JPH03204632A - Cassetteless quick photographing device - Google Patents

Abstract

PURPOSE:To eliminate need that an operator goes to a quick photographing device and to automatically shield light so that an X ray film is not exposed by the light from the noise elimination device by allowing a shutter opening and closing driving mechanism to automatically act with the aid of the selection switching of a stimulative phosphor sheet (IP) and closing the shutters of a supply magazine for a film and a housing magazine. CONSTITUTION:The shutter opening and closing driving mechanisms 83 and 84 automatically act by the selective switching of the X ray film 18 or an IP so that the shutters 7 of the supply magazine for a film 8 and the housing magazine 9 are opened when the film 18 is selected and they are closed when the IP 20 is selected. Thus, the need that the operator specially goes to the casseteless quick photographing device 6' is eliminated and the light is automati cally shielded so that the film 18 is not exposed by the light from the noise elimination device when the IP is used. Therefore, the shutter 7 need not be manually opened or closed every time that the film 18 or the IP 20 is switched and operability is improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves selecting an X-ray film or a stimulable phosphor sheet, transporting it to an imaging position on an X-ray fluoroscopic imaging table, and transporting each film after imaging. Regarding cassette-less copying devices that use both X-ray film and stimulable phosphor sheets to be stored in storage magazines, in particular, when using stimulable phosphor sheets, the system automatically prevents the light from the noise canceling device from exposing the X-ray film. The present invention relates to a cassette-less snapshot device that can be completely shielded from light.

[Conventional technology]

The X-ray fluoroscopy table uses an image intensifier (r1.1.J
As shown in Figure 3, there is a top plate 2 on which the subject 1 is placed, and the upper side of this top plate 2. an X-ray tube 4 that is installed in the object 1 and emits X-rays 3 to the object 1; and 1, 1 that forms an optical image by entering the
．． 5 and.

It comprises a cassette-less quick-shooting device w6 that conveys the X-ray film to a position where a transmitted X-ray image of the subject 1 is formed, photographs it, and stores the photographed film back into its original position. Here, 1
．． The transmitted X-ray information of the subject 1 from 1.5 onward is displayed on a monitor by an image system (not shown). Then, while being observed by a doctor or operator, this image is photographed on X-ray film by the cassette telegraph device 6 as needed.

This cassette telephoto copying device 6 takes out X-ray films one by one from a supply magazine in which a large number of X-ray films are stacked, places them between two intensifying screens, and then transports them to the imaging position to perform imaging. This system automatically stores X-ray films in a storage magazine in sequence.

However, in recent years, stimulable phosphor sheets have come to be used instead of the above-mentioned X-ray film. This is generally an imaging plate (Igoura-ging P1
ate), hereinafter abbreviated as rIPJ. When this IP is irradiated with radiation such as X-rays and γ-rays, a portion of the energy of the radiation is accumulated.

A flexible material plate is coated with a phosphor that causes stimulated luminescence depending on the accumulated energy when exposed to excitation light such as visible light. This stimulated luminescence is read by a photoelectric element or the like, and the read signal is used to obtain image information, which is ultimately converted into an image on a monitor or hard copy and used for diagnosis. In addition, - The process of applying the above excitation light to the fishing boat and reading the stimulated luminescence with a photoelectric element and converting it into an image is not performed on an X-ray fluoroscopic imaging table, but is performed with a reading device installed at another location. . This IP has the advantage that it is easy to store and search images because the image information is digital, and it also has the excellent property of being able to adjust the image quality through image processing, which reduces the number of shots taken. It has the characteristics of being able to reduce the radiation dose to the subject and also allowing the same product to be used repeatedly.

As described above, even though IP can be used repeatedly, it is expensive, so it is not possible to prepare a large number of IPs, and there is a demand for its use in combination with low-cost X-ray film. Recently, in response to this demand, a cassette-less quick-shooting device has been developed which is capable of using both IP and X-ray film. As shown in FIGS. 4 and 5, the currently proposed combination type cassette telephoto copying device 6 is
A film supply magazine 8 includes a shutter 7 for loading and unloading line film and stacks unshot film; a film storage magazine 9 also includes a shutter 7 and stores exposed film; and a sheet supply magazine 9 includes a shutter 7 for stacking unshot film. It has a magazine 10 and a sheet storage magazine 11 for storing photographed IP, which transports selected X-ray film or IP to the photographing position of the X-ray fluoroscopy table, and stores the photographed films respectively. It is designed to be stored in magazines 9 and 11.

Furthermore, in FIG. 4, the cassette telephoto copying device 6
The above-mentioned film or sheet supply magazine 8
, 10 or 61 sheets are provided. This holder 12 can be moved along rod members 13° and 14 to a photographing position 15 (shaded area) by a drive mechanism (not shown), and after moving to this photographing position 15,
Photographing of the subject 1 (see FIG. 3) is performed. When the imaging is completed, the holder 12 returns to its original position (imaging standby position) surrounded by dotted lines, and the X-ray film or IP is stored in the respective storage magazines 9 and 11. Furthermore, the fifth
As shown in the figure, in order to take in and out the X-ray film inside the film supply magazine 8 and storage magazine 9 with these magazines removed from the cassette telephoto copying device 6, the shutter 7 is moved as shown by arrows A and H. A manual opening/closing lever 16 is provided which can be opened and closed.

Here, in the above-mentioned combination type cassette telephoto copying device, as described in Japanese Patent Laid-Open No. 57-119340, when using the IP, the surface of the IP is irradiated with light to eliminate noise. A noise canceling device is built in in the middle of the conveyance path (provided inside the casing 17).

[Problem to be solved by the invention]

However, in such a combination-type cassette-less speed copying device, as shown in FIG. So,
When using IP, operate the above noise canceling device to
When light is irradiated onto P, the leaked light hits the X-ray film stored in the film supply magazine 8 and the storage magazine 9, and the X-ray film may be exposed to light. Therefore, conventionally, when taking pictures using IP, the operator goes to the cassette telephoto copying device 6 each time, manually operates the opening/closing lever 16 shown in FIG. Shutter 7 of magazine 9
had to be closed one by one. Also, after that,
When taking an image using X-ray film, the operator had to go back to the cassette telephoto copying device 6 and manually open the shutter 7 by operating the opening/closing lever 16. Therefore, X-ray film or IP
It is necessary to manually open and close the shutters 7 of the film supply magazine 8 and the storage magazine 9 each time the film is switched, which is cumbersome and reduces the operability of the cassette telephoto copying device 6. Particularly, when examining and photographing a large number of subjects, the efficiency of the examination and photographing using the X-ray fluoroscopic imaging table is reduced.

Therefore, the present invention solves these problems.

To provide a cassette-less snapshot device capable of automatically blocking light from a noise canceling device so that the X-ray film is not exposed to the light when using IP.

[Means to solve the problem]

In order to achieve the above object, the cassette telephoto copying apparatus according to the present invention has a film supply magazine which is equipped with a shutter for loading and unloading X-ray film and stacks unexposed films, and a film storage magazine which is also equipped with a shutter and stores exposed films. It has a magazine, a sheet supply magazine for stacking unphotographed stimulable phosphor sheets, and a sheet storage magazine for storing photographed stimulable phosphor sheets.

A cassette telescope that combines X-ray film and stimulable phosphor sheets, which selects X-ray film or stimulable phosphor sheets, transports them to the imaging position of the X-ray fluoroscopic imaging table, and stores the photographed films in their respective storage magazines. In a quick copy device, the shutters of the film supply magazine and the storage magazine are opened when the X-ray film is selected, and the stimulable phosphor sheet is automatically activated by switching the selection of the X-ray film or the stimulable phosphor sheet. A shutter opening/closing drive mechanism is provided which closes when .

[For production]

In the cassette telephoto copying device configured in this manner, the shutter opening/closing drive mechanism automatically operates by selecting X-ray film or stimulable phosphor sheet as the recording medium, and the shutters of the film supply magazine and the storage magazine are operated. It opens when the X-ray film is selected and closes when the stimulable phosphor sheet is selected. This allows the operator to automatically block the light from the noise canceling device from exposing the X-ray film when using a stimulable phosphor sheet, without the operator having to go to the cassette-less copying device each time. can.

〔Example〕

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

FIG. 1 is a central vertical cross-sectional view showing an embodiment of the cassette telephoto copying apparatus according to the present invention, and corresponds to the cross-sectional view taken along the line 1--Ill in FIG. This cassette telephoto copying device 6' selects an X-ray film or a stimulable phosphor sheet (IP), transports it to the imaging position of the X-ray fluoroscopy table, and stores the photographed film in each storage magazine. It is a film and IP combination type, and as shown in Fig. 3, it constitutes a part of the X-ray fluoroscopic imaging table, and as shown in Fig. 1, it has a film supply magazine 8 and a film storage magazine. 9, a sheet supply magazine 10, and a sheet storage magazine 11.

The film supply magazine 8 is equipped with a shutter 7 (see FIG. 5) for loading and unloading the X-ray film 18, and is used to stack unexposed films, and the film storage magazine 9 is also for loading and unloading the X-ray film 18. It is equipped with a shutter 7 to store photographed film, and is attached to an attachment/detachment opening 19 on the front side of a housing 17 in FIG. 1.

In addition, the sheet supply magazine 10 is equipped with an unphotographed machine P20.
The sheet storage magazine 11 is
It stores photographed lP2O, each with one housing.
It is attached to the attachment/detachment port 21 on the front side of 7. Then, the film supply magazine 8 and the sheet supply magazine 10
At the rear end, a recording medium supply section 23 consisting of a suction pad 22 and a drive device (not shown) is connected to each of the magazines 8, 10.
It is provided for dual use. This recording medium supply section 23 is
It moves vertically and horizontally along guide bars 24 and 25, and picks up and takes out the X-ray film 18 or lP2O one by one. Furthermore, a holder 12 for holding an X-ray film 18 or lP2O is provided at the top of the housing 17. This holder 12 has a two-layer structure, and holds lP2O in the upper part and X-ray film 18 in the lower part.

Hereinafter, the cassette telephoto copying device 6' having such a schematic configuration will be described.
Explain the detailed configuration and operation of. First, the case where IP is used will be explained. In the sheet supply magazine 10, unphotographed lP2O is stacked. When an operator performs photographing, the suction pad 22 of the recording medium supply section 23 takes out the IP2O one by one, and the tip thereof is inserted between the conveyance rollers 26 and 27. The transport rollers 26 and 27 are the transport rollers 26 and 27.
8.29, 30.31, guide plate pair 32°33,
A guide plate 34, conveyance rollers 35 and 36 which will become a conveyance path for X-ray film, which will be described later, and a guide plate 37 together with a carry-in path 38.
These conveyance rollers are driven by a drive device (not shown).

In the middle of the transport path of the carry-in path 38, there is provided a noise erasing device 39 for erasing noise remaining on the surface of the lP2O and its control device (not shown). Due to these, the lP taken out from the sheet supply magazine 10
The 2O is conveyed to a noise canceling device 39, and the noise canceling device 39 shines light onto the surface of the 1P2O to eliminate remaining noise.

The guide plate pairs 40, 41, 42, 43, 44° 45, and conveyance rollers 46, 47, 48 are separated from the above-mentioned conveyance rollers, etc., and swing in the direction of arrow A about a rotating shaft 49. (The drive mechanism, control device, etc. are not shown) Evacuation mechanism 5
0 is formed. Then, the lP2O that has been taken out from the sheet supply magazine 10, conveyed to the noise canceling device 39, and noise canceled is placed between the pair of guide plates 40.41 and 42.43 of the above-mentioned shunting mechanism 50, and between the conveying roller It is designed to be carried in between 46 and 47.

Note that at this time, the shunting mechanism 50 is in the position shown in the figure.

The holder 12 has a two-layer structure as described above. This holder 12 includes plate members 51, 52, 53, springs 54, 55° 56 that support these plate members, and an opening/closing mechanism 57 (W movement mechanism, control device, etc.) for pushing down the plate members. (not shown). Note that the plate members 51 and 5
2 has a low radiation absorption coefficient, and the plate member 53 is made of a material with a high radiation absorption coefficient to reduce backscattered radiation during imaging, and the movement and amount of the plate members 51, 52, and 53 by the opening/closing mechanism 57 are different. 9 are to be controlled separately.

And, of this holder 12, plate members 51, 52, 53
and a support member 58 that supports the springs 54, 55, 56,
Rollers 60 and 61 are arranged so as to be movable on the carrier member 59 in the directions indicated by arrows B and B' by a drive device (not shown).
It is shaped like it is mounted on top. Linear motion bearings 62 and 63 are fixed to the carrier member 59, and rod members 13 and 14 are fixed to the main body of the cassette-less copying apparatus in correspondence with the linear motion bearings 62 and 63. The movement of the support member 58 in the holder 12 over the carrier member 59 and the movement of the carrier member 59 between the photographing position and the photographing standby position are performed by a drive mechanism not shown.

When lP2O is transported to the shunting mechanism 50, the opening/closing mechanism 57 opens the space between the plate members 51 and 52, and the support member 58 moves in the direction shown by arrow B'. Then, the conveyance roller 46°47.48 of the shunting mechanism 50 rotates, and the lP
2O is carried into the holder 12). After being carried in, the holder 12 moves in the direction shown by arrow B, and the opening/closing mechanism 5
7 closes the gap between the plate members 51 and 52, respectively lP2
The shunting mechanism 50 also rotates counterclockwise while being in close contact with O.

The holder 12 is placed at the photographing position 1 together with the carrier member 59.
5 (see FIG. 4), and the subject 1 is photographed. After the shooting is completed, the holder 12 returns to the shooting standby position,
The shunting mechanism 50 rotates clockwise, and the opening/closing mechanism 57 now pushes down the plate members 51 and 52 to a position where they can be inserted between the conveyance rollers 47 and 48. Then, while moving the holder 12 in the direction indicated by arrow B', a gap is opened between the plate members 51 and 52, and the end face of the lP2O is caught between the conveying rollers 47 and 48. Thereafter, lP2O is transported toward the sheet storage magazine 11. In addition, here, guide plate pair 6
4 and 65 and conveyance rollers 66 and 67 form a discharge path 68. In addition, lP2O is the seat storage magazine 1.
1, the barcode reader 69 reads lP2.
The barcode attached to the back of the O is read. Note that the forced storage section 70 is provided to completely store lP2O in the sheet storage magazine 11.

Next, a case where an X-ray film is used will be explained.

When X-ray film is used, the X-ray film 18 is taken out one by one by the recording medium supply section 23 from the film supply magazine 8 in which unexposed X-ray films 18 are stacked, and the leading edge of the X-ray film 18 is taken out by the transport rollers 35 and 36. inserted between. Note that these conveyance rollers 35 and 36 and the guide plate 3
7 forms a part of the carry-in path 38 as described above. In addition, the noise canceling device 39 used when using lP2O
is prevented from operating by its control device (not shown). And the X-ray film 18 is lP2O
In the same way as when using
It is scheduled to be delivered between June 6 and 47. Note that at this time, the evacuation mechanism 50 is in the position shown in the figure. When the X-ray film 18 is transported to the shunting mechanism 50 and photographed, the opening/closing mechanism 57 opens the space between the plate members 52 and 53, and the support member 58 moves in the direction shown by arrow B'. Then, the conveyance rollers 46, 47, 4 of the shunting mechanism 50
8 rotates, and the X-ray film 18 is carried into the holder 12. Incidentally, intensifying screens (not shown) are attached to the surfaces of the plate members 52 and 53 on the X-ray film 18 side, respectively. After carrying the X-ray film 18 between the plate members 52 and 53, the support member 58 moves in the direction shown by arrow B, the opening/closing mechanism 57 closes the gap between the plate members 52 and 53, and the X-ray film 18 The shunting mechanism 50 rotates counterclockwise as it comes into close contact with the. The holder 12 is then moved to the photographing position 15 (see FIG. 4), and the subject 1 is photographed. After shooting,
The holder 12 returns to the photographing standby position again, and the opening/closing mechanism 57 pushes down the plate members 52, 53 to a position where they can be inserted between the conveying rollers 46 and 47, while the shunting mechanism 50 rotates clockwise. Then, the holder 12 is moved in the direction shown by the arrow B', and the end surface of the X-ray film 18 is caught between the transport rollers 46 and 47. Thereafter, the X-ray film 18 is transported toward the film storage magazine 9.

Here, the guide plate 71, conveyance rollers 72, 73, conveyance rollers 74.75, guide plates 76.77, guide plate 78, and conveyance rollers 79.80 form an X-ray film discharge path 81. are doing. Note that before the X-ray film 18 is stored in the film storage magazine 9, the information writing device 82 writes the name, age, photographing date, photographing conditions, etc. of the subject 1 on the X-ray film 18.

Here, in the present invention, shutter opening/closing drive mechanisms 83 and 84 are provided on the upper surfaces of the film supply magazine 8 and the film storage magazine 9, respectively. The shutter opening/closing drive mechanisms 83, 84 are automatically operated by selecting whether to use the X-ray film 18 or IP20, and the shutter 7 of each magazine 8, 9 is selected by the X-ray film 18. Open when it is opened.

It closes when lP2O is selected.

Hereinafter, a specific structural example of the shutter opening/closing drive mechanism 83, 84 will be described with reference to FIG. 2, which corresponds to the cross-sectional view taken along the line ■-■ in FIG. 5. In addition.

Since this shutter opening/closing drive mechanism has a time structure for both the film supply magazine 8 and the film storage magazine 9, here, the shutter opening/closing drive mechanism 8 provided on the top surface of the film supply magazine 8 is
3 will be explained.

That is, as shown in FIG. 2, two shutters are attached parallel to each other along the opening/closing sliding direction (directions of arrows A and B in FIG. 5) on the upper surface of the shutter provided in the upper part of the magazine 8 so that it can be opened and closed. Rack 85°86 and side plate 8 of housing 17
Pinions 92 and 93 are attached to a rotary shaft 91 that is rotatably supported through bearings 89 and 90 provided at 7 and 88 and mesh with each of the racks 85 and 86, respectively, and pinions 92 and 93 that are attached to one of the side plates 87 and rotate. A motor 94 for rotationally driving a shaft 91, and a clutch 98 for transmitting or interrupting rotational driving force from a rotating shaft 97 of a gear 96 that meshes with a gear 95 provided on the shaft of the motor 94 to the rotating wheel 91. , and a brake 99 that is attached to the other side plate 88 and applies a braking force to the rotation of the rotating wheel 91. In FIG. 2, reference numerals 100 and 101 indicate magazine rails that are horizontally attached to the inner surfaces of the side plates 87 and 88, respectively, and guide the loading and unloading of the film supply magazine 8. Further, in the figure, the control devices for the motor 94 and the brake 99 are not shown.

Next, the operation of the shutter opening/closing drive mechanism configured as described above will be explained. First, the control device for the motor 94 (not shown) moves the shutter 7 shown in FIG. The motor 94 is controlled so that the shutter 7 opens in the direction of arrow B and closes in the direction of arrow B when lP2O is used. Now, suppose that we use X-ray film 18, and first,
The clutch 98 is operated to connect the rotary shaft 97 and the other rotary shaft 91, and the brake 99 is operated to release the braking state of the rotary wheel 91. In this state, the motor 94 is rotated in a predetermined direction under the control of a control device (not shown). Then, the rotational driving force of the motor 94 is transmitted to the rotating shaft 91 via the gears 95 and 96, the rotating shaft 97, and the clutch 98, and the pinion 92° 93 attached to the rotating shaft 91 rotates. And these pinions 92°93
are engaged with racks 85, 86 provided on the upper surface of the shutter, so that the rotational movement of the pinion 92, 93 is converted into a linear movement, and the shutter 7 is opened in the direction of arrow A in FIG. As a result, the film supply magazine 8 is operated by the recording medium supply unit 23 shown in FIG.
The X-ray film 18 can be taken out from the camera, and the X-ray film 18 that has been photographed can be stored inside the film storage magazine 9.

Next, when using the I P2O, the motor 94 is rotated in the opposite direction to that for the X-ray film 18 under the control of a control device (not shown). Then, due to the transmission of the rotational driving force of the motor 94, the pinions 92 and 93 attached to the rotating shaft 91 rotate in the opposite direction. Due to the engagement of these pinions 92, 93 and racks 85, 86, the shutter 7 moves in the direction of arrow B in FIG.
Closed in the direction. According to No. 29, even if the noise canceling device 39 shown in FIG. I can do it. In addition,
When using lP2O in this manner, it is preferable to operate the brake 99 to put the rotating shaft 91 in a braking state so that the shutter 7 will not open even if the opening/closing lever 16 shown in FIG. 5 is accidentally touched.

Furthermore, when attaching and detaching the film supply magazine 8 and the film storage magazine 9 to and from the cassette telephoto copying device 6', the clutch 98 is operated to connect the rotary shaft 97 and the other rotary shaft 91.
It is preferable that the magazines 8 and 9 be easily inserted or removed by releasing the connection therebetween and operating the brake 99 to release the braking state.

Note that the shutter opening/closing drive mechanisms 83 and 84 are as follows.

The structure is not limited to the structure shown in FIG. 2, and the shutters 7 of the film supply magazine 8 and the film storage magazine 9 may be automatically opened when X-ray film 18 is selected, and automatically closed when lP2O is selected. It may have any structure. For example, all the rotational drive mechanisms from the motor 94 to the pinions 92 and 93 shown in FIG. 2 may be housed in the magazines 8 and 9.

[Effects of the Invention] Since the present invention is constructed as described above, the shutter opening/closing drive mechanisms 83 and 84 are connected to the X-ray film 18 as a recording medium.
Or it operates automatically by switching lP2O selection,
The shutters 7 of the film supply magazine 8 and the storage magazine 9 are opened when the X-ray film 18 is selected.
Can be closed when lP2O is selected. Due to this.

The operator can automatically block the light from the noise canceling device 39 from exposing the X-ray film 18 when using lP2O without having to go to the cassette-less snapshot device 6' one by one. Therefore, it is not necessary to manually open and close the shutters 7 of the film supply magazine 8 and the storage magazine 9 each time the X-ray film 18 or lP2O is changed, as in the conventional case, and the operability of the cassette telephoto copying device 6' is improved. can be improved.

In particular, it is possible to improve the imaging efficiency of the X-ray fluoroscopy table when examining and imaging a large number of subjects.

[Brief explanation of drawings]

FIG. 1 is a central vertical sectional view showing an embodiment of the cassette telephoto copying device according to the present invention, and FIG. 2 is a sectional view corresponding to the sectional view taken along the line n-■ in FIG. 5 showing a specific structural example of the shutter opening/closing drive mechanism. 3 are explanatory diagrams showing the overall configuration of an X-ray fluoroscopy table to which the present invention and a conventional cassette-less rapid-transmission apparatus are applied, FIG. 4 is a perspective view showing the external appearance of a conventional cassette-less rapid-transmission apparatus, and FIG. 5 FIG. 2 is an external perspective view showing a film supply magazine or storage magazine. 6'... - Force setterless snapshot device, 7... Shutter. 8... Film supply magazine, 9... Film storage magazine, 10... Sheet supply magazine. DESCRIPTION OF SYMBOLS 11... Sheet storage magazine, 12... Holder, 15... Imaging position, 18... X-ray film, 20... Stimulable phosphor sheet (IP), 3
9... Noise canceling device, 83.84... Shutter opening/closing drive mechanism, 85.86... Rack, 91.9
7...Rotation axis. 92.93...Pinion, 94...Motor,
95°96...gear, 98...clutch, 9
9...Brake. j1!2Figure 1!3 Maroto Zude Hitachi Medical Co., Ltd.

Claims (1)

[Claims] A film supply magazine with a shutter for loading and unloading X-ray film and stacking unexposed films, a film storage magazine also equipped with a shutter and storing exposed films, and a sheet for stacking unexposed stimulable phosphor sheets. It has a supply magazine and a sheet storage magazine that stores stimulable phosphor sheets that have been imaged, and selects X-ray film or stimulable phosphor sheets and transports them to the imaging position of the X-ray fluoroscopic imaging table and images them. In a cassetteless copying machine that uses X-ray film and a stimulable phosphor sheet to store finished items in their respective storage magazines, it automatically operates by switching the selection of the X-ray film or stimulable phosphor sheet. A cassette-less snapshot device characterized by being provided with a shutter opening/closing drive mechanism that opens the shutters of a film supply magazine and a storage magazine when selecting an X-ray film and closes them when selecting a stimulable phosphor sheet.