JP3463591B2 - Film transport device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film transport device for transporting a film from a magazine in which a plurality of films are wound in a state where front and rear film ends are overlapped.

[0002]

2. Description of the Related Art Generally, for example, in a photographic processing apparatus for printing an image of a photographic film on photographic paper, a plurality of films may be continuously processed. At this time, a plurality of films are wound in a magazine with the front and rear film ends being overlapped with each other, and the films are sequentially drawn out from the magazine to perform a baking process.

As described above, since a plurality of films are wound in the magazine so that the end portions of the front and rear films overlap with each other, when printing is performed, double printing is prevented and each order is made. In order to manage the above, it is necessary to pull these films apart when the films are taken out from the magazine and processed.

Therefore, conventionally, a process of separating each film is performed during the transport of the film. As one example, the number of rotations of a plurality of drive rollers arranged in the transport route is set to the transport route. The film is made to be different before and after, and the film is separated by providing a speed difference by changing the transport speed, and the gap between the films is detected by the detection means, so that the processing for each film can be performed.

As another example, a detection tape such as a light-shielding tape is attached to both ends of the film in the longitudinal direction, and the tape is detected during the conveyance of the film to convey only the front film. In this way, each film can be processed.

[0006]

However, the rotational speeds of a plurality of drive rollers arranged in the conveying path are made different before and after the conveying path, the conveying speed is changed, and the film is separated by providing a speed difference. In the method of detecting the gap between the films, not only the control of the rotation speed of the drive roller becomes complicated, but also the perforations between the films may be caught when the films are separated, and the films may be damaged.

Further, when the detection tape is attached to the film, if the detection tape is attached to the screen portion of the film, printing cannot be performed. Therefore, care must be taken when attaching the detection tape. Then, there is a problem that it takes a long time to attach the film, and further, since the detection tape has to be peeled off when the film is returned to the user, there is a problem that the number of steps of the baking process increases.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a film transporting device which is capable of surely separating overlapping films by a simple operation without damaging the films. And

[0009]

In order to achieve the above-mentioned object, the invention as set forth in claim 1 is to transfer a film from a magazine in which a plurality of films are wound in a state where front and rear film ends are overlapped. In a film transporting device for transporting, a transport direction changing guide part having a curved guide surface and curving a film in the longitudinal direction along the guide surface to change the transport direction, and a guide of the transport direction changing guide part A movable guide having a curved surface along the surface, the curved surface being moved to a position along the guide surface of the guide portion for changing the conveying direction and a position separated from the guide surface, and the curved surface of the movable guide for changing the conveying direction. When the edges of the front and rear films that overlap with each other in the state of being separated from the guide surface of the guide section pass through the guide surface, the elastic return of the film causes the film to jump up against the guide surface. And configured to include a detecting means for detecting the end of at least one film of the film after.

The invention described in claim 2 is the same as claim 1.
In the invention described in (1), when the movable guide guides the front end of the film to the guide surface of the transport direction changing guide portion, the curved surface is along the guide surface of the transport direction changing guide portion, and the film is used for changing the transport direction. When the guide portion is curved along the guide surface, the curved surface is controlled to be separated from the guide surface.

Further, in the invention described in claim 3, in the invention described in claim 1 or 2, the movable guide is pivotally supported so as to swing around one end side in the circumferential direction of the curved surface. The curved surface can be separated from the guide surface of the conveying direction changing guide portion.

The invention according to claim 4 is the same as claim 1.
In the invention according to any one of claims 3 to 4, when the detection means detects the end portion of the film to be conveyed,
A structure in which the conveyance of the subsequent film is stopped, and the conveyance of the film is controlled so as to start the conveyance of the subsequent film when the overlap between the rear end of the front film and the front end of the rear film is eliminated. And

[0013]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a film transporting apparatus 1 to which the present invention is applied. The film transporting apparatus 1 includes a cassette mounting portion 3 for mounting a magazine cassette 21 and a magazine cassette 21. The pulled-out film F is inserted, and has an inlet-side guide portion 4 having an inlet-side passage 41 through which the film F is inserted, and a guide surface 51 positioned on the discharge side of the inlet-side guide portion 4 and curved. A transport direction changing guide portion 5 for changing the transport direction by curving the film F in the longitudinal direction along the guide surface 51, and a transport roller of the printer device which is located on the discharge side of the transport direction changing guide portion 5. An outlet side guide portion 6 connected to R is provided.

The magazine cassette 21 incorporates a magazine 2 in which a plurality of films F are wound in a state where the front and rear film ends are overlapped with each other. Each film is conveyed to a printer for printing.

In FIG. 1, reference numeral 81 is a cassette mounting portion 3
And a cover for covering the guide portions 4, 5, and 6.

The cassette mounting portion 3 is provided at the left end of the film transport device 1 in FIG.
Engagement portion 3 with which a pin 22 provided on one lower end side of 1 is engaged
1 and a magazine receiving portion 32 that receives the lower end of the magazine cassette. This magazine receiving part 3
2 includes a bent plate-shaped portion 32a that receives the bottom and side surfaces of the magazine cassette 21, and the plate-shaped portion 32a
Is a fixing panel 82 disposed in the film transport device 1.
In addition, it is swingably supported in the direction of arrow A in the figure via a torsion spring 32b.

The torsion spring 32b is fixed to the plate-shaped portion 32a so as to urge the plate-shaped portion 32a in a direction to push the magazine cassette 21 upward when the magazine cassette 21 is set in the magazine receiving portion 32. ing. When the magazine cassette 21 is set in the magazine receiving portion 32, the plate portion 32a is pressed downward in the arrow A against the biasing force of the torsion spring 32b.

Further, the cassette mounting portion 3 is provided with a lock mechanism 33 for fixing the set magazine cassette 21 to the cassette mounting portion 3.
Although not shown, 3 is a hook-shaped lock portion 3 which is hooked to a hook portion provided at the bottom of the magazine cassette 21.
3a and an arm shaft 33b for swinging the lock portion 33a.

By swinging the arm shaft 33b, the lock portion 33a is locked or unlocked from the magazine cassette 21.

While the pin 22 of the magazine cassette 21 is engaged with the engaging portion 31, the bottom portion of the cassette 21 is set in the magazine receiving portion 32, and the plate portion 32a is pressed downward, the lock mechanism 33 is provided. The lock portion 33a fixes the cassette 21 to the cassette mounting portion 3.

The cassette mounting portion 3 is provided with an interlock pin 34 and a limit switch 35,
The film transport apparatus 1 cannot be started unless the limit switch 35 is operated.

The interlock pin 34 is provided inside thereof with a limit pin 34b which is urged upward by a spring spring 34a to move up and down, and is provided at the bottom of the magazine cassette 21 when the magazine cassette 21 is mounted. A pressing pin (not shown) pushes the limit pin 34b downward in FIG.

In FIG. 1, below the limit pin 34b,
A limit arm 36 swingably supported is provided, and one end side of the limit arm 36 is pushed downward by the downward movement of the limit pin 34b. Further, the switch portion 35a of the limit switch 35 is brought into contact with the other end of the limit arm 36,
The downward movement of the limit arm 36 causes the switch portion 35a of the limit switch 35 to be turned on. The bottom of the limit switch 35 is covered with a limit cover 37.

Next, a transport mechanism for transporting the film F pulled out from the magazine cassette 21 will be described.

The above-mentioned inlet side guide portion 4 is provided in the conveying path.
And a guide portion 5 for changing the conveying direction and an outlet side guide portion 6 are continuously provided, and the conveying path has a conveying direction in the guide portion 5 for changing the conveying direction as shown in FIG. Has been changed.

An inlet side passage 41 through which the film F is inserted is formed in the inlet side guide portion 4, and an inlet opening portion 42 is provided at the inlet thereof as shown in FIGS. 1 to 3. .

The inlet opening portion 42 is swingably supported in a cantilever shape so as to open the inlet of the inlet side passage 41, and is biased and supported by the coil spring 43 in the direction of closing the inlet. By the way, when a trouble occurs during the film supply and the magazine cassette 21 has to be removed from the cassette mounting portion 3, if the film F remains in the magazine cassette 21 and the entrance side passage 41,
The film F is also lifted by lifting the magazine cassette 21. At this time, since the inlet opening portion 42 is swingably supported in a cantilever shape so that the inlet of the inlet side passage 41 is opened, the inlet opening portion 42 is lifted as the film F is lifted, and the film F is prevented from bending. You can escape. As a result, it is possible to prevent the film F from being forcibly applied to the entrance of the entrance-side passage 41 and being damaged.

Further, the entrance side guide portion 4 is provided with a first detection sensor 71 for detecting the front end of the film F in the middle of the entrance side passage 41. The first detection sensor 71
Is a light sensor having a light emitting portion 71a and a light receiving portion 71b.

Next, the conveyance direction changing guide portion 5 provided on the discharge side of the inlet side guide portion 4 will be described.

The transport direction changing guide portion 5 is composed of a drive roller 52 which is rotationally driven by a drive motor M provided in the film transport apparatus 1, and a curved guide surface formed on the outer periphery of the drive roller 52. The film F is arranged along the line 51. Therefore, by curving the film F in the longitudinal direction along the guide surface 51, the transport direction of the film can be changed. As shown in FIG. 3, it is preferable that the angle Θ formed by the film on the inlet side and the film on the outlet side is 120 degrees or less in order to change the transport direction. The radius of the drive roller 52 is preferably 20 mm or less.

On the film entrance side of the driving roller 52, there is provided a first pressing roller 53 which is pressed against the driving roller 52, and the film F is pressed by the first pressing roller 53 and the driving roller 52. I try to hold it.

Further, a movable guide 9 is provided at a position where the film F is curved in the longitudinal direction when the film F is being conveyed by the guide portion 5 for changing the conveying direction.

The movable guide 9 has a curved surface 91 along the guide surface 51 of the guide portion 5 for changing the conveying direction, and the curved surface 91 is positioned along the guide surface 51 of the guide portion 5 for changing the conveying direction. The position is changed to a separated position. That is, when the movable guide 9 guides the front end of the film F to the guide surface 51 of the transport direction changing guide portion 5, the curved surface 91 is moved along the guide surface 51 of the transport direction changing guide portion 5 to allow the film F to move. Guide part 5 for changing the conveying direction
When the curved surface is curved along the guide surface 51, the drive control is performed so as to separate the curved surface 91 from the guide surface 51.

More specifically, as shown in FIGS. 1 to 3, the movable guide 9 is pivotally supported by a fixing panel 82 so as to swing around one end side in the circumferential direction of the curved surface 91, and swings. Thus, the curved surface 91 can be arranged along the guide surface 51 of the conveyance direction changing guide portion 5 or can be separated from the guide surface 51.

Further, as shown in FIGS. 4 and 5, the movable guide 9 rotatably abuts on the swing support shaft 92 pivotally supported by the fixing panel 82 and the guide surface 51 of the drive roller 52. It has a roller 93.

A drive mechanism for the movable guide 9, that is, a mechanism for moving the curved surface 91 of the movable guide 9 along or away from the guide surface 51 of the guide portion 5 for changing the conveying direction will be described.

As shown in FIGS. 6 to 8, the movable guide 9 is operated by on / off control of the solenoid 94 so that the movable guide 9 can swing at the end of the swing support shaft 92. Link mechanism 9 interlocking with the arm 95 provided
It is operated by 0.

More specifically, the link mechanism 90 includes a first link plate 90a swingably connected to the movable iron piece 94a of the solenoid 94, and an L-shaped first link plate 90a swingably connected to the first link plate 90a. 2 link plate 90b, the second link plate 90
a third link plate 90c swingably connected to b,
Fourth link plate 9 swingably connected to the link plate 90c
0d, the fourth link plate 90d and a fifth link plate 90e swingably connected to the arm 95.

The movable iron piece 94a of the solenoid 94 is
When the solenoid 94 is turned off, a fixed iron piece (not shown) inside the solenoid 94 is shown as shown by a virtual line in FIG.
Is in a state of being pulled out to the outside by an elastic member such as a spring, and is controlled to be attracted inside the fixed iron piece by overcoming the biasing force of the spring by the magnetic force when the ON operation is performed.

When the solenoid 94 is turned off, the curved surface 91 of the movable guide 9 is separated from the guide surface 51 of the drive roller 52 and the solenoid 94 is turned on, as shown in FIG. When in motion,
As shown in FIG. 8, the curved surface 91 is configured to be along the guide surface 51 of the drive roller 52. It should be noted that one end of the fifth link plate 90e is fixed to the fixing panel 82 so that the curved surface 91 returns from the state along the guide surface 51 of the driving roller 52 to the state of being separated when the solenoid 94 is turned off. The return spring 90f is connected.

The drive roller 52 has a movable guide 9
When the curved surface 91 of the drive roller 52 is separated from the guide surface 51, an auxiliary extruding portion 54 that extrudes the film F along the guide surface 51 of the drive roller 52 outward in the radial direction is provided. It is provided with a plurality of rollers 54a that come into contact with each other and a spring (not shown) that urges the drive roller 52 outward in the radial direction. The auxiliary push-out portion 54 is attached to the movable guide 9 or the film F when the curved surface 91 of the movable guide 9 is along the guide surface 51 or when the film F is conveyed along the guide surface 51. When pushed, the auxiliary push-out portion 54 is positioned inside the drive roller 52.

When the curved surface 91 of the movable guide 9 is separated from the guide surface 51 and the end portion of the film F to be conveyed reaches the position where the auxiliary extrusion portion 54 is disposed, the auxiliary extrusion portion 54 is reached. By 54, the end portion of the film F is pushed outward in the radial direction of the drive roller 52.

By providing this auxiliary extrusion section 54,
Depending on the film F to be conveyed, a strong curl tendency is attached, and even if the film sticks to the drive roller 52 due to the curl tendency and the jumping of the end portion of the film F is reduced, the end portion of the film F is The second detection sensor 72 (detection means), which will be described later, can be flipped up to a position where it can be reliably detected.

When the end of the film F reaches the auxiliary extruding section 54 when the curved surface 91 of the movable guide 9 is separated from the guide surface 51, the auxiliary extruding section 54 is moved to the auxiliary extruding section 54 as shown in FIG. The state where the film F is projected from the guide surface 51 of the drive roller 52, one of the rollers 54a of the auxiliary extrusion unit 54 is pressed against the guide roller 55 shown in FIG. 1, and the film F is driven by the drive of the transport roller R of the printer device. The sheet is smoothly conveyed to the printer device through the outlet-side passage 61 of the outlet-side guide portion 6.

Further, in order to detect the end portion of the film F being conveyed, the curved surface 91 of the movable guide 9 is separated from the guide surface 51 of the conveying direction changing guide portion 5 in the conveying direction changing guide portion 5. In this state, the second detection sensor 72 (detection means) that detects the edge of the film is provided.

That is, the film F conveyed while being curved along the guide surface 51 is the curved surface 91 of the movable guide 9.
Is separated from the guide surface 51, the film F elastically returns to the straight position when the end portion of the film reaches the curved position. By utilizing the elastic return of the film, the film end portion is It detects the state of jumping up.

The second detection sensor 72 uses an optical sensor like the first detection sensor 71, and the light emitting unit 7
2a and a light receiving portion 72b, and a light emitting portion 72a and a light receiving portion 7
The second detection sensor 72 is installed so that the line connecting 2b and 2b passes through the position where the end of the film jumps up.

Then, in the film transporting apparatus 1 of the present invention, when the second detection sensor 72 detects the end portion of the transported film F, the transport of the succeeding film F is stopped and the film on the front side is stopped. The conveyance of the film F is controlled so that the conveyance of the subsequent film F is started when the overlap between the rear end of F and the front end of the rear film F is eliminated.

The film transport control will be specifically described. First, the magazine cassette 21 is fixed to the cassette mounting portion 3, the pins 22 of the magazine cassette 21 are engaged with the engaging portions 31, and the bottom of the cassette 21 is brought into contact with the magazine receiving portion 32, so that the magazine The cassette 21 is set by the guide of the receiving portion 32, and the cassette 21 is fixed to the cassette mounting portion 3 by the lock mechanism 33.

When the cassette 21 is fixed, the limit switch 35 is actuated and the film conveyance is started.

When the limit switch 35 is turned on, the drive motor M and the drive motor M2 are driven, and the drive roller 52 of the guide portion 5 for changing the conveying direction and the conveying roller R on the printer side are rotationally driven. Further, although not shown, the rotation of the drive roller 52 is transmitted to the supply roller 23 of the magazine cassette 21 via the transmission means, and the supply roller 23 is rotationally driven at substantially the same feed amount as the drive roller 52.
The magazine 2 is also rotated, and the front end of the film F is conveyed from the inside of the magazine cassette 21 to the entrance side guide section 4.

When the front end of the film F is detected by the first detection sensor 71, the solenoid 94 is turned on and the curved surface 91 of the movable guide 9 is positioned along the guide surface 51.

Therefore, the film F is conveyed along the guide surface 51 of the drive roller 52 while being guided by the curved surface 91 of the movable guide 9 by the rotational drive of the drive roller 52, and the exit side of the exit side guide portion 6 is conveyed. It is sent to the passage 61 and sent to the carrying roller R on the printer side.

Further, a third detection sensor 73 for detecting the edge of the film is provided on the exit side of the transport roller R. This third detection sensor 73 is an optical sensor like the first detection sensor 71. I am using.

Then, the front end of the film F reaches the transport roller R, and the end of the film F reaches the third detection sensor 73.
Then, the solenoid 94 is turned off, and the curved surface 91 of the movable guide 9 is positioned away from the guide surface 51.

When the rear end of the film F reaches the drive roller 52 by driving the drive roller 52 and the transport roller R on the printer side, the end of the film F rises from the guide surface 51 of the drive roller 52. Film F
Is detected by the second detection sensor 72.

When the rear end portion of the film F is detected by the second detection sensor 72, the drive motor M is stopped and the rotational drive of the drive roller 52 is stopped. By stopping the driving roller 52, the subsequent conveyance of the film F is stopped, and the second detection sensor 72 is also stopped.
The film F on the front side where the rear end of the film is detected by
It is directly conveyed by the conveyance roller R on the printer side.

As a result, the overlap between the rear end of the front film F and the front end of the rear film F is eliminated, and when the rear end of the front film F is no longer detected by the second detection sensor 72, the solenoid is released. The curved surface 91 of the movable guide 9 is changed to the guide surface 5 of the drive roller 52 by the signal of the ON operation to 94.
1, the drive motor M starts to drive, and the subsequent transport of the film F is started.

As described above, according to the embodiment, the conveying direction changing guide portion 5 having the curved guide surface 51, the movable guide 9 having the curved surface 91 along the guide surface 51, and the second detecting means as the detecting means. A sensor 72 is provided to convert the curved surface 91 of the movable guide 9 into the guide surface 51 of the guide portion 5 for changing the transport direction.
In contrast, it is configured to be in a state of being along or a state of being separated.

With this configuration, the curved surface 9 of the movable guide 9
1 is placed along the guide surface 51 of the transport direction changing guide portion 5 to allow the film F to be transported while being curved in the longitudinal direction along the guide surface 51 of the transport direction changing guide portion 5, Furthermore, by operating the curved surface 91 in a state of being separated from the guide surface 51, when the end portion of the film F is lifted from the guide surface 51,
It can be detected by the second detection sensor 72.

Therefore, since the edge of the film can be detected without attaching the detection tape to the film, the edge of the film can be easily detected without any complicated work or process. Moreover, when the edge of the film is detected, the edge of the film on the front side is separated from the edge of the film on the trailing side, so that the film can be separated without being damaged.

When the front end of the film F is guided to the guide surface 51 of the conveying direction changing guide portion 5, the curved surface 91 of the movable guide 9 is moved to the guide surface 51 of the conveying direction changing guide portion 5.
When the film F is curved along the guide surface 51 of the transport direction changing guide portion 5, the curved surface 91 is controlled so as to be separated from the guide surface 51. The edge of the film can be reliably lifted from the guide surface 51, and the edge of the film can be reliably detected.

Further, the movable guide 9 is pivotally supported so as to swing around one end side of the curved surface 91 in the circumferential direction,
The curved surface 91 is used as the guide surface 51 of the guide portion 5 for changing the transport direction.
Since the guide surface 51 can be opened to the outside when the curved surface 91 is separated from the guide surface 51, it is possible to check the state of the film positioned on the guide surface 51, Can be easily taken out.

When the second detection sensor 72 detects the end portion of the film F to be conveyed, the driving roller 52 of the guide portion 5 for changing the conveying direction is stopped and the conveyance of the subsequent film F is stopped. When the overlap between the trailing edge of the front film F and the leading edge of the succeeding film F is eliminated, the transport of the film is controlled so as to start the transport of the following film. The rear end of the side film and the front end of the rear side film can be easily separated.

Although the trailing edge of the film is detected in the above-described embodiment, the leading edge of the film may be detected to separate the preceding film from the following film.

In this case, in controlling the timing of separating the curved surface of the movable guide from the guide surface of the drive roller of the guide portion for changing the conveying direction, the front end of the film passes the guide surface of the drive roller to a certain distance. Another detecting means (fourth detecting sensor) for detecting the leading edge of the film is provided at the position where the film is conveyed.

The fourth detection sensor detects the fourth
The curved surface of the movable guide is placed along the guide surface of the drive roller until the film is detected by the detection sensor, and when the film is detected by the fourth detection sensor, the curved surface of the movable guide is guided by the drive roller. The movable guide is controlled to move away from the surface.

Further, the drive roller of the guide portion for changing the transport direction is controlled so that the rotation drive is stopped when the edge portion of the film is detected by the second detection sensor, and is rotated when it is not detected. .

By controlling as described above, since the curved surface of the movable guide is separated from the guide surface of the drive roller while the preceding film is detected by the fourth detection sensor, the following film is detected. When the front end is conveyed to the guide surface of the drive roller, the front end of the subsequent film is in a state of jumping up with respect to the guide surface, and the second detection sensor detects the front end of the subsequent film. By this detection, the driving roller is stopped and the conveyance of the subsequent film is stopped, the preceding film is conveyed as it is, and the preceding film and the succeeding film are separated from each other.

Then, when the preceding film cannot be detected by the fourth detection sensor, that is, when the trailing edge of the film passes the fourth detection sensor, the curved surface of the movable guide follows the guide surface of the drive roller. Driving in the direction, the leading edge of the following film is guided along the guide surface.

As a result, the front edge of the subsequent film is not detected by the second detection sensor, so that the drive roller is driven to start the conveyance of the subsequent film, and when this film is detected by the fourth detection sensor, The curved surface of the movable guide separates from the guide surface of the drive roller.

In the present invention, the optical sensor is used as the second detection sensor, but the sensor may be of any type, and if an ultrasonic sensor that does not affect the light is used, the undeveloped It can also be applied to films.

[0074]

According to the first aspect of the invention, the film conveying device has a curved guide surface, and the film is curved in the longitudinal direction along the guide surface to change the conveying direction. And a curved surface along the guide surface of the conveying direction changing guide portion, and the curved surface is repositioned to a position along or away from the guide surface of the conveying direction changing guide portion. When the movable guide and the curved surface of the movable guide are separated from the guide surface of the guide portion for changing the transport direction and the end portions of the front and rear films pass through the guide surface, elastic return of the film causes the guide surface to return. Since it is configured to include a detection means for detecting the edge of at least one film of the film before and after jumping up with respect to Even when the film is conveyed from the magazine in which the rum is wound up, the edge of the film can be detected without attaching the detection tape to the film, so that it is easy to perform without complicated operations or steps. The edge of the film can be detected. Moreover, when the edge of the film is detected, the edge of the film on the front side is separated from the edge of the film on the trailing side, so that the film can be separated without being damaged.

The invention described in claim 2 is the same as claim 1
In the invention described in (1), when the movable guide guides the front end of the film to the guide surface of the transport direction changing guide portion, the curved surface is along the guide surface of the transport direction changing guide portion, and the film is used for changing the transport direction. Since the curved surface is controlled so as to be separated from the guide surface when it is curved along the guide surface of the guide portion, the edge of the film can be reliably lifted from the guide surface, The end can be detected reliably.

Further, in the invention described in claim 3, in the invention described in claim 1 or 2, the movable guide is pivotally supported so as to swing about one end side in the circumferential direction of the curved surface. Since the curved surface can be separated from the guide surface of the conveying direction changing guide portion, when the curved surface is separated from the guide surface of the conveying direction changing guide portion, the guide surface is opened to the outside. The state of the film positioned on the guide surface can be checked and the film can be easily taken out.

The invention described in claim 4 is the same as claim 1
In the invention according to any one of claims 3 to 4, when the detection means detects the end portion of the film to be conveyed,
A structure in which the conveyance of the subsequent film is stopped, and the conveyance of the film is controlled so as to start the conveyance of the subsequent film when the overlap between the rear end of the front film and the front end of the rear film is eliminated. As a result, the film can be reliably separated.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a film transport device according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which a curved surface of a movable guide is along a guide surface of a guide portion for changing a conveying direction in the film conveying apparatus of the present invention.

FIG. 3 is an explanatory view showing a state in which the curved surface of the movable guide is separated from the guide surface of the guide portion for changing the conveying direction in the film conveying apparatus of the present invention.

FIG. 4 is a side view of the movable guide according to the embodiment of the present invention.

FIG. 5 is a top view of the movable guide according to the embodiment of the present invention.

FIG. 6 is a top view showing a solenoid that drives a movable guide according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of a link mechanism connected to a solenoid when the movable guide is separated from the guide surface according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram of a link mechanism connected to a solenoid when the movable guide according to the embodiment of the present invention is in a state along a guide surface.

[Explanation of symbols]

1 Film transport device 2 magazines 5 Guide section for changing the transport direction 5 Guide surface 72 Second detection sensor (detection means) 9 Movable guide 91 curved surface

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65H 23/182 B65H 23/26 G03B 27/32

Claims (4)

(57) [Claims] 1. A film transporting device for transporting a film from a magazine in which a plurality of films are wound in a state where front and rear film ends are overlapped with each other, the film having a curved guide surface, and the film extending along the guide surface. And a curved surface along the guide surface of the transport direction changing guide portion, the curved surface being the guide surface of the transport direction changing guide portion. to a movable guide that is repositioned to the position and away with along position, the movable guide curved surfaces of the front and rear have overlapping Oite the state of being spaced relative to the guide surface of the conveying direction changing guide portion of Fi
The elasticity of the film as the end of the rum passes over the guide surface.
Film before and after jumping up against the guide surface when returning
And a detection means for detecting the edge of at least one of the films. 2. The movable guide has a curved surface along the guide surface of the conveying direction changing guide portion when the front end of the film is guided to the guide surface of the conveying direction changing guide portion. The film transport device according to claim 1, wherein the film transport device is controlled so as to separate the curved surface from the guide surface when the curved surface is curved along the guide surface of the section. 3. The movable guide is pivotally supported so as to swing around one end side in the circumferential direction of the curved surface so that the curved surface can be separated from the guide surface of the guide portion for changing the conveying direction. The film transport device according to claim 1, wherein the film transport device is characterized in that: 4. When the end of the film to be conveyed is detected by the detecting means, the conveyance of the succeeding film is stopped, and the overlap between the rear end of the front film and the front end of the succeeding film is eliminated. The film transport apparatus according to claim 1, wherein the transport of the film is controlled so as to start the transport of the subsequent film when the film is transported.