JPS62141533A - Cassetteless quick photographing device - Google Patents

Abstract

PURPOSE:To enable both transmission photography and quick photography by using a film cassette by replacing a film holding container and a cassette receiving frame. CONSTITUTION:In the normal operation of a cassetteless device, one film taken out of a film take-out and storage mechanism 80 is received by the holding container 20 at S1 (film passing position) and brought into contact with an intensifying screen to stand by at S2 (stand-by position) throughout a transmission period. The film holding container 20 at this position is outside a transmission irradiation field 90. When an operator pushes the quick photography switch on a console panel after positioning a photographic part by transmission, the film holding container 20 is conveyed by a lateral driving mechanism 40 to S3 (photographic position) within about 0.5-1sec and a photograph is taken. The film holding container 20 is returned to S1 after the photography and the exposed film is put in the film take-out and storage mechanism 80.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cassette-less quick-shooting device, and particularly to a film cassette that is suitable for loading a film of a different size from the film size that can be used as a cassette-less device for quick-shot photography. This relates to a snapshot device.

[Background of the invention]

X-ray speed copying devices (hereinafter simply referred to as speed copying devices) have been transitioning from those using film cassettes (hereinafter simply referred to as cassettes) to cassette-less speed copying devices that do not use cassettes. Currently, two types of film can be loaded into the cassette telesing device at the same time: a device exclusively for 4-cut film (10 x 12 inches), a combination of 4-cut film and large square film (14 x 14 inches), or continental film (11 x 14 inches). There are devices on the market that can be used with one type of film selected from among four-slice film, large-square film, and continental-format film. The reason for these is that the film size needs to be changed depending on the part of the subject to be imaged.

Each of these devices has its advantages and disadvantages, and while the four-section device has a simple structure and is inexpensive, it is impossible to image the entire area on a single film for areas such as the intestines, and it takes several images. In addition, other devices have complicated structures and are expensive because they transport large-sized films that are rarely used.

Therefore, in a device exclusively for four-slice format, a method has been adopted in which cassettes such as large square rows are loaded into a film cassette receiving frame, and the receiving frame is manually inserted into the X-ray imaging position from the outside to perform imaging. However, this method has the disadvantage that the film cassette is already positioned at the photographing position, making it impossible to perform fluoroscopy immediately before photographing.

Japanese Patent Publication No. 52-420 as a known technique to improve the above drawbacks.
There is one disclosed in Publication No. 35. However, there is a lack of awareness that this method is unsuitable for imaging the gastrointestinal tract, which requires rapid snapshot imaging, as this leads to an increase in the size of the device, and the cassette holder and its holder must be moved at the same time. It was something.

Furthermore, the cassette was not suitable for continuous use.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a compact cassette-less speed-photographing apparatus that is capable of both fluoroscopy and quick-shot photography using a film cassette, and in which the cassette can be easily replaced.

[Summary of the invention]

In order to achieve the above object, the quick copying device according to the present invention, when used as a cassetteless device, can be used by attaching a film holding container equipped with film sensitization to the quick copying device, and when using the cassette. When photographing,
A cassette receiving frame is attached in place of the film holding container, and the cassette is loaded into the receiving frame and transported to enable quick photography.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 shows a snapshot mechanism of a snapshot device according to the present invention.
Figure (a) shows the first
Figure (b) shows a configuration for performing cassette-type quick-shot photography. Reference numeral 1 denotes a snapshot case which is shielded from light and X-rays (other than the irradiation field) so that the film is not exposed to light, and is equipped with a mechanism for taking out a film holding container 20 or a cassette receiving frame 60. A guide mechanism 5 for guiding the film holding container 20f is disposed on the inner surface of the snapshot case 1. The guide mechanism 5 includes guide tools 6 and 7 fixed to the snapshot case 1;
The guide frame 10 is guided by the guide tools 6 and 7. Guide tools 5 and 6 guide the guide frame 1° in the direction of arrow C-D shown in the figure, and guide frame 10 guides the film holding container 2.
0 in the direction of the arrow A-B shown in the figure, and as a result, it is possible to perform horizontal divisional shooting of the film at the shooting position. The guide frame i'O is composed of frame members 11-15. The frame member 12 is a rail with a C-shaped cross section, and the frame member 11 is a rail with a U-shaped cross section.

Frame members 13, 14, and 15 are rectangular members that connect the frame members 11 and 12.

A film holding container 20 is movably placed on the guide frame 1'0. The film holding container 20 has a holding frame 22
A holder 21 for holding the film is supported inside. The holder 21 has a known structure in which an upper frame and a lower frame are used as one end and a fulcrum to be opened and closed, and an intensifying screen is attached to each opposing surface of the upper frame and lower frame. And holding frame 2
A connector 23 is slidably supported on 2.

The film holding container 20 and the guide frame 10 are connected to a horizontal drive mechanism 40 and a vertical drive mechanism 3o, respectively. The film holding container 2o and the lateral motion mechanism 40 are connected by a pulley 42 fixed to the output shaft of a drive motor 41.
A clamp holder 52 is movably provided on a support 51 fixed to a belt 44 which is hooked around a pulley 43 disposed opposite to the pulley 42, and slides on the holding frame 22 of the film holding container 2o. This is done between the connector 23 and the connector 23 that can be provided. This coupling mechanism 50 is shown in FIG. 5 and will be described later. The guide frame 1o and the lateral drive mechanism 30 are connected by a chain wheel 3 fixed to the output shaft of a drive motor 31.
2 and a chain wheel 33 provided opposite to the chain wheel 33, the end of the chain 34 is connected to a connecting fitting 16 provided on a frame member 14 forming a part of the guide frame 10. There is.

Next, the cassette receiving frame 60 used after removing the film holding container will be explained. Figure 2 shows the cassette holder frame 6.
0 is shown. The receiving frame 61 is made by bending a rectangular plate into a U-shape at both opposite end edges 61ae, and attaching the cassette 71 to the receiving frame 61.
Or 72 guidance and prevention of falling off. Receiving frame 6
Behind the cassette mounting surface of No. 1, a J connector 23 having the same structure as the film holding container 20 is attached so as to be slidable with respect to the receiving frame 61, and a guide frame 100
Rollers 62 and 63 running on frame members (rails) 11 and 12 are rotatably attached. A stopper mechanism is provided on one side edge of the receiving frame 61 to prevent the inserted cassette 71 or 72 from being pulled out. This stopper mechanism is constructed by stacking a plurality of elastic plates, for example, a stopper holding plate 64 made of a plate spring material into a rectangular shape, and a substantially right triangular stopper 65 attached thereto in a stepwise manner.

A hole through which the stopper 65b passes is provided on the side surface of the stopper holding plate 64a and the receiving frame 61 that hold the stopper 65a'e. Further, the stopper holding plate 64a closest to the receiving frame 61 has its free end extending outward from the end surface of the receiving frame 61 and is fixed thereto. This is so that all the stoppers are opened when the stopper holding plate 64a is opened. A pressing mechanism for pressing the inserted cassette against the stopper mechanism is provided at a position facing the cassette insertion opening on the cassette mounting surface. This pressing mechanism has a fulcrum hole provided at the intersection of the arms of the L-shaped lever 66.

A shaft 67 is passed through the fulcrum hole and supported, and the lever 66? A tension coil spring 68 is suspended on one of the arms, and the tension of the coil spring 68 applies a pressing force to the cassette. A roller 69 is rotatably attached to the arm that applies pressing force to the cassette, reducing the frictional resistance between the tip of the arm and the cassette. FIG. 3 is a sectional view taken along line GG' in FIG. 2.

In the snapshot apparatus configured as described above, a procedure for performing snapshot photography using the film holding container 20f will be described.

FIG. 4 shows a moving path diagram of the film holding container 60 of the snapshot device only in the lateral direction (direction intersecting the longitudinal direction of the body axis of the subject). Normally, the operation of the cassette removal device is such that one film taken out from the film take-out/storage mechanism 80 is transferred to the film holding container 20 at 81 (film delivery position).
82 (
Waiting position (standby position) during the fluoroscopy period. In this position, the film holding container 20 is outside the fluoroscopy field 90.

After the operator has finished positioning the area to be imaged using fluoroscopy, when the operator presses the quick-shooting switch on the operation panel (not shown), the film holding container 20 is moved by the lateral drive mechanism 40 to 83 (
The camera is transported to the photographing position) in about 0.5 to 1 second, and photographed. When the shooting is finished, the film holding container 20 is returned to S.
Returning to step 1, the photographed film is stored in the film ejecting and storing mechanism 80.

Next, a procedure for removing the film holding container 20 and replacing it with the cassette receiving frame 60 to take a snapshot will be described. Film holding container 20t - After taking measures to prevent the unshot film loaded in the film ejection/storage mechanism 80 from being exposed before removing the film holding container 20t, operate the film holding container moving switch (not shown) to remove the film holding container 20'. e
Move to S4 (attachment and detachment position). At attachment/detachment position S4,
The coupling mechanism 50 shown in FIG. 1 is released.

The configuration of the coupling mechanism 50 and its operating method will be explained using FIG. 1 and FIG. 5. The connector 23 provided on the film holding container 20 and the cassette receiving frame 60 includes a rectangular connector 24 and a guide 25 fixed to the end of the connector 24.

On the other hand, a support 51 is fixed to the belt 44 of the lateral drive mechanism 40 via a belt fixture 53. A U-shaped holder 54 is fixed to the support 51.
A shaft 55 is inserted through the shaft 54, and a clamping tool 52 and a compression coil spring 56 are fitted to the shaft 54. Compression coil spring 56
always presses the clamping tool 52 in one direction. The support 51 is fixed to a sliding member 9 guided by a sliding V-rule 8 attached to the inner surface of the snapshot case 1, and is capable of tilting the snapshot device in the direction of gravity and moving the connector 23. This prevents the support 51 from shifting due to movement.

To release the coupling mechanism 50, place the film holding container 20 or the cassette receiving frame 60 at the attachment/detachment position S4, and push up the clamping tool 52 in the direction of arrow E.
This can be achieved by a simple operation of pulling out the 0 or cassette receiving frame 60. The installation procedure can be performed in reverse order.

With the above operation, the cassette receiving frame 60t-
When the connection to the lateral drive mechanism 40 is completed, a film cassette of a desired size is loaded into the cassette receiving frame 60. In the direction of arrow H shown in FIG.
Insert. At this time, the stopper 65a first stops the cassette 7.
1, the stopper holding plate 64a is bent, and the stopper 65b is also retracted accordingly. If the cassette 71 is pressed again, the cassette 71 presses the lever 66 of the pressing mechanism, and when the stopper 65a acts on the cassette 71, loading of the cassette is completed. After the cassette loading is completed, operate the film holding container movement switch to move the cassette receiving frame 6 (l) to the standby position S1.
The standby position S2 has an irradiation field of 90 mm even if a large-angle array cassette is used.
Since the camera is set to ensure a complete image capture, the area to be imaged of the subject is positioned using fluoroscopy, and once the positioning is complete, the quick-shot shooting switch is pressed. Then, the cassette receiving frame 60 moves from the standby position S2 to the photographing position S3 in 0.5 to 1 second, and photographing is performed. When the photographing is completed, the cassette receiving frame 60 moves to the attachment/detachment position S4. When the stopper holding plate 64a of the cassette receiving frame 60 is opened, the photographed cassette is pushed out by the arm 66 of the pressing mechanism and taken out. If multiple cassettes are used, this operation may be repeated one after another.

During divided shooting, the cassette receiving frame 60 and the guide frame 10 are controlled simultaneously or individually by the horizontal drive mechanism 40 and the vertical drive mechanism 30 to determine the film size and the number of divisions (including direction).
This is done by moving a predetermined distance determined by In this case, the cassette receiving frame moves to the standby position S2 every time one divisional image capturing is completed, and moves to the attachment/detachment position S4 when the entire image has been imaged. By doing so, it is possible to perform fluoroscopy immediately before each image capturing.

According to this embodiment described above, the film holding container and the cassette receiving frame can be easily and directly exchanged without intermediating a medium such as a receiving frame, and the structure of the device can be simplified and lightweight. . Furthermore, it is not necessary to remove the cassette holder frame every time one cassette is photographed, and fluoroscopy and quick-shot photography can be performed by loading cassettes one after another while the cassette holder frame is attached.

〔Effect of the invention〕

As explained above, according to the present invention, in a cassette-less quick-shooting device, it is possible to perform fluoroscopy and quick-shot photography using the film cassette by replacing the film holding container and the cassette-receiving frame. Since it can be used to perform fluoroscopy and quick photography, it is possible to improve the functionality of the device. Furthermore, since the cassette receiving frame is positioned at the same standby position as the film holding container during fluoroscopy, the apparatus can be made more compact. This also brings about the effect that the cassette can be replaced with a simple operation.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the construction of a copying mechanism of a cassette-less copying apparatus according to the present invention, in which (a) shows the arrangement when used as a cassette-less copying apparatus, and (b) shows the arrangement when used with a cassette. Figure 2 is a plan view of the cassette holder frame;
The drawings are a sectional view taken along the line GG' in FIG. 2, FIG. 4 is a moving route diagram of the film holding container, and FIG. 5 is a perspective view showing the structure of the coupling mechanism. 5... Guide mechanism, 10... Guide frame, 20... Film holding container, 23... Connector, 40... Lateral direction drive mechanism, 44... Belt, 51... Holder , 52・
... Clamping tool, 60... Cassette receiving frame, 61... Receiving frame, 64... Stopper holding plate, 65... Stopper, 6
6...V bar, 68...Tension coil spring, 71.7
2... Film cassette, 80... Film ejection/storage mechanism, S2... Standby position, S3... Shooting position, S
4...Attachment and detachment position. Figure 2

Claims (1)

[Scope of Claims] 1. A container for holding a film, a guide mechanism for moving the container, a position where the film holding container is placed on standby during fluoroscopy, an X-ray imaging position, and a position for attaching and detaching the film holding container. In the cassette telephoto copying device, which is equipped with a drive mechanism for conveying and moving the film at the standby position, and a film ejection/storage mechanism for storing or unloading the film with respect to the film holding container at the standby position, A cassette-less quick-shooting device, characterized in that it is equipped with a film cassette receiving frame and enables perspective and quick-shot photography using the cassette. 2. The cassette receiving frame includes a frame body that supports opposing side edges of the cassette, and a stopper mechanism provided on the side edges of the frame body, each of which has protrusions supported by a plate-like elastic material; 2. The cassette-less snapshot device according to claim 1, further comprising a pressing mechanism for pressing the cassette against the convex body, and a connecting mechanism provided on the frame. 3. The plate-shaped elastic members of the stopper mechanism are arranged one on top of the other with different lengths, and the member close to the frame extends to the outside of the end of the frame, and by pressing the member, all 3. The cassette-less snapshot apparatus according to claim 2, wherein the stopper mechanism is released.