JPH051450B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention is incorporated into an X-ray fluoroscopy table,
This invention relates to an improvement of a quick-shot photographing device that directly takes pictures using line film.

(b) Prior art Although cassette-type quick-shooting devices have traditionally been used as quick-shooting devices, in recent years, cassette-less quick-shooting devices with built-in automatic film feeding mechanisms have achieved remarkable improvements in labor savings and efficiency. Due to its effectiveness, it is rapidly becoming popular. This cassette-less type quick-shooting device certainly has great advantages, but compared to conventional cassette-type devices, it requires complex mechanisms such as a film supply mechanism, a film transport mechanism, and an intensifying screen contact mechanism, and is larger. On the other hand, there were restrictions on the size of the film used in order to ensure transport performance. Nowadays,
As a result of various improvements, there are now products that can use film in multiple sizes (about 3 types), but the most frequently used sizes are generally given priority, and the less frequently used sizes are given priority. , inefficient, unable to maintain conveyance performance, larger size,
Currently, it is not adopted for various reasons. It has been proposed to be able to use these special sized films, especially large sized films, by using a cassette, but in the past, it was not possible to take quick shots by confirming the fluoroscopic state before taking pictures, or there were other problems. There were various problems such as the need for a drive system and the difficulty of use.

(C) Purpose This invention basically aims to expand the scope of application of a quick-shooting device, and enables a single-shot mechanism using a cassette to be added to a cassette-less type quick-shooting device at any time, thereby improving the speed of the cassette-less method. The purpose of the present invention is to increase the usable film size while maintaining the original functions, and to improve the camera so that it can be confirmed in a fluoroscopic state and taken in quick-shot mode even when a cassette is used.

(D) Structure The quick-shot photographing device according to the present invention is provided with an opening/closing opening at one end of the quick-shooting frame, a cassette holder is removably attached to the carriage through the opening, and a cassette containing film is attached/detached to/from the holder through the opening/closing opening. The present invention is characterized in that the holder and the cassette are reciprocated between a standby position and a photographing position by reciprocating the carriage.

(e) Embodiment In FIGS. 1 and 2, the main frame (hereinafter simply referred to as the quick-shot frame) 1 of the quick-shot imaging device is arranged to be perpendicular to the top plate 2 on which the patient lies. The carriage 4 to which the film 7 is supplied from the cassette-less film supply unit 3 has built-in an intensifying screen contact mechanism 5, a film holding and transporting mechanism 6 for dividing the film 7 into upper and lower parts, and transferring the film 7. has been done. This carriage 4
is guided by a spline shaft 9 and rails 10, 12, and reciprocated between the film supply position and the photographing position by a belt drive mechanism 11. This stroke corresponds to range A when photographing the entire surface. Normally, after receiving film 7, it moves to the left by the B stroke, completes the close contact operation of the intensifying screen, waits at this position, and then moves further to the left by the C stroke when the photographing signal is issued. The camera is controlled so that it advances to the shooting position.

By the way, in order to be able to divide the typical film size of 4-cut film 7, that is, 10 inches x 12 inches, into two upper and lower halves or four parts, the film 7 of this size is placed in the carriage 4 in the width direction (in the direction of movement of the carriage 4). It must be large enough to be able to move in a direction perpendicular to the object (in the vertical direction in FIG. 1). Therefore, in a normal quick-shot photographing device, the width of the quick-shot frame 1 must be at least 1.5 times the vertical dimension of the film 7 of the above-mentioned size, and the width of the carriage 4 is also large enough to accommodate a large-sized film, such as a half-cut film 14. It is larger than Film 8, which measures 17 inches by 1 inch.

Therefore, taking into account the above-mentioned size, a cassette 17 containing a large-sized film 8 is attached to the side of the carriage 4. Therefore, an opening 16 is provided on one end surface of the operator side of the snapshot frame 1, which is covered by a light-shielding lid 15 so as to be openable and closable.The cassette holder 14 is inserted through this opening 16, and the cassette holder 14 is inserted with a screw by turning the knob 13. The holder 14 is removably attached to the side of the holder 14, and the cassette 17 can be held in the holder 14 as shown in FIG. Specifically, for example, a hook is provided at the tip of the holder 14, and the holder 14 is attached while the carriage 4 is moved to the photographing position.
Next, the cassette 17 containing the film 8 is inserted into the holder 14 through the opening 16, and at this time the hook at the tip of the holder 14 is pushed down, and when it is inserted all the way, the hook returns and the cassette 17 is fixed. (See Figure 3). The holder 14 and cassette 17 thus attached can be moved along with the carriage 4 in the left-right direction in FIG. D shows the stroke from the insertion position of the cassette 17 to the standby position during fluoroscopy, and at the left end of this stroke, the cassette 17 is replaced and the holder 14
Can be attached and detached. E indicates the stroke from the standby position of the cassette 17 during fluoroscopy to the full-screen imaging position when the cassette is in use; , E may have the same value as each stroke of A and C, and therefore, it is possible to simply change the position selection without adding a special stop position for use of the cassette. In this way, even though it is a cassetteless system, the cassette 17 is attached to the side of the carriage 4, and the movement of the carriage 4 loads the cassette 1.
It is possible to perform quick photography by moving the cassette 7 to check the fluoroscopic state and then proceeding to single-shot photography using the cassette 17.

In addition, the mask and grid are in case 17.
It goes without saying that the size of the film suitable for taking single pictures should be selected, and when the cassette 17 is used, the magazine should be closed to prevent the film 7 from being exposed.

(F) Effects According to the quick-shooting device of the present invention, it is basically a cassette-less system, and a single-shot mechanism using a cassette can be added at any time without any hindrance to its functions. This allows the use of films of different sizes (for example, 14 inches x 17 inches), expanding the range of applications. In addition, rapid shooting is possible even when taking a single image using a cassette, and since the image can be taken while being confirmed through fluoroscopy, X-ray images can be obtained in good time. Further, even when a single-shot mechanism using a cassette is added, the film supply is independent, and there is no adverse effect on the cassette-less film transport, and the apparatus does not become larger or more complicated.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an embodiment of the present invention, FIG. 2 is a partially cutaway side view of FIG. 1 seen from the left, and FIG. 3 is a schematic perspective view of only the cassette and holder. . DESCRIPTION OF SYMBOLS 1...Snapshot frame, 2...Top plate, 3...Film supply section, 4...Carriage, 5...Intensifying screen contact mechanism, 6...Film holding and conveying mechanism, 7, 8...Film, 9... ... Spline shaft, 10, 12 ... Rail, 11 ... Belt drive mechanism, 13 ... Knob, 14 ... Cassette holder, 15 ... Light-shielding lid,
16...Opening, 17...Cassette.

Claims (1)

[Claims] 1. In a quick-shot photographing device having a carriage that reciprocates in a quick-shooting frame between a standby position and a photographing position while keeping the film supplied from a film supply unit in close contact with an intensifying screen, an opening/closing opening is provided at one end of the quick-shot frame. A cassette holder is detachably attached to the above-mentioned carriage through this opening, a cassette containing film is attached to and removed from the holder through the opening and closing opening, and the holder and cassette are brought to the standby position by the reciprocating movement of the above-mentioned carriage. A quick-shot photographing device characterized by being configured to move back and forth between a photographing position and a photographing position.