JP2002351037A - Photographic processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photographic processing device which does not scratch a photosensitive material during development, carries out smooth transportation and carries out a good quality photographic process with the minimum quantity of development solution necessary for development. SOLUTION: This photographic processing device is provided with a processing tank stored with a development solution, a transport mechanism to transport an exposed photosensitive material dipping it in a developer in the processing tank. The transport mechanism is provided with a guide part to guide the photosensitive material. The guide part arranged in the developer has a smooth guide surface opposed to one of the surfaces of the photosensitive material. A plurality of narrow recessed grooves extending in a transportation direction is formed on the guide surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a processing tank for storing a developing solution and a transport mechanism for transporting the exposed photosensitive material while immersing it in the developing process of each processing tank. The present invention relates to a photographic processing apparatus having a guide section for guiding a material.

[0002]

2. Description of the Related Art Generally, a photographic processing apparatus includes a printing exposure processing section having an exposure apparatus, a developing processing section having a processing tank such as a developing processing tank, a bleaching processing tank, and a fixing / stabilizing processing tank. A drying section for drying and a print discharge section for discharging the dried photosensitive material are provided.

In this type of photographic processing apparatus, when photographic processing is performed on a photosensitive material such as photographic paper, the photosensitive material is exposed by a printing exposure processing unit while being transported by a transport mechanism such as a transport roller. The exposed photosensitive material is conveyed to a development processing section, and development processing is performed in a processing tank of the development processing section.

[0004] The transport mechanism provided in the development processing section is usually composed of an in-tank transport rack provided in a processing tank, and an upper transport rack provided above each processing tank.

In these transport racks, a plurality of transport rollers composed of a drive roller and a driven roller that presses against the drive roller and co-rotates are provided at intervals in the transport direction. A guide portion for guiding the material along the transport path is provided. And
The photosensitive material that has been exposed to light is transported while being immersed in a developing solution in each processing tank by a transport roller.

Incidentally, the guide portion of the transport rack is shown in FIG.
As shown in FIG. 8 and FIG. 8, a plurality of narrow and convex ribs C extending in the transport direction are formed on the transport surface B of the guide portion A. Are transported while contacting these ribs C.

The reason why these ribs C are provided is that, unless a plurality of ribs C are formed on the transport surface B, only the smooth transport surface B is formed, and the photosensitive material P comes into close contact with the transport surface B. Since there is a possibility that the photosensitive material P cannot be smoothly conveyed, a gap serving as a non-contact portion is provided between the conveying surface B and the photosensitive material P by forming the rib C, and the conveying surface B of the photosensitive material P is formed. To prevent close contact.

[0008]

However, in the case of the guide portion A of the in-tank transport rack provided in the developing solution, the developing solution always enters between the transport surface B and the photosensitive material P. Even if the rib C is not formed between the transport surface B and the photosensitive material P, the transport surface B and the photosensitive material P do not come into direct contact with each other.

Conversely, if a rib C is formed on the transport surface B of the guide portion A provided in the developing solution, the photosensitive material P is developed in the liquid while being in contact with the tip of the rib C. The pressure at the time of contact when the rib C comes into contact with the photosensitive material P may cause a linear streak in the photosensitive material P, thereby deteriorating the print quality.

Further, since a gap is formed between the conveying surface B and the photosensitive material P by the height of the rib C with respect to the conveying surface B, the developing solution is stored in the gap. The photosensitive material P to be developed is conveyed so that the surface on which the image is printed does not face the transport surface B, that is, the back surface side where the photosensitive material P does not need to be developed faces the transport surface B. Therefore, the conveying surface B and the photosensitive material P
The development processing liquid accumulated in the gap formed between them becomes an unnecessary excess liquid.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to smoothly carry a photosensitive material without developing a streak during the development processing and to reduce the development processing solution to the minimum necessary for the development processing. It is an object of the present invention to provide a photographic processing apparatus capable of performing high quality photographic processing with the amount of photographic processing.

[0012]

In order to achieve the above object, the invention according to claim 1 is characterized in that a processing tank in which a developing solution is stored and a photosensitive material which has been exposed are immersed in a developing process in the processing tank. In a photographic processing apparatus having a transport mechanism for transporting the photosensitive material while the transport mechanism is provided with a guide section for guiding the photosensitive material, the guide section disposed in the developing solution has a smooth surface facing one surface of the photosensitive material. The guide surface is provided with a plurality of narrow grooves extending in the transport direction.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic diagram of a photographic processing apparatus of the present invention.

This photographic processing apparatus includes a printing exposure processing section 1 for printing an image of a developed film on a photographic paper P which is a photographic photosensitive material, and a photographic paper P exposed by the printing exposure processing section 1. Developing section 2 for developing
A drying unit 3 for drying the photographic paper P developed by the developing unit 2; and a print discharge unit 4 for discharging the photographic paper P dried.

The photographic processing apparatus further includes a transport mechanism 5 for sequentially transporting the photographic paper P to the printing exposure processing section 1, the developing processing section 2, the drying processing section 3, and the print discharge section 4. The mechanism 5 includes a transport roller 6 composed of a drive roller 61 that is driven to rotate via a drive motor (not shown) and a driven roller 62 that presses against the roller surface of the drive roller 61 and rotates together. 7 is provided.

The printing exposure processing section 1 includes magazines 11 and 11 in which photographic paper P as a photosensitive material is wound in a roll shape, and a light source 1.
2, a mirror tunnel 13, a negative mask 14, and a lens unit 15.

The development processing section 2 has a plurality of processing tanks 21 divided into sections, and a developing solution (C
D), various processing liquids such as a bleach-fixing liquid (BF) and a stabilizing liquid (STB) are stored.

Further, the developing section 2 is provided with a plurality of in-tank transfer racks 8 as a transfer mechanism 5 and a plurality of upper transfer racks 9.

The in-tank transfer racks 8 are provided in the respective processing tanks 21, and the upper transfer rack 9 is provided so as to extend over the adjacent in-tank transfer racks 8.

Each of the transport racks 8 and 9 is configured so that it can be attached to and detached from the processing tank 21 of the photographic processing apparatus. The upper transfer rack 9 is immersed inside and is disposed outside the liquid in each processing tank 21.

As shown in FIGS. 1 and 2, the in-tank transfer rack 8 includes a driving roller 61 and a driving roller 6.
1 and a plurality of transport rollers 6 each comprising a driven roller 62 that presses and rotates together with the support roller 1 and a support 81 that supports the transport rollers 6. A guide portion 82 for guiding the paper P along the transport direction is formed. FIG. 2 is a perspective view of the support 81 in the in-tank transfer rack 8 with the transfer rollers 6 removed.

The guide portion 82 is provided between the transport rollers 6 and has a guide surface 83 facing the back surface of the printing paper P.

As shown in FIG. 1, the upper transport rack 9 has two transport rollers 6 (a left end in FIG. 1) comprising a drive roller 61 and a driven roller 62 which presses against the drive roller 61 and rotates together therewith. The uppermost transport rack 9 on the most upstream side has three transport rollers 6.)
And a support 91 for supporting these transport rollers 6. As shown in FIG. 5, the support 91 is formed with a curved guide portion 92 for guiding the photographic paper P along the transport direction. ing. FIG. 5 is a perspective view of the support 91 in a state in which the transport rollers 6 in the upper transport rack 9 have been removed, with the bottom surface of the support 91 facing upward.

The guide portion 92 is provided between the transport rollers 6 as shown in FIG.
As shown in FIG. 5, a curved guide surface 93 facing the back surface of the printing paper P is provided.

In the developing section 2, the photographic paper P exposed in the printing exposure section 1 is guided by guide sections 82 and 92 by the transport rollers 6 of the in-tank transport rack 8 and the upper transport rack 9. Meanwhile, the developer is conveyed so as to pass through each processing tank 21 in order, and the developing processing is performed.

The drying section 3 is provided with a heater 31 so that the photographic paper P is appropriately dried by the heater 31 while the photographic paper P is transported by the transport roller 6. The photographic paper P dried in the drying processing unit 3 is sent to the print discharge unit 4, and is discharged from the outlet 41 to the discharge tray 42.
Is discharged to

In this photographic processing apparatus, the printing exposure processing section 1
In, the photographic paper P fed out of the magazines 11 and 11 by the transport rollers 6 is cut, and the photographic paper P fed out of the magazines 11 and 11 is cut (not shown), and the cut photographic paper P is transported by the transport belt 7. The image of the film is printed on the photographic paper P on the conveyor belt 7.

The printing paper P on which the image is printed is
The paper is sent to the development processing unit 2 by the transport roller 6, where the development processing is performed.

In the above embodiment, in the embodiment of the present invention, the guide surface 83 of the guide portion 82 of the in-tank transfer rack 8 is used.
And the curved guide surface 9 of the guide portion 92 of the upper transport rack 9
3 is a smooth surface opposite to one surface of the photosensitive material P, and a plurality of narrow grooves 84 are formed on the guide surface 83 of the in-tank transport rack 8 so as to extend in the transport direction. A plurality of narrow convex ribs 94 extending in the transport direction are formed on the curved guide surface 93.

As shown in FIGS. 3 and 4, the concave grooves 84 formed on the guide surface 83 of the guide portion 82 of the in-tank transfer rack 8 are formed into linear grooves at a predetermined depth at equal intervals. As shown in FIGS. 5 and 6, the ribs 94 formed on the curved guide surface 93 of the guide portion 92 of the upper transport rack 9 have a predetermined narrow height and a uniform width along the curved guide surface 93 at regular intervals. Is formed.

In this embodiment, the groove 84 has a depth of 0.1 mm.
The rib 94 has a height of 1.5 mm and a width of 3 mm.

As described above, according to the present embodiment, the groove 84 is formed on the guide surface 83 of the guide portion 82 and the guide portion 92 is formed.
Since the ribs 94 are formed on the curved guide surface 93, the predetermined groove is formed only between the photographic paper P and the concave groove 84 in the developing solution by the concave groove 84 of the guide portion 82 of the in-tank transport rack 8. There is no need to form a gap to form a large gap between the guide surface 83 and the photographic paper P, and the groove 84 prevents the guide surface 83 and the photographic paper P from completely contacting each other. can do. As a result, only a small amount of the processing liquid is stored in the concave groove 84 formed on the guide surface 83, and the excess photographic processing liquid is not condensed between the guide surface 83 and the photographic paper P, and the photographic paper P is smoothly transported. can do.

Outside the processing liquid, a predetermined gap can be formed between the photographic paper P and the curved guide surface 93 by the ribs 94 of the guide portion 92 of the upper transport rack 9, and the back surface of the photographic paper P is curved. The photographic paper P is smoothly conveyed without adhering to the sheet 93.

Moreover, in the developing solution, the photographic paper P is
Since the paper P is conveyed while being brought into contact with the large guide surface 83, the printing paper P is guided by the large guide surface 83, and the pressure applied to the photographic paper P by the guide surface 83 is dispersed. Such a line can be prevented from being formed, and there is no fear that the print quality is deteriorated.

As described above, according to the present embodiment, the developing solution is reduced to the minimum amount necessary for the developing process while the photographic printing paper P during the developing process is smoothly transported without any streaks. Thus, photographic processing with good print quality can be performed.

[0036]

According to the present invention, there is provided a processing tank for storing a developing solution, and a transport mechanism for transporting the exposed photosensitive material while immersing the photosensitive material in the developing process of the processing tank. The transport mechanism guides the photosensitive material. In a photographic processing apparatus provided with a guide portion, the guide portion provided in the developing solution has a smooth guide surface facing one surface of the photosensitive material, and the guide surface is provided in the transport direction. The structure is characterized in that a plurality of narrow grooves extending to the photosensitive material are formed, so that a gap is formed between the photosensitive material and the groove, and a gap is required between the photosensitive material and the guide surface. In addition, it is possible to prevent the guide surface and the photosensitive material from completely adhering to each other with the groove.

As a result, the back surface of the photosensitive material is completely adhered to the guide surface while the photosensitive material is in contact with the guide surface having a large area without excess developing solution remaining between the guide surface and the photosensitive material. The photosensitive material is guided by a guide surface having a large area, so that the pressure applied to the photosensitive material at the guide portion is dispersed, and damage to the photosensitive material can be prevented. It is possible to prevent the print quality from deteriorating as in the related art.

As described above, the photosensitive material during the developing process is not damaged, and the transport can be carried out smoothly. Processing can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a photographic processing apparatus according to the present invention.

FIG. 2 is a perspective view of a support in a state where a transfer roller of a transfer rack in a tank is removed.

FIG. 3 is a partial perspective view of a guide surface of a guide portion of the in-tank transfer rack.

FIG. 4 is a partial sectional view of a guide surface of a guide portion of the intra-tank transfer rack.

FIG. 5 is a perspective view of the support in a state where a transfer roller of the upper transfer rack is removed, and shows a state in which a bottom surface of the support is directed upward;

FIG. 6 is a partial cross-sectional view of a guide surface of a guide section of the upper transport rack.

FIG. 7 is an explanatory view showing a structure of a guide unit provided in a conventional transport mechanism of a developing unit.

FIG. 8 is a partial cross-sectional view of the conventional guide section shown in FIG.

[Explanation of symbols]

 P Photographic paper (photosensitive material) 21 Processing tank 5 Transport mechanism 8 In-tank transport rack 82 Guide section 83 Guide surface 84 Groove 9 Upper transport rack 92 Guide section 93 Guide surface 94 Groove

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yukio Ikeda 579-1 Umehara Umehara, Wakayama-shi, Wakayama Noritsu Koki Co., Ltd. F-term (reference) 2H098 AA02 CA25 CA28 3F101 FA01 FC05 FC07 LA01 LB03

Claims (1)

[Claims] 1. A processing tank for storing a developing solution, and a transport mechanism for transporting the exposed photosensitive material while immersing the exposed photosensitive material in the developing process of the processing tank, wherein the transport mechanism includes a guide section for guiding the photosensitive material. In the photographic processing apparatus provided, the guide portion disposed in the developing solution has a smooth guide surface facing one surface of the photosensitive material, and the guide surface has a narrow width extending in the transport direction. A photographic processing apparatus, wherein a plurality of concave grooves are formed.