JPH0556497B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a film feeding device and a film leader for feeding film after photographing to a developing device.

[Background Art] A photographed film is stored in a cartridge, and it is necessary to pull it out from the cartridge and send it to a developing device.

For this reason, conventionally, one end of the film protrudes from the tip of the cartridge, a leader is attached to this tip, the leader is fed into the developing device, the leader pulls the film into the developing device, and the film is developed while being guided. A developing device is used. A driving means is provided within the developing device, and is configured to engage with a plurality of engagement openings formed in the leader to move the leader through the developing device.

In addition, by storing a large number of films in a cartridge with this leader attached in a magazine, having the leaders protrude from the magazine at regular intervals, and connecting this magazine to a developing device, the leader guides the films one by one to the developing device. An automatic feeding device has also been proposed (Japanese Patent Application No. 61-90382). According to this, a large number of films can be stored in a magazine,
Automatic film feeding is possible simply by setting the film in the developing device. A driving protrusion is provided in the magazine and enters the engagement opening of the leader to apply a driving force, thereby feeding the leader into the developing device.

However, when attaching leader-equipped films to this magazine, it is necessary to fit the leaders into the driving protrusions at predetermined intervals, make the leading ends of the leaders step-like, and supply them sequentially from the leading ends to the developing device. but,
Since the engagement openings of the leader have a small pitch between the openings, it is possible to accidentally load the leader with a different pitch.

In consideration of the above facts, the present invention provides a film feeding device and a film leader that can eliminate misalignment due to incorrect loading and ensure that the leaders are placed in the magazine at predetermined intervals even when a large number of leaders are set in the magazine. The purpose is to obtain.

[Summary and operation of the invention] The film feeding device according to the first invention of the present application includes a plurality of engaging openings and feeding openings having different shapes and pitches from the engaging openings for driving in the developing device. It is characterized by having a formed film guiding leader and a driving protrusion that fits into the feed opening of the film guiding leader and feeds the leader to the developing device.

For this reason, in the present invention, the feed opening is formed in the film guide leader at a different pitch from the conveying engagement opening in the developing device, and the feed opening is formed to engage with the driving protrusion in order to feed the leader into the developing device. The openings do not fit into the drive protrusions mistakenly for the transport engagement openings in the developing device, and the leader can be loaded accurately at each pitch of the transport openings.

By arranging the feed opening in the same line as the engagement opening, and making the width of the engagement opening and driving protrusion larger than the engagement opening, the mounting position of the leader can be reliably controlled despite the simple shape. can do.

The film reader according to the second invention of the present application includes:
Since the feed opening into which the driving protrusion fits is provided with a different pitch and shape from the engaging opening, the driving protrusion does not enter the engaging opening, and the leader can be reliably attached at the pitch of the feeding opening.

[Embodiment of the Invention] FIG. 1 shows a state in which a reader 10 according to this embodiment is attached to the tip of a film 14 protruding from a cartridge 12. As shown in FIG. The base end of the film 14 is locked to a core 12A in the cartridge 12. The leader 10 is made of a thin sheet material such as synthetic resin, and has a plurality of engagement openings 16 formed in rows at pitches P along its longitudinal direction.
Also, the third of these engagement openings 16 is the feed opening 1.
8. This feed opening 18 is the engagement opening 1
The width dimension is larger than that of 6. Therefore, the pitch between the feed openings 18 is (3×P).

An adhesive tape 20 is used to connect the film 14 and the leader 10.

FIG. 2 shows the reader 10 and film 14 housed in a magazine 24. As shown in FIG.
This magazine 24 is box-shaped, and has a lid 26 at its upper end that can be opened and closed, and when the magazine 24 is closed, the interior becomes light-shielded.

Inside the magazine 24, a pair of vertical walls 28, 30 are formed at the center in the width direction, extending over the entire length thereof. These vertical walls 28, 30 and magazine side walls 3
The spaces between the cartridges 2 and 34 serve as accommodation spaces for the cartridges 12, respectively.

An endless belt 36 is wound between the vertical walls 28 and 30, and drive protrusions 38 protruding from the outer periphery of the endless belt 36 at regular intervals engage with the feed opening 18 of the leader 10 to move the reader 10 into the magazine. 2
It is now possible to send out from 4.
The distance between these driving protrusions 38 is equal to the engagement opening 16.
This is three times the pitch of the feed apertures 18, which means that if the feed apertures 18 of a large number of leaders 10 are sequentially inserted into the drive protrusions 38, the distance between the drive protrusions 38 will be increased. One reader 10 will be attached. A large number of protrusions 36A protrude from the inside of the endless belt 36 at regular intervals, and these protrusions 36A engage with the sprocket foil 39.

The vertical walls 28 and 30 have upwardly U-shaped locking protrusions 4.
0 protrudes so that the end of the reader 10 can be inserted. The spacing between the locking protrusions 40 is the same as that between the feed opening 18 and the driving protrusion 38, and is used for positioning when the reader 10 is attached.

Therefore, as shown in FIG. 3, if a plurality of leaders 10 are respectively housed in the locking protrusions 40 and the engagement feed opening 18 is inserted into the drive protrusion 38, they will be spaced at regular intervals (pitch 3×p). Then, the reader 10 is placed on the vertical walls 28 and 30.

A rotating shaft 44 is attached to a sprocket wheel 39 around which a portion of the endless belt 36 is wound. The rotating shaft 44 has a pinion 46 fixed to its end and corresponds to a rack 48. This rack 48 is connected to a push rod 50. This push rod 50 is adapted to correspond with a drive lever 54 when the magazine 24 is connected to the developing device 52 as shown in FIG.

This drive lever 54 has one end supported by a pin 56, and is reciprocated by the rotation of a cam 58, thereby reciprocating the rack 48 and reciprocating the pinion 46 by a constant rotation. A one-way rotating clutch (not shown) is provided between the rotating shaft 44 and a sprocket wheel 39 around which the endless belt 36 is wound so that this reciprocating rotation acts as a fixed amount of feeding force in one direction on the endless belt 36. It is mediated.

The magazine 24 has an opening/closing lid 60 at one longitudinal end thereof.
is attached and is normally closed by the biasing force of the spring 62, but the cartridge 12 is not connected to the magazine 2.
When the magazine 24 is taken out from the magazine 24, the inside of the magazine 24 is opened.

As shown in FIG. 3, in the developing device 52, an endless belt 64 is wound around the leading end of the leader 10 that is fed into the developing device 52. This endless belt 64
includes an engagement opening 16 and a feed opening 1 of the leader 10.
Claws 66 as driving means capable of engaging with both of the two protrude at regular intervals. Therefore, leader 10
When the leader 10 is inserted into the developing device 52, the rotating endless belt 64 engages with the engagement opening 16 and the feed opening 18 by the claw 66, and the leader 10 is moved into the developing tank 68.
It is now possible to send it inside.

A movable plate 6 adjacent to this endless belt 64
9 is arranged for contact when the cartridge 12 is pulled out from the magazine 24 due to an increase in the tension of the film 14. This moving plate 69
is biased leftward in FIG. 3 by an elastic body biasing force (not shown), but when the cartridge 12 comes into contact with it and moves to the right, this is detected by the limit switch 70 and the cutter 72 moves the film 14. The end is cut off.

The film supplying operation using this embodiment will be explained.

As shown in FIG. 1, a plurality of leaders 10 connected to the film 14 by tapes 20 are prepared in advance, and these are attached to the magazine 24 at regular intervals of pitch (3×p). In this case, the end portions of the leader 10 should be brought into contact with the locking protrusion 40 sequentially starting from the frontmost portion (rightward in FIG. 3). If the reader 10 is attached at different intervals, this should be promptly detected and corrected. I can do it. As a result, the tip of the leader 10 protruding from the magazine 24 is staggered from the frontmost portion by pitches p.

Since the pitch of the feed opening 18 is larger than the pitch of the engagement opening 16, the drive protrusion 38 and the feed opening 1
It is possible to eliminate the problem of erroneous loading when the leaders 8 and 8 are provided at intervals of pitch p, that is, the problems in which the leaders 10 are attached to the endless belt 36 at intervals of pitch p or 2p.

If the distance between the locking protrusion 40 and the top surface of the standing wall 28 is set to a size that allows only one leader 10 to fit therein, it is possible to reliably prevent two leaders 10 from stacking up.

The magazine 24 with the lid 26 closed is transferred to the developing device 52.
When connected to the developing device 52, the drive lever 54 of the developing device 52 is reciprocated, and the endless belt 36 in the magazine 24 sends out all the leaders 10 by a fixed amount (pitch 3×P) toward the developing device 52. As a result, the endless belt 64 of the developing device 52 is connected to the leader 1 at the forefront.
The claw 66 engages the 0 into the engagement opening 16 and draws it into the developing device 52. As a result, the film 14 following the leader 10 is immersed into the developing tank 68, and the developing operation proceeds.

When all the films 14 in the frontmost cartridge 12 are pulled out, the tail of the film 14 is connected to the core 12A of the cartridge 12, so the cartridge 12 is pulled out of the magazine 24 by the tension of the film 14. As a result, the moving plate 69 moves, the limit switch 70 in the developing device 52 detects this, and the cutter 72 moves the film 1.
Cut off the end of 4. Therefore, the cartridge 12 naturally falls and is discharged.

Here, when the drive lever 54 rotates the pinion 46 again, the next leader 10 at the forefront is pushed out and guided to the developer tank 68 by the endless belt 64 in the developing device 52 as before.

In this way, all the films 14 are sequentially guided from the front reader 10 into the developing device 52 and are automatically developed.

[Effects of the Invention] As explained above, the film feeding device according to the present invention has a plurality of engaging openings and feeding openings having a different shape and pitch from the engaging openings for driving in the developing device. a film guiding leader; a driving protrusion that fits into the feed opening of the film guiding leader and feeds the leader to the developing device;
The film leader according to the present application is attached to the leading end of the film and guides the film in the developing device, and the film leader has an opening for engagement with a driving means in the developing device. A plurality of drive protrusions are formed, and a feed opening has a different pitch and shape from the engagement openings, and a drive protrusion for feeding the leader into the developing device is fitted into the drive opening. Since the protrusion is prevented from entering the engagement opening, an excellent effect is achieved in that the film guiding leader can be reliably fed into the developing device at regular intervals.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a reader to which the present invention is applied, FIG. 2 is a perspective view showing the reader attached to a magazine, and FIG. 3 is a perspective view showing the magazine connected to a developing device. FIG. 10... Leader, 12... Patrone, 14...
...film, 16...engaging opening, 18...feeding opening, 24...magazine, 52...developing device.

Claims (1)

[Scope of Claims] 1. A film guiding leader in which a plurality of engaging openings and feeding openings having different shapes and pitches from the engaging openings are formed for driving in a developing device, and this film guiding leader. a driving protrusion that fits into the feed opening and feeds the leader to the developing device;
A film feeding device having: 2 the feed opening is arranged in the same line as the engagement opening;
2. The film feeding device according to claim 1, wherein the width of the engagement opening and the driving protrusion are larger than the width of the engagement opening. 3. A film leader that is attached to the tip of the film and guides the film within the developing device,
This film leader is formed with a plurality of openings for engaging with the driving means in the developing device, and has a different pitch and shape from these engaging openings to feed the leader into the developing device. A film leader comprising a feeding opening into which a driving protrusion fits, so that the driving protrusion does not enter the engagement opening.