JPH0511423A - Photosensitive material processing device - Google Patents

Abstract

PURPOSE:To allow the smooth transportation and immersion in processing liquid at the time of subjecting photographic films to development processing by providing guide parts for guiding photosensitive materials and transporting parts for transporting by folding the photosensitive materials at both ends of a processing tank. CONSTITUTION:The guide parts 31 are provided at both ends of the hollow- shaped processing tank 21 and a processing liquid is packed into the processing tank 21. On the other hand, a pair of transporting belts 41, 42 are so provided in the guide parts 21 that the belts can move in an arrow (4a) direction. Projecting parts 42a are intermittently formed on the contact surfaces of the transporting belt 42 with the film 1. On the other hand, projecting parts 41a are continuously formed on the contact surface of the transporting belt 41 with the film 1. The projecting parts 42a, 41a are formed in the positions coinciding with perforations 1b formed on both sides of the film 1 and, therefore, the film 1 is transported while the film is held from both side surfaces of the perforations 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-sensitive material processing apparatus, and particularly to a film processing suitable for carrying a light-sensitive material such as a photographic film or for automatically developing the material by successively dipping it in a developing solution while carrying Regarding technology.

[0002]

2. Description of the Related Art A photographic film (hereinafter, simply referred to as a film) 1 is wound in a cylindrical patrone 2 as shown in FIG. 5 in a roll shape, and the tip of the film is pulled from the peripheral surface of the patrone 2. It is configured so that it can be pulled out in a substantially tangential direction in a strip shape. Since the film 1 is wound around the core in the cartridge 2, the film 1 has a curl as shown in the drawing and has a so-called curled shape. Also, film 1
When the film is loaded into the camera, the front end 1a of the film 1 may be broken or the perforation 1b may be cut off.

On the other hand, in a developing device for developing the film 1, the film 1 is conveyed while being successively dipped in a developing tank, a fixing tank and the like. For this dipping and conveyance, as shown in FIG. 6, a pair of conveying rollers 4 and a guide 5 are provided in the processing tank 3 at predetermined intervals, the film 1 is nipped by the pair of conveying rollers 4, and rotated in the direction of the arrow. Do it.

[0004]

When the film 1 is conveyed, if it is curled or the front end portion 1a is bent, it is rubbed against the side surface of the guide 5 as shown by an imaginary line in FIG. In some cases, the conveyance speed increased and the conveyance speed decreased. Further, there is a disadvantage that the wall surface of the guide 5 is rubbed and worn.

When such an accident occurs, the feeding side of the film 1 detects that the film cannot be conveyed, and unless the feeding is stopped, the film 1 bends or jams at the catching position. The film 1 will be damaged due to sticking. Further, the developing tank or the like has a turn portion for changing the transport direction of the film 1, but the turn is performed by bending the film 1 in the direction opposite to the curl direction. For this reason, the film 1
Jamming often occurred in the structure for transporting paper. In order to eliminate the above-mentioned inconvenience, conventionally, an uncurled leader tape has been attached to the tip of the film. However, this method requires a leader tape,
There are various problems such as time-consuming attachment.

On the other hand, recently, an automatic developing apparatus capable of developing a leaderless film has been used. In this case, the film is cut at a predetermined position at right angles to both sides of the film 1 as shown by the dotted line x in FIG. However, the entire shape of the film 1 is still curled, and therefore there is concern about the conveyance of the film 1, and high-speed conveyance cannot be performed. Therefore, there is a limit to the efficiency of development processing.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a light-sensitive material processing apparatus capable of smoothly carrying and dipping a processing solution when developing a photographic film. It is in.

[0008]

The object of the present invention is to provide a photosensitive material processing apparatus in which a photosensitive material is immersed in a processing solution while being conveyed, and both side portions of a processing tank in which the photosensitive material is immersed in the processing solution. And a pair of conveyor belts for sandwiching and conveying both side portions in the width direction of the photosensitive material in the guide portion while providing a guide portion along the longitudinal direction of the processing tank. Achieved by the processor.

[0009]

According to the photosensitive material processing apparatus, guide portions for guiding both widthwise side portions of the photosensitive material are provided at both end portions of the processing tank.
Since a conveying belt for nipping and conveying the both sides of the photosensitive material is provided, the photosensitive material can be smoothly conveyed regardless of whether the photosensitive material is curled, and troubles due to rubbing or catching of the photosensitive material are caused. Can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 3 show the basic structure of a photosensitive material processing apparatus to which the present invention is applied, and FIG. 4 is a schematic structural diagram of an automatic developing apparatus to which the present invention is applied.
In describing the embodiments, the basic structure of the photosensitive material processing apparatus will be described, and then the automatic developing apparatus will be described.

The basic structure will be described with reference to FIGS. The photosensitive material processing apparatus 11 includes a processing tank 21 for dipping the film 1, a pair of guide portions 31 that serve as guides when the film 1 is conveyed, and a pair of upper and lower conveyor belts that move while sandwiching the film 1. It is composed of 41 and 42.

The photosensitive material processing apparatus 11 is basically a thin flat box body formed vertically long in the transport direction (arrow a) of the film 1. However, since both side end portions form the guide portions 31. There is a step. As for the internal structure, as shown in FIG. 2, guide portions 31 are provided on both sides of a hollow processing tank 21, and the processing solution is filled in the processing tank 21. That is,
If the photosensitive material processing device 11 is used as a developing tank in the developing device described later, the processing tank 21 is filled with a developing solution, and if it is used in a fixing tank, a fixing solution is filled. The processing tank 21 and the guide portion 31 are integrally formed of synthetic resin or integrally formed of a metal plate in order to prevent liquid leakage.

On the other hand, the guide portion 21 is provided with a pair of upper and lower conveyor belts 41, 42 so as to be movable in the direction of arrow a shown in FIG. The conveyor belts 41 and 42 are preferably endless belts, and the driving means for moving the conveyor belts 41 and 42 is preferably driven by rollers.

As shown in FIG. 2, the transport belts 41 and 42 are configured to move along the guide portion 31 with the film 1 sandwiched therebetween, but the shapes of the two belts are not the same. . That is, on the contact surface of the transport belt 42 with the film 1, as shown in FIGS.
a is formed intermittently. On the other hand, on the contact surface of the transport belt 41 with the film 1, as shown in FIG.
a is continuously formed. And the convex portions 42a, 41
Since a is formed at a position corresponding to the perforations 1b formed on both sides of the film 1, the film 1 is sandwiched and conveyed from both side faces of the perforations 1b. However, although the convex portions 41a have a continuous shape, the convex portions 42a are intermittently formed at regular intervals. Therefore, the film 1 is provided on both sides of the surface on which the image is formed, in other words, the perforations 1b.
At the formation position of, the convex portion 42a is intermittently pressed against the convex portion 42a formed on the conveyor belt 41, so to speak, that it is conveyed in a sandwiched state.

Data such as a frame number may be recorded between the perforation 1b and the edge of the film 1. Therefore, by arranging the convex portions 41a and 42a to be sandwiched at the formation position of the film feed hole 1a, the convex portion 42a can be prevented from covering the data formation position. Since the convex portions 42a are formed intermittently, the processing liquid easily comes into contact with the data forming position when immersed in the processing liquid, and the data can be developed so that the data can be reliably viewed. .

Next, referring to FIG. 4, a photosensitive material processing apparatus 1
The application example of No. 1 will be described. Note that FIG. 4 is a schematic configuration diagram of the automatic developing device, and the photosensitive material processing device 11 can be used not only for transporting a film but also for a developing tank 105 described later. In the housing 101, from the left to the right, a developing tank 105, a bleaching tank 106, a fixing tank 107, 3
An individual washing tank 108 and a drying unit 109 are sequentially installed. The photosensitive material processing apparatus 11 is used for each tank from the developing tank 105 to the washing tank 108. In FIG. 4, the developing tank 105 is illustrated and described for convenience of illustration.

An auto loading device for setting the cartridge 2 and supplying the film 1 is provided on the upper left side of the developing tank 105. In FIG. 4, a pair of the film 1 is pulled out from the cartridge 2. Laura 3
0, a cutter 31 for cutting the film 1, and a guide 32 for conveying the film 1 to the developing tank 105 are schematically illustrated. Although the guide 32 is appropriately provided with a supply roller and the like, illustration and description thereof are omitted.

The film 1 pulled out from the cartridge 2 by the pull-out roller 30 is cut into the leading end portion by the cutter 31, and then conveyed into the developing tank 105 through the guide 32. Although the photosensitive material processing device 11 is installed in the developing tank 105, the processing tank 21 and the guide portion 31 are not shown in FIG. 4, and the transport of the film 1 is schematically shown. That is, the one conveyance belt 41 that nips and conveys the film 1 is the pair of drive rollers 1
11 and the other end of the conveyor belt 4
2 is also endlessly wound around the four driving rollers 112 and the driving roller 111. Then, the transport belts 41 and 42 are driven in the transport direction of the film 1 by the drive rollers 111 and 112, and the film 1 transports the film 1 to the transport belt 4.
From the open ends of Nos. 1 and 42, they are caught between the two and then conveyed while being sandwiched. Since the developing tank 105 is filled with the developing solution, the developing process is performed while the film 1 is immersed in the developing solution and conveyed.

At this time, in order to improve the contact of the developing solution with the film 1, a circulation hole 21a as shown in FIG. 2 is opened on one wall surface of the processing tank 1 to improve the circulation of the developing solution. The processing speed may be improved. The film 1 thus dipped in the developing solution is guided by the guides 35 provided between the tanks, conveyed to the bleaching tank 106 and dipped therein, subjected to the bleaching treatment, and then conveyed to the fixing tank 107. . The film 1 immersed in the fixer is washed with water 1
The film 1 which has been transported to No. 08 and immersed in the three washing tanks 108 and washed with water is transported to the drying unit 109. The drying unit 109 is configured to blow hot air into the transport path of the film 1 as indicated by an arrow, and the film 1 dried by the warm air is transported to a baking process (not shown).

As described above, the film 1 pulled out from the cartridge 2 is immersed while being sequentially conveyed in each of the developing tanks 105 and below. During the conveyance, both sides of the film 1 are conveyed by the conveyor belts 41, 42. It is sandwiched between.
Therefore, unlike the conventional case, there is no inconvenience that the film 1 is caught in each tank, the clogging of the film 1 and an accident due to the clogging can be prevented, and the transport speed of the film 1 can be increased. .

Although the embodiments of the present invention have been described above, the present invention is not limited to the above. For example, since the transport belt 41 may contact the film 1, the transport belt 41 may be formed to have the same width as the film 1. Further, in the above-described embodiment, the processing tank 21 has the same space above and below, but since the amount of the processing liquid contacting the back surface side of the film 1 may be small, the back surface side space of the processing tank 21 may be narrowed. Good. Furthermore,
The structure for bridging the conveyor belts 41, 42 and the drive rollers 111, 112 is not limited to the above, and the conveyor belts 41, 4
The number 2 may be further shortened and a large number of drive rollers may be provided. The photosensitive material processing apparatus includes a guide 3
It can be applied as a conveying means other than the step of performing the immersion treatment such as 2.

[0022]

As described above, in the photosensitive material processing apparatus according to the present invention, the film pulled out from the cartridge is sandwiched by the pair of conveyor belts from both sides, and the conveyor belt is guided by the guides. It is configured to be transported. Therefore, when transporting the film, the film is transported while being sandwiched between the pair of transport belts, which enables high-speed transport and
Unexpected accidents such as jamming can be prevented. Therefore, when applied to an automatic developing device, automatic development of a film can be performed efficiently and accurately.

[Brief description of drawings]

FIG. 1 shows a photosensitive material processing apparatus 1 to which the present invention is applied.
It is a perspective view which shows an example.

FIG. 2 is a cross-sectional view of a photosensitive material processing apparatus.

FIG. 3 is a perspective view of a main part showing a shape of a conveyor belt.

FIG. 4 is a system diagram showing a configuration of an automatic developing device.

FIG. 5 is a perspective view showing a conventional film drawing state.

FIG. 6 is an explanatory view showing a film being caught.

[Explanation of symbols]

1 photographic film 2 Patrone 11 Photosensitive material processing device 12 treatment tanks 31 Guide part 41 Conveyor belt 41a continuous convex portion 42 Conveyor belt 42a intermittent projection 100 Automatic development device 105 developing tank 106 Bleaching tank 107 fixing tank 108 water washing tank 109 Drying section 111, 112 drive roller

Claims (2)

[Claims] 1. A photosensitive material processing apparatus for immersing a photosensitive material in a processing solution while transporting the photosensitive material, and a guide along the longitudinal direction of the processing tank, which is provided on both sides of the processing tank for immersing the photosensitive material in the processing solution. A photosensitive material processing apparatus, characterized in that a pair of conveyor belts for sandwiching and conveying both side portions of the photosensitive material in the width direction are provided in the guide portion. 2. The photosensitive material processing apparatus according to claim 1, wherein an intermittent projection is formed on at least the surface of the conveyor belt which is in contact with the emulsion surface.