is D and the pitch circle diameter of the sprocket 84 is d, and that the two are not equal, the following equation V'=(V-v)D/d+v (1) holds true. Here, V and V' are the speed of the chain and the transport speed of the sheet by the roller 80, respectively, as seen from the stationary system, and v is the speed of the sheet conveyed by the roller 80.
In other words, the upward or downward movement speed of the roller 80 is shown relative to the stationary system. The first term on the right side of equation (1) represents the circumferential flux of the roller 80 seen from the motion system, and equation (1) is expressed as the following equation: V'=VD/d-(1-D/d)v
... can be rewritten as (1′). As is clear from equation (1'), when D/d=1, that is, roller 8
By making the outer diameter of the sprocket 84 equal to the pitch diameter of the sprocket 84, the speed of the chain seen from the stationary system and the speed of conveying the sheet by the roller 80 can be adjusted regardless of whether the roller 80 moves upward or downward. can be made equal. roller 80
The error between the outer diameter of the sprocket 84 and the pitch circle diameter of the sprocket 84 is preferably ±2% or less.

Further, in the photographing table according to the present invention, even when the photographing table unit 16 is moving, the guide members 100, which are arranged in pairs on both sides of the roller 80, are arranged in pairs on both sides of the roller 80. Since the sheet being sent between the members 100 is restrained from moving in the sheet thickness direction at both sides thereof, the leading edge of the sheet is reliably guided between both rollers 80 of each of the following conveying means. . Therefore, the recording medium can be moved through the imaging platform unit without hindering the movement of the imaging platform unit to a desired position according to the area to be imaged, and without damaging the leading end of the sheet-shaped recording medium. Reliable transportation is possible.

In the above description, an example has been described in which one transport relay means is provided above and below the photographing stand unit, but the transport relay means can be made unnecessary. However, depending on the stroke of the imaging stand unit, it is preferable to provide a plurality of sets of relay conveyance means depending on the stroke. Further, a belt-shaped member such as a timing belt may be used as the drive transmission member, and the engagement portion that engages with the drive transmission member may be replaced by a sprocket, for example, a gear.

As each roller 80 in each of the conveyance means,
A roller having a roller main body 80b with a length exceeding the width of the recording medium can be used. In this case, instead of the pulleys provided on both sides of the roller body, pulleys are formed near both end portions of the roller body at intervals from each other in the axial direction of the roller body, and are adapted to receive the corresponding guide members. An annular groove may be formed surrounding the roller body in its circumferential direction. Furthermore, one of the pair of guide members provided on each of both sides of the roller main body 80b can be made unnecessary. Furthermore, each of the guide members 100 was fixed to the frame member via the spring 102, but the spring 102 is
The spring may be placed in the middle of 0, or the spring may be omitted altogether.

According to the present invention, as described above, no matter where the photographing platform unit is located between the pair of fixed conveying means, the pair of guide members passing between the pair of rollers of each of the conveying means are arranged between the pair of fixed conveying means. The movement in the thickness direction of the recording medium passing through is restrained, so that the leading edge of the recording medium is reliably guided between the pair of rollers of the subsequent conveying means. It is possible to reliably transport the recording medium through the photographing table unit located at a desired position according to the region to be photographed without damaging the leading end of the recording medium.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a photographing table according to the present invention, and FIGS. 2 and 3 are a front view and a side view respectively showing the photographing table according to the present invention with its housing removed and partially enlarged. It is a diagram. 2 (2a, 2b): fixed conveyance means, 6 (6a,
6b, 6c): Transport means for photographing stand unit, 1
6: Photographing stand unit, 20: Holder, 46: Image reading section, 50: Photoelectric reading device, 60: Erasing section, 68a, 68b: Frame member, 78a:
Inlet, 78b: Outlet, 80: Roller, 82: Pulley, 84: Sprocket, 96: Chain, 10
0 (100a, 100b): Guide member, 102:
spring member.

Claims (1)

[Scope of Claims] 1. (i) a pair of fixed conveyance means fixedly disposed on the frame member at intervals; and (ii) a connection between the pair of fixed conveyance means; An entrance that is movably arranged to receive a sheet-like recording medium sent by one of the pair of fixed conveyance means, and the other fixed conveyance means of the pair of fixed conveyance means. a first conveying means for taking in the sheet-like recording medium into the inlet, and a first conveying means for taking the sheet-like recording medium into the inlet; (iii) the sheet-shaped recording medium sent by the pair of fixed conveyance means is transferred to the first conveyance means and the second conveyance means of the photographing table unit; and each of the pair of fixed conveying means, the first conveying means, and the second conveying means are provided facing each other so as to sandwich the sheet-like recording medium in order to sequentially guide the sheet-like recording medium to the other fixed conveying means. a guide means comprising at least one pair of band-shaped flexible guide members, each of which is stretched over the frame member and has both ends attached to the frame member. 2. The radiographic imaging stand according to claim 1, wherein the first conveying means and the second conveying means each include a pair of rollers, and each of the pair of fixed conveying means includes at least one pair of rollers. . 3. Radiographic imaging according to claim 2, wherein the pair of guide members are provided in two sets with an interval smaller than the width dimension of the recording medium in the axial direction of each of the rollers. The stand. 4. Each of the rollers includes a roller main body and a pair of pulleys arranged at both ends of the roller main body with an interval smaller than the width dimension of the recording medium so as to sandwich the roller main body. The radiographic imaging stand according to claim 3, comprising a pair of pulleys that are provided coaxially and rotatably with respect to the roller body and that are engaged with the guide member. 5. The radiographic imaging stand according to claim 3, wherein each of the rollers has an annular groove formed around the circumferential direction of the roller to engage with and receive the guide member. 6. The pair of guide members are arranged such that the distance between the ends thereof gradually increases toward the tip, and at least one end of each guide member is attached to the frame via a spring member.
A radiographic imaging stand according to claim 4 or 5. 7. The imaging platform unit is arranged between the first conveying means and the second conveying means, and the photographing platform unit is arranged between the first conveying means and the second conveying means,
a holder for holding the sheet-like recording medium carried in by the conveyance means at the photographing position;
7. The radiographic imaging table according to claim 6, wherein the guide means are spaced apart from each other by a guide member at a position corresponding to the holder to prevent interference with the holder. 8. According to claim 7, the sheet-like recording medium is a stimulable phosphor sheet that exhibits stimulated luminescence according to a radiation image accumulated and recorded by irradiation with excitation light. radiographic imaging table. 9. The stimulable phosphor sheet that has passed through the other fixed conveyance means is transferred to an image reading section for reading radiation image information recorded on the stimulable phosphor sheet in the imaging platform unit, and the stimulable phosphor sheet that has passed through the image reading section. Claim 8, wherein the stimulable phosphor sheet is returned to the one fixed conveyance means through an erasing section for releasing residual radiant energy.
The radiographic imaging table described in Section 1. 10 The image reading unit includes an excitation light source for irradiating the stimulable phosphor sheet with excitation light in order to obtain stimulated luminescence according to the radiation image recorded on the stimulable phosphor sheet, and an excitation light source for irradiating the stimulable phosphor sheet with excitation light. 10. The radiographic imaging stand according to claim 9, comprising a photoelectric reading device for optically reading the stimulated luminescence light from the body sheet to obtain an image signal.