JPH0629963B2 - Film transport unit in automatic film developing device - Google Patents

Description

The present invention relates to a film transport unit in an automatic film developing apparatus.

[Conventional technology]

Generally, an automatic development processing apparatus for a color photographic film (hereinafter, simply referred to as a film) comprises processing steps of appropriately washing with water between processing solutions for development, bleaching, fixing and stabilizing. Further, recently, there has been a remarkable spread of an anhydrous washing specification processing apparatus which processes with a rinsing solution having a component for stabilizing a photosensitive material in place of the conventional washing with water.

FIG. 8 shows an example of the anhydrous washing type. Inside the developing device 70, a developing tank 71, a bleaching tank 72, a fixing tank 73, a rinse tank 74 and a stabilizing tank 75 are arranged in the order of steps, and the respective processing tanks are The developing film is sequentially immersed in the inside to carry out the developing process, and the film taken out from the stabilizing bath 75 in the final step is conveyed into the drying box 76 for the drying process. In such an automatic film developing apparatus, a film transfer unit 80 for transferring a film is incorporated in each of the various processing tanks to transfer the film.

At the time of the transfer, as shown in FIG. 11, a leader L is connected to the tip of the film F, and the film F is transferred in advance of the leader L.
Square holes H are provided at equal intervals in the longitudinal direction.

As shown in FIGS. 9 and 10, the film transport unit 80 normally includes a film transport mechanism 82 inside a rectangular tubular rack 81 suspended in a processing tank and a film transport mechanism 82. A meandering prevention mechanism 83 for the conveyed film is incorporated.

There are various configurations of the film transport mechanism 82. The film transport mechanism 82 shown in FIG. 9 has a plurality of roller shafts 84 mounted at equal intervals in the vertical direction inside the rack 81, and a sprocket 85 is attached to each roller shaft 84. , A pair of hourglass-shaped crown rollers 86 are attached to both sides of the sprocket 85, the roller shaft 84 is rotated, and the rack 8 is rotated.
The square hole H of the leader L and the sprocket 85, which are guided into the inside of the rack 1, engage with the sprocket 85 to move the leader L downward along the inner surface of the rack 81. Also, the rack 81
The leader L transferred to the lower part of the rack 81 is turned 180 ° by the turn guide 87 provided at the lower part of the rack 81, and then transferred upward.

On the other hand, in the film meandering prevention mechanism 83, an arm support shaft 88 is attached between the roller shafts 84, and two sets of film guide frames 89 and 90 supported by the arm support shaft 88 are deflected by a spring 91, so that the film is directed downward. The guide frame 89 is inclined toward the downward transfer path of the film, and the upward film guide frame 90 is inclined toward the upward transfer path of the film. Therefore, the film guide frames 89 and 90 are arranged so that when the leader L passes therethrough, the spring 9
When the leader L passes, the guide frame 89 and 90 return to guide the side edges of the film F following the leader L at the tips of the opposing arms 92 of the guide frames 89 and 90.

Film transport mechanism 82 and film meandering prevention mechanism 83
As described above, since the plurality of shafts 84 and 88 are provided as described above, it is necessary to support the racks 81 by providing the supporting portions of the shafts 84 and 88.

As shown in FIGS. 9 and 10, a conventional rack has a pair of rack plates 100 and a pair of guide plates 10.
1 and 2 are assembled into a rectangular shape by tightening screws, and a large number of shaft insertion holes are formed in the rack plate 100, and the end portions of the shafts are rotatably supported by the shaft insertion holes.

[Problems to be solved by the invention]

By the way, in the above-mentioned film transport unit, since each shaft is supported by inserting the shaft into the shaft insertion hole, there is a disadvantage that it takes much time and effort to assemble the film transport unit.

Further, as shown in FIG. 8, the depth of the treatment tank varies depending on the type of treatment liquid, so the rack to be hung inside the treatment tank should have a length corresponding to the depth of the treatment tank. It is necessary, and as in the conventional case, the rack formed by the pair of rack plates 100 and the pair of guide plates 101 has a constant length. Therefore, several types of racks having a length corresponding to the processing tank are required. There is also the disadvantage that it must be formed.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a film transport unit which solves the above-mentioned inconvenience and is easy to assemble and can easily form racks having different lengths.

[Means for solving problems]

In order to achieve the above-mentioned object, a first aspect of the present invention is to form a square tubular rack by a pair of rack plates that have side plates on both sides and are joined by tightening screws. The side plate is formed with a support part into which the supported part of the film transport mechanism can be inserted from the front edge of the side plate, and the supported part inserted into the support part by the side plate of the other rack plate is prevented from coming off. .

The second invention divides the pair of rack plates in the first invention into an upper part having hanging pins for hanging the processing tank on the processing tank, an intermediate part and a lower part holding a turn guide, and one of the divided surfaces An engaging groove is formed on the first side, and an engaging protrusion is provided on the other side so that a rack plate having a different length can be formed depending on the number of the divided rack plates in the intermediate portion.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

As shown in FIGS. 1 to 3, a film transport unit according to the present invention is provided with a rectangular tubular rack 1 and the rack 1.
And a film transport mechanism 30 incorporated inside.

The rack 1 is hung and suspended in various processing tanks as in the case shown in FIG. Due to the hanging, first on both sides
As shown in the figure, a hanging pin a is provided. The rack 1 is composed of a pair of rack plates 2a and 2b as shown in FIGS. This rack plate 2a,
2b is made of synthetic resin, and a pair of side plates 3 and 3 is provided on both sides of one surface.

Of the pair of rack plates 2a, 2b, a plurality of ribs 4 are formed on the outer surface of the side plate 3 of one of the rack plates 2a, and screw holes 5 are provided on the end faces of the ribs 4 (see FIG. 6). .

A screw insertion hole 6 is provided in the other rack plate 2b so as to face the screw hole 5, and a pair of rack plates 2a and 2b are joined by tightening a screw 7 screwed into the screw hole 5 from the screw insertion hole 6. The rectangular rack 1 is formed.

A pair of vertically long ridges 8 are provided in the central portions of the facing surfaces of the rack plates 2a, 2b, and both sides of the ridges 8 form concave curved surfaces 9 along which the film F is formed. Is transported. In this case, the outer edge of the short leader L is transported along the intersection of the inner surface of the side plate 3 and the curved surface 9. Further, as shown in FIG. 6, a large number of through holes 10 are formed at equal intervals in the vertical direction of the curved surface 9, and the through holes 10 serve as a flow passage for the processing liquid.

The through hole 10 has a V shape in the transfer direction of the film transferred along the inner surfaces of the rack plates 2a and 2b, and does not hinder the movement of the film.

The upper portion of each of the pair of rack plates 2a and 2b is the first
As shown in FIGS. 2, 2 and 6, the side plate 3 is notched along the inner surface thereof, while the notch on the upper side of the rack plate 2a serves as the film inlet 11 and the other rack plate 2a.
The cutout portion of b is the outlet 12.

A bank 13 is passed between the upper portions of both sides of the entrance 11, and projections 14 provided at both ends of the bank 13 are fitted into guide grooves 15 formed on both sides of the entrance 11. This guide groove 1
5 is an opening on the front surface of the side plate 3 and the bank 13 from the front of the side plate 3
The projecting portion 14 can be fitted.

A drive shaft 16 is arranged below the bank 13, and both ends of the drive shaft 16 penetrate the side plates 3 on both sides of the inlet 11, and the gear 17 and the sprocket are provided at the ends of the one side plate 3 protruding outward. 18 is fixed, and the rotational torque is transmitted to the sprocket 18.

A guide member 19 for guiding the movement of the film F fed into the rack 1 from the inlet 11 is arranged below the drive shaft 16. The guide member 19 includes two pairs of arms 20 arranged in parallel with each other so that the film F can pass therethrough, and a small diameter shaft 22 is provided at both ends of a shaft 21 that supports the upper portion of each arm 20. The small-diameter shaft 22 is fitted in a notch 23 formed in the side plate 3 from the front portion of the side plate 3 of the rack plate 2a and is rotatably supported.

An elastic piece 24 is provided outside the outer periphery of the shaft 21, and a hook 25 formed on the elastic piece 24 is engaged with the drive shaft 16. Due to the engagement of the hook 25, the arm 20 is inclined toward the inner surface of the rack plate 2a, and the tip end thereof is in contact with the inner surface of the rack plate 2a. Therefore, when the leader L is fed along the inner surface of the rack plate 2a and the leader L enters between the arm 20 and the abutting portion of the rack plate 2a, the arm 2
0 retreats. At this time, since the shaft 21 rotates a little, the elastic piece 24 is deformed in an arc shape. Further, when the leader L passes, the shaft 21 rotates due to the restoring force due to the deformation of the elastic piece 24, the arm 20 returns to the inclined state and guides both side edges of the film F following the leader L. Therefore, the film F is conveyed without meandering.

The film transport mechanism 30 incorporated in the rack 1 is
The leader L fed into the inside of the rack 1 from the inlet 11 is transferred downward along the inner surface of the rack plate 2a, turned 180 ° at the lower portion of the rack 1, and then along the inner surface of the other rack plate 2b. It is transferred upward, and is transferred toward the outlet 12 from between the pair of squeeze rollers 26 provided at the outlet 12.

As the film transport mechanism 30, the one shown in FIGS. 9 and 10 or the one shown in JP-A-60-191259 can be employed. In the embodiment, a combination of a plurality of sprocket assemblies 31, a plurality of intermediate guides 32 and a turn guide 33 is shown.

As shown in FIGS. 4 and 6, the sprocket assembly 31 includes a shaft 34, a sprocket 35 attached to a central portion of the shaft 34, and a pair of drums for guiding the side edges of the film made of a soft material on both sides thereof. A crown roller 36 is attached. A bearing 37 is rotatably fitted to both ends of the shaft 34, and a gear 38 for transmitting a rotational torque is fixed to the outside of the bearing 37.

The bearing 37 is fitted in a bearing notch 39 provided on the side plate 3 of the rack plate 2a. Here, the bearing notches 39 are formed at required intervals in the length direction of the side plate 3, and each notch 39 is open at the front edge of the side plate 3.
Therefore, the bearing 37 can be fitted into the notch 39 from the front portion of the side plate 3, and in the fitted state, the flat portion 40 formed on a part of the outer periphery of the bearing 37 matches the front edge of the side plate 30. . In addition, a pair of protrusions 41 provided on both sides of the outer periphery of the bearing 37.
Engage with both sides of the side plate 3, and the engagement causes the notch 39
The bearing 37 is prevented from moving to both sides of the.

When the sprocket assemblies 31 are assembled to the one rack plate 2a as described above, the gears 38 at the ends of each sprocket assembly 31 are supported on the outer surface of the side plate 3 of the rack plate 2a as shown in FIG. It meshes with the rotatable idle gear 42. Therefore, when the drive shaft 16 rotates, the shaft 34 of each sprocket assembly 31 also rotates.

The intermediate guide 32 is disposed between the above sprocket assemblies 31, as shown in FIG. As shown in FIG. 5, concave and convex arcuate surfaces 43 are provided on the front and back surfaces of the intermediate guide 32 so as to face the curved surface 9 of the rack plate 2a. The holes 44 are formed at equal intervals so that the processing liquid can flow.

Further, recesses 45 are provided in the central portions on both front and back surfaces of the intermediate guide 32, one end of an elastic plate 46 is attached to the bottom surface of each recess 45, and a forked side 47 is provided at the other end of the elastic plate 46. . One elastic plate 46 of the pair of elastic plates 46
2, the bifurcated piece 47 of the elastic plate 46 extends obliquely downward, while the bifurcated piece 47 of the elastic plate 46 extends obliquely downward.

To attach the elastic plate 46, as shown in FIG. 2, an insertion piece 48 is provided at one end of one side of the elastic plate 46, and the insertion piece 4 is inserted.
8 is provided with a split groove 48 ', the insertion piece 48 is inserted into a hole 49 formed in the bottom surface of the recess 45, and a hook 50 provided at the tip of the insertion piece 48 is engaged around the opening of the hole 49. I am trying.

Further, on both side surfaces of the intermediate guide 32, the pair of protrusions 5
1 is provided on the upper and lower sides, and the projecting portion 51 thereof can be fitted to the guide fitting notch 52 provided on the side plate 3 of the rack plate 2a. Here, the notch 52 is
The notches 52 provided between the bearing notches 39 are open at the front edge of the side plate 3. The intermediate guide 32 can be assembled by fitting the protruding portion 51 of the intermediate guide 32 from the open portion of the cutout portion 52. In this case, the plurality of intermediate guides 32 are attached with the elastic pieces 46 aligned so that the bifurcated pieces 47 are inclined toward the transport direction of the film F.

As shown in FIG. 1, the turn guide 33 is incorporated between the lower portions of the side plates 3 of the rack plate 2a. On both sides of the turn guide 33, as shown in FIG.
The protruding portion 53 is formed, and the protruding portion 53 is fitted into the cutout portion 54 provided in the lower portion of the side plate 3. This notch 54
Is opened at the front edge of the side plate 3, and the protruding portion 53 is inserted from the opening.

In addition, a pair of flanges 5 are provided on both sides of the turn guide 33.
5 is formed, and an arc-shaped leader guide surface 56 is provided on the upper edge of the flange 55.

Further, on the upper part of the turn guide 33, a pair of arc guide portions 57 is provided between the pair of flanges 55 to guide the film F following the leader L. This pair of arc guide portions 57
A guide groove 58 into which a lower portion of the outer periphery of the sprocket 35 of the sprocket assembly 31 installed above it can be fitted is provided between them.

FIG. 7 shows another embodiment of the rack plates 2a and 2b. The rack plates 2a, 2b are divided into a plurality of pieces in the length direction, an engaging groove 59 is formed in one of the divided surfaces, and an engaging protrusion 60 is provided in the other. For this reason,
The rack plates 2a and 2b are formed by fitting the engagement protrusions 60 into the engagement grooves 59.

When the rack plates 2a and 2b are divided, they are divided into three or more blocks, that is, an upper block A, an intermediate block B, and a lower block C, and many intermediate blocks B having the same shape are prepared. With this configuration,
Upper block A, middle block B and lower block C
Racks having different lengths can be formed by sequentially connecting the blocks and increasing or decreasing the number of the intermediate blocks B.

Now, the side plates 3 of the pair of rack plates 2a and 2b are opposed to each other and overlapped with each other, a screw 7 is inserted into the screw insertion hole 6 of the rack plate 2b, and the screw 7 is screwed into the screw hole 5 of the other rack plate 2a. The square tubular rack 1 can be formed by tightening with.

Therefore, before combining the pair of rack plates 2a and 2b, the sprocket assembly 31 and the intermediate guide 32 are alternately fitted between the side plates 3 of the one rack plate 2a, and the turn guide 33 is fitted between the lower parts of the side plates 3, The bearing 37 between both ends of the sprocket assembly 31, the protrusion 51 of the intermediate guide 32, and the protrusion 53 of the turn guide 33 are fitted into the notches 39, 52, 54 of the side plate 3 to couple the rack plates 2a, 2b to each other. As a result, the film transport unit as shown in FIG. 2 can be assembled.

The above-described film transport unit is incorporated into each processing tank of the automatic film developing apparatus, and the sprocket 35 of each sprocket assembly 31 is rotated, and the reader L shown in FIG. Then, the sprocket 35 engages with the square hole H formed in the leader L, and the rotation of the sprocket 35 causes the leader L to be conveyed downward along the inner surface of the rack plate 2a. When the leader L moves to the lower portion of the rack 1, it is guided by the turn guide 33 to turn upward, and then is conveyed upward along the inner surface of the other rack plate 2b.

When the leader L passes between the rack plates 2a and 2b and the tips of the elastic pieces 46 during the transportation of the leader L, each elastic piece 46 deforms toward the sprocket 35 and the leader L passes. The elastic piece 46 returns to the inclined state by the restoring elasticity due to the deformation, and comes into contact with the side edge of the film F following the leader L. Therefore, the film F is conveyed in one direction without meandering.

〔effect〕

As described above, in the present invention, the rectangular tubular rack is formed by a pair of rack plates having a pair of side plates on both sides, while the side plates of the rack plate support the film transport mechanism incorporated in the rack. Since the film transport mechanism can be fitted to the support portion from the front part of the side plate, the film transport mechanism is fitted to the support portion, and then a pair of rack plates are coupled by tightening screws. The film transport unit can be formed by combining the film transport unit into a rectangular tube shape. Therefore, the film transport unit can be assembled very easily, and the side plate of the other rack plate can prevent the supported portion from coming out of the support portion, so that the film transport mechanism can be stably supported. it can.

Also, a pair of rack plates on the top with hanging pins,
Since it is divided into an intermediate part and a lower part, an engaging groove is provided on one of the divided surfaces, and an engaging projection is formed on the other side so that connection is possible, it is possible to increase or decrease the number of divided rack plates in the intermediate part. Rack plates of length can be formed. Therefore, a rack having a length corresponding to the depth of the processing tank can be formed extremely easily, and since the upper divided rack plate has the hanging pins, the rack transfer unit of any length can be formed. With the above hanging pins, it is possible to hang it stably on the processing tank regardless of the depth of the processing tank.

Furthermore, since the rack plates divided into the upper and lower parts are joined by the engagement of the engagement groove and the engagement protrusion, the rack plate becomes an integral shape,
The film transport unit can be easily attached to and detached from the processing tank.

[Brief description of drawings]

1 to 7 show an embodiment of a film transport unit according to the present invention. FIG. 1 is a front view showing a state in which a film transport mechanism is incorporated in a rack plate on the one hand, and FIG.
The figure is a vertical side view of the same as above, FIG. 3 is a side view of the same as above, FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 1, and FIG. 5 is taken along line VV of FIG. Sectional view, FIG. 6 is an exploded perspective view of the same,
FIG. 7 is an exploded perspective view of the same rack plate, FIG. 8 is a vertical sectional front view showing an embodiment of an automatic film developing apparatus, and FIG.
The figure shows a vertical front view of a conventional film transport unit,
FIG. 10 is a sectional view taken along line XX of the above, and FIG. 11 is a perspective view showing a state in which a film is connected to the reader. 1 ... rack, 2a, 2b ... rack plate, 3 ...
Side plate, 30 ... film transport mechanism, 39 ... notch.

Claims (2)

[Claims] 1. A film transport unit in an automatic film developing apparatus in which a film transport mechanism is incorporated inside a rectangular tubular rack, and supported portions of the film transport mechanism are supported by both side plates of the rack. Is formed by a pair of rack plates that are joined together by tightening screws, and the side plate of one of the rack plates is provided with a support part into which the supported part of the film transport mechanism can be inserted from the front edge of the side plate. A film transport unit in an automatic film developing apparatus, wherein a supported portion inserted into a supporting portion is prevented from coming off by a side plate of the other rack plate. 2. A film transporting unit in an automatic film developing apparatus in which a film transporting mechanism is incorporated inside a rectangular tubular rack, and a supported portion of the film transporting mechanism is supported by both side plates of the rack. It has a side plate on its side and is formed by a pair of rack plates that are joined together by tightening screws.The side plate of one rack plate is provided with a support part into which the supported part of the film transport mechanism can be inserted from the front edge of the side plate. , An upper part having hanging pins for suspending the supported part inserted into the supporting part by the side plate of the other rack plate and hanging the pair of rack plates on the processing tank, a lower part for holding the intermediate part and the turn guide And an engaging groove is formed on one of the divided surfaces and an engaging protrusion is provided on the other side, and the length varies depending on the number of the divided rack plates in the intermediate portion. Film transport unit in the automatic film developing device characterized by that the rack plate allowed the formation.