JPS5849934A - Photographic device - Google Patents

Abstract

PURPOSE:To send out surely a film from a photogaphing part without slip to accommodate it in a receive magazine, by providing sharp-pointed members on a part of the outside circumference of a photographed sheet film carrying roller. CONSTITUTION:Short needles 31-31'' are blocked on a part of the outside circumference of a sheet film carrying roller 30 to which rubber is printed, and the ratio of the rotation number of a shaft 26, to which the roller 30 is attached, to the rotation number of a cam shaft 22 which drives a stopper 27 for film and a scraping-out roller 32 is set to an integer, and the position of the start of contacting of the needle 31 is made constant. When photography is terminated, the stopper 27 is pressed downward by the rotation of a cam 29, and the roller 32 is moved downward, and needles 31-31'' bite into a photographed film, and the film is accommodated surely in a receive magazine without causing the slip between the film and the roller 30 at all.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording system for recording on a sheet-backed recording carrier and transporting the recording carrier.

It is particularly suitable for the Xi photographing apparatus, in which unphotographed sheet film transported between intensifying screens constituting a recording photographing section is transported to a receive magazine after photographing. First, the conventional technology will be explained using FIGS. 1 to 4. FIG. 1 shows a typical X-ray direct imaging film changer. 1 is a film changer body, 2 is a supply magazine that stores unshot sheet film 3, 4 is a film outlet of the supply magazine, 5 is a receive magazine that stores exposed sheet film 6, and 7 is a film storage opening of the receive magazine. , 8 to 12 are rollers for feeding the sheet film, 13 and 14 are guide plates for guiding the 7-film, and 15a and 15b are intensifying screens constituting the photographing section. In FIG. 1, the unphotographed sheet film 3 stored in the supply magazine 2 is moved back one by one through the film ejection port 4 by a mechanism (not shown) to a roller 8 which rotates in the direction of the arrow, and is narrowed between a forest and placed on an intensifying screen. It is sent between 15a and 15b. By a mechanism not shown, the intensifying screens 15a and 15b are brought into close contact with the fed sheet film 3', and photographing is performed here. After shooting, intensifying screen lba, 15
b releases the close contact, and the photographed sheet film passes through the film storage chamber 7 and is stored in the receive magazine 5 by the rotation of rollers 0, 11, and 12.

Here, the present invention will be described in detail after pointing out the problems of the prior art regarding the part of the present invention in which the photographed sheet film is sent out from the photographing section using the detailed drawings of FIGS. 2 to 4.

2 and 3 are a side view and a sectional view of the unphotographed sheet film being sent from the supply magazine to the photographing section, and FIG. 4 is a cross-sectional view of FIG. 3.

In FIG. 2, a scraping row 219 is rotatably supported via a shaft 18 on a scraping lever 17 which is swingable about a fulcrum shaft 16, while a scraping lever 17 is rotatably supported through a shaft 18.
A roller 21 is rotatably attached to a shaft 20 fixed to the camshaft 7, and a tension spring 24 is attached so that the roller 21 comes into contact with a scraping cam 23 fixed to a camshaft 22.
is attached. And the roller 21 scrapes out the cam 23
Because it is riding on the 0 mountain part, the scraping low 219
2 to 4 show a state in which the sheet film is not in contact with the sheet film feeding roller 25.

In FIG. 3, 25 is a sheet film conveyance roller with a baked rubber (shaded area) fixed to a shaft 26, and 027, which rotates in the direction of the arrow, is a film stopper that can swing around the shaft 28. , a stopper cam 29 fixed to the camshaft 22. and spring (not shown)
It swings in the direction of the arrow.

However, the sheet film feeding roller 25. It is assumed that the scraping roller 9t and its associated cams, levers, etc. are provided on both sides of the sheet film.

Figure 3 shows the folding motion of the conventional device configured as described above.
With the close contact of b being released, the unphotographed sheet film 3' sent from the supply magazine between the intensifying screens y 15a * 15b hits the film stopper 27 and stops. At this time, as described above, the scraping roller 9 Due to the action of the scraping cam 230, it does not come into contact with the gII feed roller 25. In this state, the intensifying screen 15b is pushed upward in the snoring diagram by a mechanism not shown, and the unphotographed sheet film 3' is brought into close contact with the intensifying screen 15a, and photographing is performed.

After photographing is completed, the film stopper 27 is first lowered in the direction of the arrow in FIG. 3 by rotation of the strapper cam by 2%, and at the same time the intensifying screen 15b is also pushed downward to release the close contact.

Next, when the roller 21 begins to descend to the valley of the scraping cam 23 due to the rotation of the scraping cam 23 in the direction of the arrow in FIG. 2, the scraping roller 19 also descends in the direction of the arrow in FIG. 3 due to the pressing force of the tension spring 24. At the beginning, the photographed sheet film is finally sandwiched between the transport row 225 which is already rotating in the direction of the arrow, and the sheet film is sent out from the photographing section and stored in the receive magazine.

As for the performance of the device described above, it is necessary to reliably feed out the photographed sheet film from the Jll Gunbe, but there are cases where it is not fed out from the shooting section or is not completely stored in the receive magazine because it is fed out diagonally. The causes of trouble are: (1) The sheet film sticks to the intensifying screen because the sheet film is placed in close contact with the intensifying screen1, (2) Electrostatic adsorption in humid or dry conditions. The force causes the sheet film to stick to the intensifying screen.

(8) The surface of the rubber baked into the conveyance roller becomes prone to slipping as it ages.

etc. are possible. Particularly in a device that feeds a sheet film at a speed of several meters per second, if even a slight slip occurs between the sheet film and the conveyance roller due to the above reasons, the sheet will be fed diagonally, which is likely to cause trouble.

Possible countermeasures include increasing the pressing force of the scraping roller 19 against the feeding roller 25 and using rubber with strong frictional force, but these cannot be said to be perfect in terms of the durability of the rubber.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems, and to ensure that the sheet film fed between the intensifying screens can be reliably fed out of the photographing section without slipping after photographing. It is to store it in.

Hereinafter, one embodiment will be described with reference to the drawings.

Figure 5 is a sectional view showing the mechanism for feeding sheet film from the photographing section, and Figure 6 is a cross-sectional view of Figure 5. Components with the same functions as in Figures 2 to 4 are designated by the same reference numerals. It is a representation.

In Fig. 6, 30 is a sheet film conveying roller on which rubber (shaded area) is baked, and the rubber area has three short hands 31 to 31'' shown by broken lines in a row and in a very short range around the entire circumference. The tip of the needle 31 etc. protrudes from the rubber surface into the sheet film - the autumn equinox.
As shown in the figure, the scraping roller 32 includes a conveying roller 3.
A groove 32a is provided in the part facing the needle 31 etc. implanted in the roller 0, so that the tip of the needle is protected.Although not shown, the driven roller 33 is also provided with a similar damage. It is being

In this embodiment configured as described above, the needles 31 and the like implanted in the symmetrical conveying rollers 30 are placed in symmetrical positions so that the left and right sides can be synchronized.
The ratio of the rotational speeds of the shaft 26 to which the camshaft 230 is attached and the camshaft 22 is an integral multiple. This is due to the action of the scraping cam 23 mentioned above, which causes the scraping roller 32 to move downward in the figure. This is to keep the timing at which the needle 31 starts hitting the sheet film constant at all times when the photographed sheet film is inserted between the transport row 230 and sent out.

In addition, if the number of needles is reduced as in this embodiment and the needles are used only for the load of the rise when scraping out the photographed sheet film, the influence of the needle hole on one film will be small, and the influence of the needle hole on one film will be small. The scratches don't bother me.

In addition, although we have shown an example in which a conveyor roller with needles embedded in it is used to feed photographed sheet film from the photographing section, when conveying unphotographed sheet film from the supply magazine to the photographing department, the intensifying screen If the conveying roller according to this embodiment is used when the sheet film is difficult to enter due to resistance, it is possible to reliably feed the sheet film between the intensifying screens.

As explained above, according to the present invention, the needle embedded in the film conveying roller that feeds out the photographed sheet film from the photographing section bites into the sheet film - the autumnal equinox, and the iron nail presses against the photographed sheet film. Since the starting timing is always constant, the sheet film can be reliably fed from the photographing section to the receive magazine without causing any slip between the sheet film and the conveying roller. In particular, the effect is great if a sheet film example is used.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a film changer for direct X-ray imaging, FIG. 2 is a side view showing a conventional technique, FIG. 3 is a sectional view thereof, and FIG. 4 is a cross sectional view of FIG. 3. FIG. 5 is a cross-sectional view showing the embodiment, and FIG. 6 is a cross-sectional view thereof. In the figure, 1 is a film changer body, 2 is a supply magazine, 3 is unshot sheet film, 4 is a film ejection opening, 5 is a receive magazine, 6 is a sheet film that has been shot, 7 is a film storage opening, 8 - 12 is a roller, 13
and 14 are guide plates, 15a and 15b are intensifying screens, 16 is a fulcrum shaft, 17 is a scraping lever, 18 is a shaft, 19 is a scraping roller, 20 is a shaft, 21 is a roller, 2
2 is a cam shaft, 23 is a scraping cam, 24 is a tension spring, 2
5it sheet film transport roller, 26 is the shaft, 27 is the film stopper, 2Btri shaft, 29 is the stopper.
cam, 30 is a sheet film transport roller, 31 is a needle, 3
2 is a scraping roller, and 33 is a driven roller. And... Senjidai? ZoQ -------7

Claims (1)

[Scope of Claims] (1) In a photographing device that includes a photographing section where photographing is carried out, a sheet film is carried into the photographing section and taken out after photographing, the means for conveying the sheet film is located on its working surface. A photographing device characterized in that a portion thereof includes a sharp member. (2) The means according to claim (1), wherein the means includes a first roller and a second row 2 in contact with the first roller, and the sharp member is a needle implanted in the first roller. Photography equipment. (8) The photographing device according to claim (1), wherein the outer peripheral surface of the first roller is formed of a material with high frictional resistance. (4) @The means includes a sharp member in a short range of the outer periphery,
The photographing apparatus according to claim (1), wherein the sharp member waits at substantially the same position when the sheet film is carried out from the photographing section. (5) The photographing device according to claim (1), wherein the palpitation section includes an intensifying screen.