JPS6230028Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention involves opening an X-ray cassette, taking out a photographic film, and inserting it into an automatic film developing machine in a bright room, or setting a film guide plate in the machine in a dark room. The present invention relates to a film feeding device that manually inserts a single sheet of X-ray film and conveys it to an automatic developing machine.

A film cassette loaded into a conventional X-ray imaging device is taken out after imaging is completed, and the cassette is loaded into a film feeding device in order to feed the film to an automatic developing machine in a bright room, and the cassette is opened while shielded from light. The film supply device that automatically supplies the film in the cassette to the automatic developing machine has several detection elements arranged in front of the sheet film supply roller to detect the film supply position and detect the parallel state of the film. supply was being carried out.

For example, in the case of the film feeding apparatus shown in FIG. 1, reference numeral 1 denotes a film feeding apparatus, which is used in connection with an automatic film developing machine D. In the film feeding apparatus shown in FIG. 2 is the opening/closing lid, and X is already photographed with opening/closing lid 2 open.
The cassette 3 containing the wire film is set into the apparatus. When the cassette 3 has been set, the opening/closing lid 2 is closed and the cassette opening lever 4 is rotated.The cassette 3 is opened to the state of the cassette 3 and the cassette lid 3a, and the X-ray film F contained therein is removed by its own weight. It then falls and hits the feed roller 5 and stops. Immediately in front of the feeding roller 5, there are a plurality of film detection elements 6 in a row (often a combination of an infrared light emitting element 6a and a light receiving element 6b, with a detection mechanism therebetween depending on the presence or absence of a film). FIG. 2 shows the relationship between the fallen sheet film F, the feeding roller 5, and the detection elements 6 (61, 62, 63 in the figure). a
If the film F falls normally as shown in the figure, there is no problem, but if it falls diagonally as shown in figure b and is conveyed as it is by the rollers 5, the sheet film may be bent or caught during the subsequent conveyance process. It will happen.

Therefore, as shown in figure a, a plurality of detection elements 6
When all the rollers 1, 62, and 63 have detected the film, the feeding roller 5 starts to rotate.
Transport the film. As shown in FIG. 2b, when all the plurality of detection elements do not detect the film, the feeding roller 5 remains stopped, the sheet film F assumes the normal posture, and all the detection elements detect the film. Conveyance is started when the film is detected. The sheet film F that has passed the feeding roller 5 advances along a film guide 6, and when it passes a micro switch 7 for film detection, a data imprinting light source 8 momentarily emits light to illuminate data 9. Data are lens system 10 and surface reflector 1
Data is imprinted on one corner of the film F, which is passing through the guide 6 after passing through the guide 6. The sheet film F is conveyed to an automatic film developing machine D via rollers 12.

Next, manual feeding of the film feeder will be described. When you want to develop X-ray sheet films of different sizes, use manual feeding. Opening/closing lid 2 of supply device 1
Open it and set the guide plate 13. Guide plate 1
3 has a shape as shown in the perspective view of FIG. The upper surface 13a of the guide plate 13 is smooth, and has a raised surface 13b on one side. When the guide plate 13 is set in the film supply device 1, the upper surface 13 of the guide plate
a is an appropriate slope. When a sheet film F is placed on the upper surface 13a of the guide plate as a dark room, the sheet film F slides down due to its own weight, and when the film detection elements 6 detect all the films as described above, the feeding roller 5 rotates and the film is transported. It is expected to be done. However, when the film size is small, it is impossible to use all the detection elements 61, 6.
It is difficult and troublesome for 2... to perform film detection.

The present invention is a film feeding device having a structure in which, by setting the guide plate 13, at least one of the film detecting elements 61, 62, . . . is operated and the others are disabled.

In this invention, by installing a guide plate for manual feed, it automatically activates at least one of the film detection elements installed close to the supply roller and disables the others. It is possible to provide a film feeding device that eliminates the need for manual work, eliminates complexity, and is easy to operate.

FIG. 4 shows a perspective view of the guide plate when the guide portion 13 according to the present invention is set in the film feeding device 1. The guide plate 13 disables the film detecting elements 62, 63, and 64 shown in FIG. 3 (the same effect is obtained if a film is present), and only the detecting element 61 is in an operable state. Small size sheet film F
When inserting the film along the rising guide plate 13b, the film is detected by the detection element 61,
The feeding roller 5 begins to rotate, and the small-sized sheet film F is conveyed.

In the case of small-sized film, data imprinting is not necessary, so by setting the guide plate 13, the micro switch 14 installed in advance on the film supply device 1 is turned on, and the sheet film F passes through the micro switch 7. The data imprinting light source 8 does not emit light even when the data imprinting is performed. Also,
The guide plate 13 is provided with a protrusion 13d, so that the opening/closing lid 2 cannot be closed when the guide plate 13 is set.

Fig. 5 shows another embodiment, in which the sheet film F(A), F(B) to be conveyed
Film detection element 6 according to the width size A, B of
Set 1, 62, 63, and 64. A separate riser 13C is provided on the guide plate 13 so that operable film detection elements are located at both ends of the sheet film.
In the figure, if the detection element 64 is disabled (it has the same effect as the presence of film), small-sized sheet films can be accurately fed while checking the parallelism of the film as described above.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the film feeding device as seen from the side, FIG. 2 is a diagram showing the relationship between the film conveyance direction and the film detection element, and FIG. 3 is a perspective view of the film feeding device in which the guide plate is set. Fig. 4 is a perspective view of the guide plate according to the present invention set;
The figures are a plan view and a sectional view showing another embodiment of the present invention. 1...Film supply device, 2...Opening/closing lid, 3...
...Cassette, 5...Feeding roller, 6...Film detection element, 13...Guide plate, C...Cassette,
F... Sheet film.

Claims (1)

[Scope of utility model registration request] It has the function of opening the cassette in the device, taking out the film in the cassette, and inserting it into the developing machine, and also the function of enabling manual feeding by setting a guide plate in the device. In a film feeding device in which a plurality of film detection elements are arranged in a line just before the feeding roller in the device,
By setting the guide plate, the film feeding device disables at least one of the film detecting elements but disabling the others.