JPS625864B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray imaging apparatus that performs X-ray imaging using a sheet film (a film other than a roll film).

As an X-ray imaging device using sheet film,
A plurality of unphotographed sheet films are prepared, and the sheet films are first taken out one by one, held in a close-contact holder for holding the film, and moved between the photographing position and the standby position, and then retracted to the standby position. Then, a fluoroscopic image of the affected area of the subject is observed using a fluoroscopic device such as an X-ray television, and when the fluoroscopic image is in the desired state, the contact holder is sent to the imaging position and at the same time the required dose of X-rays is delivered. There are X-ray cameras that perform X-ray photography by performing a series of operations such as exposing the X-ray to X-rays, taking an image, returning the contact holder to the standby position, and replacing the film that has been taken.
It is also known as a line television system.

In this type of X-ray imaging device, the unexposed film storage case (hereinafter referred to as "feed magazine") and the exposed film storage case (hereinafter referred to as "take-up magazine") are placed approximately perpendicular to the moving surface of the close contact holder. The film movement direction is deflected by approximately 90 degrees to reduce the size of the device, and both magazines are arranged at a 360 degree angle.
゜This is the first product that allows for easy loading and unloading of the film at any rotation angle and X-ray photography of the subject at any rotation angle.
Something like the one shown in the figure is being considered.

That is, in the figure, reference numeral 11 denotes a housing of the X-ray imaging apparatus, and the housing 11 has an L-shaped cross section as shown, and one end of the housing 11 is fixedly supported by a support frame SF that performs a rotational driving operation. In this X-ray imaging device, EP indicates the imaging position, WP indicates the standby position, and the standby position WP indicates the X-ray tube.
It is set at a position outside of the XT radiation field. 12
1 is a close-contact holder for holding a sheet film, and this close-contact holder 12 is made of a material with high X-ray transmittance, such as aluminum, and is opened and closed by a hinge provided on the photographing position EP side. This close contact holder 12 is located at the standby position WP during fluoroscopy, and is sent to the imaging position during imaging. The hinge portion is covered with a cover 12a made of heavy metal such as lead.
X-ray radiation from the X-ray tube XT, especially secondary X-rays passing near the boundary of the irradiation range, is
Exposure to X-rays, including X-rays, is now prevented. In addition, a heavy metal plate such as a lead plate is provided on the side wall of the X-ray arrival direction of the standby position WP of the housing 11 of the X-ray imaging unit to prevent X-rays from entering the close contact holder 12 in the standby position WP. Shielding plate 13
is attached. Reference numeral 14 denotes a pair of transport rollers (consisting of 14a and 14b) provided on the side of the standby position WP, which feeds the unphotographed sheet film into the close contact holder 12 and transports the photographed sheet film within the close contact holder 12. It is something to take out. Reference numeral 15 designates a box-shaped feed magazine for storing unphotographed sheet film SF ₁ , and numeral 16 represents a box-shaped take-up magazine for storing photographed sheet film SF ₂ . These magazines 15 and 16 are each provided with a film outlet 15a and a film storage opening 16a as shown in the figure. Further, the magazines 15 and 16 have the film outlet 15a and the film storage opening 16a.
The film outlet 15a and the film storage opening 16a face each other with their sides substantially facing each other.
is located on the transport roller 14 side, and the magazines 15 and 1 are located on the transport roller 14 side, and
The films SF ₁ and SF ₂ in 6 are installed in the housing 11 in a substantially vertical arrangement. The feed magazine 15 is provided with a press plate 15b inside thereof that constantly presses the film SF ₁ toward the film outlet 15a. A biasing force for the pressing is applied in the R direction in the figure by the elastic body 15c. Further, the take-up magazine 16 is provided on the side of the feed magazine 15, that is, so as to be movable forward and backward in the LR directions shown in the figure. 17a and a shaft 1 that is eccentrically protruded from substantially the main body 17a and engages with the take-up magazine 16.
This is done by rotating the knob 17 consisting of 7b in the direction of AB in the drawing. Reference numeral 18 denotes a pair of storage rollers (consisting of 18a and 18b) for feeding the film, and this storage roller 18 is arranged near the film storage opening 16a of the take-up magazine 16, and its shaft is supported by the housing 11. The take-up magazine 16 is moved relative to the take-up magazine 16 by moving forward and backward in the LR direction shown in the figure, and one roller 18a moves along the other roller 18b in the PS direction shown in the figure. It enters into the magazine 16 and leaves. 19 is Take-up Magazine 1 of the film SF ₂
This is a guide plate for guiding the storage roller 18 into the storage roller 18, and is located on the sending-out side of the storage roller 18 and fixed to the housing 11. 20 is feed magazine 1
Sheet film is removed from the film outlet 15a of No. 5.
This is a suction cup for taking out the sheet film SF ₁ one by one, and it reciprocates in the direction of CD in the figure and sucks and takes out the sheet film SF ₁ one by one. 21 is a sheet film taken out by the suction cup 20
A pair of feed rollers (consisting of 21a and 21b) are used to peel off the SF ₁ from the suction cup 20 and send it to the transport roller 14 side. In order to do this, one roller 21a is operable to move in the direction of arrow EF. 22 is a pair of direction switching rollers (22a,
22b), and this direction switching roller 2
2 transfers the unphotographed sheet film SF ₁ fed out from the feed roller 21 to the conveyance roller 14
In order to feed the photographed sheet film SF ₂ sent out from the transport roller 14 to the storage roller 18, one roller 22a is configured to be able to switch its position in the direction of GH shown in the figure. At the solid line position, feed magazine 15
The film SF ₁ is received from the take-up magazine 16 at the position indicated by the broken line in the figure.
You can send SF ₂ . Reference numeral 23 denotes a guide provided between the direction switching roller 22 and the conveying roller 14, and this guide 23 guides the sheet films SF ₁ and SF ₂ being fed. 2
4 is the X for fluoroscopy installed behind the imaging position EP
This is an image intensifier for line television systems. Reference numeral 25 designates a cover for the storage roller 18. This cover 25 is provided integrally with one of the rollers 18a, and also functions to support the photographed sheet film _SF2 .

The operation of the device with such a configuration will be described below.

First, an outline of the movement of the sheet film will be described.
The sheet film SF ₁ in the feed magazine 15 is pushed to the film outlet 15 by the pressing plate 15b which receives a biasing force in the R direction shown in the figure by the elastic body 15c.
It is always pressed against the a side with an appropriate pressure. For this reason, the housing 11, the bed top plate supporting the subject PA
The moving parts of the device, including the BT, X-ray tube XT, etc.
No matter what rotation angle the sheet film is rotated around PA in the V-W direction shown in the figure,
The SF ₁ is always aligned on the side of the film outlet 15 and maintains a stable state without falling out of the feed magazine 15 or causing disturbance within the magazine. Therefore, the sheet films _SF1 in the feed magazine 15 are suctioned and taken out one by one by the suction cup 20 which is driven in an arc in the direction CD in the figure, starting from the top surface. The sheet film SF ₁ taken out is held by the feed roller 21 and driven. At this time, one of the feed rollers 2
1a moves in the direction E→F in the figure, the sheet film SF ₁ is clamped, and in this state, the suction cup 20 further moves in the direction D in the figure, so that the sheet film SF ₁ is safely peeled off from the suction cup 20. Ru. Then, the sheet film SF ₁ is sent to the direction switching roller 22 by the feeding roller 21. At this time, the direction switching roller 22
is located at the solid line position shown in the figure, and sends out the fed sheet film SF ₁ via the guide 23 to the conveying roller 14 side. Direction switching roller 22 and conveyance roller 1
Although there is an angular difference of approximately 90 degrees between the feeding directions of the sheet film SF 1 , the sheet film SF ₁ is guided by the guide 23 and fed to the conveying roller 14 . Then, the sheet film SF ₁ is placed in the close contact holder 12 which is waiting in the open state at the standby position WP by the conveyance roller 14.
is sent. When the sheet film SF ₁ is fed into the close contact holder 12, the top cover is closed and the holder 12 enters a standby state. When an imaging command is given from the console (not shown) in this state, the contact holder 12 is immediately sent to the imaging position EP, and then the X-ray tube XT emits the required X-rays according to the imaging conditions. Photography will take place. When the photographing is completed, the contact holder 12 is returned to the standby position WP, the top cover is opened, and the sheet film SF ₂ inside is taken out by the conveying roller 14 and guided by the guide 23 to reach the direction switching roller 22. At this time, one of the rollers 22a of the direction switching roller 22 is moved to the position shown by the broken line, and the sheet film SF ₂ that has entered the direction switching roller 22 is sent to the storage roller 18 side. Then, the storage roller 18 further feeds the fed sheet film SF ₂ , but the tip of the sheet film SF ₂ comes into contact with a guide plate 19 provided near the exit of the storage roller 18 and is guided inward to the magazine to take up the take-up magazine. It is stored in 16. In this case, the knob 17 is adjusted according to the amount of sheet film SF ₂ stored in the take-up magazine 16.
can be adjusted so that the roller cover 25 presses the sheet film SF ₂ with an appropriate pressure. The operating state of the storage roller 18 is controlled in conjunction with the operation of the knob 17, and the storage roller 18 is
The SF ₂ is stably supported via the roller cover 25.

Thereafter, by repeating the above-described operations, it is possible to take pictures one after another.

In such a configuration, by constantly pressing the film in the feed magazine 15 with an appropriate pressure by the pressing plate 15b, the device can press the film in the bed top plate BT.
Alternatively, one film SF ₁ can be rotated at any rotation angle of 360° with the subject PA as the center of rotation.
is in a stable state, and can be stably removed using the suction cup 20. Further, the take-up magazine 16 can be adjusted forward and backward in the LR directions shown in the figure by rotating the knob 17, and since the position of the storage roller 18 is fixed, the storage roller 18
If the is stationary, take-up magazine 1
One of the rollers 18a is inserted into the magazine 6, so that the roller 18a can press the sheet film SF ₂ in the magazine, and the knob 17 and storage roller 18 can be adjusted according to the storage state of the sheet film SF ₂ . Roller 18 removes the sheet film in the magazine.
It is possible to adjust the pressure that presses SF ₂ , so the device
It is possible to stably store the sheet film SF ₂ in the take-up magazine 16 at any rotational position of 360°.

By the way, in the above configuration, when feeding the film, the film is conveyed from the feed magazine 15 through the feed roller 21 → direction switching roller 22 → conveyance roller 14 and sent to the close contact holder 12 at the standby position WP, and when the film is ejected, the film is conveyed from the feed magazine 15 to the close contact holder 12 at the standby position WP. The film is conveyed from 12 to conveying roller 14 → direction switching roller 22 → storage roller 18 and sent to take-up magazine 16. When feeding the film, one of the feed rollers 21 21a is moved from direction E to F in the figure. Then, the film taken out from the feed magazine 15 must be held between the feed rollers 21, and one side 22a of the direction switching roller 22 must be moved from H to G direction in the figure to change the direction. The direction must be switched by moving one side 22a of the direction switching roller 22 from direction G to H in the drawing.
In such a case, since the moving direction and stroke of the feed roller 21a and the moving direction and stroke of the direction switching roller 22a are different, they are generally driven separately by different drive sources. Therefore, not only is the structure complicated, but it is also difficult to run the film stably.

The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide an X-ray imaging apparatus that can stably run a film with a simple configuration using a single drive source.

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 2 to 4 show the configuration of an embodiment of the present invention. Figure 2 shows the film transport system, Figure 3 shows its drive system, and Figure 4 shows its switching operation system.
These are arranged in such a way that FIG. 2 is located in front of FIG. 3, and FIG. 4 is located in front of FIG. 2, respectively.

In FIG. 2, the same parts as in FIG. 1 are designated by the same reference numerals. Reference numeral 51 denotes a feed-out drive mechanism as a first drive mechanism corresponding to the feed-out roller 21 in FIG.
1 is two rollers 52, 53, two pulleys 54, 55 paired with these, and a pulley 54,
It is composed of a belt 56 stretched between 55 and 55. The rollers 52 and 53 each have a rotating shaft 57.
and 58, each of which is rotatably supported. The rotating shaft 58 is supported by supporting side plates SB fixed to the housing 11 near both ends thereof, and the rotating shaft 57 has both ends supported by one end of a supporting member 59. The other end of the support member 59 is rotatably supported by a rotating shaft 58 . Therefore, rollers 52 and 53 support member 5
9, and can rotate in the direction IJ in the drawings about a rotation shaft 58 to open and close the delivery drive mechanism 51. Further, the pulleys 54 and 55 are supported by rotating shafts 60 and 61, respectively, and these rotating shafts 60 and 61 are supported by supporting side plates SB in the vicinity of their respective ends so as to be freely rotatable. Further, 62 is a conveyance drive mechanism as a second drive mechanism corresponding to the conveyance roller 14 in FIG. , 64, and a belt 66 stretched between them. Pulleys 63 and 6
4 are supported by rotating shafts 67 and 68, respectively, and these rotating shafts 67 and 68 are supported by supporting side plates SB in the vicinity of their respective ends so as to be freely rotatable. In addition, the roller 65
is rotatably supported by a rotating shaft 69, and this rotating shaft 69 is also supported by supporting side plates at both ends.
Supported by SB. Reference numeral 70 denotes a storage drive mechanism as a third drive mechanism corresponding to the storage roller 18 in FIG.
It consists of 2. The roller 71 is supported by a rotating shaft 73, and the rotating shaft 73 is supported by support side plates SB in the vicinity of both ends of the roller 71 so as to be rotatable. Further, the roller 72 is connected to a rotating shaft 74.
The rotating shaft 74 is also supported by the support side plate SB at both ends. 75 is a direction switching drive mechanism as a fourth drive mechanism corresponding to the direction switching roller 22 in FIG.
5 is two rollers 76, 77, two pulleys 78, 79 paired with these, and pulley 7.
It consists of a belt 80 stretched between 8 and 79. The rollers 76 and 77 each have a rotating shaft 8
1 and 82, each of which is rotatably supported. Both ends of these rotating shafts 81 and 82 are supported by a support member 83. The pulley 78 is supported by a rotating shaft 84.
is supported by a support member 83 and is rotatable. Furthermore, the pulley 79 is supported by a rotating shaft 85, and this rotating shaft 85 is supported by the supporting side plate SB so as to be freely rotatable. The support member 83 is rotatably supported by a rotating shaft 85. Therefore, rollers 76, 77, pulley 7
8 and 79 are integrally connected by a support member 83, and are configured to rotate in the M--N direction in the drawings about a rotating shaft 85, thereby allowing the direction switching drive mechanism 75 to perform a direction switching operation.

Although not specifically mentioned above, the pulleys and rollers in each of the drive mechanisms described above are each provided in pairs on the rotating shaft that supports them, spaced apart according to the width dimension of the sheet film. The structure is such that the parts are held and driven by rollers and belts.

In FIG. 3 showing the drive system for driving the above structure, 86, 87 and 88 are for transmitting rotational driving force to the rotating shafts 61, 73 and 85, respectively, to drive the drive mechanisms 51, 70 and 75. sprockets, and these sprockets 8
6, 87, 88 are rotating shafts 61, 73, 8, respectively.
It is fixed to 5. 89 is the drive mechanism 51, 7
This is the drive shaft of motor _M1 for 0.75 drive, and a sprocket 90 is fixed to this drive shaft 89. Further, 91 is a sprocket rotatably provided for tension adjustment, etc., and this sprocket 91 is supported by a rotating shaft 92. These sprockets 86, 87, 88, 9
A chain CH is installed between 0 and 91,
It is designed to transmit the rotational force of motor _M1 . On the other hand, 93 is a gear for transmitting driving force to the rotating shaft 67, and is fixed to the rotating shaft 67. 94 is a drive shaft of a motor _M2 for driving the drive mechanism 62, and a gear 95 is fixed to this drive shaft 94 and meshes with a gear 93 as shown.

Each of the sprockets 86, 87, and 88 is set so that the number of teeth satisfies the relationship 87<85<86. Also, the motor _M1 moves in the direction O→P as shown in the figure when feeding the film, and in the direction P→ as shown in the figure when discharging the film.
The motor M2 rotates at the same speed in the O direction, and the motor _M2 rotates in the S→T direction shown in the figure at the first set speed when feeding the film.
When the film is ejected, it is set to rotate in the direction T→S in the drawing at a second set speed. thus,
Finally, the transport speeds V 1 , V 3 and V 4 of _{the film by the first, third and fourth drive elements, that is, drive mechanisms 51, 70 and 75, respectively, become V 1 <V 4 < V 3 , and} the 2 drive element or drive mechanism 6
The film conveyance speeds V _2F and V _2T during film supply and film discharge in step 2 are set so that V _2T <V ₄ <V _2F with respect to V ₄ .

Next, in FIG. 4 showing the switching operation system, 96
is a rotary solenoid as a driving source for switching operation, and the operating shaft 9 of this rotary solenoid 96 is
A lever 98 is fixed to the lever 7. lever 98
is due to the operation of the rotary solenoid 96.
Rotates between q. 99 is a lever as a first actuating member whose central part is fixed to the rotating shaft 58;
This lever 99 is configured to rotate integrally with the support member 59 about the rotating shaft 58. One end of the lever 99 is connected to the lever 9 via a connecting member 100.
The lever 99 is connected to the rotary solenoid 96, and the lever 99 is rotated between the positions ij shown in the figure by the operation of the rotary solenoid 96. The other end of the lever 99 is connected to a spring 10 for returning the rotary solenoid 96.
1 always applies a biasing force in the illustrated j-i direction. One end of a transmission member 102 is pivotally supported near the one end of the lever 99.
The other end of 2 is pivotally supported by a rotating shaft 84 protruding from a support member 83 that functions as a second operating member. That is, the transmission member 102 transmits the rotational force of the lever 99 to the support member 83, and rotates the support member 83 about the rotating shaft 85 between m and n in the drawing. Further, the transmission member 102 has a protrusion 10
2a is formed, and two position detectors for detecting motion, such as photo sensors 103 and 104, installed at both ends of a predetermined operating range of this portion, are operated. Here, lever 9
The dimensions from the rotation axis 58 of No. 9 to the pivot point of the connecting member 100 and the dimension to the pivot point of the transmission member 102, that is, the rotation radius of each point, are the operating angle between ij and the operating angle between mn. The relationship between
The rotation angle ratio is set to correspond to the relationship between the required rotation angle of the support member 59 and the required rotation angle of the support member 83 in the figure, and the rotary solenoid 96 is rotated by a predetermined angle (between p and q). By moving it, each of the above-mentioned required rotation angles can be obtained.

In this way, the link mechanism of the switching operation system is constructed.

Next, the operation in the above configuration will be explained.

First, when feeding the film, the rotary solenoid 96 is energized and the lever 9 is moved as shown in FIG.
8 is rotated from the q position shown in the figure (this state is in when the film is ejected) to the p position. For this reason,
The lever 99 rotates from the i position to the j position via the connecting member 100, and the support member 83 rotates from the n position to the m position via the transmission member 102. Therefore,
The support member 59 and roller 52 of the feeding drive mechanism 51 rotate in the I→J direction from the state shown by the imaginary line in FIG. Clamp the ends of the cut film. In addition, the support member 83 of the direction switching drive mechanism 75, the roller 7
6, 77, and the pulley 78 are similarly rotated in the N→M direction shown in FIG. state. In this state (actually, at the same time as the rotary solenoid 96 is energized) motor _M1 is rotated, and chain CH
is driven in the O→P direction in Figure 3, and the motor
Rotate M ₂ in the direction S→T in the figure at the first set speed. Then, the sheet film held by the feed-out drive mechanism 51 is sequentially driven by the feed-out drive mechanism 51, the direction switching drive mechanism 75, and the conveyance drive mechanism 62 at speeds of V ₁ , V ₄ , and V _2F , and finally the sheet film is conveyed. It is sent out from the drive mechanism 62 (into the close contact holder 12). At this time, since the respective drive speeds are in the relationship V ₁ <V ₄ <V _2F , the sheet film is conveyed while being given an appropriate tension, and is conveyed smoothly without causing any inconvenience such as sagging.

When the film is to be ejected, the rotary solenoid 96 is deenergized and the lever 99 is rotated from the j position to the i position in FIG. 4 by the biasing force of the spring 101. (The lever 98 is in the q position.) Therefore, the support member 83 is rotated from the m position to the n position, and the feed drive mechanism 51 and the direction switching drive mechanism 75 are in the open state and in the open state shown by imaginary lines in FIG. 2, respectively. 2
The state will be as follows. In this state (actually, at the same time as the rotary solenoid 96 is deenergized), the motor _M1 is rotated in the opposite direction to that during supply, and the chain CH is
While driving in the direction of P→O in the figure, the motor _M2 is also driven at the second set speed in the direction of T→
Rotate in the S direction. In this manner, the sheet film is sequentially transported through the transport drive mechanism 62 → direction switching drive mechanism 75 → storage drive mechanism 70, and is stored in the take-up magazine 16. At this time, the conveyance speeds V _2T , V ₄ and V ₃ of the conveyance drive mechanism 62, direction switching drive mechanism 75, and storage drive mechanism 70 have a relationship of V _2T <V ₄ <V ₃ , which is the same as at the time of supply. Transported smoothly.

As described above, the present invention comprises a pair of drive mechanisms, one of which is capable of opening and closing between the other and the other to sandwich the unphotographed sheet film taken out from the unphotographed film storage case. It has a first drive mechanism for transporting the film and a function for driving the sheet film in two opposite directions, and when feeding the film, the sheet film is fed into the close contact holder at the standby position by operation in the first direction, and the film is ejected. a second drive mechanism that guides the sheet film from the close contact holder by operating in a second direction;
a third drive mechanism that feeds the sheet film into the photographed film storage case; a first state in which both ends are opposed to the first drive mechanism and the second drive mechanism; and a state in which the third drive mechanism and the second drive mechanism The sheet film has a function of driving the sheet film in two different directions by switching the direction between a second state in which both ends are opposed to the drive mechanism, and when the film is supplied, the first direction in the first state is set. The sheet film conveyed from the first drive mechanism is fed into the second drive mechanism by the operation, and when the film is ejected, the sheet film is transferred to the second drive mechanism by the operation in the second direction in the second state.
and a fourth drive mechanism that feeds the sheet film conveyed from the drive mechanism to the third drive mechanism, and the first drive mechanism is opened and closed by rotation of one of the drive mechanisms. and a first actuating member integrally coupled to one of the first drive mechanisms, such that the direction switching operation of the fourth drive mechanism is performed by the rotation thereof, and a second actuating member integrally coupled with the fourth drive mechanism; a transmission member that connects the first and second actuating members and transmits rotational force at a predetermined rotational angle ratio; By using a link mechanism having a drive source that directly or indirectly rotates either of the second actuating member or the second actuating member by a predetermined angle, a simple operation using a single drive source is possible. With this configuration, it is possible to provide an X-ray imaging apparatus that can stably run a film.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without changing the gist thereof.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram for explaining an apparatus to which an embodiment of the present invention is applied, and FIGS. 2, 3, and 4 respectively show a film transport system, a drive system, and a switching system according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram showing the configuration of an operating system. 51... Feeding drive mechanism (first drive mechanism),
62... Conveyance drive mechanism (second drive mechanism), 70...
Storage drive mechanism (third drive mechanism), 75... direction switching drive mechanism (fourth drive mechanism), 86, 87, 8
8, 90, 91... Sprocket, CH... Chain, 93, 95... Gear, M ₁ , M ₂ ... Motor, 99
... Lever (first operating member), 83... Support member (second operating member), 102... Transmission member, 96... Rotary solenoid (drive source).

Claims (1)

[Claims] 1. Take out an unphotographed sheet film from the unphotographed film storage case, send it to a close contact holder that moves between a photographing position and a standby position, hold it in close contact, and move this close contact holder to the photographing position to perform photographing. After that, the X-ray imaging apparatus is configured to take out the photographed sheet film from the close contact holder and send and store it in the photographed film storage case, and the a first drive mechanism provided near the unphotographed film storage case for pinching and transporting the taken out unphotographed film by the opening/closing operation; and a transport drive source, and located near the standby position of the contact holder. a second drive mechanism for transporting the unphotographed film transported by the first drive mechanism to the contact holder and taking out the photographed film from the contact holder by conveying in the reverse direction; and a second drive mechanism for storing the photographed film. A third drive mechanism is provided in the photographed film storing section of the case and guides and stores the photographed film taken out from the close contact holder and sent, and the film is configured to be able to transport the film in the direction of feeding into and taking out from the close contact holder. It is arranged between both the third drive mechanism and the first drive mechanism and the second drive mechanism, and when the sheet film is conveyed to the close contact holder, the first drive mechanism side and the second drive mechanism are arranged. In order to communicate between the second drive mechanism side and between the third drive mechanism side and the second drive mechanism side when transporting the photographed film from the close contact holder to the photographed film storage case. a fourth drive mechanism which is provided to be able to switch the film transport path and whose transport drive direction is controlled to transport the film in the target direction; and a fourth drive mechanism that controls the film transport in the first, third and fourth drive mechanisms. and a common single drive source that provides a driving force for the first drive mechanism, and a single drive source that controls the film clamping operation of the first drive mechanism and the film conveyance path switching operation of the fourth drive mechanism. An X-ray imaging device comprising a link mechanism that operates according to the direction of conveyance.