JPH0973161A - Leader and structure for connecting this leader and film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leader having high reliability of connection and a structure for connecting this leader and film by providing this leader with projecting pieces crossing the first insertion hole existing on the front side of a transfer direction of a leader body in a leader transfer direction and supporting their front ends with the peripheral edge of the first insertion hole. SOLUTION: The rear part of the leader body 1 is provided with the first insertion hole 3 and the second insertion hole 4 on both sides of the hole 2 apart a spaced interval in the transfer direction of the leader body 1. Windows 7, 8 are formed at a sheet piece 6 in the positions facing the first insertion hole 3 and the second insertion hole 4 and the inner peripheries of the window 7 existing on the front side of the transfer direction of the leader body 1 is provided with a projecting pieces 9. The projecting pieces 9 are engaged with engaging holes 10 by inserting the front end of the film 5 into the first insertion hole 3 from the second insertion hole 4 and, therefore, the leader L1 and the film 5 are easily connected. The front ends of the projecting pieces 9 are supported by the peripheral edge of the first insertion hole 3 in this connecting state of the leader L1 and film 5 and, therefore, the downward deformation of the projecting pieces 9 is prevented and the film 5 is stably held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reader and a connecting structure for a leader and a film, and more particularly to a reader used for automatic film development and a connecting structure for the reader and the film.

[0002]

2. Description of the Related Art Generally, when a film is processed by a leader transport type automatic film developing apparatus, the process shown in FIG.
As shown in, the film F drawn from the cartridge P
Is connected to the leader L, and the leader L is preceded to transfer the film F to the film developing section.

Here, the leader L is formed of a synthetic resin sheet and has flexibility, and feed holes a capable of engaging with sprockets provided in the film developing section are provided at regular intervals.

When the film F is detached from the reader L during the development process of the film F, the film F is stopped in the processing solution and the development process cannot be performed, and it takes a lot of time to take out the film F. , There is a risk that the film F will be exposed when it is taken out. Therefore, the film F needs to be firmly connected to the reader L.

The leader L and the film F are generally connected by attaching the splice tape T, but it takes time and effort to attach the splice tape T and remove it after the developing process. Since it is necessary to accurately connect the film F to a predetermined position,
There is the inconvenience of requiring a special work table for splicing. Moreover, since the splice tape T 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. 12 and 13 show the connection structure, in which two cuts 41 are provided at the rear of the flexible sheet-like reader 40 in the leader transfer direction, and the tongue 42 formed between the cuts 41 is formed on the film 43. The neck portion 45 provided on the tongue 42 is inserted into the opening 44 provided at the tip end portion so as to engage with the side edge of the opening 44.

In the above connecting structure, since no splicing tape is required, it is economical, and since the tongue 42 faces rearward in the transfer direction of the leader 40, the tongue 42 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 42 is larger than the width dimension W _{2 of the} opening 44, the tongue 42 is bent in the width direction. The tongue 42 needs to be inserted into and removed from the opening 44 in the closed state.

Therefore, it is necessary to manually connect and disconnect the leader 40 and the film 43, and there is a problem that the connection and the disconnection cannot be automated.

Further, when the film is transported along the film path of the automatic film developing apparatus, the film 43 receives a tensile force at the turn portion of the film path. At this time, since the tongue 42 is directly subjected to the load, the tongue 42 may be deformed and come out of the opening 44, which causes a problem in connection reliability.

Further, the film 43 is formed on the neck portion 4 of the tongue 42.
Since the film 43 is swingable around 5, the film 43 meanders during transfer and comes into contact with the film path, which may damage the film 43.

An object of the present invention is to easily connect and disconnect the leader and the film, and to automate the connection and disconnection of the leader and the leader with high reliability of the connection, and the leader and the film. Is to provide a connection structure of.

[0014]

In order to solve the above-mentioned problems, according to the present invention, a flexible sheet-like reader body is provided with feed holes at equal intervals. A first insertion hole and a second insertion hole for inserting a film are formed at a rear portion in the transfer direction of the reader at a predetermined interval in the transfer direction of the leader body, and the first insertion hole located on the front side of the leader body in the transfer direction is formed. A projecting piece that traverses in the transfer direction is provided, the rear end of the projecting part located on the front side in the reader transfer direction is integrated with the reader body, and the tip is supported by the peripheral edge of the first insertion hole. .

Further, according to the present invention, in a connecting structure of a sheet-like leader in which feed holes are provided at equal intervals in a flexible sheet-like leader body, and a film transferred by preceding the leader, A first insertion hole and a second insertion hole for inserting a film are provided at a rear part of the leader body in the transfer direction at a predetermined interval in the leader transfer direction, and a first insertion hole located on the front side in the leader transfer direction is provided in the leader transfer direction. Is provided with a projecting piece that traverses the rear end of the projecting piece, the rear end of the projecting piece located on the front side in the leader transfer direction is integrated with the reader body, and the leading end is supported by the peripheral edge of the first insertion hole. A structure is provided in which an engaging hole is formed so that the projecting piece can be engaged, and the projecting piece is engaged with the engaging hole at the tip of the film inserted into the first inserting hole from the second inserting hole to connect the films. It is adopted.

Here, the protruding piece may be provided on the sheet piece adhered to the surface of the reader body. Alternatively, it may be integrally provided at the front edge of the first insertion hole provided in the leader body in the leader transfer direction. In this case, a sheet piece is adhered to the back surface of the reader body, and the tip portion of the projecting piece is received by the sheet piece.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS.

1 to 4 show a first embodiment of the present invention. As illustrated, the reader L ₁ includes a flexible reader body 1 formed of a synthetic resin sheet. Feeding holes 2 are formed in the leader body 1 at equal intervals, and the engagement of the sprockets with the holes 2 moves the leader L ₁ in one direction. A first insertion hole 3 and a second insertion hole 4 are provided at both sides of the linearly arranged hole 2 at the rear of the reader body 1 in the transfer direction, with a space in the transfer direction of the reader body 1.

The first insertion hole 3 and the second insertion hole 4 have a size into which the film 5 can be inserted, and the width dimension thereof is substantially equal to the width dimension of the film 5, and the film 5 is inserted into each of the insertion holes 3 and 4.
When both sides of the film 5 are
The film 5 comes into contact with the side edge of the film and the film 5 is prevented from swinging.

A sheet piece 6 having a size capable of covering the first insertion hole 3 and the second insertion hole 4 is formed on the surface of the reader body 1.
Are superposed on each other, and the sheet piece 6 is fixed to the leader L ₁ by means of adhesion or welding.

Windows 7 and 8 are formed in the sheet piece 6 at positions facing the first insertion hole 3 and the second insertion hole 4, and a projecting piece is formed on the inner periphery of the window 7 located on the front side of the leader body 1 in the transfer direction. 9 is provided.

The projecting piece 9 crosses the first insertion hole 3 and crosses the leader L.
_The sheet is oriented in the direction opposite to the transport direction of _{1, and} the front end thereof is fitted into a notch 11 provided on the rear side of the sheet piece 6 in the leader transport direction, and is supported by the peripheral edge of the first insertion hole 3.

An engaging hole 10 into which the projecting piece 9 can be engaged is provided at the tip of the film 5 connected to the leader L ₁ .

Here, it is preferable to provide two or more protrusions 9 and engagement holes 10 in order to accurately connect the film 5 to the leader L ₁ without tilting.

Now, from the window 8 of the sheet piece 6 to the second insertion hole 4
The leading end of the film 5 is inserted into the bottom of the leader body 1, and the leading end of the film 5 is inserted into the window 7
3 is inserted into the film 5 as shown in FIG.
It is pushed by the tip of and deforms upward. When the film 5 is inserted to the position where the engaging hole 10 faces the protruding piece 9, the protruding piece 9 enters the engaging hole 10 due to the restoring elasticity during deformation.
Then, when the film 5 is pulled back, the projecting piece 9 returns to the natural state, and the film 5 can be connected to the leader L ₁ as shown in FIG.

When the leader L ₁ and the film 5 are connected,
Since the tip portion of the projecting piece 9 is supported by the peripheral edge portion of the first insertion hole 3, the projecting piece 9 is prevented from being deformed downward, and the film 5
Is stably held in the connected state.

The film 5 is transferred to the film developing section and developed by the leading of the reader L ₁ . At this time, since the projecting piece 9 that holds the leader L ₁ and the film 5 in the connected state faces in the direction opposite to the transport direction of the leader L ₁ , there is no inconvenience that the projecting piece 9 gets caught in the transport path. Instead, the leader L ₁ and the film 5 can be smoothly transferred along the transfer path.

Both side edges of the film 5 have first insertion holes 3
Further, since it is in contact with both inner peripheral side edges of the second insertion hole 4 to prevent the film from swinging, the film 5 can be transferred without meandering, and the film 5 and the rear edge of the window 8 of the sheet piece 6, Since it is in contact with the front edge of the second insertion hole 4, when a tensile force acts on the film 5 at the turn portion in the film developing section, the tensile force is applied to the rear edge of the window 8 and the front edge of the second insertion hole 4. You can get it with.

Therefore, the projecting piece 9 is less likely to receive a load, and even if the projecting piece 9 is loaded, the tip of the projecting piece 9 is supported by the peripheral edge portion of the first insertion hole 3, so that the projecting piece 9 is supported. Is not deformed, and the inconvenience that the connection of the film 3 is released is extremely small.

When releasing the connection of the film 5, the film 5 is pushed from the second insertion hole 4 toward the first insertion hole 3, the projecting piece 9 is erected on the sheet piece 6, and the projecting piece 9 and the engaging hole 10 are formed. Is disengaged, the projecting piece 9 is held in the disengaged state, and the film 5 is pulled back.

As in the first embodiment, the reader body 1
The window 7 is formed in the sheet piece 6 fixed to the sheet piece 6, and the projecting piece 9 is continuously provided on the inner periphery of the window 7, so that the projecting piece 9 is formed into the sheet piece 6.
Since it is always kept flush with the upper surface of the projection, the projection 9 is less likely to be caught by a fingertip or the like as compared with the case where the projection itself is fixed to the reader body 1, and the projection 9 is prevented from being deformed. The effect can be raised.

5 and 6 show a second embodiment of the present invention. In this embodiment, a plurality of protrusions 9 are connected to the leading edge of the first insertion hole 3 in the leader transfer direction, and the tip of the protrusion 9 is fitted to the trailing edge of the first insertion hole 3 in the leader transfer direction. The notch 11a is provided.

A sheet piece 12 covering the notch 11a is fixed to the back surface of the reader body 1 by means of adhesive or the like, and the sheet piece 12 supports the tip of the projecting piece 9.

At the time of connecting the leader L ₁ and the film 5 having the above-mentioned structure, the tip of the film 5 is inserted into the second insertion hole 4 from the front side of the leader L ₁ as in the first embodiment. , The leading end of the film 5 projecting to the back side of the leader L ₁ is inserted into the first insertion hole 3 and the engagement hole 10 is fitted into the projecting piece 9.

Also in the second embodiment, since the projecting piece 9 is opposite to the transfer direction of the leader L ₁ , the projecting piece 9
Can be prevented from being caught in the transfer path.

Instead of fixing the sheet piece 12 as described above,
As shown in FIG. 7 (I), a U-shaped notch 13 is formed at the rear portion of the first insertion hole 3 in the leader transfer direction, and an inner portion of the notch 13 is bent to the back surface side of the reader body 1. The second insertion hole 4 is formed, and the bent piece 14 is attached to the leader L.
You may make it adhere to the back surface of ₁ and receive the front-end | tip part of the protrusion 9.

As in the first and second embodiments, by fitting the tip end portion of the projecting piece 9 into the notches 11 and 11a, the projecting piece 9 is moved in the transfer direction of the reader body 1. On the other hand, it is possible to prevent the film 5 from tilting in the left-right direction, and it is possible to more reliably hold the film 5 to the projecting piece 9 in the connected state.

FIG. 8 shows a third embodiment of the present invention. In this embodiment, the front and rear edges 15a and 15b of the second insertion hole 4 in the leader transfer direction are arcuate, and the notches 16 are provided at both ends of the front edge 15a.

Further, a ventilation hole 17 is provided at a position where the leading end of the film 5 of the reader body 1 overlaps.

Since the other structure is the same as that of the second embodiment described above, the same parts are designated by the same reference numerals and the description thereof will be omitted.

As shown in the third embodiment, when the front and rear edges 15a and 15b of the second insertion hole 4 are arcuate, the film 5 and the front and rear edges 15a and 15a are connected in the connected state of the film 5.
15b contact each other at two points. When the film 5 after development processing is dried by blowing hot air, the processing liquid rarely remains at the contact portion between the reader L ₁ and the film 5, and thus the drying property is high. It is possible to improve.

Also, when the notches 16 are provided at both ends of the front edge 15a, the front edge 15a and the film 5 are in contact with each other at two points, and the warm air passes through the notches 16, The drying property can be further improved.

Further, when the ventilation hole 17 is formed in the reader body 1, the contact area between the reader body 1 and the film 5 is reduced, and moreover, the air permeability of the contact portion between the reader body 1 and the film 5 is improved, so that the drying property is improved. It can be further improved. Further, since the contact portion is small, the film 5 is hard to be scratched.

FIG. 9 shows the outline of the splicing device for the film 5. This splicing device includes a lower film guide 20 including a plurality of plates 21 and a plurality of plates 23.
A film inversion passage 24 is formed between the upper film guides 22 and the leader L ₁ is formed on the lower film guides 20.
Is placed and positioned, the front end of the film 5 is fed from the second insertion hole 4 into the film reversing passage 24, and the film 5 is conveyed by the rotation of the pair of feed rollers 25 and 26 and inserted into the first insertion hole 3. Then, when it is inserted, the projecting piece 9 is elastically deformed upward, the film 5 is sent to a position where the engagement hole 10 faces the tip of the projecting piece 9, and the restoring elasticity of the projecting piece 9 causes
The projecting piece 9 is engaged with the engaging hole 10.

After the projection piece 9 is engaged with the engagement hole 10, the film upper guide 22 and one of the feed rollers 25 supported by the film upper guide 22 are moved by a distance larger than the width of the film 5. As the amount, the film 5 is moved in the width direction, and the film 5 is pulled out from the film lower guide 20 by the movement of the leader L _{1 in} the arrow direction.

By using the splicing device as described above, it is possible to automate the connection of the various readers L ₁ and the film 5 shown in the first to third embodiments.

FIG. 10 shows a film decoupling device. In this disconnecting device, the leader L ₁ in which the film 5 is spliced by the front feed roller 30 and the rear feed roller 31 is fed forward, and a first insertion hole is formed at the tip of a cutting tool 32 provided below the transfer path. After the leader L ₁ is fed to a position where it faces 3 and stopped (see FIG. 10 (I)), as shown in FIG. 10 (II), the rear feed roller 31
The film 5 alone is fed forward by the rotation of to form a slack in the film 5 between the first insertion hole 3 and the second insertion hole 4. Then, the separating tool 32 is swung upward, and the tip of the tool is moved to the first insertion hole 3 as shown in FIG. 10 (III).
The projection piece 9 is deformed upward by inserting it into the housing and the engagement between the projection piece 9 and the engagement hole 10 is released by the deformation.

After the engagement between the projecting piece 9 and the engaging hole 10 is released, the rear feed roller 31 is reversed to move the film 5 backward, and the leading end of the film 5 is pulled out from the first insertion hole 3 and the second insertion hole 4. After that, as shown in FIG. 10 (IV), the separating tool 32 is swung downward, and the leader L ₁ and the film 5 are discharged from the moving path by the rotation of the front feed roller 30 and the rear feed roller 31. I have to.

By using the decoupling device as described above, it is possible to automate the decoupling of the various readers L ₁ and the film 5 shown in the first to third embodiments.

[0050]

Since the present invention is constructed as described above,
The following effects are obtained.

By inserting the leading end of the film into the first insertion hole from the second insertion hole, the projecting piece engages with the engagement hole, so that the leader and the film can be easily connected and the connection and It is possible to automate the disconnection.

When a pulling force acts on the film during transfer of the leader to which the film is connected, the pulling force is received by the front and rear edges of the second insertion hole. Since the tip of the piece is supported by the peripheral edge of the first insertion hole, the bending of the protruding piece can be almost completely prevented. Therefore, the reader and the film can be securely held in the connected state, and a highly reliable connected state can be obtained.

By forming the front and rear edges of the second insertion hole in an arc shape, it is possible to prevent the treatment liquid from remaining during drying, and by forming the ventilation hole, the ventilation of the contact portion between the reader and the film can be prevented. And the drying property can be improved.

By making the width dimension of the first insertion hole and the second insertion hole substantially equal to the dimension of the film, it is possible to prevent the film from meandering when the leader moves.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

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

FIG. 3 is a sectional view showing a state in which the film is being connected.

FIG. 4 is an exploded perspective view showing a part of the reader and a sheet piece of the same.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is a sectional view of FIG. 5;

FIG. 7 shows another example of the same reader, (I) is a perspective view showing a state before the second insertion hole is formed, and (II) is a perspective view showing a state after the second insertion hole is formed.

8A and 8B show a third embodiment of the present invention, in which (I) is a perspective view of a reader and (II) is a perspective view with a film connected.

FIG. 9 is a schematic view of a film splicing device.

FIG. 10 shows a film decoupling device (I),
(II), (III), (IV) are diagrams showing the film decoupling operation in stages.

FIG. 11 is a perspective view showing a conventional film connection structure.

FIG. 12 is a front view showing another conventional film connection structure.

FIG. 13 is a sectional view taken along line XII-XII in FIG.

[Explanation of symbols]

 1 Leader Main Body 2 Hole 3 First Insertion Hole 4 Second Insertion Hole 5 Film 6 Sheet Piece 9 Projecting Piece 10 Engagement Hole 12 Sheet Piece 15a Front Edge 15b Rear Edge 16 Cutout 17 Air Vent

Claims (10)

[Claims] 1. A leader in which flexible sheet-like leader bodies are provided with feed holes at equal intervals, and a first insertion hole and a second insertion hole for inserting a film are provided at the rear portion of the leader body in the transfer direction. Are formed at a required interval in the transfer direction of the leader body, and a projecting piece that traverses the first insertion hole located on the front side in the transfer direction of the leader body in the reader transfer direction is provided. A reader characterized in that a rear end portion located is integrated with a reader body, and a front end portion is supported by a peripheral portion of the first insertion hole. 2. A sheet piece covering the first insertion hole is fixed to the surface of the reader body, and a window into which a film can be inserted is provided at a position of the sheet piece facing the first insertion hole, and the reader of the window. The projecting piece that traverses the first insertion hole in the leader transfer direction is continuously provided at the front edge in the transfer direction, and the tip end portion of the projecting piece is supported by the peripheral edge portion of the first insertion hole. leader. 3. The projection piece is continuously provided at a front edge of the first insertion hole in the leader movement direction, and a rear portion of the projection piece in the leader movement direction is supported by a sheet piece fixed to one surface of a leader body. The reader according to claim 1, wherein: 4. The reader according to claim 1, wherein the front and rear edges of the second insertion hole in the leader transfer direction are arcuate. 5. The vent hole is formed at a position where the leading end portion of the film of the reader body overlaps.
5. The reader according to any one of 1 to 4. 6. The reader according to claim 1, wherein the width dimensions of the first insertion hole and the second insertion hole are substantially equal to the width dimension of the film. 7. A transfer structure of a flexible sheet-shaped leader body, comprising a sheet-shaped leader in which feed holes are provided at equal intervals, and a film transferred by preceding the leader. A first insertion hole and a second insertion hole for inserting a film are provided at a rear portion in the direction with a required interval in the leader transfer direction, and a projecting piece that traverses the first insertion hole located on the front side in the leader transfer direction in the leader transfer direction is provided. A rear end portion of the protruding piece, which is located on the front side in the leader transfer direction, is integrated with the reader body, and the leading end portion is supported by the peripheral edge portion of the first insertion hole, and the protruding piece is engaged with the leading end portion of the film. A leader characterized in that a mating engagement hole is provided, and a projection piece is engaged with the engagement hole at the tip of the film inserted from the second insertion hole into the first insertion hole to connect the film. Film connection structure. 8. The leader-film connection structure according to claim 7, wherein the front and rear edges of the second insertion hole in the leader transfer direction are arcuate. 9. The vent hole is formed at a position where the leading end portion of the film of the reader body overlaps.
Alternatively, the connecting structure of the reader and the film described in 8 above. 10. The leader and film connection according to claim 7, wherein the width dimensions of the first insertion hole and the second insertion hole are substantially equal to the width dimension of the film. Construction.