JPH07295189A - Connection structure of leader and film - Google Patents

Abstract

(57) [Summary] [Purpose] The film can be accurately and easily connected to the predetermined position of the reader, and when the film after development processing is dried, the overlapping part of the reader and film is effectively dried. A connection structure of a leader and a film is provided. An insertion hole 6 is formed at a rear end portion of the leader 1 in the transfer direction, and an engagement piece 8 is provided on an inner circumference of the insertion hole 6. A connecting piece 4 is formed at the leading end of the film 3, an engaging hole 5 is provided in the connecting piece 4, and the engaging hole 5 is engaged with the engaging piece 8 so that the reader 1
And the film 3 are connected. A large number of small holes 9 are formed in the leader 1 in the portion where the film 3 overlaps, and when the film 3 after the development processing is dried, the heat of drying is circulated from the small holes 9 to the overlapped portion of the film 3. Then, the overlapping portion of the reader 1 and the film 3 is dried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a leader and an undeveloped film.

[0002]

2. Description of the Related Art Generally, when developing an undeveloped film (hereinafter referred to as a film) by a leader transport type film automatic developing machine, as shown in FIG. 14, the leading end of the film F drawn from the cartridge P is a leader. The film F is connected to L and the leader L is moved ahead to transfer the film F to the film developing section.

Here, the leader L is made of a synthetic resin sheet and has flexibility, and a hole a which can be engaged with the feed sprocket provided in the film developing portion is formed in the center portion in the width direction thereof. It is formed at intervals.

Generally, in an automatic film developing machine,
The film developing section is provided with a film guide for guiding the movement of the film, and if the film is transferred from the film guide when the film is transferred, the film is scratched by contact with the film guide. It is necessary to accurately connect it to a predetermined position.

When the film F is removed 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 is very troublesome to take out the stopped film F. Therefore, the film F needs to be firmly connected to the reader L because there is a risk that the film F is exposed to light when taken out.

Therefore, conventionally, as shown in FIG. 14, the leader L and the film F are connected to each other by attaching the splice tape T.

[0007]

By the way, in the connection of the film F using the splice tape T, a special workbench is required for accurately attaching the film at a predetermined position, and the oil content at the tape attaching position is Since it is necessary to attach the splice tape T in a state where dust and the like are removed, there is an inconvenience that it takes time and labor. Further, since it is necessary to use a splice tape T having a strong adhesive force in order to prevent the film F from coming off and to improve the transportability, it is extremely difficult to peel off the splice tape T after the development processing of the film F. Since the splice tape T cannot be reused, it has a cost disadvantage.

The present invention solves the above-mentioned conventional inconveniences,
To enable the film to be accurately connected to the leader at a predetermined position without using a special workbench, to facilitate the connection and disconnection of the leader and the film, and to dry the film after development processing. Making it easy is a technical issue.

[0009]

In order to solve the above-mentioned problems, in the present invention, in a connecting structure of a flexible leader and a film which is transported by preceding the leader, the transport direction of the leader is set. Forming an engagement hole in either one of the rear end and the leading end of the film in the transfer direction,
On the other hand, an engaging piece to be engaged with the engaging hole is provided, and a large number of small holes are formed in the leader at a portion where the leading end portion of the film overlaps.

[0010]

As described above, since the engaging hole is provided in one of the leader and the film and the engaging piece is provided in the other, the film is accurately positioned at the predetermined position of the leader by the engagement of the engaging hole and the engaging piece. Can be well connected.

When the developed film is dried by forming a large number of small holes in the leader,
Since the drying heat enters the overlapping portion of the leader and the film through the small holes, the overlapping portion of the leader and the film can be effectively dried.

[0012]

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

1 and 2 show a first embodiment of a connecting structure of a leader and a film according to the present invention. The leader 1 is made of a synthetic resin sheet and has flexibility, and feed holes 2 are formed at equal intervals in the center portion in the width direction thereof.

A connecting piece 4 having a width smaller than that of the film 3 is provided at the leading end of the film 3 which is conveyed by the leader 1. Two engaging holes 5 are formed on the left and right sides of the connecting piece 4.

At the rear end of the leader 1 in the transfer direction, a pair of insertion holes 6 are provided on the left and right with the width center line of the leader 1 as a symmetry line. Further, the leader 1 is formed with a cutout portion 7 behind each of the insertion holes 6.

The insertion hole 6 and the cutout portion 7 are sized so that the connecting piece portion 4 of the film 3 can be inserted therein, and a pair of engagement holes 5 of the film 3 can be engaged with the inner peripheral rear edge of the insertion hole 6. Is provided with the engaging piece 8.

Here, the distance L ₁ between the insertion hole 6 and the notch 7
Is approximately equal to the length L ₂ between the shoulders 4 ′ on both sides of the leading end of the film 3 and the leading edge of the engaging hole 5.

A large number of small holes 9 are formed in the leader 1 between the insertion hole 6 and the notch 7.

Now, with the connecting piece 4 inserted in the insertion hole 6 and the engaging hole 5 engaged with the engaging piece 8, the film 3 is pressed in the width direction as shown in FIG. By deforming the film 3 in an arc shape, inserting both ends of the film 3 into the notches 7 and releasing the pressing of the film 3 while facing the back side of the reader 1, as shown in FIG. And the film 3 can be connected.

In the connected state, the engaging pieces 8 are engaged with the engaging holes 5, and the shoulder portions 4'on both sides of the film 3 are engaged with the back surfaces on both sides of the cutout portion 7, so that the leader 1 The film 3 and the film 3 are prevented from moving relative to each other in the length direction and the width direction of the film 3, and the connecting piece 4 at the tip of the film 3 is prevented.
Is prevented from rising from the surface of the leader 1, and the engagement hole 5 is prevented from being disengaged from the engagement piece 8.

Therefore, the film 3 is held in a state of being extended in the length direction of the leader 1, and the film 3 is satisfactorily transferred to the preceding leader 1 at the time of transferring the film along the developing path of the automatic film developing machine. Can be followed.

Generally, in an automatic film developing machine,
A drying unit is provided adjacent to the film developing unit, and the film 3 after the developing process is dried by blowing hot air in the drying unit.

When the film 3 is dried, the reader 1 is provided with a large number of small holes 9. Therefore, hot air enters from the small holes 9 into the overlapping portion of the leader 1 and the film 3. Therefore, even if the developing solution remains in the overlapping portion of the reader 1 and the film 3, the developing solution can be surely removed, and the overlapping portion of the reader 1 and the film 3 is effectively dried. be able to.

The film 3 after development and drying is removed from the reader 1 and printed. When removing the film 3, the film 3 is deformed in an arc shape in the width direction to release the engagement between the both side shoulder portions 4 ′ of the film 3 and the back surfaces on both side rear surfaces of the cutout portion 7, and then the engagement piece 8 is engaged. The engagement of the dowel hole 5 is released.

FIGS. 3 and 4 show a second embodiment of the connecting structure according to the present invention. In this example, film 3
An engaging piece 12 having an arcuate outer periphery is continuously provided to the front end portion of the through a neck portion 11 having a width smaller than that of the film 3.

On the other hand, the rear end portion of the leader 1 is provided with an engagement hole 13 with which the engagement piece 12 is engaged, and the rear end edge of the leader 1 in the transfer direction is at the rear position of the engagement hole 13. A pair of narrow cutouts 14 are formed on the left and right, and a large number of small holes 15 are provided between the cutouts 14.

Here, the engagement hole 13 has substantially the same shape as the engagement piece 12, and has a size slightly smaller than that of the engagement piece 12.

The distance L ₃ between the outer edges of the pair of notches 14 is smaller than the width W ₁ of the film 3.

At the time of connecting the films 3, as shown in FIG. 4, the engaging pieces 12 are inserted into the engaging holes 13 in a state where the film 3 is pressed in the width direction and deformed into an arc shape, and the film 3 is connected. The pressing of the film 3 in the width direction is released in a state where both side edges of the film 3 face the back side of the leader 1.

In the connected state of the film 3, the outer peripheral portion of the engaging piece 12 engages with the peripheral edge portion of the engaging hole 13, and the shoulder portions 4 ′ on both sides of the film 3 have both side portions of the pair of cutout portions 14. By engaging with the back surface, the engagement prevents the leader 1 and the film 3 from moving relatively in both the length direction and the width direction of the film.

FIG. 5 shows a third embodiment of the connecting structure according to the present invention. In this embodiment, a connecting piece portion 21 having a width smaller than that of the film 3 is provided at the leading end portion of the film 3, and a pair of engaging pieces 22 are provided on both sides of the connecting piece portion 21. A pair of engagement holes 23 with which 22 is engaged
Are formed on the left and right sides, and the interval L ₄ between the inner edges of the pair of engagement holes 23 is made substantially equal to the width dimension W ₂ of the connecting piece portion 21.

Further, the reader 1 is formed with a large number of small holes 24 in the portion where the film 3 overlaps.

When connecting the films 3, the films 3
Are deformed in an arc shape by pressing in the width direction, the both side portions of the engagement pieces 12 are inserted into the pair of engagement holes 13, and each engagement piece 12 faces the back side of the leader 1 in the width direction of the film 3. Release the pressure of. By releasing the pressing force, the engagement piece 12 is held in a state of engaging with the back surface of the leader 1 and the engagement piece 12 with the engagement hole 13 as shown in FIG. Means that the film 3 does not relatively move in both the width direction and the length direction and does not bend.

6 to 10 show a fourth embodiment of the film connecting structure according to the present invention. In this embodiment, the notch 30 into which the leading end of the film 3 is inserted into the leader 1
And a pair of engagement pieces 31 are provided, and a pair of engagement holes 32 with which the engagement pieces 31 are engaged are formed on the left and right ends of the film 3.

The notches 30 extend in the transfer direction of the leader 1 and are formed with a pair of central notches 33 formed at intervals smaller than the width dimension of the film 3 and outwardly from the rear end of each central notch 33 in the leader transfer direction. Rear notch 34 facing
And a front notch 35 facing outward from the leading end of the central notch 33 in the leader transfer direction.

Here, the rear notch 34 may be a linear one extending in a direction perpendicular to the central notch 33, but it is a long hole for facilitating insertion of the end portion of the film 3 and is oblique. It is better to incline toward the outside. The dimension between the outer ends of the rear cut 34 is slightly larger than the width dimension of the film 3.

The front notch 35 regulates the insertion amount of the film 3, and the dimension between the outer ends of the pair of front notches 35 is smaller than the width dimension of the film 3. The front notch 35 may be oriented diagonally outward, as shown in FIG. 6, or the central notch 33.
It may be oriented in a direction orthogonal to.

The engagement piece 31 is provided between the rear notch 34 and the front notch 35. This engaging piece 31 is
It is bent toward the lower surface of the leader 1 and inclined toward the conveyance direction of the leader 1.

Further, the leader 1 is provided with a large number of small holes 38 at the portion where the leading end portion of the film 3 overlaps.

Now, as shown in FIG. 8, by inserting the end portions of the film 3 into the pair of rear notches 34, the film 3
Lower guide 3 provided between the pair of central cuts 33
When the film 3 is moved along the upper surface of the film 6, both side parts of the film 3 are formed on the outside of the central cut 33 and the film pressing piece 3 is formed.
When the leading end of the film 3 moves below the engaging piece 31, the engaging piece 31 is deformed upward when it moves along the lower surface of 7.

As shown in FIG. 9, the insertion amount of the film 3 is regulated by the contact of the front notch 35 with the outer end, and when the film 3 is pulled back from that state, the engaging piece 31
The engaging piece 31 is deformed downward at a position where the engaging hole 32 faces the tip of the engaging hole 32, and the engaging hole 32 engages with the engaging piece 31 to bring the film 3 into a connected state.

At the time of releasing the connection of the film 3, the film 3 is pushed to a position where it abuts against the outer end of the front notch 35 to release the engagement between the engaging piece 31 and the engaging hole 32 as shown in FIG. In that state, the leader 1 and the film 3 are relatively inclined on a plane including the leader 1, and the engaging piece 31 and the engaging hole 32 are positioned in the width direction of the film 3 as shown in FIG. The film 3 is pulled out in the shifted state.

11 to 13 show a fifth embodiment of the film connecting structure according to the present invention. In this example,
A pair of left and right cuts 40 are formed at the rear end of the leader 1 in the conveyance direction, and connecting pieces 42 provided on both sides of the sheet piece 41 are inserted through the cuts 40 to prevent the sheet piece 41 from coming off.
A film insertion portion 43 for inserting the front end portion of the film 3 is formed between the leader 1 and the leader 1.

Further, a pair of left and right engaging pieces 4 are attached to the sheet piece 41.
4 is cut and raised toward the lower surface of the seat, each engagement piece 44 is inclined in the insertion direction of the film 3 inserted into the film insertion portion 43, and the tip end thereof is inserted into the hole 45 formed in the leader 1.

A pair of notches 40 in the reader 1
A large number of small holes 47 are formed in the space and the sheet piece 41.

On the other hand, a pair of engaging holes 46 into which the engaging pieces 44 can be engaged are provided at the leading end of the film 3.

When connecting the film 3, the film 3
When the front end of the film 3 is inserted into the film insertion portion 43 and the front end of the film 3 passes below the engaging piece 44, the engaging piece 44 is deformed upward, and as shown in FIG. Four
After the film 3 is inserted to the position where 6 passes the tip of the engaging piece 44, the film 3 is pulled back. When the engaging hole 46 faces the engaging piece 44 by pulling back the film 3, the engaging piece 44 deforms downward and engages with the engaging hole 46,
The engagement holds the film 3 in the connected state.

When the film 3 is released from the connection, the film 3 is pushed to release the engagement between the engagement hole 46 and the engagement piece 44, and then the insertion piece 48 shown by the chain line in FIG. 13 is attached to the film 3 and the sheet piece 41. The film 3 and the insertion piece 44 are pulled out together with the insertion hole 48 closed by the insertion piece 48.

Alternatively, similarly to the case shown in FIG. 10, the film 3 is pulled out while the leader 1 and the film 3 are relatively inclined and the positions of the engaging hole 46 and the engaging piece 44 are shifted.

In FIG. 11, the connecting pieces 42 on both sides of the sheet piece 41 are inserted into the notches 40 formed in the leader 1 to attach the sheet piece 41, but both sides of the sheet piece 41 are bonded to the leader 1. Alternatively, it may be fixed by ultrasonic welding.

[0051]

As described above, in the film connecting structure according to the present invention, since the engaging hole can be provided in either the leader or the film and the engaging piece can be formed in the other, the film can be provided to the leader. Can be accurately connected to a predetermined position.

Further, since a special workbench is not required for connecting the films, and since the work is to engage the engaging pieces with the engaging holes, the film can be easily connected and released.

Furthermore, since a large number of small holes are formed in the portion where the film of the leader overlaps, when the film after development processing is dried, the drying heat flows from the small holes to the overlapping portion of the leader and the film. Therefore, the overlapping portion of the leader and the film can be effectively dried.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a connecting structure of a leader and a film according to the present invention.

FIG. 2 is a perspective view showing a film being connected.

FIG. 3 is a perspective view showing a second embodiment of the film connecting structure according to the present invention.

FIG. 4 is a perspective view showing a film being connected.

FIG. 5 is a perspective view showing a third embodiment of the film connecting structure according to the present invention.

FIG. 6 is a perspective view showing a fourth embodiment of the film connecting structure according to the present invention.

FIG. 7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a perspective view showing a connected state of the above film.

FIG. 9 is a cross-sectional view showing the process of releasing the connection of the above films.

FIG. 10 is a cross-sectional view showing a state in which the film is being uncoupled from the same as above.

FIG. 11 is a perspective view showing a fifth embodiment of the film connecting structure according to the present invention.

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

FIG. 13 is a cross-sectional view showing a state in which the film is being uncoupled from the same as above.

FIG. 14 is a perspective view showing a conventional film connection structure.

[Explanation of symbols]

 1 leader 3 film 5 engaging hole 8 engaging piece 9 small hole 12 engaging piece 13 engaging hole 15 small hole 22 engaging piece 23 engaging hole 24 small hole 30 notch 31 engaging piece 32 engaging hole 33 center notch 34 Rear notch 35 Front notch 38 Small hole 41 Sheet piece 43 Film insertion part 44 Engaging piece 46 Engaging hole 47 Small hole

Claims (9)

[Claims] 1. In a connecting structure of a flexible leader and a film to be transported by preceding the leader, an engaging hole is provided at either a rear end of the leader in the transport direction or a leading end of the film in the transport direction. And a plurality of small holes are formed in the leader at the portion where the leading ends of the films overlap each other. Film connection structure. 2. The connecting structure for a leader and a film according to claim 1, wherein an engaging hole is provided in the film, and an inclined engaging piece extending in the transfer direction of the leader is formed in the leader. 3. A leading end portion of the film is provided with a connecting piece portion having a width smaller than that of the film, an engaging hole is formed in the connecting piece portion, and a leader is provided with an insertion hole into which the connecting piece portion can be inserted. The leader-film connection structure according to claim 1, wherein an engagement piece engageable with the engagement hole is formed at a rear end edge of an inner periphery of the insertion hole. 4. A notch portion having substantially the same width dimension as that of the connecting piece portion is provided at the rear of the insertion hole formed in the leader, and shoulder portions on both sides of the leading end portion of the film with respect to rear surfaces of both side portions of the notch portion. The connection structure of the leader and the film according to claim 3, wherein the connection is made possible. 5. An engaging piece is provided at the leading end of the film via a neck portion having a width smaller than that of the film, and the engaging piece is inserted into the leader by deforming the engaging piece in the width direction. The connecting structure for a leader and a film according to claim 1, wherein an engaging hole capable of being formed is provided. 6. A pair of notches formed at the rear of the engagement hole formed in the leader at intervals having a width dimension substantially equal to that of the neck portion, and with respect to the rear surface of the outer side of each notch. 6. The leader-film connection structure according to claim 5, wherein the shoulder portions on both sides of the leading end portion of the film can be engaged with each other. 7. A connecting piece portion having a width smaller than that of the film is provided at a leading end portion of the film, and a pair of engaging pieces are formed at both leading end portions of the connecting piece portion. The connecting structure for a leader and a film according to claim 1, wherein a pair of engaging holes are provided so that one of the portions can engage with each other. 8. A pair of engagement holes is provided at the leading end of the film in the transfer direction, and a cut is formed at the rear end of the leader in the transfer direction, the notch being inserted into the leader. A pair of left and right straight center cuts that are formed at a distance narrower than the width dimension of the film, and front and rear cuts that extend outward from the front and rear ends of the center cut in the leader transfer direction. The leader and film connection structure according to claim 1, further comprising: an engaging piece that is engageable with the engaging hole between the front notch and the rear notch. 9. An engagement hole is provided at a tip portion of the film,
A sheet piece is superposed on the rear end portion of the upper surface of the leader, and both side portions of the sheet piece are connected to the leader to provide a film insertion portion between the leader and the sheet piece, and the sheet piece with respect to the engaging hole. The leader-film connecting structure according to claim 1, wherein a cut-and-raised engaging piece capable of engaging and a plurality of small holes are formed.