JPH0580482A - Photosensitive material guiding structure for automatic developing machine - Google Patents

Abstract

PURPOSE:To protect the intermediate part of a photosensitive material consecutively sent out from a develop-processing tank even if clogging occurs in the vicinity of the leading edge part of a longer photosensitive material in a dryer part, and simultaneously, to prevent a failure that a fault occurs by the clogging of the intermediate part of the photosensitive material on each part of an automatic developing machine. CONSTITUTION:A turning/guiding plate 54 is provided on a crossover rack part between the processing tank of the automatic developing machine 10 and the dryer part 34. The turning/guiding plate 54 normally serves as a carrying guide for a photographic paper P, but when the clogging of the leading edge part of the photographic paper P occurs, in the dryer part 34, the plate 54 is turned with the bending pressure of a bending part, generated on the intermediate part, and houses the bending part in a housing space 62 among each processing tank and a light shielding cover. Thus, a big clogging accident can be prevented, and simultaneously, the photographic paper P is protected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive material guide structure for guiding a photosensitive material, which is used in an automatic developing machine for developing a photosensitive material, and particularly when the photosensitive material is blocked on the downstream side of conveyance of the photosensitive material. The present invention relates to a guide structure for guiding an intermediate bent portion.

[0002]

2. Description of the Related Art An automatic developing machine is provided with a series of development processing tanks, into which photosensitive materials are sequentially inserted to perform a series of development processing. The light-sensitive material taken out of these processing tanks is dried in the drying section and then sent out to the next step.

In such an automatic developing machine, when a part of a long photosensitive material is improperly conveyed and is blocked in the middle of conveyance, the photosensitive material on the upstream side is still conveyed. This may cause the closed portion to be complicatedly bent and wound around the transport roller, or damage the rack or gear that transmits the transport driving force.

[0004]

In consideration of the above facts, the present invention can protect the intermediate portion of the photosensitive material and damage the transport mechanism when the downstream side of the long photosensitive material is clogged. It is an object to obtain a photosensitive material guide structure for an automatic processor which does not exist.

[0005]

According to the invention of claim 1 of the present application, there is provided a photosensitive material guide structure for an automatic developing machine, wherein the photosensitive material is inserted into a processing solution while being conveyed on a conveying path to perform development processing. It is characterized in that it has an accommodating portion which is provided so as to communicate with a part of the above-mentioned conveying path and which bends the intermediate portion of the photosensitive material whose conveying downstream side is closed in a direction in which the emulsion surface in the wet state is inward.

The invention according to claim 2 of the present application is used in an automatic developing machine having a plurality of photosensitive material processing tanks and a drying section arranged on the downstream side of the processing tanks, and is discharged from the processing tanks. Emulsion in a state where the photosensitive material, which is provided facing the conveyance path of the photosensitive material to the drying section and has a downstream side blocked in the drying section, has a bent portion in the middle, and the photosensitive material bent portion is wet It is characterized by having a movable plate that grows toward the upper side of the processing tank while sliding the surfaces on each other.

[0007]

According to the first aspect of the present invention, if the downstream side is blocked while the long photosensitive material is being conveyed, the intermediate portion which is subsequently fed is bent. Since the emulsion portions in the wet state are inwardly slid and accommodated in the accommodating portion while being accommodated in the accommodating portion, the photosensitive material does not complicatedly bend and close at the closing portion. Further, since the photosensitive material is also stored in the storage portion, if the blockage is released, the bent portion is appropriately moved in the direction in which the bending is canceled, that is, the product is moved to the downstream side.

According to the second aspect of the present invention, when the downstream side of the light-sensitive material is closed in the drying section and the middle section is bent, the movable plate moves and the upper surface of the processing tank is bent while sliding the wet emulsion surfaces against each other. The department will enter as it grows. In general, the upper part of the processing tank has an inner lid that prevents evaporation of the processing liquid between it and the opening / closing lid of the automatic developing machine, and a space is provided between them, so this space is used as a bending part accommodation space. After releasing the blockage, the bent photosensitive material is sent again toward the drying section to be a product after drying. In this case, the movable plate is moved by the pressure of the bending portion generated in the intermediate portion of the photosensitive material, and in addition, the occurrence of the bending portion is detected by a sensor such as a limit switch or a phototransistor, and driving means such as a solenoid. It may be driven by.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an automatic processor 10 to which the present invention is applied.
It is shown. In this automatic processor 10, the color developing tank 1
2, bleaching tank 13, bleaching / fixing tank 14, washing tank 15, 1
6 and stabilizing tanks 17 are provided side by side and filled with a color developing solution, a bleaching solution, a bleaching / fixing solution, washing water and a stabilizing solution.

The printing paper P has an arrow A after the image is printed.
The color developing tank 12 on the most upstream side in this direction is sequentially sent to these processing tanks to perform a series of developing processes. Therefore, the rack 21 inserted into these processing tanks
The small-diameter guide rollers 23 on both sides of the large-diameter guide rollers 22,
24 is abutted to insert the photographic paper P into each processing tank, take it out, and send it to the next processing tank based on a U-shaped movement locus. Further, guide plates 26 are arranged on both sides of the conveyance path of the photographic printing paper P for guiding during conveyance. A crossover rack 28 is arranged between the processing tanks, and a pair of guides for nipping the photographic paper drawn from the processing tank on the upstream side to the crossover rack 28 and sending it to the processing tank on the downstream side. A roller 29 is pivotally supported. These guide rollers 29, large-diameter guide rollers 22 and small-diameter guide rollers 2 in the processing tank
3, 24 are adapted to be rotated by the driving force of a driving means (not shown). Further, the hooks 28A of the crossover rack 28 are locked to the brackets 21A arranged at the portions of the rack 21 protruding above the processing liquid to prevent the brackets 21A from coming out upward, and the crossover rack top plate 28B.
Are provided for these brackets 21A and hooks 28
The upper part of each processing liquid surface is covered by A and the top plate 28B, and the accommodation space 62 is provided between the processing liquid surface and the light shielding lid 58 of the automatic developing machine 10.

The printing paper P taken out upward from the stabilizing tank 17 is delivered to the drying section 34 of the next step through the crossover rack 32. A plurality of conveyance rollers 36 are provided in the drying section 34, and while the photographic printing paper P is nipped and conveyed, warm air from a heat source is applied to the photographic printing paper P to perform a drying process.

As shown in FIG. 2, the photographic printing paper P is fed upwards (in the direction of arrow B) to the crossover rack 32.
Is provided diagonally to the upper right, and a guide plate 42 for changing the moving direction is provided, and after the photographic printing paper P is nipped by the two pairs of nip-conveying rollers 44 and 46 in sequence, the rear wall 10 of the automatic developing machine 10 is
The photographic printing paper P is fed to the drying section 34 through a feeding opening 48 formed in A (FIG. 1). A gear train 52 is provided to apply a rotational force directed to the downstream side of the printing paper P to the nipping and conveying rollers 44, 46.

In the conveyance path of the photographic printing paper P on the downstream side of the nip conveyance roller 46, the rotation guide plate 5 corresponding to the upper side of the conveyance path.
4 are provided. The rotation guide plate 54 is arranged substantially horizontally, and the end portion on the side opposite to the nipping and conveying roller 46 has the pin 5.
A shaft 6 is supported substantially horizontally by 6 and has a role of guiding the photographic paper P sent out from the nip transport rollers 46 to the drying section 34. The rotation guide plate 54 is rotatable clockwise from the state shown in FIG. 2 to the imaginary line state. In this rotation state, the conveyance path of the photographic paper P is located in the accommodation space 6 above each processing tank.
It is designed to communicate with 2. This rotation guide plate 54
Torsion spring 6 for urging the spring to the position shown in FIG.
4 is provided around the pin 56. The biasing force of the torsion coil spring 64 is applied to the photographic paper P that is continuously fed.
When the downstream side of the sheet is blocked in the drying section 34 due to poor drying or the like and a bent section is formed in the middle section of the photographic printing paper P on the downstream side of the nip conveyance roller 46, the rotation guide plate 5 is caused by the pressure of the bent section.
It is preferable that the load is such that 4 is pushed up against the biasing force of the torsion coil spring 64.

Next, the operation of this embodiment will be described. After printing the image, the photographic paper P is inserted into the automatic developing machine 10 in the direction of arrow A, and is sequentially transferred from the color developing tank 12 on the most upstream side to the stabilizing tank 17 on the most downstream side in each processing solution. And a series of development processing is performed.

The photographic paper P taken out from the stabilizing tank 17 in the direction of the arrow B in a substantially vertical direction is sequentially sent out by the guide plate 42 to the nipping and carrying rollers 44 and 46, and further passes through the sending-out opening 48 into the drying section 34. Is sent. Drying section 34
While being conveyed while being nipped and conveyed by the conveying rollers 36, warm air is applied and dried, and further sent to the next step for processing such as cutting.

If the leading edge or the intermediate portion of the photographic printing paper P is blocked in the drying section 34 due to poor transport, the transport roller 36 stops rotating. However, automatic processor 1
The large-diameter guide rollers 22 and the small-diameter guide rollers 23, 24 in each processing tank within 0 are continuously driven to make the developing conditions of the inserted photographic paper P the same, and the middle portion of the photographic paper P is stable. It is pulled out from the tank 17 and reaches the crossover rack 32. Therefore, the middle portion of the photographic printing paper P sent out from the nipping and conveying rollers 46 of the crossover rack 32 is bent because the downstream side is already blocked by the closed portion and the intermediate portion of the photographic paper P is blocked. Therefore, the bending pressure of the bending portion causes the rotation guide plate 54 to rotate to the imaginary line state in FIG. 2, whereby the conveyance path of the photographic printing paper P communicates with the accommodation space 62, and passes through the nip conveyance rollers 46. The intermediate portion of the printing paper P, which is sequentially fed, reaches this bent portion, and as a result, the bent length of this bent portion gradually grows and grows, as shown in FIG. Get in. As a result, the photographic printing paper P is not further sent into the drying section 34 to cause complicated flexion blockage, and also the blockage occurs in the automatic developing machine 10 to get into the respective transport rollers or gears and damage the respective parts. Nor. When the blockage in the drying unit 34 is repaired, the transport roller 36 in the drying unit 34 resumes transporting the downstream side of the printing paper P again, but the intermediate portion of the printing paper P stored in the storage space 62. Also, since this transportation is resumed, it is withdrawn and sent to the drying unit 34, so that it can be directly used as a product.

In particular, as shown in FIGS. 1 and 2, in the middle portion of the photographic printing paper P having a bent portion, the photographic printing paper P is transferred to each processing tank of the automatic developing machine 10 so that the bent opposing surface becomes the emulsion surface. By sending it into the automatic developing machine 10 so that the outer surface of the photographic paper P inserted and drawn out in a U shape in each processing tank of the automatic developing machine 10 becomes the emulsion surface. Due to the nature of the emulsion surface, the opposing surfaces are easily slippery at the bent portion, which causes the storage space 6
The bent portion of the photographic printing paper P accommodated in the inside 2 is not closed in the accommodation space 62, and can be smoothly pulled out even when the conveyance is restarted.

In the above embodiment, the rotation guide plate 5
4 shows a configuration in which it is positioned in the solid line state in FIG. 2 under the biasing force of the torsion coil spring 64, but the rotation guide plate 54 is closed by the weight of the rotation guide plate 54 without providing the torsion coil spring 64. It may be configured to be in a state. Further, in the above-described embodiment, the rotation guide plate 54 is provided between the processing tank and the drying portion of the automatic developing machine 10. However, the rotation guide plate 54 has a bent portion due to blockage of the photosensitive material. It may be provided at a crossover rack portion in the middle portion of a series of treatment tanks as long as it is likely to occur. The photographic printing paper P bent and accommodated in the accommodation space 62 has a bracket 21A of the rack 21 and a crossover rack 2 which pivotally support the large diameter guide roller 22 and the small diameter guide rollers 23 and 24.
Although the top plate 28B that covers the roller 8 does not come into contact with the processing liquid in the processing tank, an inner lid is provided in the accommodation space 62 to form the bottom surface of the accommodation space 62, so that the accommodation space 62 can be reliably held. May be partitioned from the processing tank. In the case where the inner lid is provided to reduce the evaporation of the processing liquid, the upper surface of the inner lid may be used as it is as the bottom surface of the accommodation space 62.

[0019]

Since the present invention has the above-mentioned structure, even when the long photosensitive material is blocked, each part of the automatic developing machine is not damaged and the photosensitive material is inadvertently scratched. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an automatic developing machine to which the present invention is applied.

FIG. 2 is an enlarged sectional view showing a crossover rack portion of FIG.

[Explanation of symbols]

 P Printing paper (photosensitive material) 10 Automatic developing machine 12 Color developing tank 13 Bleaching tank 14 Bleaching / fixing tank 15 Washing tank 16 Washing tank 17 Stabilizing tank 34 Drying section 54 Rotating guide plate (opening / closing lid / movable plate) 62 Storage space (Container)

Claims (2)

[Claims] 1. A photosensitive material guide structure for an automatic developing machine, wherein a photosensitive material is inserted into a processing liquid while being conveyed on a conveying path to perform a developing process, the photosensitive material guiding structure being provided so as to communicate with a part of the conveying path. 1. A photosensitive material guide structure for an automatic processor, comprising: a storage portion for storing a closed middle portion of a light-sensitive material by bending the emulsion surface in a direction in which a wet emulsion surface is inward. 2. A conveying path for a photosensitive material, which is used in an automatic processor having a plurality of photosensitive material processing tanks and a drying section arranged on the downstream side of the processing tanks and which extends from the processing tanks to the drying section. The photosensitive material, which is provided facing to the drying section and is blocked on the downstream side in the drying section, moves when a bending section is formed in the middle section, and the bending section of the photosensitive material is slid over the emulsion surface while the emulsion surfaces are wet with each other. A photosensitive material guide structure for an automatic processor, characterized by having a movable plate that grows toward the surface.