JPH07209683A - Film conveyance device - Google Patents

Abstract

PURPOSE:To decrease the number of components of the film conveyance device which is applied to a camera and a film image input device. CONSTITUTION:A cylindrical space 52 is formed at a film take-up part 50 and a photographic film F which is sent out of a capstan 16 is sent in the space 52 with the sending-out force from the entrance exit of the film take-up part 50 through a passage. The photographic film F which is sent in the space 52 is wound in the space 52 along the curl direction of the photographic film F while having both the end parts guided by the small-diameter part of the space 52. Then once the front end of the photographic film F passes through an overhang part 62, the front end of the photographic film F is guided by the overhang part and guided to the internal wall of the space 52 which faces the overhang part. Consequently, the front end of the photographic film F is wound without being caught in the space 52, so the photographic film F is smoothly wound and stored in the space 52. Thus, a take-up spool is eliminated, so the number of components of the film conveyance device is decreased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film transfer device, and more particularly to a film transfer device applied to a camera or a film image input device.

[0002]

2. Description of the Related Art Conventionally, a film carrier of this type is engaged with a spool of a cartridge or a film cartridge,
By rotating the spool, a film supplying means for supplying the photographic film F from a cartridge or a film cartridge, a film conveying means for sending out and conveying the photographic film F supplied by the film supplying means, a photographic film conveyed by the film conveying means. The film winding means for winding F on the winding spool is the main structure.

Further, when the photographic film F is completely wound up on the take-up spool, the film supplying means is reversely operated so that the photographic film F is rewound from the take-up spool to the spool of the cartridge or the film cartridge. ing.

[0004]

However, the conventional film transporting device has a drawback that the number of parts is large because it has the film supplying means, the film transporting means, and the film winding means. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a film transporting device capable of reducing the number of parts.

[0005]

In order to achieve the above-mentioned object, the present invention rewinds and sends out a long photographic film wound on a spool by a film sending-out mechanism provided in a conveying path. A film transporting device for transporting is characterized in that a film winding unit is provided in which a space in which a photographic film transported by the delivery force of the film delivery mechanism is wound is communicated with the transport path.

[0006]

According to the present invention, when the photographic film is fed and conveyed along the conveying path by the film feeding mechanism,
The photographic film is stored in the film winding section by being wound into the space of the film winding section communicating with the transport path by the feeding force of the film feeding mechanism.

That is, in the present invention, since the spool on the take-up side which has been conventionally used is eliminated, the number of parts of the film transporting device can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a film transporting apparatus according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a structural diagram showing an embodiment of a film image input device to which a film transport device according to the present invention is applied.

A film cartridge 12 is installed in the main body 10 of the film image input device shown by the chain double-dashed line in the figure. A developed photographic film F is pre-wound on the spool 14 in the film cartridge 12, and the photographic film F is rewound from the film cartridge 12 by a film driving mechanism. The film drive mechanism engages with the spool 14 of the film cartridge 12, and supplies a film supply unit for rotating the spool 14 in the forward / reverse direction, and a photographic film F provided with a capstan 16 for the photographic film F. It is composed of a film transport unit that is sandwiched by the pinch roller 18 and transported at a constant speed.

The film supply section drives the spool 14 of the film cartridge 12 clockwise in the drawing,
The photographic film F is sent out from the film cartridge 12. A clutch mechanism for controlling the rotation of the spool 14 is provided in the film supply section, and the photographic film F is fed with a predetermined tension by the action of the clutch mechanism and the driving force of the capstan 16. .

The photographic film F sent from the capstan 16 is introduced into the space 52 of the film winding section 50 described later via the magnetic head device 20. The magnetic head device 20 is provided with a magnetic head 22 on the upper side of the photographic film F and a pad 24 on the lower side. The magnetic head 22 and the pad 24 are positioned in the mounting recesses 26 and 28 shown in FIG. 2 formed in the film winding portion 50. The pad 24 is biased toward the magnetic head 22 by the biasing force of the spring 30. As a result, the magnetic recording layer G (see FIG. 3) of the film F passing through the magnetic head device 20 is pressed against the magnetic head 22 by the pad 24 and read. Magnetic head 22
The magnetic data of the magnetic recording layer G read in step 1 is reproduced by the magnetic recording / reproducing device 32 and displayed on the monitor TV 34.

A CCD line sensor 36 is installed above the transport path of the photographic film F. The CCD line sensor 36 is arranged in a direction orthogonal to the conveying direction of the photographic film F, and reads a transmission image of the photographic film F illuminated from a light source 38 through an infrared cut filter 40 through a taking lens 42. The electric signal converted by the photoelectric conversion element of the CCD line sensor 36 is image-processed by the image processing device 44, and then the monitor T.
It is output as a video signal on V34. As a result, the image of the photo film F is displayed on the monitor TV 34.

As shown in FIG. 2, the film winding section 50 is formed with an entrance 54 and a passage 56 for the photographic film F, and the entrance 54 is communicated with the space 52 through the passage 56. The space 52 is formed in a cylindrical shape, and the axial length B of the space 52 is slightly longer than the width b of the photographic film F as shown in FIG. Further, the space 52 is formed with a large diameter portion 58 and small diameter portions 60, 60 on both sides thereof, and both end portions S, S of the photographing screen P of the photographic film F are guided by the small diameter portions 58, 58. It has become. Therefore, the photographing screen P of the photographic film F does not come into contact with the large diameter portion 58, that is, does not come into contact with the film winding portion 50, so that it is not damaged. In addition, the passage 56
At the boundary between the space 52 and the space 52, an overhang portion 62 is formed so as to project toward the inner wall of the space 52 that faces the space.

Next, the operation of the film transporting device constructed as described above will be described. The photographic film F sent from the capstan 16 is sent into the space 52 from the entrance 54 of the film winding section 50 through the passage 56. Then, the photo film F sent to the space 52
The both ends S, S of the photographic film F are wound into the space 52 along the curl direction of the photographic film F while being in contact with the small diameter parts 60, 60 of the space 52 and being guided by the small diameter parts 60, 60. When the leading edge of the photographic film F passes through the overhang portion 62, the leading edge of the photographic film F is guided by the overhang portion 62 and guided to the inner wall of the space 52 facing the overhang portion 62. As a result, the leading edge of the photographic film F is rolled up in the space 52 without being caught, so that the photographic film F is smoothly rolled up and stored in the space 52.

As described above, in this embodiment, since the photographic film F is wound into the space 52 and wound up, the spool on the winding side which has been conventionally used can be eliminated. Therefore, in this embodiment, it is possible to reduce the number of parts of the film transport device. Further, in this embodiment, since the spool on the winding side is eliminated as described above, the driving resistance when the photographic film F wound in the film winding section 50 is rewound into the film cartridge 12 can be reduced.
As a result, in this embodiment, the load on the drive system at the time of rewinding is reduced, so that power consumption can be reduced.

FIG. 4 is a sectional view showing a second embodiment of the film winding section applied to the film conveying apparatus according to the present invention. The film winding section 70 has recesses 72, 72 ... Formed on the circumference of the space 52, and rollers 74, 74 ... Are disposed in the recesses 72, 72. According to the second embodiment, the photographic film F fed into the space 52 is wound while being guided by the rotation of the rollers 72, 72, ... Therefore, the wrapping resistance of the photographic film F can be reduced.

FIG. 5 is a sectional view showing a third embodiment of the film winding section applied to the film conveying apparatus according to the present invention. The film winding section 80 has ridges 82, 28 formed on both sides of the space 52, and the ridges 72, 72 ... Guide both ends S, S of the photographic film F. According to the third embodiment, since the contact area of the photographic film F is smaller than that of the small-diameter portion 60 (see FIG. 3) of the first embodiment, which is in contact with both end portions S and S of the photographic film F, the photographic film F is smaller. The entrainment resistance of F can be reduced.

FIG. 6 is a structural view showing a fourth embodiment in which the film transporting device according to the present invention is applied to a film image input device. About the same or similar members as in the first embodiment shown in FIG. Are denoted by the same reference numerals and description thereof will be omitted. In the film transporting device of the fourth embodiment, the film winding unit 90 is formed so as to cover the film cartridge 12, the photographic optical system 92 including the CCD line sensor 36, and the like, and is sent from the capstan 16. F is wound into the space 96 from the entrance / exit 94 of the film winding section.

The film winding section 90 has a first rectangular shape.
Of the frame body 98 and a second frame body 100 arranged inside the frame body 98, and the space 96 includes the frame body 98,
It is formed between 100. According to this fourth embodiment,
Since the photographic film F fed from the entrance / exit 94 of the film winding section 90 is fed along the space 96 and stored, the spool on the winding side can be eliminated as in the first embodiment.

The photographic film F used in this embodiment is
A conventional base whose base is made of acetate or polyester and a base whose polyethylene naphthalate is heat-treated to be stronger and more durable than the conventional base can also be used. In particular, since the photographic film F based on polyethylene naphthalate is stiff as described above, it can be more smoothly wound into the space of the film winding portion than the conventional photographic film F. Further, since the photographic film F based on polyethylene naphthalate has a larger curl diameter than the conventional photographic film F, it can be stored by being wound in the direction opposite to the curl curl direction. In this case, the degree of freedom of the mounting position of the film winding portion is increased. Further, the polyethylene naphthalate has a glass transition temperature (T
g) heat treated at a temperature below for 0.1 to 1500 hours,
Used as a base material.

In this embodiment, the film transporting device applied to the film image input device has been described, but it may be applied to the camera. In this case as well, the take-up spool of the film transport device can be eliminated as in the film image input device, so that the number of components of the film transport device can be reduced.

[0022]

As described above, according to the film conveying apparatus of the present invention, the film take-up portion having the space in which the photographic film is wound by the feeding force of the film feeding mechanism is provided to eliminate the spool on the winding side. Therefore, the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a structural diagram showing a first embodiment in which a film transport device according to the present invention is applied to a film image input device.

2 is a cross-sectional view of a film winding section applied to the film transport device shown in FIG.

3 is a sectional view of the film winding section shown in FIG. 2, taken along line 3-3.

FIG. 4 is a sectional view showing a second embodiment of the film winding section.

FIG. 5 is a sectional view showing a third embodiment of the film winding section.

FIG. 6 is a structural diagram showing a fourth embodiment in which a film transport device according to the present invention is applied to a film image input device.

[Explanation of symbols]

 10 ... Film image input device main body 12 ... Film cartridge 20 ... Magnetic head device 34 ... Monitor TV 36 ... CCD line sensor 44 ... Image processing device 50, 70, 80, 90 ... Film winding section 52, 96 ... Space F ... Photo Film

Claims (1)

[Claims] 1. A film transfer device for rewinding and sending out a long photographic film wound on a spool by a film sending-out mechanism provided in a transfer path, and sending out force of the film sending-out mechanism. A film transporting device, wherein a film winding section is formed in which a space in which a photographic film transported by the device is wound is communicated with the transport path.