JPH0134189Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field of the invention) This invention is a photographic film processing machine that uses a group of rollers to convey a photographic film and performs development and fixing processing. This invention relates to a photographic film processing machine which prevents developer from accumulating in the grooves of supporting side plates.

(Technical background of the invention and its problems) Fig. 1 is a diagram showing the schematic configuration of a general photographic film processing machine, in which photographed photographic film 1 is placed between a group of rollers mounted between opposing side plates. Therefore, it is carried in through the carry-in port 2, developed in the developing section 3 filled with developer, and then transferred to the squeeze roller 6 at the final stage of the developing section.
After the developing solution adhering to the photographic film 1 is squeezed out at A and 6B, it is fixed in a fixing section 4 filled with a fixing solution, and then transported to the next process through an exit 5. Here, the rotating shafts of the roller group are fitted into bearings embedded in the side plates 3A and 3B of the developing section 3 or the side plates 4A and 4B of the fixing section 4, respectively, and the photographic film 1 is mounted on these side plates 3A and 4B. , 3B and 4A, 4B. Fig. 2 shows how the squeeze rollers 6A and 6B are engaged with the side plates 3A and 3B. Bearings 8B and 9 buried in 3B
The axial length of the rollers 6A and 6B is narrower than the gap between the side plates 3A and 3B. However, with this mounting method,
Since there are gaps between the side plates 3A, 3B and the rollers 6A, 6B, both ends 1A and 1 of the photographic film 1
B protrudes from the roller surface during conveyance. With rollers such as rollers 6A and 6B or rollers 7A and 7B where the developer is attached to the circumferential surface of the roller, such protrusion of both ends of the photographic film 1 from the roller surface causes uneven development. ,
Although this does not directly affect the finish of the image on the photographic film 1, density unevenness occurs at both ends of the developed photographic film, making it unsightly.

For this reason, conventionally, as shown in FIG.
Rollers 6A and 6B are installed on the side plates 3A and 3B, respectively.
Grooves 31A and 31B of a shape corresponding to the cross-sectional shape of
Not only are the bearings 8A, 9A and 8A, 8B buried, but also the ends of the rollers 6A and 6B are loosely fitted into the grooves 31A and 31B, respectively, so that both ends of the photographic film 1 are flush with the roller surface during conveyance. It doesn't bulge out. This method can be similarly applied to the side plates 4A and 4B of the fixing section 4 and the rollers 7A and 7B. However, such a groove 31
A, 31B are drilled into the side plates 3A, 3B, the fourth
As shown in the figure, the developer that has adhered to the photographic film 1 little by little from the bottom of the groove 31A or 31B begins to accumulate, and eventually becomes a source of water between the rollers 6A and 6B shown in FIG. There is a disadvantage that the developing solution accumulates in the triangular band-shaped portion 10 of the rollers 7A and the triangular band-shaped portion 11 between the rollers 7A and 7B, resulting in uneven development of the photographic film 1.

(Purpose of the invention) An object of the invention is to provide a photographic film processing machine which eliminates the above-mentioned drawbacks by providing grooves in the side plate for allowing the developer to escape.

(Summary of the invention) This invention carries the photographic film from a developing section filled with developer to a fixing section filled with fixing solution using a pair of rollers mounted between opposing side plates for developing and fixing processing. This relates to a photographic film processing machine that is designed to carry out processing, and includes grooves into which both ends of at least one of the pair of rollers located at the exit of the developing section and the pair of rollers located at the entrance of the fixing section are fitted. The groove is bored in the side plate, and an escape groove for the residual developer is connected to the bottom of the groove.

(Embodiment of the invention) Fig. 5 is a cross-sectional view of the roller supporting portion of the side plate of this invention shown in correspondence with Fig. 3, and Fig. 6 is a side view thereof shown in correspondence to Fig. 4. A groove 31A in which bearings 8A and 9A are embedded, which fit the rotating shafts of rollers 6A and 6B, respectively, and a side plate 3B.
The grooves 31B in which the bearings 8B and 9B are buried are both slightly larger in diameter than the conventional examples explained in FIGS. Escape grooves 22A, 33A, 32B, and 33B are vertically connected to reach the developer (or fixer).

In this structure, the photographic film 1 is conveyed without protruding from the rollers 6A and 6B, so that uneven development does not occur at both ends. Further, as the photographic film 1 is conveyed, the developer that has adhered to the photographic film 1 tends to accumulate at the bottoms of the grooves 31A and 31B, but the diameters of the grooves 31A and 31B are larger than the roller diameter. Therefore, the effect of surface tension is small, and the developer is placed in the groove 31A or 31B.
The developing section 3 flows through the relief grooves 32A and 33A or 32B and 33B connected to the bottom.
The liquid is collected in the developer solution filled with water.

Note that this side plate structure can be similarly applied to the side plates 4A and 4B that support the rollers 7A and 7B at the entrance of the fixing section 4. In this case, the developer will fall into the fixer. Furthermore, in the above, the relief grooves 32A and 32B are vertically connected to the bottom of the groove 31A or 31B, but it is sufficient to allow the accumulated developer to fall into the developer (or fixer) below and escape. , they can also be installed in series with an inclination.

(Effect of the invention) As described above, according to the structure of the side plate of this invention,
It is possible to prevent uneven development by preventing the photographic film from protruding from the circumferential surface of the roller, and to prevent the developer from accumulating in the groove in which a portion of the circumferential surface of the roller is loosely fitted.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a schematic configuration of a general photographic film processing machine, Fig. 2 is a cross-sectional view of a side plate of a roller supporting portion using a conventional roller supporting method, and Fig. 3 is a roller using another conventional roller supporting method. A sectional view of the side plate of the support part, Figure 4 is a front view thereof, and Figure 5 is a sectional view of the side plate of the support part.
FIG. 6 is a sectional view of the roller support portion of an embodiment of the invention shown in correspondence with the figures, and FIG. 6 is a front view of the roller support portion of the embodiment shown in correspondence to FIG. 1... Photographic film, 3... Developing section, 3A, 3
B, 4A, 4B... Side plate, 4... Fixing section, 6A,
6B, 7A, 7B...Roller, 8A, 8B, 9
A, 9B...Bearing, 31A, 31B...Groove, 32
A, 33A, 32B, 33B...Escape groove.

Claims (1)

[Scope of utility model registration request] In a photographic film processing machine in which a photographic film is conveyed from a developing section to a fixing section for development and fixing processing by a pair of rollers mounted between opposing side plates, the photographic film is located at the exit of the developing section. A groove is formed in the side plate into which both ends of at least one of the pair of rollers located at the entrance of the fixing section are loosely fitted, and a groove is formed in the bottom of the groove to allow residual developer to escape. A photographic film processing machine characterized by a series of grooves.