JP3259618B2 - Film transport reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film transport reader used for developing a film by an automatic film developing apparatus.

[0002]

2. Description of the Related Art Generally, when a film is developed by an automatic film developing apparatus of a leader transport type, the leading end of the film drawn from a patrone is connected to a reader, and the leader is moved forward to transfer the film to a film developing section. I try to make it.

Here, the leader is made of a synthetic resin sheet and has flexibility, and feed holes that can be engaged with a feed sprocket provided in the film developing section are provided at equal intervals.

[0004] By the way, if the film comes off from the leader during the developing process of the film, the film stops in the processing solution and the developing process cannot be performed, and it takes time and effort to take out the film. There is a risk of exposing the film. Therefore, the film needs to be firmly connected to the reader.

[0005] In general, the connection between the leader and the film is made by attaching a splice tape.
It takes time and effort to attach the splice tape and remove it after the development processing, and it is necessary to connect the film to the leader at a predetermined position with high accuracy. Therefore, there is a disadvantage that a special work table for splicing is required. Also, the splice tape cannot be reused, and therefore has a problem in economy.

In order to solve the above problems, Japanese Patent Application Laid-Open No. 54-158924 proposes a film hooking type reader / film connecting structure. 4 and 5 show the connecting structure, in which two notches 21 are provided at the rear of the flexible sheet-like reader 20 in the leader transport direction, and a tongue 22 formed between the notches 21 is provided.
Is inserted into an opening 24 provided at the leading end of the film 23, and a neck portion 25 provided on the tongue 22 is engaged with a side edge of the opening.

In the above-mentioned connecting structure, splicing tape is not required, so that it is economical. Further, since the tongue 22 is directed rearward in the transport direction of the reader 20, the tongue 22 is provided in the film transport path of the automatic film developing apparatus. There is no inconvenience of being caught, and the reader can be smoothly transported along the film transport path.

Further, since a splice tape is not required, the film can be accurately connected to a predetermined position of the reader.

[0009]

[SUMMARY OF THE INVENTION Incidentally, in has been linked structure disclosed in the above publication, since the width dimension W ₁ of the tongue 22 is larger than the width W ₂ of the opening 24, is curved tongue 22 in the width direction It is necessary to insert and remove the tongue 22 with respect to the opening 24 in a state in which the leader 20 and the film 23 are connected and disconnected.

Further, when the film is transported along the film path of the automatic film developing apparatus, the film 23 receives a tensile force at the turn portion of the film path. At this time, since the tongue 22 receives the load directly, the tongue 22 may be deformed and fall out of the opening 24, and there is a problem in connection reliability.

Further, the film 23 is formed on the neck portion 2 of the tongue 22.
Since the film 23 is swingable about the center 5, there is a risk that the film 23 meanders during the transfer and comes into contact with the film path, thereby damaging the film 23.

SUMMARY OF THE INVENTION An object of the present invention is to provide a low-cost reader which can easily connect and disconnect a film and has a high reliability of connection and can be easily manufactured with a simple structure.

[0013]

In order to solve the above-mentioned problems, in the first invention, feed holes are provided at equal intervals in a flexible sheet-like reader main body, and the transfer of the reader main body is performed. The first and second insertion holes into which the leading end of the film is inserted at the rear part in the direction are separated by a required distance in the reader transfer direction, and are inserted in front of the first insertion hole provided at the front part in the reader transfer direction. Is formed, and the strip provided inside the cut is folded back by 180 °, and the tip of the strip traverses the first insertion hole in the reader transfer direction so that the tip is the peripheral portion of the first insertion hole. And an engaging piece that can be engaged with an engaging hole provided at the leading end of the film is adopted.

According to the second aspect of the present invention, between the bent position of the strip in the first aspect and the first insertion hole, the upper surface of the strip is engaged to raise the strip. That is, a configuration in which a presser band for preventing the pressure was provided was adopted.

[0015]

In the reader having the above structure, the leading end of the film is inserted from the second inserting hole into the first inserting hole, and the engaging piece of the leading end of the strip is inserted into the engaging hole provided at the leading end of the film. Is engaged, the film is pulled back, the leading end of the engaging piece is supported by the peripheral edge of the first insertion hole, and the leader and the film are held in a connected state.

[0016]

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

As shown in FIG. 1, feeding holes 2 are formed at equal intervals in a widthwise central portion of a flexible sheet-like reader body 1 formed of a synthetic resin sheet. The leader body 1 is conveyed in one direction by the rotation of the sprocket that engages with the leader.

The hole 2 is provided at the rear of the reader body 1 in the transfer direction.
The first insertion hole 3 and the second insertion hole 4 are provided on both sides of the reader body 1.
At a required interval in the transfer direction.

The first insertion hole 3 and the second insertion hole 4 are sized so that the film 5 can be inserted therein. When the film 5 is inserted into each of the insertion holes 3 and 4, both side edges of the film 5 become the insertion holes 3 and 4 respectively. And the film 5 is prevented from swaying by the contact.

Further, a U-shaped cut 6 is formed in the reader body 1 at the front side of the first insertion hole 3 in the leader transfer direction, and a strip 7 formed inside the cut 6 is formed at both ends of the cut 6. Are bent 180 ° along a straight line connecting the two, and are superposed on the surface of the reader main body 1.

At the tip of the strip 7 is provided an engagement piece 9 which can be engaged with an engagement hole 8 formed at the tip of the film 5. The engaging piece 9 traverses the first insertion hole 3 in the reader transfer direction, and its tip is supported by the peripheral edge of the first insertion hole 3.

Now, the leading end of the film 5 is inserted into the second insertion hole 4 from above the surface of the reader body 1, and the leading end of the film 5 projecting to the back side of the leader body 1 is inserted into the first insertion hole 3. As a result, the engagement piece 9 is pushed by the leading end of the film 5, and the strip 7 is deformed upward. By inserting the film 5 until the engaging hole 8 formed in the film 5 is opposed to the engaging piece 9, engaging the engaging piece 9 with the engaging hole 8, and pulling back the film 5, The strip 7 is held so as to overlap the surface of the reader main body 1, and the tip of the engaging piece 9 is supported by the peripheral edge of the first insertion hole 3 to connect the film 5 to the reader main body 1. Can be.

Here, the numbers of the engagement pieces 9 and the engagement holes 8 are arbitrary, and as shown in FIG.
Is formed, when a tensile force is applied to the film 5, the tensile force can be received by each of the engaging pieces 9, so that the deformation of the engaging pieces 9 is small, and the reliability of connection can be improved. it can.

The film 5 connected to the reader body 1
The film is conveyed to the developing section of the automatic film developing apparatus by the advance of the reader body 1. At this time, since the strip 7 and the engagement piece 9 face the rear part of the leader body 1 in the transfer direction, there is no inconvenience that the strip 7 and the engagement piece 9 are caught in the film transfer path. The film 5 can be smoothly transported along.

Further, since the strip 7 is superposed on the surface of the reader main body 1, when the reader main body 1 changes the transfer direction in the turn section, the strip 7 favorably follows the bending of the reader main body 1. I do. For this reason, the curvature of the turn portion in the film transfer path can be reduced.

When the connection of the film 5 is released,
The film 5 is pushed in to release the engagement between the engagement piece 9 and the engagement hole 8, and the film 5 is pulled back while maintaining the engagement release.

FIG. 3 shows another example of the reader. In this example, a pair of elongated holes 10, 10 are formed between the bent position of the strip 7 and the first insertion hole 3, and the strip 7 is inserted into the elongated holes 10, 10 to form a pair of elongated holes. The holding band 11 formed between the holes 10 and 10 is engaged with the upper surface of the strip 7.

As described above, the holding band 11 is attached to the strip 7.
Can prevent the strip-shaped piece 7 from rising, and the reliability of the connection of the film 5 can be improved.

[0029]

As described above, according to the present invention, by inserting the leading end of the film from the second inserting hole into the first inserting hole, the engaging piece is inserted into the engaging hole formed at the leading end of the film. When the film is pulled back after the engagement between the engagement hole and the engagement piece, the leading end of the engagement piece is moved to the first position.
Since the film is supported by the peripheral edge of the insertion hole to prevent the film from coming off, the film can be very easily connected to the leader, and when the film is pushed in, the engagement between the engagement piece and the engagement hole is released. Therefore, the connection can be easily released.

Further, since the leading end of the engaging piece is supported by the peripheral edge of the first insertion hole, it does not come off from the engaging piece even if a tensile force is applied to the film during transport of the film, and the connection reliability is extremely high. high.

Further, a first insertion hole and a second insertion hole are formed in the sheet-shaped reader body, and a U-shaped notch is provided.
Since it has a simple configuration folded back at 0 °, it is easy to manufacture and a low-cost reader can be provided.

Further, since the strip is held down by the holding band, the lifting of the strip can be prevented, so that the reliability of the connection can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a reader according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a perspective view showing another example of the reader according to the present invention.

FIG. 4 is a plan view showing a conventional reader.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leader main body 2 hole 3 1st insertion hole 4 2nd insertion hole 5 Film 6 Cut 7 Band-shaped piece 8 Engagement hole 9 Engagement piece 10 Elongated hole 11 Holding band

Claims (3)

(57) [Claims] 1. A flexible sheet-like reader main body is provided with feeding holes at regular intervals, and a first insertion hole into which a leading end of a film is inserted at a rear portion of the leader main body in a transfer direction, and a second insertion hole.
A U-shaped notch is formed at the front of the first insertion hole provided at the front of the reader in the leader transfer direction with a predetermined interval between the insertion hole and the leader transfer direction, and a strip is provided inside the notch. Is turned 180 °, and the first end of the strip is
A film transport reader having an engagement piece that is traversed through the insertion hole in the leader transport direction and whose leading end is supported by the peripheral edge of the first insertion hole, and that can be engaged with an engagement hole provided at the leading end of the film; . 2. The holding band according to claim 1, further comprising a pressing band which is engaged with an upper surface of the strip to prevent the strip from being lifted, between the bent position of the strip and the first insertion hole. Film transport reader. 3. A pair of elongated holes into which a strip can be inserted between a bent position of the strip and a first insertion hole, and a holding band is formed between the elongated holes. 5. The film transport reader according to 4.