JP3203897B2 - Automatic processing equipment for photographic photosensitive materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic developing apparatus for developing a photographic material such as a film or photographic paper.

[0002]

2. Description of the Related Art Generally, when a film is developed,
As shown in FIG. 7, two films F to be subjected to development processing are connected to a reader L, and the film F is sent to a development processing section in advance of the reader L.

Here, the leader L is made of a flexible synthetic resin sheet, and has a feed hole a at the center in the width direction.
Are formed at equal intervals.

FIG. 6 shows a part of an automatic developing apparatus for developing a film F.
The color developing solution is color development processing is transported into the treatment tank T ₁ which is filled, then the bleaching solution is bleached is conveyed into the treatment tank T ₂ filled.

[0005] The film F of the bleaching solution is conveyed into a processing tank T ₃ filled with a fixing solution and subjected to fixing processing, and further conveyed into a processing tank (not shown) filled with a stabilizing solution to be stabilized. Is processed.

In the above-described developing apparatus, a rack (not shown) is hung and suspended in processing tanks T ₁ , T ₂ , and T ₃ filled with various processing solutions, and sprockets 30 provided on the racks are rotated. The sprocket 30 and the feed hole a
The leader L is conveyed by the engagement with.

In a developing apparatus for developing photographic paper, a feed roller is used in place of the sprocket 30, and the photographic paper is conveyed in one direction by rotation of the feed roller.

In the above-described developing apparatus, each processing tank T ₁ , T _1
2 , a pair of outlet rollers 31, 31 is provided on the upper part of the rack suspended over T ₃ , and the pair of outlet rollers 31, 31 is provided.
A photographic light-sensitive material such as a film or a photographic paper is passed between them, and a processing liquid adhering to the photographic light-sensitive material is drained.

Further, in the developing processing apparatus, an upper reversing guide 32 and a plurality of upper turn rollers 33 are provided at an upper portion between adjacent processing tanks to guide the photographic light-sensitive material sent from the processing tank into the next processing tank. ing.

In the above-described automatic developing apparatus, the level of the processing liquid filled in the processing tanks T ₁ , T ₂ , T ₃ is not all the same, but is often different.

[0011]

In a conventional automatic developing apparatus, a pair of outlet rollers 31, 31 are rotatably mounted at fixed positions on a rack. When suspended in T ₁ , T ₂ , T ₃ , the pair of outlet rollers 31, 31 are all kept at the same height, and the pair of outlet rollers 31, 31 are immersed in the processing liquid having the highest liquid level. In this state, the exit rollers 31, 31 may be disposed on the liquid surface of the processing liquid having a low liquid level. For this reason, the exit roller 3 located outside the liquid
In the cases of Nos. 1 and 31, the processing solution removed from the photographic light-sensitive material often crystallized, and there was a risk that the photographic light-sensitive material might be damaged by the attachment of the crystals.

Further, in the conventional automatic developing apparatus, a plurality of upper turn rollers 33 for guiding the movement of the photographic light-sensitive material are drum-shaped as shown in FIG. Since the turn roller 33 is rotatably supported and rotated by contact with the photosensitive material, when the photosensitive material moves across several processing tanks T ₁ , T ₂ , and T _3. However, there is a problem that a strong tensile force acts on the photographic light-sensitive material to deform the photographic light-sensitive material.

Further, the processing liquid adheres to the surface of the upper turn roller 33 to crystallize, and the relative movement of the upper turn roller 33 and the photographic material may damage the photographic material.

In some cases, the upper turn roller 33 is disposed outside the liquid and the photographic photosensitive material is conveyed by sandwiching the photographic photosensitive material between the rollers. Will be higher.

An object of the present invention is to prevent a photographic light-sensitive material from being damaged.

[0016]

In order to solve the above-mentioned problems, in the first invention, an adhesion solution of a photographic light-sensitive material is placed on top of each of a plurality of processing tanks filled with various development processing solutions. In an automatic developing apparatus for a photographic light-sensitive material provided with a pair of outlet rollers for removing liquid, a pair of outlet rollers provided in the plurality of processing tanks are individually mounted in a vertically adjustable manner, respectively . A pair of out
The lower part of the outer periphery of the mouth roller is immersed in the processing liquid.
The configuration is such that the true photosensitive material is developed .

Further, in the second invention , the first invention
Photosensitive material fed from a pair of exit rollers
The photosensitive material into the next processing tank
An upper turn roller for guiding is provided, the upper turn roller has the same diameter throughout the entire axial direction, and a rotation driving means for rotating the upper turn roller at the same speed as the transfer speed of the photographic photosensitive material is provided.

[0018]

According to the first aspect of the invention, the height of the pair of outlet rollers is adjusted according to the liquid level in the processing tank after the processing, so that the pair of outlet rollers in each processing tank is converted into the processing liquid. Since the treatment liquid can be immersed, crystallization of the treatment liquid on the surface of the outlet roller can be prevented.

Further, in the second invention, since the upper turn roller can be rotated at the same speed as the photographic photosensitive material, no tensile force acts on the photographic photosensitive material and the photographic photosensitive material and the upper turn roller can be rotated. Since it is possible to prevent the occurrence of a slip between them, it is possible to prevent the photosensitive material from being damaged.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows an automatic development processing apparatus for developing a film. The reader L and the film F shown in FIG.
Are sequentially fed into a processing tank T ₁ filled with a color developing solution, a processing tank T ₂ filled with a bleaching solution, and a processing tank T ₃ filled with a fixing solution.
Bleaching and fixing are performed.

The film F after the fixing process is conveyed into a processing tank filled with a stabilizing solution and subjected to a stabilizing process, but the processing tank is not shown in the figure.

In each of the processing tanks T ₁ , T ₂ , T ₃ , a rack 1 shown in FIGS. 3 and 4 is hung.

The rack 1 has a pair of guide plates 3 attached to both sides of the rack body 2, and a transfer path 4 for the reader L and the film F is provided between each guide plate 3, 3 and the rack body 2. ing.

A plurality of sprockets 5 which can be engaged with the feed holes a of the leader L are vertically provided at a central portion in the width direction of the rack body 2 at intervals shorter than the length of the leader L. Both sides of the outer periphery of the sprocket 5 are fitted into vertically extending grooves 6 formed on the inner surfaces of the guide plates 3, 3, and when the leader L is inserted into the transfer path 4, the feed hole a of the leader L is formed. It is designed to engage.

A drive shaft 7 is rotatably supported on one upper side of the rack body 2. A helical gear 8 is attached to an end of the drive shaft 7. When the rack 1 is suspended from the processing tanks T ₁ , T ₂ , and T ₃ , the helical gear 8 meshes with the worm gear 10 of the interlocking shaft 9 disposed at one upper portion of the processing tanks T ₁ , T ₂ , and T _3. The rotation of the interlocking shaft 9 is transmitted to the drive shaft 7. Also,
The rotation of the drive shaft 7 is transmitted to a torque transmission shaft 12 inserted into the rack body 2 via a pair of bevel gears 11, 11, and the rotation of the torque transmission shaft 12 is transmitted via a pair of bevel gears 13, 13. The power is transmitted to the sprocket 5.

A reader L is provided below the rack body 2.
Turn roller 1 for changing the transfer direction of the paper by 180 °
4 and a lower reversing guide 15 for guiding the reader L around the lower turn roller 14.

When the rack 1 having the above structure is suspended in the processing tanks T ₁ , T ₂ , and T ₃ , and the leader L is inserted into one transfer path 4 of the rack 1, the leader L rotates the sprocket 5. Is transported downward. When the reader L is transported to the lower portion of the rack 1, the transport direction is changed by 180 ° by the lower turn roller 14, and the reader L is transported upward on the other transport path 4.

A pair of exit rollers 16, 16 are provided above the transport path through which the reader L is transported upward.
Roller shafts 16a at both ends of the pair of outlet rollers 16, 16
Is rotatably supported by a bearing plate 17 provided on the upper part of the rack 1.

Here, a pair of left and right insertion holes 18 are provided in the bearing plate 17 at required intervals in the vertical direction, and the roller shafts 16a of the pair of exit rollers 16 are inserted into and removed from each of the insertion holes 18. It is free.

In the embodiment, a pair of left and right insertion holes 18 are formed in three stages so that the height of the outlet rollers 16, 16 can be adjusted in three stages. Is transmitted to one exit roller 16.

The rotation of the drive shaft 7 is controlled by a pair of outlet rollers 16,
16, a drive gear 19 is mounted on the drive shaft 7, and a first idle gear 20, a second idle gear 21, and a third idle gear 22 to which rotation of the drive gear 19 is transmitted are provided on one side of the rack 1. Are arranged vertically and rotatably supported. Also, a pair of exit rollers 16, 16
Gears 23, 23 meshing with each other are mounted on the roller shaft 16a.

Here, one gear 23 of the pair of gears 23 engages with the first idle gear 20 in a state where the pair of outlet rollers 16 are supported by the upper insertion hole 18, and is inserted in the center. In a state supported by the hole 18 and the lower insertion hole 18, the third idle gear 22 is engaged.

The pair of outlet rollers 16, 16 are rotated in contact with each other, and a process in which the leader L and the film F are inserted between the outlet rollers 16, 16 to adhere to the leader L and the film F is performed. The liquid is removed.

[0035] The exit rollers 16 and 16, depending on the liquid level of the processing solution in the processing tank T _1, T _2, T ₃ and adjust the mounting height, as bleaching solution or the fixing solution, crystals In the case of a processing solution that is easily converted, the lower periphery must be immersed in the processing solution.

As described above, the positions of the exit rollers 16, 16 are adjusted in accordance with the level of the processing solution, and each exit roller 1 is adjusted.
By immersing the outer peripheral portions of the rollers 6 and 16 in the processing liquid, it is possible to prevent the crystals from adhering to the surfaces of the outlet rollers 16 and 16.

For this reason, it is possible to prevent the film F to be developed from being damaged by contact with the exit rollers 16.

Between the upper portions of the various processing tanks T ₁ , T ₂ , T ₃ , a plurality of upper turn rollers 24 for guiding the leader L and the film F sent from the outlet rollers 16, 16 to the next processing tank, The upper turn roller 24
And an upper guide 25 for guiding the leader L and the film F are provided on the outer periphery of the camera.

As shown in FIG. 5, the upper turn roller 24 has the same diameter over the entire axial direction. The rotation of the drive shaft 7 is transmitted to the upper turn roller 24 via a gear transmission mechanism 26, and the leader L and the film F
Is rotated at the same peripheral speed as the transport speed.

As described above, by rotating the upper turn roller 24 at the same peripheral speed as the transport speed of the leader L and the film F, the film F is transferred to the plurality of processing tanks T ₁ , T
_2, T ₃ to be astride state not applied tension to the film F, and because the slip does not occur between each other film F and the upper turn roller 24, to prevent scratching the film F be able to.

In the embodiment, the development processing of the film F has been described as an example.
A rack having a photographic paper feed roller is used.

[0042]

The present invention is configured as described above, and has the following effects.

[0043] According to the invention described in claim 1, is possible to be positioned individually adjusted depending on the liquid level of the processing liquid filling the pair of exit rollers for multiple draining into the processing tank Therefore, the outlet roller can be reliably immersed in the processing liquid. For this reason, it is possible to prevent crystals from adhering to the exit roller and prevent the photosensitive material from being damaged.

According to the second aspect of the present invention, the upper turn roller for guiding the photographic light-sensitive material sent from the processing tank into the next processing tank is rotated at the same speed as the moving speed of the photographic light-sensitive material. Therefore, even when the photographic photosensitive material moves while straddling a plurality of processing tanks, no tension is applied to the photographic photosensitive material, and the upper turn roller has the same diameter over the entire length in the axial direction. Deformation of the photosensitive material can be prevented.

Further, it is possible to prevent the upper turn roller and the photographic material from slipping relative to each other and to prevent the photographic material from being damaged.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of an automatic developing apparatus according to the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the above.

FIG. 3 is a perspective view of the same rack.

FIG. 4 is a cross-sectional plan view of FIG. 2;

FIG. 5 is a perspective view showing an outlet roller and an upper turn roller of the above.

FIG. 6 is a schematic view showing a conventional automatic developing apparatus.

FIG. 7 is a perspective view showing a conventional upper turn roller.

[Explanation of symbols]

T ₁ , T ₂ , T ₃ Processing tank 16 Outlet roller 18 Insertion hole 24 Upper turn roller

Claims (2)

(57) [Claims] 1. An automatic developing process for a photographic light-sensitive material having a pair of outlet rollers for removing liquid adhering to the photographic light-sensitive material provided at an upper portion of each of a plurality of processing tanks filled with various developing solutions. In the apparatus, a pair of outlet rollers provided in the plurality of processing tanks are individually mounted so as to be vertically adjustable, and an outer periphery of the pair of outlet rollers is provided.
The photographic material is exposed with the lower part immersed in the processing solution.
An automatic developing apparatus for photographic photosensitive material, which performs image processing . 2. An upper turn roller for guiding a photographic photosensitive material to a next processing tank is provided in a transfer path of the photographic photosensitive material sent out from the pair of outlet rollers, and an outer diameter of the upper turn roller is set in an axial direction. 2. The automatic photographic material processing apparatus according to claim 1, wherein a rotation driving means for rotating the upper turn roller at the same speed as the photographic light-sensitive material is provided.