JPS6111726Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a long photosensitive material developing processing device (hereinafter referred to as a "processor"). The present invention relates to a processor that can be easily recovered from a failure while keeping the limit to a minimum.

Development processing of long photosensitive materials or relatively short photosensitive materials that are made into long photosensitive materials by joining them together is as follows:
This is performed by a processor such as that shown in FIG. Figure 1 shows a processor for developing a long color photosensitive material. 1 is a film delivery section, 2 is a front chamber, and 3, 4, 5, 6, 7, 8, and 9 are color developing parts, respectively. , bleaching, first washing, fixing, second
Washing, stabilization, and drying processing sections, 19 and 20 are film transfer reel rows, 21 is a drive roller provided below the upper reel row 19 and rotates at a faster speed than the web moving speed, and 10 is a film winding roller. Department. A film cutting detection mechanism 11 is provided within the front chamber 2 . As the film tension increases, the upper reel row 19 comes into contact with a drive roller spaced apart by an interaxial distance l, and controls the film tension to remain constant. The film transport speed is controlled to be constant by the rotational speed of a film transport speed regulating roller (hereinafter referred to as "pacer roller") 22. Film cut detection mechanism 1
1, as shown in FIG. 2, two permanent magnets 13,
Film transport detection roller 1 with embedded 13'
2, a reed switch 14, and a detection circuit (not shown) for detecting that the roller 12 is not rotating normally based on pulses sent from the reed switch 14. In a processor equipped with such a film cut detection mechanism 11, when the film being processed is cut, the film behind the cut point (referring to the feeding section side) is not transferred, so the rotation detection mechanism does not transfer the film. It was possible to detect this and issue a film cutting alarm, or at the same time as issuing the alarm, cut off the power to the motor and stop film transport. In the case of a processor that issues an alarm, it is necessary for the operator to detect the alarm and stop the processor. In such a processor, the above-mentioned processing can prevent further damage to the film, but the following problems occur. In other words, even if the operator checks the cut point of the film and tries to pull the film in order to splice it there, he cannot pull it easily because the processor is stopped. The only option was to pull the film by hand during each processing step and feed it little by little. This is a very labor-intensive job, and the operator comes into contact with various processing solutions, which is also not desirable.

The present invention aims to eliminate the above-mentioned drawbacks of conventional processors. The purpose of the present invention is to provide a plurality of drive rollers and a peripheral speed slower than the drive rollers, in which a transfer force acts on the film suspended in the transfer path when it is in a tensioned state, and no transfer force acts on it when it is in a relaxed state. In a developing processing apparatus that applies a transporting force to a long film by a rotating film transporting speed regulating roller on the side where the film is transported, a film cutting detection mechanism is provided, and a film cutting detection mechanism is provided. This is achieved by providing means for stopping the film transport speed regulating roller without stopping the drive roller when the mechanism outputs an output indicating that the film has been cut. Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 3 is a side view of the main parts of the present invention, in which the pacer roller 22 is driven by a shaft 2 driven by a chain 23.
A clutch 24 is interposed between the film and the film 2a, and this clutch 24 is always connected and is configured to be released by a film cutting signal (the photographic processing structure of the processor is the same as the conventional one, so it is not shown in the figure). It has not been).

In this embodiment, all drive rollers 21 and pacer rollers 22 are normally driven by a motor M, and the film can be transported at a constant speed and with a constant tension to perform the developing process, and in the unlikely event that the film breaks down, If this occurs, it is detected by the film cut detection mechanism, and a film cut alarm is issued, and the pacer roller 2
The drive of the pacer roller can be stopped by opening a clutch 24 provided in the second drive system. Since the tension of the film decreases when the film is cut, even if the drive roller 21 continues to be driven, it is not affected by the action and stops at the point where it was cut.
No further damage will be sustained. When the operator receives the alarm and splices the film after checking the cut point of the film and taking measures to eliminate the cause of the cut if necessary, the operator should move the film that is behind the cut point (referring to the feeding section side) to the front ( When the film is pulled toward the winding section side), the tension of the film increases, so the plurality of rollers 19 come into pressure contact with the drive roller 21, the film is driven, and the film can be easily pulled in the winding direction and attached to the stand. . Once the film has been loaded, the clutch 24 of the pacer roller 22 can be connected to resume film processing.

In addition to using the clutch described above, the pacer roller can be stopped by using a method separate from the main drive motor.
A dedicated motor for driving the pacer roller may be provided, and only this motor dedicated to the pacer roller may be stopped in response to a film cutting signal.

In addition to the reed switch described above, photoelectric methods, mechanical methods, etc. can be used to detect rotation in the film cut detection device. Furthermore, the mounting position and number of rollers for detecting film cutting on the processor can be selected from a wide range.

As mentioned above, in this invention, even if the pacer roller stops, the drive roller does not stop, so by simply pulling the leading edge of the film at the cut position to make the following film taut, the drive roller can be removed from the drive roller. A transporting force is applied to the film and the film is fed out, resulting in the operational effect that the cut portion of the film can be easily restored in a short period of time. Therefore, this has the practical effect of preventing deterioration in processing quality and damage to the film.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional processor, FIG. 2 is a perspective view of a film cut detection mechanism, and FIG. 3 is a side view of the processor showing essential parts of the present invention. 1...Film feeding section, 2...Pre-processing chamber, 3
~9...Processing section, 10...Film winding section, 11
...Film cut detection mechanism, 12...Film transfer detection roller, 13...Hiku magnet, 14...Reed switch, 21...Drive roller, 22...
Pacer roller, 24...Clutch.

Claims (1)

[Scope of utility model registration request] When the film suspended in the transport path is in a tensioned state, a transporting force is applied, and when it is in a relaxed state, the transporting force is not applied. In a developing processing apparatus that applies a transporting force to a long film by a film transporting speed regulating roller on the forward side, a film cutting detection mechanism is provided, and the film cutting is detected by the film cutting detector. 1. A photosensitive material developing and processing apparatus, comprising means for stopping said film transport speed regulating roller without stopping said driving roller when an output of said film is received.