JP3203948B2 - Leader and film connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Generally, when an undeveloped film (hereinafter, referred to as a film) is developed by an automatic film developing machine of a leader transport type, as shown in FIG. L, and the film F is transported to the film developing section with the leader L leading.

Here, the leader L is made of a synthetic resin sheet and has flexibility, and a hole a capable of engaging with a feed sprocket provided in the film developing section is provided at the center in the width direction. It is formed at intervals.

In general, in an automatic film developing machine,
The film developing unit is provided with a film guide for guiding the movement of the film, and if the film is transported in a state where the film is released from the film guide, the film is damaged by contact with the film guide. Need to be accurately connected to a predetermined position.

When the film F comes off from the reader L during the developing process of the film F, the film F stops in the processing solution and the developing process cannot be performed, and it is extremely 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 at the time of removal.

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

[0007]

By the way, in connecting the film F using the splice tape T, a special work table is required for accurately attaching the film to a predetermined position, and the oil and the oil at the tape attaching position are required. 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 effort. In addition, 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 is disadvantageous in cost.

[0008] The present invention solves the above-mentioned conventional disadvantages,
Make it possible to accurately connect the film to the reader at the specified position without using a special work table, to facilitate the connection and disconnection of the reader and the film, and to dry the film after the development processing. Making it easy is a technical issue.

[0009]

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

[0010]

As described above, the engagement hole is provided in one of the leader and the film and the engagement piece is provided in the other, so that the film can be accurately positioned at a predetermined position of the reader by the engagement between the engagement hole and the engagement piece. Can be well connected.

[0011] Further, in the case where the developed film is dried by forming a large number of small holes in the reader,
Since the drying heat enters the overlapping portion between the leader and the film through the small holes, the overlapping portion between the reader and the film can be effectively dried.

[0012]

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

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

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

At the rear end of the reader 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 reader 1 as a symmetric line. A notch 7 is formed in the reader 1 behind each of the insertion holes 6.

The insertion hole 6 and the notch 7 are sized so that the connecting piece 4 of the film 3 can be inserted into the insertion hole 6 and the notch 7. Are provided.

Here, the distance L ₁ between the insertion hole 6 and the notch 7 is shown.
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.

The reader 1 has a number of small holes 9 formed between the insertion hole 6 and the notch 7.

In the state where the connecting piece 4 is inserted into the insertion hole 6 and the engaging hole 5 is 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 sides of the end of the film 3 into the notch 7 and facing the back side of the leader 1 to release the pressing of the film 3, as shown in FIG. And the film 3 can be connected.

In the connected state, the engaging piece 8 is engaged with the engaging hole 5, and the shoulders 4 'on both sides of the film 3 are engaged with the back surfaces on both sides of the cutout 7, so that the leader 1 And the film 3 are prevented from relatively moving in the length direction and the width direction of the film 3, and the connecting piece 4 at the leading end of the film 3 is prevented.
Is prevented from rising from the surface of the reader 1, and the engagement hole 5 is prevented from coming off from the engagement piece 8.

For this reason, the film 3 is held in a state of being extended in the length direction of the reader 1, and the film 3 is transferred to the preceding reader 1 satisfactorily when the film is transported along the developing path of the automatic film developing machine. Can be followed.

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

During the drying process of the film 3, since the reader 1 is provided with a number of small holes 9, hot air enters the overlapping portion of the reader 1 and the film 3 from the small holes 9. Therefore, even when the developing solution remains in the overlapping portion between the reader 1 and the film 3, the developing solution can be reliably removed, and the overlapping portion between 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 into an arc shape in the width direction to release the engagement between the shoulders 4 ′ on both sides of the film 3 and the backs on the backs on both sides of the notch 7, and then engage with the engagement piece 8. The engagement of the hole 5 is released.

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

On the other hand, the rear end of the reader 1 is provided with an engagement hole 13 into which the engagement piece 12 is engaged. A pair of narrow notches 14 are formed on the left and right, and a number of small holes 15 are provided between the notches 14.

Here, the engagement hole 13 has substantially the same shape as the engagement piece 12 and is slightly smaller than the engagement piece 12.

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

When connecting the film 3, as shown in FIG. 4, the engaging piece 12 is inserted into the engaging hole 13 while the film 3 is pressed in the width direction and deformed in an arc shape. The pressing in the width direction of the film 3 is released in a state in which both side portions of the edge face the back side of the reader 1.

In the connected state of the film 3, the outer peripheral portion of the engaging piece 12 engages with the peripheral edge of the engaging hole 13, and the shoulders 4 ′ on both sides of the film 3 are formed on both sides of the pair of cutouts 14. The engagement with the back surface prevents the leader 1 and the film 3 from relatively moving in both the length and width directions of the film.

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

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

When connecting the film 3, the film 3
Is pressed in the width direction to deform it into an arc shape, and both sides of the engagement piece 12 are inserted into a pair of engagement holes 13, and each engagement piece 12 faces the back side of the reader 1 in the width direction of the film 3. Is released. By releasing the pressing, the engaging piece 12 is engaged with the back surface of the reader 1 as shown in FIG. Does not relatively move in both the width direction and the length direction of the film 3 and does not bend.

FIGS. 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 reader 1
And a pair of engagement pieces 31, and a pair of engagement holes 32 with which the engagement pieces 31 are engaged are formed on the left and right sides of the front end of the film 3.

The cuts 30 extend in the direction of transport of the leader 1, and have a pair of central cuts 33 formed at intervals smaller than the width of the film 3, and extend outward from the rear end of each central cut 33 in the leader transport direction. Facing rear notch 34
And a front cut 35 facing outward from the leading end of the center cut 33 in the leader transport direction.

Here, the rear cutout 34 may be a linear one extending in a direction perpendicular to the central cutout 33. However, the rear cutout 34 is formed as an elongated hole for facilitating insertion of the end of the film 3, and is formed obliquely. It is good to be inclined outward. The dimension between the outer ends of the rear cut 34 is slightly larger than the width dimension of the film 3.

The front cut 35 regulates the amount of insertion of the film 3, and the dimension between the outer ends of the pair of front cuts 35 is smaller than the width of the film 3. The front notch 35 may be directed obliquely outward as shown in FIG.
May be oriented in a direction perpendicular to the direction.

The engagement piece 31 is provided between the rear cut 34 and the front cut 35. This engagement piece 31
It is bent toward the lower surface of the reader 1 and is inclined toward the transport direction of the reader 1.

Further, the reader 1 has a number of small holes 38 formed in a portion where the leading end of the film 3 overlaps.

Now, as shown in FIG. 8, the end of the film 3 is inserted into a pair of rear cuts 34,
Guide 3 provided between a pair of central cuts 33
6, both sides of the film 3 are moved along the upper surface of the film 3, and the film holding pieces 3 formed outside the center cut 33 are formed.
7 moves along the lower surface, and when the leading end of the film 3 passes below the engaging piece 31, the engaging piece 31 is deformed upward.

As shown in FIG. 9, the amount of insertion of the film 3 is regulated by the contact of the front notch 35 with the outer end.
The engaging piece 31 is deformed downward at a position where the engaging hole 32 faces the tip of the film 3, and the engaging hole 32 is engaged with the engaging piece 31 so that the film 3 is connected.

When the connection of the film 3 is released, the film 3 is pushed down to a position where the film 3 comes into contact with the outer end of the front cut 35 to release the engagement between the engagement piece 31 and the engagement hole 32 as shown in FIG. In this 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 while being shifted.

FIGS. 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 reader 1 in the conveyance direction, and the connecting pieces 42 provided on both sides of the sheet piece 41 are inserted into the cuts 40 to prevent the sheet piece 41 from coming off.
A film insertion part 43 for inserting the leading end of the film 3 is formed between the film insertion part 43 and the reader 1.

A pair of left and right engaging pieces 4 is
4 is cut and raised toward the lower surface of the sheet, each engaging piece 44 is inclined in the insertion direction of the film 3 to be inserted into the film insertion portion 43, and the leading end is inserted into a hole 45 formed in the reader 1.

A pair of cuts 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 with 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
Is inserted into the film insertion portion 43, and when the front end of the film 3 passes below the engagement piece 44, the engagement piece 44 is deformed upward, and as shown in FIG. 4
After the film 3 is inserted to a position where 6 passes the tip of the engagement piece 44, the film 3 is pulled back. When the engaging hole 46 is opposed to the engaging piece 44 by pulling back the film 3, the engaging piece 44 is deformed downward and engages with the engaging hole 46,
The engagement holds the film 3 in a connected state.

When the connection of the film 3 is released, the film 3 is pressed to release the engagement between the engagement hole 46 and the engagement piece 44, and then the insertion piece 48 shown by a chain line in FIG. The film 3 and the insertion piece 44 are pulled out together with the insertion hole 48 closing the engagement hole 46.

Alternatively, as in 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 cuts 40 formed in the reader 1 to attach the sheet piece 41, but both sides of the sheet piece 41 are adhered to the reader 1. Alternatively, it may be fixed by ultrasonic welding.

[0051]

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

Further, since a special work table is not required for connecting the films and the operation is such that the engaging pieces and the engaging holes are engaged with each other, it is easy to connect and disconnect the films.

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

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a connection structure between a reader and a film according to the present invention.

FIG. 2 is a perspective view showing a state in which a film is being connected.

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

FIG. 4 is a perspective view showing a state in which a film is being connected.

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

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

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

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

FIG. 9 is a cross-sectional view showing a state during disconnection of the above film.

FIG. 10 is a cross-sectional view showing a state in which the connection of the film is being released.

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

FIG. 12 is a sectional view taken along the line XII-XII in FIG. 11;

FIG. 13 is a sectional view showing a state in which the connection of the film is being released.

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 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 cut 31 engaging piece 32 engaging hole 33 central cut 34 rear cut 35 front cut 38 small hole 41 sheet piece 43 film insertion part 44 engaging piece 46 engaging hole 47 small hole

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03D 13/00 G03D 15/04

Claims (9)

(57) [Claims] In a coupling structure of a flexible leader and a film transported by the leader of the leader, an engagement hole is formed in one of a rear end of the leader in the transport direction and a distal end of the film in the transport direction. And an engaging piece engaged with the engaging hole is provided on the other side, and the reader has a plurality of small holes formed in a portion where the leading end of the film overlaps. Film connection structure. 2. The connecting structure between a reader and a film according to claim 1, wherein an engaging hole is provided in the film, and an inclined engaging piece is formed on the leader so as to extend in a direction in which the reader is transported. 3. A connecting piece having a width smaller than that of the film is provided at a leading end of the film, an engaging hole is formed in the connecting piece, and an insertion hole into which the connecting piece can be inserted is provided in a reader. 2. The connecting structure between a leader and a film according to claim 1, wherein an engagement piece engageable with said engagement hole is formed at an inner peripheral rear edge of said insertion hole. 4. A notch portion having a width substantially equal to the width of the connecting piece portion is provided behind an insertion hole formed in the leader, and shoulder portions on both sides of a leading end portion of the film are provided on both sides of the notch portion. 4. The connecting structure of a leader and a film according to claim 3, wherein the connecting member can be engaged. 5. An engaging piece is provided at a leading end of the film via a neck portion having a smaller width than 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 reader and a film according to claim 1, wherein an engaging hole capable of being provided is provided. 6. A pair of notches formed at intervals substantially equal in width to the neck portion are provided behind an engagement hole formed in the leader, and a pair of notches are formed on the outside rear surface of each notch. 6. The connection structure between a leader and a film according to claim 5, wherein shoulders on both sides of the leading end of the film can be engaged. 7. A connecting piece having a width smaller than that of the film is provided at a leading end of the film, and a pair of engaging pieces are formed at both leading ends of the connecting piece. 2. The connection structure between a leader and a film according to claim 1, wherein a pair of engagement holes with which the pieces are engageable are provided. 8. A pair of engaging holes are provided at the leading end of the film in the transfer direction, and a notch is formed at the rear end of the leader in the transfer direction, into which the leading end of the film is inserted. A pair of left and right linear center cuts extending in the transfer direction of the film and formed at a smaller interval than the width of the film, and front and rear cuts facing outward from the front and rear ends of the respective center cuts in the leader transfer direction. The connecting structure between a leader and a film according to claim 1, wherein an engaging piece engageable with the engaging hole is provided between the front cut and the rear cut. 9. An engaging hole is provided at a leading end of the film,
A sheet piece is superimposed on the rear end of the upper surface of the reader, and both sides of the sheet piece are connected to the reader to provide a film insertion portion between the reader and the sheet piece. 2. The connecting structure between a leader and a film according to claim 1, wherein an engaging piece of a cut-and-raised portion capable of being engaged and a number of small holes are formed.