JPS6230026Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film feeding device for opening an X-ray photography cassette in a bright room, taking out a photographic film, and inserting it into an automatic film developing machine.

This film supply device has a mechanism for opening a cassette inside, and can be used in combination with a compatible cassette. However, in general, special curved cassettes are sometimes used for X-ray photography, and the
It often happens that line films must be processed in automatic processors. Each time, the device was disconnected from the automatic processor and the film was inserted directly into the automatic processor by hand in the darkroom.
It becomes extremely difficult to use. The present invention is designed so that in such a case, instead of opening the lid of the device and inserting a cassette, the device can be turned into a dark room and only the film can be manually loaded and sent to the automatic developing machine.
When inserting the film by hand, it is necessary to attach an insertion guide plate to prevent malfunctions such as transportation failure or damage to the film when the film is inserted crooked. Further, after manually inserting the film using the insertion guide plate, the insertion guide plate must be removed when processing the film with a cassette.
The reason for this is that when the cassette is opened, the lid hits the insertion guide plate, which prevents the cassette lid from opening sufficiently, which makes it difficult to take out the film, and the cassette and insertion guide plate hit each other. This is because if both are scratched, especially the insertion guide plate, the next time the film is inserted using the insertion guide plate, the film will be damaged.

The purpose of this invention is to make it impossible to operate the cassette even if you forget to remove the insertion guide plate and try to process the film from the cassette. We have devised a film feeding device featuring a mechanism that makes this impossible.

A detailed explanation will be given below based on the drawings.

Fig. 1 is a plan view mainly showing the cassette-related parts of the film feeding device according to the present invention, Fig. 2 is a cross-sectional view of the cassette-related parts (partially), and Fig. 3 is a side view mainly showing the cassette and manual feed-related parts. FIG. 4 is a perspective view of the insertion guide plate of the present invention, and FIG. 5 is an electric circuit diagram related to the present invention. In FIG. 1, S is a film supply device, C is a cassette, 1 is a cassette guide pivoted to a fixed part 1a, and 2 is pivoted to a guide support 4 that moves in parallel along a fixed shaft 3.
This is a cassette guide. (See FIG. 2) A pin 5 is installed on the upper surface of the guide support 4, and a spring 6 is stretched between the pin and the fixed portion. Therefore,
Since the guide support 4 is translated to the right in FIG. 1 along the fixed shaft 3, the cassette guide 2 is also moved accordingly. First, cassette guide 2
is moved to the left against the spring 6, and the cassette C is inserted between the cassette guides 1 and 2 along the tapered portion 2b at the tip. FIG. 1 shows the state in which the largest size cassette has been inserted.
Next, when lever 7 is pushed down from top to bottom, bearing 8,
Lever 7 to rotate around 8 (see Figure 3)
The cassette pressing members 9, 9, 9, which are integral with the cassette, press down the cassette. Therefore, the cassette guides 1 and 2 rotate around 1a and 2a. The lid of the cassette comes into contact with the cassette lid opening projection 10 attached to the fixed part and the cassette lid opening projection 11 attached to the guide support 4 to open the cassette. The lever 7 returns due to the restoring force of a spring (not shown), and the film F slides along the lid onto the roller 12,
Reach 12.

The rollers 12, 12 are given rotational force,
Film F is conveyed to automatic developing machine D.

FIG. 4 is a perspective view of the insertion guide plate 13. When using this, the cassette guide 2 is fully expanded and set between the cassette guides 1 and 2 as shown in FIG. The insertion guide plate 13 has a surface 13a for slidingly inserting the film.
A wall 13 rising at a right angle to the right side of the surface 13a
b, and insert the film into this guide plate 13.
When inserting the film using the , place the film F on the surface 13a, push the film toward the automatic processor while pressing the right end of the film against the wall 13b, and let the leading edge of the film catch the roller 12. The film is conveyed by rollers 12 and inserted into an automatic developing machine. Since the film F is inserted along this wall 13a, the film is inserted straight into the roller 12 and the automatic developing machine D, and no transport failure occurs.

If you forget to remove this insertion guide plate and try to process the film from the cassette, when the cassette lid is opened, the tip 14 of the lid will hit the insertion guide plate and cause scratches on the guide plate. I'll give it away. Therefore, instead of the operator noticing that he or she has forgotten to remove the insertion guide plate only after opening the cassette and the film comes out, the operator can do so by not opening the cassette.

To explain an example, insertion guide plate 1
The opening/closing detector 17 of the light-shielding lid 16 is provided with a circuit as shown in FIG.
When the circuit is open, the contacts are closed as shown in the circuit shown in Figure 5. One end of the resistor R1 is connected to the power supply Vcc,
The other end is connected to gate G and detector 17.

When the light-shielding lid 16 is open, that is, in the state shown in FIG. 5, the current flows through R1 to the light-shielding lid detector 17.
The input to gate G becomes 0. Light-shielding lid 16
When the gate G is closed, the contact of the detector 17 is opened and the gate G is closed.
Voltage Vcc is applied to the input of , and the input signal becomes 1.
Here, the detector 18 of the insertion guide plate is connected in parallel with the detector 17. FIG. 5 shows a state in which the insertion guide plate is not inserted. When the insertion guide plate is inserted, the contact of the detector 18 is closed, and the input to the gate G becomes 0 regardless of the state of the light-shielding lid opening/closing detector 17. In this state, the cassette C cannot be opened. Keep it. For example, a lever 19 is provided below the cassette push-down member 9, and the lever 19
One end is connected to the operating shaft 22 of a push-pull solenoid 21 through a shaft 20, and when the push-pull solenoid 21 is excited, the lever 19 rotates about the shaft 23 against the spring 24, opening the cassette lid. However, if there is no input signal from the gate G, the push-pull solenoid 21 will not be energized, and the cassette will be opened. The movement of the push-down member 9 is blocked, making it impossible to open the cassette lid. In this way, the insertion guide plate 1
Even if you forget to remove 3 and try to process the film from the cassette, opening of the cassette can be prevented. In yet another embodiment, a portion 13c of the guide plate 13 is extended to prevent the light shielding lid 16 from being closed when the insertion guide plate 13 is set in the apparatus as shown in FIG. Lid 1
6 is not closed, the purpose can also be achieved by making it impossible to open the cassette lid. Also,
When the insertion guide plate 13 is set in the device, if the width A of the insertion guide plate is set so that the distance between cassette guides 1 and 2 is larger than the maximum width of the cassette, it will be easier to forget to remove the insertion guide plate 13. Even if an attempt is made to insert the cassette into the guides 1 and 2, the cassette will not rest on the guides 1 and 2, making it impossible to open the cassette, and the objective can be achieved as in the previous embodiment.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the film feeding device according to the present invention, FIG. 2 is a cross-sectional view of the cassette-related portion, and FIG.
FIG. 4 is a sectional view of the film feeding device according to the present invention as seen from the side, FIG. 4 is a perspective view of the insertion guide plate of the present invention, and FIG. 5 is an electric circuit diagram. S...Film supply device, C...Cassette, D
...Automatic developing machine, F...Film, 1, 2...Cassette guide, 13...Insertion guide plate, 17,
18...Detector.

Claims (1)

[Scope of utility model registration request] A means for opening the cassette in the apparatus, taking out the film in the cassette, and feeding the film to the developing machine, and a guide plate for transporting the sheet film manually inserted into the apparatus, A film feeding device characterized by having a mechanism that makes it impossible to open a cassette when a manual feed guide plate is activated.