JPS6230025Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a cassette lid opening device that can insert a cassette from a small cassette to a large cassette by moving one cassette guide in parallel.

Generally, for example, an X-ray film cassette is
Cassettes of various sizes are used so that different sizes of film can be inserted, from half cut to eight cut. A cassette opening device for taking out films from cassettes of different sizes is known, and for this purpose the cassette guide for receiving the cassette and the cassette opening protrusion are made variable. One of the cassette guides is fixed, and the other cassette guide is variable, and the cassette guides are always pulled by a spring so as to fit the smallest cassette. The smallest cassette width is 6.5 inches, and the largest cassette width is 14 inches. Therefore, when the cassette is not inserted into the cassette guide, the width of the cassette guide is 6.5 inches. The commonly used cassette sizes range from half to six cuts, and it is not efficient to work if the cassette guide is always extended from 6.5 inches wide against the spring. This invention provides a cassette opening device that eliminates such inconveniences. Specifically, the cassette guide is provided with a cassette holding member as a stopper in the middle to fit the 10-inch width of the six-cut size. When the cassette is not inserted, the stopper will stop it so that it is 10 inches wide. Then, when inserting a cassette with a size of 8 cuts into the cassette guide, the stopper can be easily removed, and the cassette guide narrows to 6.5 inches in width due to the spring force. is expanded as usual, and after removing the cassette, the stopper automatically returns midway.
The film guide stops at 10 inches width.

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

In FIG. 1, in a plan view, reference numeral 1 indicates a cassette guide 1a pivotally attached to a fixed portion, and 2 a cassette guide 2a pivotably attached to a guide support 4 that moves in parallel along a fixed shaft 3. In FIG. (See Figure 2) A pin 5 is installed on the upper surface of the guide support 4, and a spring 6 is installed between the pin and the fixed part.
Stretch it. Accordingly, the guide support 4 is translated to the right in FIG. 1 along the fixed shaft 3, so that the cassette guide 2 is also moved accordingly. First, the cassette guide 2 is moved to the left against the spring 6, and the cassette 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 the lever 7 is pushed down from above, it rotates around the bearings 8, 8 (see FIG. 3), so that the cassette push-down members 9, 9, 9, which are integrated with the lever 7, push 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 is returned by the restoring force of a spring (not shown), and the film F slides along the lid and reaches the rollers 12, 12, as shown in FIG. The above is an explanation of how to take out a film using a known cassette lid opening device.

Returning to FIG. 1 again, when the cassette is removed, the guide support 4 holding the cassette guide 2 will be at the position of the minimum cassette size, with the pin 5 implanted in the support coming into contact with the stopper 12a under the tension of the spring 6. reach. A pin 5 is planted in the guide support 4 at a position corresponding to the medium-sized cassette between the smallest sized cassette and the largest sized cassette.
A cassette guide holding member 13 is provided as a stopper against which the cassette guide holding member 13 comes into contact. The holding member 13 is pivotally mounted 13a to a fixed portion, is tensioned by a spring 14, and abuts against a stopper 15. Reference numeral 16 denotes an operating lever, which is pivotally attached to a fixed portion 16a, and is connected to the cassette guide holding member 13 via a link 17. That is, when the operating lever 16 is rotated in the direction of arrow a, the cassette guide holding member 13 is rotated in the direction of arrow b and retreated from the passage of the pin 5. Therefore, a cassette guide holding member 13 is provided to normally stop the cassette guide 2 so that it is at a position corresponding to a medium-sized cassette. 1
The pin 5 can return to the position 2a.
In this state, even if the user releases the operating lever 16 and the cassette guide holding member 13 returns to the state shown in the figure, the pin 5 moves smoothly to the left, although there is resistance from the spring 14. As a result, since the pin 5 is stopped at the cassette guide holding member 13, the cassette guide 2 is always stopped at a position corresponding to a medium-sized cassette. Furthermore, a hole 4a is made in the upper surface of the guide support 4, and when the cassette guide 2 is moved to the left to the maximum (for example, 14 inches width), a pin is inserted into the hole 4a and the cassette guide 2
Provide a mechanism to prevent this from returning. Figure 4,
FIG. 5 shows the mechanism, and FIG. 4 shows a latch lock 21 having a pin 18 inserted into the hole 4a and an L-shaped groove (see FIG. 5) formed in the operating portion 19 and the cylinder 20. Attach it to the fixed part.
The pin 18 is held upward by a spring (not shown). When the operating portion 19 is locked at the apex of the right end of the L-shaped groove, the pin 18 remains in the hole 4a. And pin 18
To remove it from the hole 4a, it is sufficient to bring the operating part 19 to the upper left end of the L-shaped groove. In short, this idea is to make the cassette guide compatible with the width of medium-sized cassettes so that it is convenient for opening the lids of medium-sized or larger cassettes, such as the frequently used cassettes ranging in size from half to eight. Since a cassette guide holding member that stops at the position is provided, there is no need to manually spread the cassette guide against the spring from the minimum size position, and the minimum size cassette can also be used if necessary.Furthermore, a latch lock is provided. Therefore, the cassette guide can be locked at the position where the maximum width is obtained, so if, for example, the film inside a curved special cassette cannot be opened with this device, the latch lock can be activated to easily insert only the film between the rollers 12 and 12. In addition, in general, the cassette opening device is often directly connected to the film developing material, and therefore the roller 1 is
2 and 12 may become dirty due to scattering of the developer. For this purpose, a cleaning film having a width of 14 inches is passed through the rollers 12 in order to properly clean the rollers 12, 12. Then, the rollers are cleaned because dirt, developer, etc. on the rollers adhere to the cleaning film. Even in such cases, there is no need to hold the cassette guide by hand against the restoring force of the spring because there is a latch lock.

[Brief explanation of the drawing]

1 is a plan view, FIG. 2 is a front sectional view of the main part, FIG. 3 is a side view, and FIGS. 4 and 5 are views showing the latch lock. 1...Cassette guide pivoted to the fixed part, 2...
...Cassette guide pivoted to the guide support, 3...
Fixed shaft, 4... Guide support, 5... Pin, 6, 1
4... Spring, 13... Cassette guide holding member.

Claims (1)

[Scope of utility model registration request] One of the cassette guides on both sides of the cassette insertion stand is movable according to the width of the cassette, and the moving guide returns to the width of the minimum size of the cassette, and the guide is always set to the width of a medium-sized cassette by a holding member. A cassette lid opening device characterized in that the cassette lid opening device is configured such that the cassette lid is locked so that when a cassette of a different size is inserted, the holding member is released so that the cassette can be inserted.