JPH09166860A - Film carrying leader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leader easy to manufacture having a simple constitution capable of easily splicing a film. SOLUTION: A 1st insertion hole 3 and a 2nd insertion hole 4 are formed at the rear end part of the sheet-like leader main body 1 which is carried in one way. A U-shaped notch 6 is formed ahead of the 1st insertion hole 3, and a belt-like piece 7 formed inside the notch is bent at an angle of 180 deg. so as to be overlaid on the leader main body 1. An engaging piece 9 is installed on the top end of the belt-like piece 7. The film 5 with an engaging hole 8 formed at the top end part is inserted from the 2nd insertion hole 4 to the 1st insertion hole 3, then, the engaging piece 9 is fitted into the engaging hole 8, thereafter, by pulling back the film 5, the top end part of the engaging piece 9 is supported by the peripheral edge part of the 1st insertion hole 3, then, the engaging hole 8 is prevented from getting away from the engaging piece 9.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Generally, when a film is developed by a leader transport type automatic film developing apparatus, the leading end of the film pulled out from the cartridge is connected to a leader and the leader is advanced to transfer the film to the film developing section. I am trying to let you.

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

By the way, when the film is removed from the reader during the developing process of the film, the film is stopped 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.

The connection between the leader and the film is generally connected by applying a splice tape.
Since it takes time and effort to attach the splice tape and remove it after the development process, and moreover, the film needs to be accurately connected to the leader at a predetermined position, there is a disadvantage that a special work table for splicing is required. Further, since the splice tape cannot be reused, there is a problem in economic efficiency.

In order to solve the above problems, Japanese Patent Application Laid-Open No. 54-158924 proposes a film hook type leader / film connection structure. 4 and 5 show the connection structure, in which two cuts 21 are provided at the rear part of the flexible sheet-shaped reader 20 in the leader transfer direction, and a tongue 22 formed between the cuts 21 is shown.
Is inserted into the opening 24 provided at the tip of the film 23, and the neck portion 25 provided on the tongue 22 is engaged with the side edge of the opening.

In the above connecting structure, since no splicing tape is required, it is economical, and since the tongue 22 faces rearward in the transfer direction of the leader 20, the tongue 22 is in the film transfer path of the automatic film developing apparatus. The inconvenience of being caught does not occur, and the leader can be smoothly transported along the film transport path.

Further, since the splice tape is not necessary, the film can be accurately connected to the predetermined position of the leader.

[0009]

By the way, in the connecting structure described in the above publication, since the width dimension W ₁ of the tongue 22 is larger than the width dimension W _{2 of the} opening 24, the tongue 22 is bent in the width direction. In this state, the tongue 22 needs to be inserted into and removed from the opening 24, which makes it extremely difficult to connect and disconnect the leader 20 and the film 23.

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 is directly subjected to the load, the tongue 22 may be deformed and come out of the opening 24, which causes a problem in reliability of connection.

Further, the film 23 is a neck portion 2 of the tongue 22.
Since the film 23 is swingable around 5, the film 23 meanders during transfer and comes into contact with the film path, which may damage 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 films and has a simple structure with high reliability of connection and which is easy to manufacture.

[0013]

In order to solve the above-mentioned problems, in the first aspect of the invention, the sheet-like reader body having flexibility is provided with feed holes at equal intervals, and the leader body is transferred. The first insertion hole and the second insertion hole, into which the leading end of the film is inserted, are provided at the front side of the first insertion hole provided at the front part in the leader transfer direction with a required space in the leader transfer direction. Forming a V-shaped notch, folding the strip provided inside the notch 180 °, crossing the first insertion hole in the leader transfer direction at the tip of the strip, and the tip is the peripheral edge of the first insertion hole. , And an engaging piece that can be engaged with an engaging hole provided at the tip of the film is provided.

Further, in the second invention, the upper surface of the strip is engaged with the upper surface of the strip between the bending position of the strip and the first insertion hole in the first invention to lift the strip. It employs a structure with a holding band to prevent it.

[0015]

In the leader having the above structure, the tip of the film is inserted from the second insertion hole into the first insertion hole, and the engagement piece at the tip of the strip is inserted into the engagement hole provided at the tip of the film. After engaging with, the film is pulled back, and the leading end of the engaging piece is supported by the peripheral edge of the first insertion hole to hold the leader and the film 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, a flexible sheet-like leader body 1 made of a synthetic resin sheet is provided with feed holes 2 at equal intervals in the center portion in the width direction. The rotation of the sprocket that engages with causes the reader body 1 to be transported in one direction.

The hole 2 is provided at the rear of the leader body 1 in the transfer direction.
A first insertion hole 3 and a second insertion hole 4 are provided on both sides of the reader body 1
Are provided at required intervals 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 the insertion holes 3 and 4, both side edges of the film 5 are inserted into the insertion holes 3 and 4, respectively. The side edge of the film 5 and the film 5 is prevented from swinging.

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

An engaging piece 9 that can engage with an engaging hole 8 formed at the tip of the film 5 is provided at the tip of the strip 7. The engagement piece 9 traverses the first insertion hole 3 in the leader 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 the front surface of the reader body 1, and the leading end of the film 5 protruding to the back side of the reader body 1 is inserted into the first insertion hole 3. As a result, the engagement piece 9 is pushed by the tip of the film 5 and the strip 7 is deformed upward. By inserting the film 5 to a position where the engaging hole 8 formed in the film 5 faces the engaging piece 9, engaging the engaging piece 9 with the engaging hole 8, and then pulling back the film 5, The strip 7 is held in a state of overlapping with the surface of the reader 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 body 1. You can

Here, the numbers of the engaging pieces 9 and the engaging holes 8 are arbitrary, and as shown in FIG. 1, the engaging pieces 9 and the engaging holes 8 are provided.
When a plurality of members are formed, the tensile force can be received by each engaging piece 9 when the tensile force acts on the film 5, so that the engaging piece 9 is less deformed and the reliability of the connection can be improved. it can.

The film 5 connected to the reader body 1 is
The leader body 1 leads the sheet to the developing section of the automatic film developing apparatus. At this time, since the strip 7 and the engaging piece 9 face the rear portion in the transfer direction of the reader body 1, there is no inconvenience that the strip 7 and the engaging piece 9 are caught in the film transfer path, and the film transfer path is not affected. The film 5 can be smoothly transferred along the film.

Since the strip 7 overlaps the surface of the reader body 1, the strip 7 follows the bending of the reader body 1 when the reader body 1 changes the transfer direction at the turn portion. To do. Therefore, the curvature of the turn portion in the film transfer path can be reduced.

When releasing the connection of the film 5,
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 keeping the engagement released.

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

As described above, the pressing band 11 is attached to the strip 7.
By engaging with, it is possible to prevent the strip-shaped piece 7 from rising and improve the reliability of connection of the film 5.

[0029]

As described above, according to the present invention, by inserting the leading end portion of the film from the second insertion hole into the first insertion hole, the engaging piece is engaged with the engaging hole formed in the leading end portion of the film. Can be engaged, and when the film is pulled back after the engagement hole is engaged with the engagement piece, the tip of the engagement piece is moved to the first position.
Since the film is supported by the peripheral edge of the insertion hole and is prevented from coming off, the film can be connected to the leader very easily, and when the film is pushed in, the engagement between the engagement piece and the engagement hole is released. Therefore, disconnection is easy.

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

Further, a first insertion hole and a second insertion hole are formed in the sheet-shaped leader body, and a U-shaped cut is provided, and a strip-shaped piece formed inside the cut is formed.
Since it has a simple structure in which it is folded back by 0 °, it is possible to provide a reader that is easy to manufacture and low in cost.

Further, since the band-shaped piece is pressed by the pressing band, it is possible to prevent the band-shaped piece from rising, 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 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 reference numerals] 1 reader body 2 hole 3 first insertion hole 4 second insertion hole 5 film 6 notch 7 strip-shaped piece 8 engagement hole 9 engagement piece 10 long hole 11 presser band

Claims (3)

[Claims] 1. A flexible sheet-like reader body is provided with feed holes at equal intervals, and a first insertion hole and a second insertion hole into which a leading end portion of a film is inserted at a rear portion of the leader body in a transfer direction.
A U-shaped notch is formed on the front side of the first insertion hole provided at the front part in the leader transfer direction with a required distance from the insertion hole in the leader transfer direction, and a strip provided inside the notch. Fold back 180 ° and put the first piece on the tip of the strip.
A film transport leader having a front end supported by the peripheral edge of the first insertion hole across the insertion hole in the leader transfer direction and having an engagement piece engageable with the engagement hole provided at the front end of the film. . 2. The pressing band for engaging the upper surface of the band-shaped piece and preventing the band-shaped piece from rising up is provided between the bending position of the band-shaped piece and the first insertion hole. A leader for film transport. 3. A pair of elongated holes into which the strips can be inserted are formed between the bending position of the strips and the first insertion hole, and a holding band is formed between the elongated holes. The film transport leader described in 1.