JP3139218B2 - 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 a leader transport type automatic film developing machine, 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 formed of a synthetic resin sheet and has flexibility, and a hole a capable of engaging with a feed sprocket provided in the developing section is provided at an equal interval in a central portion in the width direction. Is formed.

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. And there is a danger that the film F will be exposed at the time of removal.

Therefore, the film F needs to be firmly connected to the reader L.

Therefore, conventionally, as shown in FIG. 11, a leader L and a film F are connected to each other by attaching a splice tape T.

[0007]

By the way, the connection of the film F using the splice tape T is performed in such a state that oil, dust, etc. at the tape application position are removed.
It is time-consuming because it is necessary to attach Further, in order to prevent the film F from coming off and to improve the transportability, it is necessary to use a splice tape T having a strong adhesive force.
There is a disadvantage that peeling of the splice tape T after the development processing of the film F is extremely difficult.

Further, the film F needs to be connected to the leader L at a predetermined position with high accuracy, and a special work table is required for the connection, and the splice tape T
Is disadvantageous because it cannot be reused.

The present invention has solved the above-mentioned conventional disadvantages,
It is a technical object to facilitate connection and disconnection between a leader and a film and to enable a film to be accurately connected to a predetermined position with respect to a reader without using a special work table.

[0010]

In order to solve the above-mentioned problems, according to the present invention, in a connecting structure of a leader and a film transported by the leading of the leader, an end of the film of the leader is connected. A sheet piece is attached to a portion to be moved, and an engaging claw is provided on the sheet piece in a direction in which the reader is conveyed. And a protection claw whose tip is extended, and an engagement hole with which the engagement claw is engageable is provided at the longitudinal end of the film.

Here, in order to facilitate the work of engaging the engaging claw with the engaging hole of the film, the sheet piece is made rectangular, and both sides of the sheet piece are fixed to the leader, and the sheet piece is placed between the sheet piece and the leader. It is preferable that a film insertion portion is provided on the base member, and a central portion of the leader is cut and raised toward the lower surface side, and an engagement claw facing the transfer direction of the leader is provided.

[0012]

According to the present invention having the above-described structure,
The film can be connected to the leader by engaging the engaging hole of the film with the engaging claw, and the engaging claw is engaged with the engaging hole of the film by the retaining claw that is engaged with the upper surface of the tip of the engaging claw. Can be prevented from coming off.

[0013]

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

FIGS. 1 to 7 show a first embodiment of the film connecting structure according to the present invention.

As shown in FIGS. 1 and 2, the reader 1 is formed of a synthetic resin sheet and has flexibility, and feed holes 2 are formed at equal intervals in the center in the width direction. .

The reader 1 is transferred in one direction by engagement of a sprocket provided in a film transfer path of the automatic film developing machine with a hole 2.

A pair of rectangular sheet pieces 3 are superimposed on both ends of the rear end of the reader 1 in the transport direction, and the sheet pieces 3
Are attached to the reader 1.

At the time of mounting the sheet piece 3, here, both sides of the sheet piece 3 are ultrasonically welded to the reader 1.
The attachment of the sheet piece 3 is not limited to this. By attaching both sides of the sheet piece 3, a film insertion portion 4 is formed between the sheet piece 3 and the reader 1, and the end of the film 10 can be inserted into the film insertion portion 4.

An engaging claw 5 is formed at the center of the sheet piece 3 by cutting and raising. The engaging claw 5 is cut and raised toward the lower surface of the sheet piece 3.

On the other hand, the leader 1 has a retaining claw 6 and a pair of protection claws 7 formed on both sides thereof by cutting and raising. The retaining claw 6 is raised on the upper surface side of the reader 1, and the distal end is engaged with the upper surface of the distal end of the engaging claw 5. On the other hand, the protection claw 7 is raised on the lower surface side of the reader 1, and the tip end extends to the lower surface side of the engagement claw 5.

An engaging hole 11 is formed at the longitudinal end of the film 10, and the engaging hole 11 can be engaged with the engaging claw 5.

The connecting structure shown in the first embodiment has the above-described structure.
As shown in FIG. 4, the end of the film 10 is inserted into the film insertion unit 4 with the end of the film 10 facing the film insertion unit 4.

When the leading end of the film 10 enters the lower surface of the engaging claw 5, the engaging claw 5 is pushed up by the leading end of the film 10 and is deformed upward, so that the engaging hole 11 faces the leading end of the engaging claw 5. When the film 10 is inserted to the position, the engagement claws 5 enter the engagement holes 11 as shown in FIG.

When the film 10 is pulled back from the state shown in FIG. 5, the engaging holes 11 are engaged with the engaging claws 5 as shown in FIG. 6, and the leader 1 and the film 10 are connected.

In the connection state of the reader 1 and the film 10,
Since the distal end of the retaining claw 6 is engaged with the upper surface of the distal end of the engaging claw 5, when the film 10 is pushed in, the distal end of the film 10 comes into contact with the base of the retaining claw 6, and by this contact, The film 10 is retained. At this time, the engaging hole 11 is disengaged from the engaging claw 5, but when the film 10 is pulled back, the engaging hole 11 is engaged with the engaging claw 5 again, and the connection between the leader 1 and the film 10 is released. Never.

In the developing process of the film 10, the film 10 is transported along the developing section in advance of the reader 1 while the film 10 is connected to the reader 1 as described above. At this time, the protection claw 7 extends in the direction opposite to the transfer direction of the reader 1, and the tip of the protection claw 7 is
Since there is no trouble that the tip of the engaging claw 5 is caught in the film transfer path,
The reader 1 and the film 10 can be smoothly transferred along the transfer path.

The film 10 is released from the connection with the reader 1 after the development processing. At the time of releasing the connection, the film 10 is pushed in, and as shown in FIG. 5, in a state where the engagement hole 11 is opposed to the tip of the engagement claw 5, as shown in FIG. Tilt.

Due to the relative inclination of the leader 1 and the film 10, a part of the inner peripheral edge of the engaging hole 11 pushes up the tip of the engaging claw 5. For this reason, the engaging claw 5 is deformed upward and the engaging hole 1
The connection between the reader 1 and the film 10 can be released by pulling the film 10 in a state where a part of the leading end of the film 1 is in contact with the upper surface of the film 10.

FIGS. 8 to 10 show a second embodiment of the film connecting structure according to the present invention. In this embodiment, the sheet piece 3 is fixed to the upper surface of the reader 1, and an engagement claw 5 is provided on one side of the sheet piece 3 so as to extend in the transfer direction of the reader 1.

On the other hand, in the reader 1, a protective claw 7 extending toward the lower surface of the engaging claw 5 is formed by cutting and erecting, and the upper surface of the tip of the engaging claw 5 is engaged on both sides of the base of the protective claw 7. A pair of possible retaining claws 6 are formed.

In the film connecting structure having the above structure, as shown in FIG. 9, the engaging hole 11 of the film 10 is engaged with the engaging claw 5, and as shown in FIG.
When the end of the film 10 is positioned on the lower surface of the engaging claw 5 by pulling back the zero, the distal end of the engaging claw 5 is deformed downward, and the distal end is engaged with the lower surface of the retaining claw 6. To connect the film 10 to the reader 1.

In the connected state of the film 10, since the retaining claw 6 is engaged with the upper surface of the distal end portion of the engaging claw 5, the engaging hole 11 of the film 10 does not come off from the engaging claw 5.

When the connection between the leader 1 and the film 10 is released, the engagement between the engaging claw 5 and the retaining claw 6 is released, and the film 10 is slid in the length direction of the engaging claw 5 to engage the engaging claw. 5 is disengaged from the engagement hole 11.

[0034]

As described above, in the film connecting structure according to the present invention, the engaging hole of the film is engaged with the engaging claw, so that the connecting and disconnecting of the leader and the film can be easily performed. In the connected state, the retaining claw is engaged with the upper surface of the distal end of the engaging claw, so that the film can be reliably held in the connected state, and there is no inconvenience that the film is detached from the reader. In addition, the film can be reliably transferred.

Further, since the tip of the protective claw faces the lower surface of the engaging claw, there is no trouble that the tip of the engaging claw is caught on the transfer path when the leader and the film are transferred.
The leader and the film can be smoothly transferred along the transfer path.

Further, since the engaging hole of the film is engaged with the engaging claw provided on the reader, the film can be accurately connected to a predetermined position of the reader without using a special work table.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a connection structure according to the present invention.

FIG. 2 is an enlarged perspective view showing a part of the above.

FIG. 3 is a perspective view showing a film connection state of the above.

FIG. 4 is a sectional view showing a state before the film is connected to the above.

FIG. 5 is a cross-sectional view showing a state in which the above film is being connected.

FIG. 6 is a cross-sectional view showing a film connection state of the above.

FIG. 7 is a plan view showing a state in which the connection of the film is released.

FIG. 8 is a perspective view showing a second embodiment of the film connection structure according to the present invention.

FIG. 9 is a cross-sectional view showing a state in which the above film is being connected.

FIG. 10 is a sectional view showing a film connection state of the above.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leader 3 Sheet piece 4 Film insertion part 5 Engagement claw 6 Retaining claw 7 Protective claw 10 Film 11 Engagement hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-158924 (JP, A) JP-A-4-368940 (JP, A) JP-A-62-35358 (JP, A) JP-A-4-35 177251 (JP, A) Jiko 11-6128 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03D 13/00 G03C 1/765 G03C 3/02

Claims (2)

(57) [Claims] In a connection structure of a leader and a film transported by a leader of the leader, a sheet piece is attached to a portion of the leader to which an end of the film is connected, and the sheet piece faces in the transport direction of the reader. An engaging claw is provided, and the leader is provided with a retaining claw that engages with the upper surface of the distal end of the engaging claw, and a protective claw whose distal end extends below the engaging claw. A connection structure between the reader and the film, wherein an engagement hole with which the engagement claw is engageable is provided. 2. The connecting structure of a reader and a film according to claim 1, wherein the sheet piece is rectangular, and both sides of the sheet piece are fixed to the reader to form a film insertion portion between the reader and the film. A connection structure between a leader and a film, wherein a central portion of the sheet piece is cut and raised toward a lower surface to form an engagement claw facing a transfer direction of the leader.