JPS60239735A - Radiodiagnostic device - Google Patents

Abstract

PURPOSE:To improve the precision of stop position by providing circular bending parts in both end parts in the carrying direction of carrying belts which hold a phosphor sheet between themselves and carry it in a holder part and giving a tension to the front end and the rear end of the phosphor sheet by bending parts. CONSTITUTION:When the front end and the rear end of a carried phosphor sheet IP11 reach bending parts 59 and 59 in both ends, the IP11 is stopped. Since a tension is applied in both bending parts 59 and 59 in this case, the IP11 carried by upper and lower belts 51 and 52 is stopped accurately in a prescribed stop position, and this position is not slipped. Consequently, the IP11 stopped in this prescribed stop position is moved to a prescribed photographing position without positional slippage. Since tensions of the upper belt 51 and the lower belt 52 which hole the IP11 between themselves are varied by fitting shafts of tension rolls 56a, 56b, 57a, and 57b into proper bearing parts 190 or 190A, optimum tensions are attained by adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention belongs to the field of medical equipment for diagnosis, and more specifically, for example, a stimulable phosphor sheet for recording and reproducing radiation images. The present invention relates to a radiological diagnostic apparatus that continuously performs radiographic imaging.

[Technical background of the invention and its problems] Certain types of phosphors are exposed to radiation (X-rays, α-rays, β-rays.

When the phosphor is irradiated with Y-rays, ultraviolet rays, etc., part of the energy of this radiation is accumulated in the phosphor, and then when the phosphor is irradiated with excitation light such as visible light, it is accumulated and, depending on the f energy, The phosphor exhibits stimulated luminescence. A phosphor exhibiting such properties is called a stimulable phosphor.

Using this stimulable phosphor, radiation image information transmitted through the human body, etc. is recorded on a sheet of stimulable phosphor, which is then scanned with excitation light to produce stimulated luminescence. A method has been proposed in which the image signal is read out to obtain an image signal, and the image signal is processed to obtain an image suitable for diagnosis.

This final image may be reproduced as a hard copy or on a CRT. In such a radiation image recording and reproducing method, a stimulable phosphor sheet (strictly speaking, in addition to a panel-shaped sheet, a drum-shaped sheet, etc.) is used.
It can take various forms, but here they are collectively referred to as:
This will be referred to as the "image plate" and will be referred to as I.
It will be abbreviated as P. ) has the property of being able to be reused approximately 1,000 times by performing readout irradiation for photostimulation after radiography, and after the recorded image is read out, it is considered to be highly economical. , has come to be used in radiological diagnostic equipment.

By the way, as a means for conveying the IP to a predetermined photographing position, it is known to use a conveyor belt to grip and convey both the front and back sides of the IP. If this conveyance path is flat, when the conveyor belt is stopped at the photographing position, the frictional force of the gripping conveyor belt is weak, so the IP
There is a problem in that it is difficult to stop the IP, and proper photographing cannot be performed due to a shift in the stopping position of the IP.

[Object of the Invention] The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a radiological diagnostic apparatus in which there is no positional deviation of the IP at the imaging position by improving the accuracy of the stop position.

[Summary of the Invention] In order to achieve the above-mentioned object, the outline of the present invention is to convey a stimulable phosphor sheet by sandwiching it between endless conveyor belts, guide it to an imaging position in a part of a holder, and provide it for radiography. In the radiological diagnostic apparatus, an arcuate bent portion is provided at both ends in the conveyance direction of a conveyor belt that holds and conveys the phosphor sheet in a portion of the holder, and the front and rear ends of the phosphor sheet are bent at the bent portions. It is characterized by applying tension to.

[Embodiments of the Invention] Hereinafter, embodiments of the radiological diagnostic apparatus of the present invention will be described with reference to the drawings.

For example, the radiological diagnostic apparatus 1 shown in FIG. 1 includes an X-ray tube 2 for irradiating X-rays to a subject (patient),
A top plate 3 is placed below the X-ray tube 2 for placing the subject; a spot shot device 4 is placed below the top plate and includes an IP transport path; It consists of an image system 5 including an image intensifier that converts X-rays that have passed through a specimen into electrical signals. Incidentally, from the X-ray tube 2, X-rays are emitted to transfer a transmitted image of the subject onto the IP, and X-rays are transmitted through the image intensifier to display the transmitted image on a display (not shown). Two types of X-rays are emitted.

The spot shot device 4 shown in FIG. 2 is roughly divided into a supply section 10 that takes out and supplies an image plate (hereinafter abbreviated as IP) 11, a secondary erasing section 20 that erases the noise of the extracted IPll, and a erased IPl
A special equipment section 30 that transports the IPll and makes it standby once, a light shielding part 40 that blocks the light from the secondary erasing section 20, and a special equipment section 30 that transports the IPll that is once on standby in the special equipment section 30 to the photographing position. Holder part 50 to hold and photographed I
It is composed of a storage section 60 that transports and stores the Pll.

The supply unit 10 includes a feed magazine 12 in which IPlls are stacked and set, and a feed magazine 12 in which IPlls are stacked and set, and
I is placed above I and from within the feed magazine 12.
a pair of suction parts 13A for taking out the PLL one by one;
13B and a vacuum pump 14, and a delivery member 19 that guides the 1P11 taken out by the removal mechanism 15 in the transport direction. Further, the secondary erasing unit 20 includes a secondary erasing device 23 having a light emitting lamp 22 that irradiates light when the IPll sent out from the sending member 19 passes above.

The special equipment section 30 includes a second motor M2 (details will be described later).
It has an outer belt 31 and an inner belt 32 that are driven by the outer belt 31 and the inner belt 32, and a standby sensor 36, which is a second sensor, is arranged on the downstream side of the outer belt 31 and the inner belt 32.

The light shielding section 40 includes a guide 41, a light shielding roller 42, and a light shielding plate 4.
3a and 43b, and a flaw detection device 48 is arranged near the light shielding roller 42.

The holder part 50 has an upper belt 51 and a lower belt 5 driven by a third motor M3 (details will be described later).
2, and a position sensor 58, which is a third sensor, is arranged in the middle of the conveyance of both belts 51 and 52. Further, this holder part 50 is attached to the guide shaft 1 as shown in FIG.
82.182 in the direction of the arrow shown in the figure (from the front side of the drawing to the back side in FIG. It is supposed to be done. Incidentally, above this imaging position B are the top plate 3 on which the patient is placed, and
A radiation tube 2 is arranged, and the image system 5 is arranged below the imaging position B. After the photographing of the IPll is completed, the holder portion 50 is returned to the initial position A, and the IPll is delivered to the storage section 60. In addition, in Fig. 3, limit switch 1
83 is a switch that detects that the holder part 50 has returned to the initial position A, and a limit switch 184 is a switch that detects that the holder part 50 b has reached the photographing position B. Note that the means for detecting the arrival at the photographing position B may be a rotary encoder that detects the rotational output of a fifth motor M5, which will be described later.

The storage section 60 includes a drive belt 61 for transporting the photographed IPll, a drive roller 62 in close contact with the drive belt 61, a feeding mechanism section 63, a take-up magazine 65 for storing the photographed IPll, and a take-up magazine 65 for storing the photographed IPll. A presser plate 66 supported above the magazine 65 and a pressing mechanism section 6 that pushes the IPll into the pick-up magazine 65.
7, and a barcode reader 70 that reads the barcode of the IPll.

Next, the outline of the control system of the X-ray diagnostic apparatus will be explained with reference to FIG. FIG. 4 is a block diagram showing a schematic configuration of the control system. In the figure, what is indicated by 201 is a sequence control unit that sequentially controls each control unit based on commands from each sensor, etc., which will be described later. The suction unit drive control unit 202 controls the pair of suction units 13A in the supply unit 10,
13B, and a pair of suction parts 13
Based on the output signal of the first sensor (details will be described later) 116 that detects the positions of the parts A and 13B,
The first motor M1 in No. 5 is driven to rotate reversibly. Further, the vacuum pump control section 203 controls the pair of suction sections 13A.
, 1'3B controls the driving of the vacuum pump 14 that executes the IPll adsorption operation. The lamp control unit 204 controls the secondary eraser 23 in the secondary eraser 20.
This is to feedback control the effective current of. 1st
The conveyor belt drive control unit 205 controls the outer belt 31 . The drive of the inner belt 32 is controlled by switching between two speeds, and the drive and stop of the inner belt 32 is controlled. When receiving IPll from the secondary erasing section 20, the first conveyor belt drive control section 205 controls the drive of the second motor M2 in synchronization with the sending means 19, The drive is stopped based on the output signal of sensor 2) 36. after that,
After a predetermined period of time has elapsed, the second motor M2 is driven at high speed to supply IPll to the holder portion 50. The second conveyor belt drive control section 206 controls the upper belt 51 and the lower belt 52 in the holder part 50.
It is used to drive and control the That is, the third motor M
3 to control the transport and stop of the IPll in the holder part 50. This second conveyance belt drive control unit 206 inputs the position information of the conveyance tip of the IPll during conveyance from the position sensor 58 as the third sensor,
Rotation information from a rotary encoder 117 fixed to the motor shaft of the third motor M3 is input, and based on these inputs, the third motor M3 is controlled to stop the IPll at a predetermined photographing position. It has become. Then, when the limit switch 183 detects that the holder part 50 has moved to the imaging site and then returned to its original position, the third motor M3 is driven to
is supplied and conveyed to the storage section 60. Also,
When the flaw detection device 48 detects a flaw on the surface of the IPII, the second conveyor belt drive control unit 206 controls a third conveyor belt drive control unit 206 to guide the IPII to the storage unit 60 without stopping the IPII at the photographing position. The motor M3 is set to the drive side. Note that the drive belt 61 and the feed mechanism section 63 in the storage section 60 are driven by a sixth motor (not shown). The sliding drive control section 208 controls the sliding member 181. ．． The fifth motor M5, which is the driving means of the motor 181, is driven and controlled. This sliding drive control unit 208 drives the holder part 50 from the initial position A to the imaging position @B when an exposure-resistant lead (not shown) is pressed down, and after X-ray exposure is performed, the holder part 50 is 50 is returned to the initial position A. The sliding drive control unit 208 irradiates X-rays after detecting that the IPII has reached the imaging position based on the output of the limit switch 184, and when the X-ray irradiation is finished, a part of the holder is removed. 50 is returned to the initial position A. The presser plate movement control section 207 controls the reversible rotation of the fourth motor M4, which is a driving means for the pressing mechanism section 67 in the storage section 60, and by controlling the drive of the fourth motor M4. The presser plate 66 is driven, the barcode reader 70 is scanned, and the nip roller 63 is driven to retreat.

Next, the configuration, operation, and effects of the supply section 10 will be explained with reference to FIGS. 5 to 7. The IPlls stacked in the feed magazine 12 are stored with the phosphor layer (hereinafter also referred to as the surface) 11a facing downward, as shown in FIG. The take-out mechanism section 15, which takes out the IPlls one by one, is constructed as shown in FIG. 5(a). That is, the pair of suction parts 13A and 13B are attached to the four corners of the rectangular frame 100. The pair of suction parts 13A are arranged on the tip side of the IPll stored in the feed magazine 12 in the direction of taking out the IPll.
Suction pads 13a and i3 that suction both ends of l in the width direction
The vacuum pump 14 is connected to each of the suction pads 13a, 13a. Further, the pair of suction sections 13B are provided with suction pads 13b, 13b for suctioning both ends in the width direction of the IPll at the central portion along the take-out direction of the IP11, and the suction pads 13b, 13b are provided with the suction pads 13b, 13b, respectively. A vacuum pump 14 is connected. Further, a corrugation member 16 is attached to the frame 100 at an intermediate portion of the suction pads 13a, 13a constituting the pair of suction sections 13A. This corrugation member 16 includes the suction pads 13a, 13
A suction pad 16a is provided at a position that projects vertically downward from the suction surface a, and a vacuum pump 14 is connected to this suction pad 16a. Further, a coil spring 17 is inserted between the suction bat support 18 and the frame 100, and constantly urges the suction pad 16a downward. The suction and release of the vacuum pump 14 are controlled by the vacuum pump control section 203 which receives operation commands from the sequence control section 201.

The frame 100 has a frame support rod 101 fixed thereto. Bearings 102, 102 are attached to both ends of this frame support rod 101. Then, the frame support rod '1o is
Long hole-shaped guide groove 10'3, 103 for guiding the movement of 1
is bored in the frame (not shown). As shown in FIG. 2, this guide groove 10.3.103 is a pair of suction parts 13A.

13B and the corrugation member 16 are formed to guide the feed magazine 12 to the lowest layer of IPll loaded in the feed magazine 12. Further, a drive shaft 107 for moving the frame support rod 101 along the guide grooves 103, 103 is arranged parallel to the frame support rod 1'01. This drive shaft 107 has first link plates 104, 104 fixed to both ends thereof, while the frame support rod 101 has second link plates 104, 104 fixed to both ends thereof.
6.106 and this first link brake 1-10
4.104 and the second link plate 106°106 as the fulcrum 105. They are each rotatably connected via io5. The drive shaft 107 has a driven sprocket 108 fixed to one end thereof.
08, the reversible rotational force of the first motor M1 is transmitted via a drive sprocket 109 and a chain 110. The first motor M1 is driven by the first sensor 116 (not shown) disposed near the take-out mechanism section 15 to drive the pair of suction sections 13A.

13B is detected, the forward rotational drive is stopped based on the control of the suction unit drive control unit 202, and then, after a predetermined period of time has elapsed, the reverse rotational drive is started.

As shown in FIG. 5(b), the delivery member 19
It consists of a pair of IC rollers 111 and 111 mounted at positions corresponding to both ends of the IPll in the width direction, and a corrugation roller 112 mounted at a position corresponding to the center of the widthwise direction of the IPll. The pair of rollers 111, 111 are drive rollers 111a, 111 fixed to both ends of the drive shaft 113.
a, idle rollers 111b, 111b rotatably attached to the support shaft 114 and in contact with the drive rollers 111a, 111a, and a coil spring 115 attached between the drive shaft 113° and the support shaft 114.
It consists of. Further, the corrugation roller 1
12 is fixed to the center of the drive shaft 113, and its diameter is larger than the diameter of the drive roller 111a.

The operation and effects of the supply section 10 configured as described above will be explained with reference to FIGS. 6 and 7. First, IP
In order to take out ll, the first motor M1 is rotated forward,
Drive shaft 107. 1st. Second link plate 104,1
05, the frame support rod 101 is driven to move downward along the guide groove 103. When the frame 100 is moved downward in unison with the movement of the frame support rod 101, the suction pad 16a of the corrugation member 16 first moves to the non-fluorescent surface (also referred to as the back surface) of the IPll.
come into contact with. Note that since the corrugation member 16 is attached with the coil spring 17 interposed, the frame 100
can be moved further down. When the frame body 100 is moved further downward, all the suction pads 13a, 13a, 1
3b, 13b.

16a comes into contact with the non-fluorescent surface of IPll, and at this position the forward rotation of the first motor M1 is stopped.

This state is shown in FIG. 6(a). Furthermore, Fig. 6 (a')
is a view seen from the direction of taking out P11, where the suction pads 13a, 13a, and 16a are at the same surface height.
is in contact with l. Here, the vacuum pump 14 is driven to adsorb IPll. In addition, the suction bat 13a etc. are IPl
Since the non-fluorescent surface of the phosphor layer 1 will be adsorbed, the phosphor layer 1
No adsorption marks are left on 1a. After this, the first motor M1 is driven to rotate in reverse to start the separation operation of IPll. The first motor M1 is driven to rotate in reverse to rotate the frame 10.
When 0 is raised, the suction pad 13a initially.

Only the suction pads 13a, 13b, and 13b rise, and the suction pad 16a of the corrugation member 16 is urged downward by the urging force of the coil spring 17 and does not rise. As a result, when viewed in the width direction of IPll, Figure 6 (b
), only both ends of IPll in the middle direction are connected to other I
It is separated from the Pll, and the central part is attached to the corrugation member.
6, so it is in a downwardly protruding state. That is, I
The PLL is formed in a wavy state in the width direction, and this undulation is in the longitudinal direction of the IPLL (in the direction along the take-out direction).
Occurs throughout the area. In particular, this effect is remarkable because the suction pads 13b, 13b are suctioning both ends of the IPll in the width direction even in the central portion of the IPll in the longitudinal direction. In this manner, by forming the IPll in a wavy shape in the width direction, the section modulus of the IPll becomes large, and sag does not occur when the IPll is separated and moved.

Therefore, even if the frame body 100 is further lifted upward, the adsorbed IPll is lifted in parallel to the non-adsorbed portion as shown in FIG.
It can be separated without contacting ll. As a result, the phosphor layer 11a is not damaged due to contact between the IPs 11 when taking out the IPs. In addition, as shown in FIG. 6(b), when the IPll separation operation starts, the IPll
By forming a wavy shape in l, other excellent effects can also be achieved. That is, at the start of the separation operation,
First, both ends of the IPll in the width direction are separated from other IPlls, and an air layer is formed between them. In this way, by forming an air layer between other IPlls, it is possible to completely cut off contact with other IPlls, and it is possible to remove two pieces of IPlls by pseudo-adsorption due to static electricity, etc. It can be completely prevented.

In this way, the 1
The pieces of IPII are supplied to the delivery member 19 by moving the frame 100 along the guide groove 103. The tip of the IPll in the take-out direction is the drive roller 1'
11a, 111a and idle rollers 111b, 111'
When reaching the nip with b, the coil spring 115
Drive roller 111a and idle low
- The IPll held between the drive roller 111b and the drive roller 111a is sent forward by the conveyance force of the drive roller 111a (see FIG. 7). At this time, the IP11 is transferred to the delivery member 19.
When transferring to a pair of suction parts 13A, 13B, corrugation member 16. Alternatively, slippage may occur between the delivery member 19 and the IPll. However, when the non-fluorescent surface of IPll is adsorbed and the drive rollers l1la and 1
11a and the non-fluorescent surface side of IPll are brought into contact with each other, so that the fluorescent layer 11a will not be scratched.

Further, since a corrugation roller 112 is disposed on the delivery member 19 at a position corresponding to the widthwise center of the IPll, the IPll, which has been corrugated by the corrugation member 16, is corrugated again by the corrugation roller 112. A shape will be formed (see Figure 7).

For this reason, the leading end side of the IPll in the take-out direction after passing through the sending member 19 is sent out without sagging, and the secondary erasing in the subsequent stage and the delivery to the special equipment section 30 can be performed smoothly.

The secondary erasing section 20 is for erasing noise that may have accumulated in the phosphor layer 11a of the IPll by irradiating the IPll with light using the light emitting lamp 22 as described above. That is, the IPll, which was once subjected to erasure outside before being supplied to the radiological diagnostic apparatus 1, is completely erased by performing the erasing process again during transportation. The light emitting lamp 22 in the secondary erasing section 20 is powered by an AC power source.

Incidentally, in order to maintain the brightness and color temperature of the light-emitting lamp 22 constant and to achieve complete secondary erasure, the lamp load power must be kept constant. In this embodiment, in order to keep the effective value I of the lamp current (AC) i (t) constant, feedback is performed to keep the lamp load power constant.

Next, the configuration and operation of the special equipment section 30 will be explained.

The special equipment section 30 includes an outer belt 31 and an inner belt 32 that are joined to each other so as to sandwich and convey the IPll, and the outer belt 31 . It is composed of drive drums 33a, 33b and 34a, 34b that rotate intermittently in one direction (in the direction of the arrow shown) in synchronization with the inner belt 32. The outer belt 31 and the inner belt 32 are stretched so that the lower ends on the side of the secondary eraser 20 are bent in an arc shape toward the secondary eraser 23 side along the arc-shaped guide piece 37. There is.

The length of the part where the outer belt 31 and the inner belt 32 that form the special part 30 are joined to each other is approximately the same as the length of the IP. In addition, the outer belt 31 and the inner belt 32
A standby sensor 36 is arranged at the upper end of the standby sensor 36 to detect the tip of the IPll being transported. Based on the signal emitted from the standby sensor 36, the drive of the drive drums 33a, 33b and 34a, 34b is stopped.

Further, upon receiving a signal indicating that the previous IP in the holder part 50 has returned to its original position from the imaging site and has been transferred to the storage section 60, the drive drums 33a, 33b, and 34a
, 34b are started again. In addition, 35 is an outer belt 31 and an inner belt 32 which are stretched.
It is a driven drum that applies a certain amount of tension to the

Since the special equipment section 30 has the above-described configuration, the RPII from which noise has been eliminated is conveyed while being held by the outer belt 31 and the inner belt 32 while changing direction at the arc-shaped bent portion, and the tip thereof is connected to the standby sensor 36. When you reach the
The driving of both the outer and inner belts 31 and 32 is stopped by a signal from the standby sensor 36, and the IP 11 is moved to the special equipment section 30.
Wait for a while. Both the outer and inner belts 31, 32, which have stopped driving, are
When the photographing of P is completed and the conveyance to the storage section 60 is started, the drive is started again, and the image is conveyed to the holder part 50 through the light-shielding roller 42. At this time, the new IP from which the noise on the IP has been erased by the secondary erasing section 20 is transferred to the special equipment section 30.
He enters and waits there like last time. In this way, the noise-eliminated IPll is always on standby in front of the holder part 50, which is the imaging position, so that continuous X-ray imaging can be performed quickly and smoothly, and the imaging cycle time can be reduced. Shortening is possible. This is because in the conventional transport route, the pre-photographing MCT'R film used part of the same transport route, so it was not possible to provide a special section as described above. IP
Since each of them passes through a separate conveyance path, it is possible to provide a special equipment section 30 such as the one described above on the conveyance path between the secondary erasing section 20 and the holder part 50.

Next, the structure and operation of the light shielding part 4o will be explained with reference to FIG. 8.

The light shielding section 40 includes a guide plate 41 that guides the transport direction of the IPll, a light shielding roller 42 that is disposed in close contact with the guide plate 41, and a light shielding plate that abuts the guide plate 41 and the light shielding roller 42, respectively. It consists of 43a and 43b. As shown in FIGS. 8(a) and 8(b), the light-shielding roller 42 has a flexible member 42b made of foamed plastic (for example, urethane foam) that has a large amount of deformation and is surrounded by a roller 42a.
and is rotatably supported by a shaft 45 via a bearing 44. Light shielding roller 42
The flexible member 42b that covers the surface of the roller 42a is in close contact with the side plates 46 on both sides that support the shaft 45.
Since the rotation of the light shielding roller 42 may cause wear, a wear-resistant sheet member 47 with a low coefficient of friction is attached to the portion in contact with the light-shielding roller 42. Further, the light shielding plate 438.4
31] is arranged so as to block light from areas other than the transport path of the IPll. Note that a flaw detection device 48 is arranged near the light shielding roller 42 to detect flaws on the surface of the IPII that has passed through the light shielding roller 42.

Since the light-shielding unit 40 has the above-described configuration, the IPll that has been transported after secondary erasing enters the light-shielding roller 42 while being guided by the guide plate 41 with the surface of the transported IPll facing the light-shielding roller 42 side. 42 is a holder part 50 which rotates according to the transport speed of the IP and is the next transport path.
Transfer to.

At this time, since the surface of the light-shielding roller 42 against which the surface of the IP hits is formed of the flexible member 42b, the surface of the light-shielding roller 42 is not damaged when the IPll passes through the light-shielding roller 42. Furthermore, since the flexible member 42b is made of a material with a large amount of deformation, the flexible member 42b is deformed by the thickness of IPll when passing through, and the light shielding roller 42 rotates while being pressed against the guide plate 41. , even while the IPll is being transported, the light from the secondary erasing section 20 can be completely blocked, and the photographed IP will not be affected.

Next, regarding the structure and operation of the holder part 50,
This will be explained with reference to FIGS. 9 and 10.

The holder part 50 includes an upper belt 51 and a lower belt 52 that are joined to each other so as to sandwich and convey the IPll, and a third belt.
The upper belt 51 and the lower belt 52 are driven by the motor M3 of
drive rollers 53'a, 53b, 54a, 54b that rotate synchronously in one direction (in the direction of the arrow in the figure); and an arc-shaped guide member that bends both ends of the upper belt 51 and the lower belt 52 downward in an arc shape. 55, a tension roller 56a installed near the guide member 55 and abutting the upper belt 51 or the lower belt 52, respectively;
56b, 57a, and 57b. still,
Reference numeral 58 denotes a position sensor that detects the leading or trailing end of the IP that is held and conveyed by the upper belt 51 and the lower belt 52.

The upper belt 51 is made of an X-ray transparent material such as urethane, and as shown in FIG. 10, the length in the width direction perpendicular to the conveyance direction is approximately the same as the width of the IP. In other words, the upper belt 51 on the surface side of the IP that holds the IP is wide so as to cover the entire surface of the IP.

On the other hand, the lower belt 52 is composed of four narrow belts, and these four narrow belts are driven at the same speed by drive rollers 54a and 54b.

Also, by arc-shaped guide members 55.55 arranged at both ends of the upper belt 51 and lower belt 52, bent portions 59. 59 is formed. The length between both bent portions 59 and 59 is I
The length is almost the same as that of IP, and the front and rear ends of the IP can be held between the two bent portions 59 and 59.

Tension rollers 56a, 56b and 57a.

57b is a rotatable driven pulley whose shaft is fitted into the receiving shaft portion 190, and near each receiving shaft portion 190, as shown in FIG. 9, an upper belt 51 and a lower belt 52 are provided.
A plurality of bearing parts 190A are arranged in parallel, and the position of the shaft can be varied in the direction of increasing or decreasing the tension of the belt. Each tension roller whose shaft is fitted into the bearing part 190 is connected to the other bearing part 190A by an operation lever (not shown).
The tension of each belt in the upper belt 51 or the lower belt 52 can be adjusted by fitting the belt into the belt. still,
The tension of the belt may be adjusted by detecting the optimum tension in advance and controlling the tension so that the tension is automatically varied to that tension.

The drive rollers 53a, 53b, 54a, 54b
is rotated based on the drive of the third motor M3. This third motor M3 is drive-controlled by the second conveyor belt drive control section 206.

Further, as shown in FIG. 3, this holder part 50 has the openings;
6a, 56b, 57a, and 57b are held by the frame 180 that rotatably supports them. This frame 180
Sliding members 181 and 181 are fixed to both end sides of. The sliding member 181.181 is connected to the guide shaft 182.
'182, and is slidable along the guide shafts 182 and 182 by the fifth motor M5. Note that this fifth motor M5 is driven based on the drive control of the sliding drive control section 208.

The holder part 50 configured as described above drives the third motor M3 based on the control of the second conveyance belt drive control section 206 when the IPll is conveyed at high speed from the special equipment section 30. Drive rollers 53a, 53b, 54
a, 5'4b are rotated, and the IPll is conveyed while being held between the upper belt 51 and the lower belt 52. On this occasion,
The transported IPll changes its transport direction at the bending portion 59 and is transported with the surface of the IPll facing upward.

Here, when the leading and trailing ends of the transported IPll reach the bent portions 59 and 59 at both ends, as will be described later, the I
PII stops, but at this time, since tension is applied at both bent portions 59.59, IPll conveyed by both upper and lower belts 51.52 stops accurately at a predetermined stop position, Its position will not shift.

Therefore, the IPll stopped at this predetermined stop position can be moved to a predetermined photographing position, which will be described later, without any positional deviation. Further, the tension of each of the upper belt 51 and the lower belt 52 that hold the IPll is determined by the tension roller 56a.

The shafts of 56b, 57a, and 57b are connected to appropriate shaft receiving portions 19.
It can be changed by fitting into 0 or 190A, so
Can be adjusted to obtain optimal tension. Therefore, the IF' can be appropriately held and conveyed without damaging its surface. Furthermore, the upper belt 51 covers the entire surface of the IP and moves to the shooting position, which will be described later.
Since the entire surface of the IP is uniformly exposed to X-rays, the entire surface of the IP can be used as an effective area for imaging.

Therefore, there is no invalid area for imaging on the surface of the IP, and it is possible to eliminate unnecessary areas of the IP.

The IPll held between the upper belt 51 and the lower belt 52 is temporarily stopped at the center of the holder part 50 and then moved to the photographing position B. Here, IP
ll is detected by the position sensor 58 disposed at the bent portion 59 on the front side of the conveyance stage among the bent portions 59.59, and the conveyance front end or rear end of the IPll is detected, and the upper belt 51. Rotation information of the third motor M3, which is the drive source for the lower belt 52, is input from the low-return encoder 117. Since the distance between the position sensor 58 and the stop position is known, it is necessary to drive the third motor M3 in order to reach the stop position after the transport tip of rPll passes through the position sensor 58. The number of pulses can be detected. Furthermore, the position sensor 5
8 may detect the rear end of IPll. Second
The conveyor belt drive control unit 206 of
A third motor M3 is used to accurately stop the Pll at the stop position.
is under control. After the JPll is stopped at the central part of the holder part 5o, the exposed lead (not shown) is pressed down, so that the fifth motor M5 is driven under the control of the sliding drive control section 208, and the holder part 50 from the initial position A shown in Figure 3 to the imaging position @B, and
Line photography will be performed. In addition, shooting position B is IP
When X-ray imaging is performed for the entire part 11, and when radiography is performed in sections, the sliding member 181, 181 and the upper part.

The lower belts 51 and 52 may be driven to position the center of the dividing plane directly below the X-ray tube 2.

Note that the limit switch 184 detects that the holder portion 50 has reached the photographing position B.

Here, the sequence control unit 201 has a timer function that starts timing when the secondary erasure of the IP is completed and resets the timing when the lead exposure button is pressed. Therefore, if the exposed lead is not pressed down even after a predetermined period of time (3 to 4 hours) has elapsed after the start of time measurement, the sliding member 181 is not moved to the photographing position B, and control is performed so as to proceed to the next sequence. As a result, X-ray imaging will not be performed on IPll, which is kept waiting at the initial position A for a long time and has a large noise in the phosphor layer proportional to this time. Therefore, clear images with less noise can be recorded. The IPll for which xi imaging has been completed or the IP11 for which a predetermined period of fR has elapsed without X-ray imaging is transmitted to the second conveyor belt drive control unit 206.
Accordingly, the third motor M3 is started to be driven and the IPll is carried out to the storage section 60. The second conveyor belt drive control unit 206 continuously drives the third motor M3 when the flaw detection device 48 provided on the front side of conveyance of the holder part 50 detects that there is a flaw in the IPll. The I
The Pll is carried out to the storage section 60 without being stopped at the stop position. As a result, no image is recorded on the scratched IPll, and it becomes possible to always record images that are useful for diagnosis.

Next, the configuration, operation, and effects of the housing section 60 will be explained with reference to FIGS. 11 to 20.

First, the structure, function, and effects of the pickup magazine 65 will be explained. Figure 11(a).

(b) and (C) are plan views of the pickup magazine 65;
12(a) to 1.
FIG. 2(0) is a schematic explanatory diagram illustrating the shutter member 130 and the light shielding member 140. In the figure, the pick-up magazine 65 includes a box-shaped frame 120 that is removably disposed on the main body of the apparatus, and a shutter member 130 that is slid relative to the frame 120 to open and close an opening 120f, which will be described later. , and a light shielding member 140 that shields the moving path of the shutter member 130 from light. The frame body 1
20 is a front plate 120a, a back plate M20
b, a top plate 120C, a bottom plate 120d, and side plates 120e, 120e. The front plate 120a of the frame 120 is provided with a shutter opening (not shown) through which the shutter member 130 can be inserted and removed. A first lock pin 125 is provided at the lower end of the front plate 120a, and when the pick-up magazine 65 is attached to the device body, the first lock pin 125 is locked to the device body side. (See Figure 11(C)).

Further, a part of the upper plate 120c of this frame 120 is cut out, and an opening 120f for taking in IPll is formed.
is formed. The size of this opening 120f is I
The inner wall of the top plate 120 is provided with a concave notch 121. , consists of first and second notches 121A and 121B provided at two locations along the sliding direction of the shirt shirt member 130 (see FIG. 12(e)). When the shutter member 130 is opened, the portion 12Of
The bottom plate 120d of the frame 120 facing the opening 12Of has a flexible member with a large amount of deformation that comes into contact with the end surface of the IPll and restricts the movement of the IPll. More guide 1
22 are erected (Fig. 11 (a), (b), (c)
)reference). Furthermore, the side plate 12 of the frame 120
The upper surface plate 120 is provided on the inner wall surface of 0e and 120e.
A guide groove 123 for sliding the shutter member 130 is provided. The guide groove 123 is formed of a protruding piece 124 which is formed to protrude downwardly from the upper plate 120G. The shutter member 130 has one end of a flat plate bent at right angles, a handle 131 is provided on the outer surface of the bent portion, and a second lock bin 132 is provided on the inner surface of the bent portion, and the shutter member 130 is attached to the frame 120. When installed, the second lock bin 132 is locked to the frame 120 side. A light shielding plate 133 is attached to the lower surface of this shutter member 130. This light shielding plate 133 is a shutter member 130.
It has a mouth shape with narrow parts 133B and 133B affixed to both ends in the width direction intersecting the sliding direction, and a wide part 133A affixed over the entire area in the width direction. (See FIGS. 12(a), (0), and (d)).The light shielding member 140 is such that the shutter member 130 is
When the shutter member 130 is attached to the shutter member 20, it contacts the light shielding plate 133 attached to the lower surface of the shutter member 130, and when the shutter member 130 is removed, it engages with the notch 121 of the frame body 120 to close the shutter. The movement path of one member 130 is shielded from light. This light shielding member 140 is similar to the first light shielding member 140.
It consists of first and second light shielding members 140A and 140B provided opposite to the second notches 121A and 121B, respectively. This first. Second light shielding members 140A, 14
0B, as shown in FIG. Freely supported light shielding plate 14
2,143 and this light shielding plate 142°143 in Figure 12 (
e) Spring 144A, 1 that biases in the direction of the arrow shown in the figure.
It consists of 44B.

The light-shielding plate 142 has a curled portion 142A through which the fulcrum shaft 141A is inserted, and the tip on the free end side is bent to form a bent portion 142B. Notches are provided to escape the narrow portions 133B, 133B. Further, the light shielding plate 143
similarly has a curled portion 143A and a bent portion 143B,
Both ends of this bent portion 143B are not cut and are longer than the width of the shutter member 130. Further, one ends of the springs 144A and 144B are respectively locked to the lower surfaces of the light shielding plates 142 and 143, and the other ends are connected to a locking plate 14 that is erected on the bottom plate 120d of the frame 120.
5A and 145B, respectively.

FIGS. 13(a) and 13(b) show the operation of the pick-up magazine 65 configured as described above.

(C) and (d) will be explained with reference to them. Before operating this X-ray diagnostic apparatus, first, an empty pickup magazine 65 is attached to the main body of the apparatus. Then, the shutter member 130 is further removed from the frame 120 and the photographed I
Leave the PLL in a state where it can be taken in. In this state, the light shielding plates 142 and 143 are connected to the springs 144A and 1.
44B, the light shielding plate 142.
The bent portions 142B and 143B of the first frame 143 are provided on the top plate 1200 of the frame 120. It will be locked in the second notches 121A and 121B (see FIG. 13(a)).

Since the width of the bent portion 143A of the light shielding plate 143 is longer than the width of the moving path of the shutter member 130, even if the shutter member 130 is detached, the light shielding plate 143 protects the shutter member 130. It is possible to prevent light leakage from the movement path of the object. Furthermore, since the bent portion 143/l comes into contact with the second notch 121B which is one step lower than the top plate 120G, light leakage can be reliably prevented from this contact point. Further, the front plate 120a and the second light shielding member 1
Since the first light shielding member 140A is provided between the first light shielding member 140A and the first light shielding member 140B, it is possible to perform double light shielding over the width of the light shielding plate 142 of the first light shielding member 140A. It is possible to completely block light leakage to the IPll.

Next, when the imaging operation of the X-ray diagnostic apparatus is started, the imaged IPlls are sequentially supplied one by one by the action of a pushing device, which will be described later, and the pickup magazine 65 is accommodated through the opening 12Of of the frame 126. It will be loaded into the loading area. At this time, the bottom plate 120d of the frame 120
Since a guide 122 that contacts the end surface of the IPll is provided upright, the IPll is loaded in an aligned state within the pick-up magazine 65. In addition, since the loading position of the IPlls is regulated by the guide 122 in this way, when the pick-up magazine 65 is taken out from the device body and transported, the loaded IPlls can be prevented from moving and transported. Sometimes the phosphor layer 11a of IPll
It won't hurt.

Next, the IPl loaded in the pickup magazine 65 is
The operation when the pickup magazine 65 is taken out from the main body of the apparatus when the magazine 65 is full will be explained. Before taking out the pickup magazine 65 from the main body of the device, the frame 1
20 opening 12Or is closed, and this opening 120f is closed.
light leakage must be prevented. Therefore, the shutter member 130 is inserted through a shutter opening (not shown) provided in the front plate 120a of the frame 120, and is slid along the guide groove 123, so that the shutter member 130 opens the opening 12Of. will be closed. At this time, the moving tip of the shutter member 130 first moves toward the first light shielding member 140, as shown in FIG. 13(b).
A, the light shielding plate 142 is rotated against the biasing force of the spring 144A, and is removed from the first notch 121A.

The light shielding plate 142 is a light shielding plate 133 attached to the lower surface of the shutter member 130, as shown in FIG. 12(f).
Since both ends are cut away from the narrow portion 133B of the shutter member 1, the bent portion 142B of the light shielding plate 142
It comes into direct contact with the lower surface of 30. Therefore, light can be blocked over the range of contact between the bent portion 142B and the shutter member 130. Furthermore, a second light shielding member 140
Since B is still engaged with the second notch 121B, light can be blocked over the entire width of the shutter member 130. Therefore, the center portion in the width direction of the shutter member 130 is located at the first. Second light shielding members 140A, 140B
The light can be doubly blocked by the second light blocking member 140B on both ends thereof. Next, the 13th
As shown in FIG.
The light shielding plate 143 is rotated against the biasing force of the light shielding plate 4B and is removed from the second notch 121B. And this light shielding plate 1
43 comes into contact with the narrow portion 133B of the light shielding plate 133 attached to the lower surface of the shutter member 13Q.

Therefore, the central portion of the shutter member 130 in the width direction is
Light blocking can be ensured by the first light blocking member 140A, and both ends thereof can be blocked by the second light blocking member 140B. When the shutter member 1.30 is further slid, as shown in FIG.
It comes into contact with the wide portion 133A of 33. In this case, the central portion of the shutter member 130 in the width direction is the first. The second light shielding members 140A and 140B provide double light shielding, and the second light shielding members 140B ensure light shielding on both ends thereof. In this way, the shutter member 13
Complete light shielding can be achieved even during and after the slide movement. The shutter member 130 is the frame body 120
When the shutter member 130 is fully inserted into the frame 120, the second locking pin 132 acts to lock the shutter member 130 to the frame 120. Thereafter, the first lock pin 125 is unlocked, the pick-up magazine 65 is taken out from the main body of the apparatus, and the pick-up magazine 65 is transported for use in readout irradiation for photosensing. At this time, since the movement of the IPll loaded in the frame 120 is restricted by the guide 122, the phosphor 11
11a will not be damaged. In addition, shutter member 1
A light shielding plate 133 is attached to the lower surface of the shutter member 130, and the narrow portion 133B prevents the IPll from protruding beyond the upper end of the guide 122, so that the IPll enters the guide groove 123 and prevents the shutter member 130 from opening/closing. It does not cause any trouble.

Next, the structure and operation of the pushing device for pushing the photographed IP into the tick-up magazine will be explained with reference to FIGS. 14 to 20.

As shown in FIG. 14, the pushing device includes a presser plate 66 supported above the opening 120f of the pick-up magazine 65, and a feed mechanism unit that feeds the photographed IP along the lower surface of the presser plate 66. 63 and the upper surface of the holding plate 66 to pick up the photographed IP into the magazine 65.
It is composed of a pressing mechanism section 67 that is pushed inward.

The presser plate 66 is a plate-shaped body having approximately the same size as the IP, and one end of the presser plate 66 is secured by a support spring 68 on the side closer to the feed mechanism section 63 (hereinafter referred to as the front side), and one end that is far from the feed mechanism section 63 is secured by a support spring 68. The other end of the side (hereinafter referred to as the rear side) is supported by a composite support member 69, and is inclined downward as a whole from the front side to the rear side. The composite support member 69 includes a support plate 151 rotatably connected to the presser plate 66 at a fulcrum 150A, a guide frame 152 that holds the support plate 151 slidably in the vertical direction, and a guide frame 152 connected to the fulcrum 150B. A fixed frame 153 rotatably supported by
It consists of. The support plate 151 has a guide shaft 151a.
and a guide roller 151b are arranged vertically in parallel, and the guide shaft 151a and guide roller 151b fit into a guide groove 152a bored in the guide frame 1'52 and are supported along the guide groove 152a. The plate 151 is movable in the vertical direction. A torsion spring 154 is attached to the fulcrum 150B.
The first spring 154a is in contact with the upper part of the guide shaft 151a, and the end of the spring 154a is latched to the upper part of a stopper 152b protruding from the side surface of the guide frame 152. The second spring 154b is in contact with the lower part of the guide shaft 151a, and the end of the spring 154b is locked to the lower part of the stopper 152b. Due to this stopper 152b, when the guide shaft 151a is above a predetermined position, only the first spring 154a works to push the guide shaft 151a downward, and when the guide shaft 151a is below the predetermined position, the second spring 154a acts to push the guide shaft 151a downward. Only the spring 154b works and the guide shaft 151a
It is designed to push upward. The upper end of the guide frame 152 is connected to the fixed frame 153 by a spring 155, and the spring 155 applies a force to the guide frame 152 in the direction of pushing it forward with a bin 152C protruding from the lower front side of the guide frame 152. ing.

The pressing mechanism section 67 includes a drive shaft 156, a presser link 157 whose base end is attached to the drive shaft 156, and a seesaw portion 158 rotatably supported at the tip of the presser link 157 at a fulcrum 150G. , a first presser portion 159A and a second presser portion 159B protruding from both sides of the lower surface of the seesaw portion 158. The first holding portion 159A is located on the front side and is pressed against the upper surface of the holding plate 66 by a torsion spring 160A attached to the fulcrum 150C. On the other hand, the second presser portion 159B is located on the rear side and floats above the presser plate 66, which is inclined by the torsion spring 160A. As shown in FIG. 15, the drive shaft 156 has large and small sprockets 161A.

161B is integrally installed, and small sprocket 1
61B has a chain 162 and a drive sprocket 163.
The rotation of the fourth motor M4 is transmitted through the motor M4. Note that the fourth motor M4 is connected to the presser plate drive control section 2.
Rotation drive is controlled by 07.

As shown in FIG. 16, the feed mechanism section 63 includes feed rollers 16 attached to positions corresponding to both ends of the IP in the width direction.
4.164, nip rollers 166° 166 which are pressed against the feed rollers 164, 164 on both sides by pressing springs 165, 165, and feed rollers 164 on both sides.
．． 164 and a corrugation roller 167 having a larger diameter than both feed rollers 164. Both feed rollers 164, 164 and corrugation roller 167 are fixed to a drive shaft 168. The drive shaft 168 is supported by a frame 169 via a bearing 170, and rotation is transmitted via a sprocket 171 at the end. Nip roller 166.16
6 is attached to the support shaft 172 via a bearing 173, and the nip rollers 166, 166 are rotated by the rotation of the feed rollers 164, 164 pressed by pressing springs 165, 165 attached to both ends of the support shaft 172. It is rotatable. Further, as shown in FIG. 15, a groove 174a formed in a cam 174 is fitted into the support shaft 172, and a sprocket 175 is integrally provided on this cam 174. The fourth motor M4 is connected to the large sprocket 161A through the cam 174, so that the rotational drive of the fourth motor M4 is transmitted to the cam 174. Then, the rotation of the cam 174 overcomes the pressing force of the suppression spring 165 and moves the support shaft 172 in the opposite direction where the pressing force is applied, and the nip roller 16
6 in the direction of arrow P in FIG.

In FIG. 14, 70 is a barcode reader that reads a barcode (not shown) written on the photographed IP.
As shown in FIG. 7, one end is provided with a reading section 70a that reads the reading line in the barcode, and the other end is rotatably supported on a fixed frame 153A at a fulcrum 150D, and a torsion spring 160B is attached to the fulcrum 150D. The torsion spring 160B exerts a force that pushes the barcode reader 70 downward. An arm 173 having a presser roller 173a at its tip is provided on the front side of the barcode reader 70.
The presser roller 173a presses the upper surface of the presser plate 66 by the torsion spring 160B, and the barcode reader 7
0 and the presser plate 66 maintain a predetermined positional relationship.

Chapter 18 Regarding the operation of the pushing device configured as described above
The explanation will be given with reference to FIG. 20 as well.

When the pickup magazine 65 is not set in the device, the composite support member 69 is tilted rearward by the spring 155 as shown in FIG. 18(a'). Therefore, at this time, the presser plate 66 is placed above the position where the pick-up magazine 65 is set. Next, when the tick-up magazine 65 is inserted, the tick-up magazine 65 pushes the bin 152C of the guide frame 152, as shown in FIG.
As shown in FIG. 18(b), the force of the spring 155 is overcome and the composite support member 69 stands straight. At this time, as the guide frame 152 rotates, the presser plate 66 tends to lower due to the force of the first spring 154a, but a shutter 658 (the shutter member 130) for blocking light is set in the pickup magazine 65. Therefore, the guide shaft 151a is connected to the first spring 15.
4a is overcome and the guide shaft 151a is pushed up. Next, when the shutter 65a is pulled out from the take-up magazine 65, the first spring 15
The guide shaft 151a returns to the predetermined position by the force 4a, and the rear side of the presser plate 66 enters inside the pickup magazine 65, as shown in FIG. 18(C). As a result, the I
The tip of P can be reliably inserted into the back of the pick-up magazine 65 using the presser plate 66 as a guide.

In addition, when pulling out the pick-up magazine 65 from the device hX, by reversing the above process, the presser plate 6
It can be easily done without getting stuck in 6.

Passing through the drive belt 61 and drive roller 62, the feed roller 1
As shown in FIG. 19(a), the tip of the IPll sent out by 64 is guided toward the back of the pick-up magazine 65 along the holding plate 66. Because the first
This is because, as shown in FIG. 6, the rigidity of the IPll in the conveyance direction is increased by corrugating the TPll using the corrugation rollers 167. At this time, the feed roller 164 on the driving side is
1, and the surface of the IP is in contact with the nip roller 166, which is the driven side, so even if it slips when starting or stopping rotation, the IP surface will not rub.
It does not damage the IP surface on which photographed images are recorded. Note that if the corrugation roller 167 is not provided, the rigidity of the IP in the transport direction will not be strengthened, so the 20th
As shown in the figure, due to the weight of the IPll, the newly inserted IPll hangs down on the back surface of the IP already housed in the pick-up magazine 65, and its surface is rubbed.

Next, when the drive shaft 156 is rotated by the fourth motor M4, the presser link 157 is rotated as shown in FIG. 19(b).
rotates, and the first presser part 15 in the seesaw part 158
9A pushes the presser plate 66, overcomes the force of the support spring 68, and rotates the presser plate 66 about the fulcrum 150A. At this time, the cam 17 rotates in synchronization with the drive shaft 156.
4, the nip roller 166 moves in the direction of the arrow P shown in the figure and retreats (see FIG. 15), so that the presser plate 66
By pushing l, the surface of the IPll will not be damaged by the nip roller 166. Then,
As shown in FIG. 19(C), when the drive shaft 156 is rotated in the direction of the arrow Q shown in the figure, the rear end of the IP
is pressed into the tick-up magazine 65 by.

Until this state is reached, the torsion spring 160A is attached to the fulcrum 150C rather than the support spring 68.
is stronger, so the seesaw portion 158 does not rotate and the presser plate 66 is pressed by the first presser portion 159A.

Next, when the drive shaft 156 is further rotated in the direction of the arrow Q shown in the figure, the torsion spring 16 is rotated as shown in FIG. 19(d).
0A, the seesaw portion 158 rotates, and not only the first presser portion 159A but also the second presser portion 159B press the presser plate 6.
6, and the press plate 66 is pressed by both press parts 1.59A and 159B. Furthermore, drive shaft 1
56, as shown in FIG. 19(e), a composite support member 69 stronger than the torsion spring 160Δ is formed.
Overcoming the torsion spring 154b, the rear side of the presser plate 66 also comes down, and the presser plate 66 presses the entire backside of the IPll.

In this way, the holding plate 66 moves so as to gradually push the IP into the pick-up magazine 65 from the rear end to the front end, so that the photographed IP is reliably surrounded by the guide 122 in the pick-up magazine 65. It can be stored in the storage and loading area, and does not damage the surface of the IP.

The barcode reader 70 rotates around the fulcrum 150D as the presser plate 66 descends due to the force of a torsion spring 160B attached to the fulcrum 150D.
IP pushed into the tick-up magazine 65 by
The barcode written on the back of the ll is read to identify the correspondence between the photographed image data and the patient. At this time, since the arm 173 maintains a constant distance between the reading section 70a and the presser plate 66, the photographed IP is
Even if the barcodes are stacked one after the other in the barcode 5, the reading distance 71 between the reading unit 7Qa and the barcode written on the back of the IP located at the top is kept constant (see Fig. 17).
Since the reading unit 70a can be positioned at the barcode reader 70, the barcode can be reliably read.

Further, since the barcode reader 70 rotates and scans around the fulcrum 150D as the presser plate 66 moves, it is possible to change the barcode reading line within the readable range 71 and read the barcode multiple times. Even if there is small dust or dirt on one reading line and the barcode information is read incorrectly, the information can be read accurately using another reading line. In addition, in FIG. 17, 72 is a barcode label on which a barcode is written.

As described above, the pressing movement of the presser plate 66 and the nip roller 1
The three operations of the evacuation movement of the barcode reader 66 and the scanning movement of the barcode reader 70 can be reliably driven in synchronization using one fourth motor M4.
It is possible to reliably and smoothly load and store the IP in a pick-up magazine 65 having an accommodation/loading part of almost the same size as the photographed IP without damaging the surface, and also to read barcodes accurately.

After the photographed IPII is completely stored in the pick-up magazine 65 by the presser plate 66, the presser link attached to the drive shaft 156 is driven by the presser plate drive control unit 207 to reversely rotate the fourth motor M4. 157
rotates in the direction opposite to the direction of the arrow Q shown in the figure, and through the reverse process to the above process, the holding plate 66, nip roller 166, and barcode reader 70 each return to their original initial positions and read the next photographed IP. Tick up magazine 65
It will be prepared for storage inside.

Finally, the overall operation of the apparatus according to the embodiment of the present invention will be briefly explained.

The IPs 1 to 11 that are placed in the feed magazine 12 with the front side facing down are taken out by vacuum suction on the back side of the IPs by suction sections 13A and 13B in the takeout mechanism section 15, so that only one sheet is taken out. I taken out
The Pll is transported by the sending member 19 to the secondary erasing unit 20 with its surface facing down, and at this time, the light emitting lamp 22 emits light and the surface of the Pll is irradiated with light, thereby erasing the noise of the IP. . The noise-eliminated IPll is
Outer belt 31 and inner belt 3 that constitute special equipment section 3o
2, the IPll is held and conveyed while changing its direction upward at its arcuate bent portion, and the tip of the IPll is brought to the standby sensor 36.
When the IP reaches the location, the IP temporarily waits in the special equipment section 30. After a predetermined period of time has elapsed, the IP that has been waiting is conveyed to the holder portion 50 through the light-shielding roller 42 while being guided by the guide plate 41 .

The IPll transported to a part of the holder is transported to a bent portion 59 at one end where the upper belt 51 and the lower belt 52 are bent into an arc shape.
While changing the conveyance direction with the surface of the IP facing upward, it is conveyed while being held between both belts 51 and 52, and is stopped at a predetermined position by the position sensor 58. 1 and Pll stopped at the predetermined position are: By moving the entire holder portion 50 toward the back of the apparatus, it moves one step to the imaging position @B, which is a position opposite the X-ray tube 2, and an X-ray image transmitted through the subject is projected onto the IPll. Ru. After the photographing is completed, the entire holder portion 50 of the IPll returns to the original transport path by moving to the original initial position A.

Then, it is conveyed again by the upper belt 51 and the lower belt 52, and is sent to the storage section 6o while changing direction downward at the arc-shaped bent portion 59 at the other end.

Note that the IP for which a flaw is detected on the surface of the TPll by the flaw detector 48 is not subjected to the above-mentioned photographing operation, and is transported to the storage section 6o as it is.

The IP1'1 sent to the storage section 60 is transferred to the drive belt 6.
1 and the driving roller 62, the IP is transported to the feeding mechanism section 63 with its surface facing down. Feeding mechanism - mechanism part 6
The IP that has passed through 3 is carried to the rear side of the pick-up magazine 65 along the lower surface of the holding plate 66, and then the holding plate 66 is moved downward by the drive of the pressing mechanism section 67. Press the entire back surface of the IP and store it in the accommodation/loading section of the pickup magazine 65 with the front surface facing down.

In this manner, after a predetermined number of photographed IPlls are stacked and stored in the pickup magazine 65, the opening 120f of the pickup magazine 65 is closed with the shutter member 13o (shutter 65a) to block light. Tick-up magazine 6 shielded from light like this
5 from the device, insert it into another reading device,
The stored photographed IP is subjected to readout irradiation for photoexhaustion.

[Effects of the Invention] As explained above, the present invention provides arcuate bends at both ends in the conveying direction of the conveyor belt in the part of the holder that leads to the photographing position. It is possible to provide a radiological diagnostic apparatus that can prevent positional deviation of the IP and improve stop position accuracy, and also contribute to miniaturization of the apparatus.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an X-ray diagnostic device that is an embodiment of the present invention, FIG. 2 is a schematic diagram of the internal structure of the spot shot device, FIG. 3 is a plan view of a part of the holder, and FIG. 4 5 is a block diagram schematically showing the control system, M5 (a) is a schematic perspective view showing the take-out mechanism section of the supply section, FIG. Figure (a),
(b). (C), Fig. 7 is an explanatory diagram of the operation of the supply section, Fig. 8 (a) is an explanatory diagram showing the main parts of the light shielding part, Fig. 8 (b) is its sectional view, and Fig. 9 is a part of the holder. Explanatory diagram showing the outline of
Figure 0 is a perspective view showing a belt that holds and conveys a part of the holder, and Figures 11 (a), (b), and (c) are plan views of the storage magazine. a) and (b) are a plan view and a front view of the shutter member, and FIGS.
e) is an enlarged view of the light shielding member, Fig. 12 (f), (g')
are the first. Schematic perspective view of the second light shielding member, 13th
Figures (a) to 13(d) are explanatory diagrams of the light shielding operation when the shutter member is opened and closed, Figure 14 is an explanatory diagram showing the schematic structure of the housing section, and Figure 15 is an illustration of the relationship between the presser groove section and the feed mechanism section. FIG. 16 is an explanatory diagram showing the schematic configuration of the feeding mechanism section; FIG. 17 is a sectional view taken along the line A-A in FIG. 14 showing an outline of the reading operation of the barcode reader; Figures 18(a), (b), and (c) are explanatory diagrams showing the operation up to setting the pickup magazine in the device, and Figure 19(a)
, (b), (C), ((f). (e) is an explanatory diagram showing the operation process up to pushing the phosphor sheet into the tick amplifier magazine. It is a comparative diagram showing the storage state of the phosphor sheet in the up magazine. 11...IP (phosphor sheet), 50...
... Part of the holder, 51 ... Upper belt (transport belt), 52 ...
...Lower belt (conveyor belt), 59...
bending part. (b) 11 Fig. 6 (C) G It 1llb Fig. 8 (0) (b) Tog Fig. 13 (0) 12+ (b) 44A

Claims (1)

[Claims] In a radiological diagnostic apparatus in which a stimulable phosphor sheet is conveyed by being held between endless conveyor belts, the stimulable phosphor sheet is conveyed through a part of the holder, and the stimulable phosphor sheet is guided to an imaging position in a part of the holder and used for radiography, the phosphor sheet is held and conveyed by the part of the holder. A radiation diagnostic apparatus characterized in that a conveyor belt is provided with arc-shaped bent portions at both ends in the conveying direction, and the bent portions apply tension to the leading and trailing ends of the phosphor sheet.