JPH06347979A - Film supply device - Google Patents

Abstract

PURPOSE:To provide a film supply device where film carrying performance is improved by removing the curl habit of film. CONSTITUTION:A 1st feeding-in device 10, a 2nd feeding-in device 20 and a pressing device 30 are provided in a film transfer path led to a film developing part 2. When a 2nd detector PH2 provided on the film feeding-out side of the device 30 detects the leading edge of the film F, the device 30 is actuated to press the leading edge of the film F and heat it to remove the curl habit. By actuating the 1st and the 2nd devices 10 and 20, the film F is fed to the film developing part 2, and the feeding speed of the 2nd device 20 is made higher, thereby forming the loop on the film F between the 1st and the 2nd devices 10 and 20. When a 3rd detector PH3 provided on the film feeding-in side of the device 30 detects the trailing edge of the film F, the device 20 is stopped and while device 10 feeds the film F, the device 30 heats the trailing edge of the film F to remove the curl habit. The film is fed in the film developing part 2 in a state where the curl having is removed at the leading edge part and the trailing edge part of the film F.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film supply device for supplying a film to a film developing section.

[0002]

2. Description of the Related Art Some photographed films developed by a film developing device are stored in a cartridge for a long period of time. Such a film has a strong curl, and if it is subjected to development processing as it is, the film cannot be processed because the film is curled during transportation and is wound around the film feed roller provided in the development section or is jammed. There are cases.

Further, there is a risk that the film may be damaged by contact with a guide for guiding the movement of the film.

In order to suppress the occurrence of such troubles, the inventor has provided a heating device in the film conveying path leading to the film developing section, and has tried to heat the film by the heating device. As a result, the curl of the film was removed, and the transportability of the film could be improved.

[0005]

By the way, in the correction of the film by heating, since the film is moving at a constant speed, it is necessary to heat the film over the entire length to remove the curl, and the heating causes the film to move. The film emulsion may deteriorate and adversely affect the shooting screen.

The inventor further conducted a test, and if the leading end portion and the trailing end portion of the film had no photographing screen, and the leading end portion and the trailing end portion were partially heated to remove the curl, the photographing was performed. They have found that there is no effect on the screen and the film transportability can be improved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a film supply device capable of reliably transporting a film having a strong curl without causing trouble such as clogging in the film developing section.

[0008]

In order to solve the above-mentioned problems, according to the present invention, there is provided a film supply device for feeding a film to a film developing section, wherein the film is fed to a film transfer path leading to the film developing section. A first feeding device for feeding to the developing section, a second feeding device for feeding a film toward the first feeding device, and a fixed heating plate and a movable heating plate on the film feeding side of the second feeding device. And a press device for sandwiching the film, a first detection device and a second detection device for detecting the leading edge of the film on the film feeding side of the first feeding device and the pressing device, and a rear end of the film on the film feeding side of the pressing device. And a third detecting means for detecting the flow rate, and when the first detecting means detects the leading edge of the film, the fill of the second feeding device is detected. The feeding speed is made higher than the film feeding speed of the first feeding device, and the second feeding device is stopped when the second detecting means detects the leading edge of the film and when the third detecting means detects the trailing edge of the film. The configuration provided with the control means for operating the press machine was adopted.

[0009]

In the film feeding device having the above-mentioned structure, when the second detecting means detects the leading end of the film, the pressing device is operated to nip and heat the leading end of the film to remove the curl at the leading end of the film. .

The first feeding device and the second feeding device operate after pressing the film to feed the film toward the film developing section. When the first detecting means detects the leading edge of the film, the second feeding device feeds the film at high speed,
A loop is formed in the film with the first feeding device.

When the third detecting means detects the trailing edge of the film, the second feeding device is stopped and the pressing device holds the trailing edge of the film and heats it to remove the curl. At this time, since the loop portion of the film is fed to the film developing portion, the rear end portion of the film is in a stopped state.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a leader transport type film developing apparatus. This film developing device is provided with a film inserting section 1
And a film developing section 2.

The film insertion portion 1 has a lid 3 which can be opened and closed, and a cartridge holder 4 is provided inside. The cartridge holder 4 is slidably supported along a guide rod 5 extending long toward the film developing unit 2, and a spring 6 provided outside the guide rod 5 is a direction in which the cartridge holder 4 is separated from the film developing unit 2. Pressing towards.

A cartridge P, which is a film magazine in which the film F having been photographed is wound up, is attached to the cartridge holder 4. A leader L is connected to the leading end of the film F pulled out from the cartridge P. Film F
Is sent to the film developing section 2 by the leader L.

Although not shown in the figure, the film developing section 2 is provided with a plurality of processing tanks filled with various kinds of developing processing solutions, and a rack 7 is suspended in each processing tank. The rack 7 has a sprocket 8 for carrying a leader, and the rotation of the sprocket 8 causes the leader L to be carried in one direction.

A first feeding device 10 for feeding the leader L and the film F to the film developing portion 2 and a second feeding device 10 for feeding the leader L and the film F to the first feeding device 10 are provided in the film transfer path in the film insertion portion 1. The feeding device 20 and the pressing device 30 for pressing the film F on the leader feeding side of the second feeding device 20.
And a cutter device 40 for cutting the film F on the leader feeding side of the press device 30.

The first feeding device 10 comprises a pair of upper and lower feeding rollers 11 and 12, and the lower feeding roller 12 is rotated by a motor (not shown).

The second feeding device 20, like the first feeding device 10, has a pair of upper and lower feed rollers 21, 22.
The lower feed roller 22 is rotated by a motor (not shown).

A pair of upper and lower film guides 50 and 51 are provided between the first feeding device 10 and the second feeding device 20. The lower film guide 51 is swung downward around a pin 52 provided at one end. Below the film guides 50 and 51, the loop stocker 5 is provided.
3 is provided.

The press device 30 has a pair of heating plates 31 and 32 arranged one above the other, and each heating plate 31 and 32 is a heater 3.
It is heated to a predetermined temperature by 3. The lower heating platen 32 is a fixed arrangement, while the upper heating platen 31 is the solenoid 3
It is elastically supported by a support plate 35 which is moved up and down by means of a spring 36 through a spring 36. The upper heating plate 31 moves up and down by the operation of the solenoid 34, and when descending, elastically clamps the film F with the lower heating plate 32.

A first detector PH ₁ and a second detector PH ₂ for detecting the rear end of the reader L are provided on the film feeding side of the first feeding device 10 and the second feeding device 20.

Further, in the transfer path of the cartridge holder 4,
A third detector PH ₃ for detecting the detection piece 4 a provided on the lower surface of the cartridge holder 4 is provided.

The film feeding apparatus shown in the embodiment has the above-mentioned structure, the cartridge P is set in the cartridge holder 4, and the leader L to which the leading end of the film F is connected is connected to the pair of feeding rollers 21 of the second feeding device 20. When inserted between the two, the leader L is conveyed toward the first feeding device 10 by the operation of the second feeding device 20, and is conveyed toward the film developing section 2 by the operation of the first feeding device 10. . By the movement of the leader L, the film F is pulled out from the cartridge P.

The rear end of the leader L has been transported to the position of the second detector PH _2, when the second detector PH ₂ detects the rear end of the leader L, the first infeed device 10 and a second infeed device 20 Stop.

At this time, the front end of the film F faces the position of the pressing device 30, and the front end of the leader L is not engaged with the first sprocket 8 of the rack 7.

When the first feeding device 10 and the second feeding device 20 are stopped, the heating plate 3 above the pressing device 30 is stopped.
1, the leading end of the film F is elastically sandwiched between the lower heating plate 32 and the lower heating plate 32 and is heated as shown in FIG. The heating removes the curl at the leading end of the film F.

When a set time elapses after the pressing device 30 starts to nip and heat the film F, the upper heating plate 31 rises, and at the same time, the first feeding device 10 and the second feeding device 20 operate to move the leader L. It is conveyed to the film developing section 2. When the leader L is engaged with the sprocket 8 of the rack 7, the leader L is transported by the rotation of the sprocket 8, and the moving speed thereof is equal to the feeding speed at which the first feeding device 10 and the second feeding device 20 feed the leader L.

When the rear end of the leader L moves to the position of the first detector PH ₁ , and the first detector PH ₁ detects the rear end of the leader L, the lower film guide 51 swings downward, The second feeding device 20 moves the film F toward the first feeding device 10 at a speed higher than the feeding speed at which the first feeding device 10 feeds the film F.

The film F forms a loop A in the loop stocker 53 as shown in FIG. 3 due to the difference in the feeding speed between the first feeding device 10 and the second feeding device 20.

When the rear end of the film F is pulled out from the cartridge P, the rear end of the film F is fixed to the spool of the cartridge P, so that the cartridge holder 4 moves the film F by the tension acting on the film F. Pulled in the direction.

The moving detecting piece 4a of the cartridge holder 4 to the position of the third detector PH _3, when the third detector PH ₃ detects the detection piece 4a, the second infeed device 20 stops, simultaneously press apparatus The hot platen 31 on the upper part of 30 lowers to clamp the rear end of the film F and heat it. Further, the cutter device 40 operates to cut the rear end portion of the film F (see FIG. 4).

At this time, the first feeding device 10 is in the state of feeding the film F, and the portion of the film F forming the loop L in the loop stocker 53 is fed to the film developing section 2 by the second feeding device 10. Therefore, the feeding force does not act on the rear end portion of the film F.

Therefore, the rear end of the film F is heated in a stationary state, and the curl is removed by the heating.

When the rear end of the film F is nipped and heated for a predetermined time, the upper heating plate 31 rises, and at the same time, the second feeding device 20 is operated to operate the film at a speed equal to the film feeding speed of the first feeding device 10. Carry F.

When the cutter device 40 cuts the film F, the cartridge holder 4 moves backward by the action of the spring 6.

By heating the leading end portion and the trailing end portion of the film F to remove the curl, the film F does not curl, the transportability of the film F is improved, and troubles such as clogging occur. Occurrence can be prevented in advance.

In the case of the embodiment, the film supply of the leader transport type film developing device has been described as an example, but the invention can be applied to the film supply of the leaderless film developing device. In this case, the leading edge of the film F is detected by the first detector PH ₁ and the second detector PH ₂ ,
Based on the detection, the operations of the first feeding device 10, the second feeding device 20, and the pressing device 30 are controlled in the same manner as described above.

When the film refilled in the film magazine is supplied, the trailing end of the film is in a free state. In this case, therefore, the third detector PH ₃ is provided in the film transfer path and the rear end of the film F is removed. The end is detected, and the second feeding device 20 and the pressing device 30 are detected based on the detection.
Control the behavior of.

[0040]

As described above, in the film feeding apparatus according to the present invention, the film is stopped at the position where the leading end portion and the trailing end portion of the film face the pressing device, and the pressing device is operated when the film is stopped. Sandwich the film,
Moreover, since the film is heated, it is possible to remove the curl around only the leading end portion and the trailing end portion of the film. It is possible to prevent the film from curling due to the removal of the curl, improve the transportability of the film, and prevent troubles such as clogging of the film.

Further, since the rear end portion of the film is held in a stopped state in a state where a loop is formed in the film between the first feeding device and the second feeding device, and the film is heated by the pressing device, It is not necessary to stop the entire film at the time of heating the trailing edge portion, and it is possible to suppress a decrease in the film development processing capacity.

Further, since there is no photographic screen at the leading end and the trailing end of the film for removing the curl, the photographed image is not affected even if the emulsion in that part is altered during heating, and the deterioration of print quality is suppressed. can do.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a film supply device according to the present invention.

FIG. 2 is a cross-sectional view showing a pressed state of the leading end portion of the film.

FIG. 3 is a sectional view showing a loop forming state of the film.

FIG. 4 is a cross-sectional view showing a pressed state of the rear end portion of the film.

[Explanation of symbols]

1 Film Insertion Part 10 1st Feeding Device 20 2nd Feeding Device 30 Pressing Device PH ₁ 1st Detector PH ₂ 2nd Detector PH ₃ 3rd Detector

Claims (1)

[Claims] 1. A film supply device for feeding a film to a film developing unit, wherein the film is fed to a film developing unit in a film transfer path to the film developing unit.
A feeding device, a second feeding device that conveys a film toward the first feeding device, and a pressing device that holds a film between a fixed heating platen and a movable heating platen on the film feeding side of the second feeding device. And a first detecting device and a second detecting device for detecting the leading edge of the film on the film feeding side of the first feeding device and the pressing device, and a third detecting means for detecting the rear end of the film on the film feeding side of the pressing device. Means is provided, and when the first detecting means detects the leading edge of the film, the film feeding speed of the second feeding device is made faster than the film feeding speed of the first feeding means, and the second detecting means detects the leading edge of the film. And a control means for stopping the second feeding device and operating the pressing device when the third detecting means detects the trailing edge of the film. Comprising Te film feeding device.