JPH08129218A - Camera using film with magnetic storage part and recording of reproducing unit in the camera - Google Patents

Abstract

PURPOSE: To surely allow film to slide on a magnetic head only when film travels without providing a special moving mechanism for the magnetic head or the film in a camera using film with a magnetic storage part. CONSTITUTION: The film 4 fed from a film cartridge 3 is taken up by a winding spool 7 through a guiding roller 20. When the film 4 is stopped, it is brought into contact with a film guiding member 5 by a film pressing plate 8 so as to regulate a 1st film path, and the film 4 is separated from the magnetic head 10. When the film 4 is wound, it floats and is separated from the guiding member 5 against the pressing force of the pressing plate 8 by film tension so as to regulate a 2nd film path, then the film 4 slides on the magnetic head 10, so that recording or reproducing is performed. Even when the stopping state of the film 4 is kept long, fixing between the magnetic head 10 and the film 4 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera using a film with a magnetic memory unit, which has a magnetic head for writing or reading information by slidingly contacting a magnetic memory unit provided on the film, and a magnetic head in this camera. It relates to the recording or reproducing unit including.

[0002]

2. Description of the Related Art In recent years, a film having a magnetic storage unit is used, and shooting information such as shutter speed, aperture value, shooting date, title, etc. is written (recorded) or necessary in this magnetic storage unit. There has been proposed a camera capable of reading out (reproducing) this photographing information according to the above, and further deleting it.

6 and 7 are a top view and a rear view showing a schematic structure of such a camera. 1 is the camera body,
Reference numeral 2 is a lens barrel, 3 is a film cartridge loaded in the camera body 1, and 4 is a film pulled out from the film cartridge 3. As shown in FIG. 7, the film 4 is provided with a magnetic storage unit 4b along, for example, the lower side of the image capturing area 4a. 5 is a film guide member that regulates the traveling position of the film 4, 11 is a guide pin,
7 is a film winding spool. 8 is a film pressure plate elastically supported by the camera body 1 by a spring 9;
Is a magnetic head that is in close contact with the film 4.

In the camera having the above structure, the film 4 fed from the film cartridge 3 passes between the guide reference surface 5a of the film guide member 5 and the film pressure plate 8 and is wound up by the film winding spool 7 to a predetermined position. Stop at the film cue position. Then, a photograph is taken with the film pressure plate 8 in a state where the waviness of the film 4 is removed, and after this photographing, the film 4 is wound up by one frame. At the time of this winding, information is recorded on or reproduced from the magnetic storage portion 4b of the film 4 by the magnetic head 10 that is in sliding contact with the film 4.

[0005]

However, in the camera as described above, when the film 4 is loaded, the magnetic head 10 is constantly operated when the film 4 is stopped, as well as when the film 4 is running. Since it is in close contact with the magnetic storage unit 4b of No. 4, it has the following drawbacks.

When the camera is not used for a long time, the magnetic head 10 and the magnetic storage portion 4b of the film 4 are fixed to each other, and the magnetic layer of the magnetic storage portion 4b is adhered to the magnetic head 10. When used, the recording or reproducing ability is deteriorated due to the spacing. For example, if the camera is left in a bad environment of high temperature and high humidity, such as in a car, the same performance deterioration as described above will occur. Under the above use and storage conditions, in some cases, the film 4 and the magnetic head 10 chemically react with each other, causing corrosion of the magnetic head 10 and making recording or reproduction impossible at all.

Therefore, the present invention provides a camera using a film with a magnetic storage unit, which can surely bring the film into sliding contact with the magnetic head only when the film is running without providing a special moving mechanism for the magnetic head or the film. ,
It is another object of the present invention to provide an optimum recording or reproducing unit as a constituent unit including a magnetic head in this camera.

[0008]

In order to achieve the above object, the present invention provides a film with a magnetic memory portion, which comprises a magnetic head for writing or reading information by slidingly contacting the magnetic memory portion provided on the film. In a camera to be used, the magnetic head is arranged at a fixed position, and a first film path when the film is stopped and a second film path formed by film tension when the film is running are defined. Separating the film from the magnetic head in the first film pass,
In the second film pass, the film is brought into sliding contact with the magnetic head.

The present invention also provides the above camera,
A direction in which the traveling direction of the film, which has a film guide reference surface that regulates the position of the film in the first film path and defines the second film path, floats and separates the film from the film guide reference surface. Is characterized in that.

Further, in the present invention, in the above camera, a film pressure plate for pressing the film against the film guide reference surface is provided, and the pressing force of the film pressure plate is
The film tension is set to be weaker than the film tension forming the second film path.

In each of the cameras, a pair of guide pins are provided near both sides of the magnetic head,
It is advisable to bring the film into contact with the guide pins in the film pass.

Further, the present invention is a recording or reproducing unit in the camera, wherein the magnetic head, a film guide member having the film guide reference surface,
The film pressure plate and the film pressure plate are arranged at a predetermined position of the mounting member and configured as one unit.

In the recording or reproducing unit, a pair of guide pins that come into contact with the film in the second film pass may be arranged near both sides of the magnetic head of the mounting member, Further, a guide member for defining a film traveling direction for defining the second film path may be arranged at a predetermined position of the attachment member.

[0014]

According to the camera of the present invention constructed as described above, the magnetic head is fixedly arranged, and when the film is stopped, the first film path is defined so that the film does not adhere to the magnetic head. Are separated by. When the film is running, for example, when the film is wound up, the second film path is defined by using the film tension generated by the film winding, and the film is surely brought into sliding contact with the magnetic head to enable recording or reproduction. This prevents the magnetic head and the magnetic storage portion of the film from sticking to each other even when the film is stopped for a long time without using the camera for a long time. Further, since the film tension is used when defining the second film path, no special moving mechanism for the magnetic head or the film is required.

When the position of the film is regulated by the film guide reference surface in the first film pass, the film is run in a direction in which the film is floated and separated from the film guide reference surface to define the second film pass. The state switching between the first film pass and the second film pass is easy, and the space required for moving the film is small. Furthermore, when pressing the film against the film guide reference surface by the film pressure plate, the pressing force of the film pressure plate is made weaker than the film tension in the second film pass, so that the second film path is defined. The film pressure plate can be reliably moved against the pressing force.

Further, according to the recording or reproducing unit of the present invention, at least the magnetic head, the film guide member, and the film pressure plate are arranged in the mounting member to form one unit, so that mounting and relative mounting of the respective parts can be performed. Positioning can be performed extremely easily and highly accurately.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a camera according to the present invention will be described below with reference to FIGS. 1 and 2 show a first embodiment, FIG. 1 is a top view showing a schematic configuration of a camera when a film is stopped, and FIG. 2 is a top view showing a schematic configuration of a camera when a film is wound. It should be noted that the same reference numerals are given to the components substantially equivalent to those in FIGS. 6 and 7, and the description thereof will be omitted.

As shown in FIGS. 1 and 2, a film guide member 5 having a guide reference surface 5a for holding the film 4 on a constant image plane and a film winding spool 7 are provided between the film guide member 5 and the film winding direction. Specified guide roller 2
0 is arranged. The film sliding contact surface of the guide roller 20 is the guide reference surface 5 of the film guide member 5.
It is arranged so as to be biased toward the back side by a distance a from a.

As shown in FIG. 1, when the film 4 is stopped, the first film path is defined. That is, since no tension is applied to the film 4, the film 4 is brought into close contact with the guide reference surface 5 a of the film guide member 5 by the pressing force of the film pressure plate 8 by the spring 9.
The magnetic head 10 is fixedly arranged between the end portion of the film pressure plate 8 and the guide roller 20, and the film 4 is separated from the film sliding contact portion of the magnetic head 10 in this first film pass. In this state, a photograph is taken in the image photographing area 4a of the film 4 (see FIG. 7).

Then, as shown in FIG. 2, when the film 4 is wound by the film winding spool 7, the second film path is defined by the tension generated in the film 4. That is, since the guide roller 20 is biased, the film winding direction from the guide pin 11 to the guide roller 20 is a direction in which the film is gradually floated and separated from the guide reference surface 5a of the film guide member 5 (arrow b).
Direction). Thereby, the state switching between the first film pass and the second film pass is easily performed in a small space.

By the way, the pressing force of the film pressure plate 8 by the spring 9 is set to be smaller than the vertical component of the film tension generated when the film 4 is wound up.
Therefore, when the film 4 is wound up, the film pressure plate 8 is reliably floated in the direction of arrow c against the pressing force of the spring 9 by the film tension, and the second film path is easily defined. In this second film pass, the film 4 is surely brought into sliding contact with the film sliding contact portion of the magnetic head 10. In this state, the magnetic head 10 causes the film 4
Information is recorded in or reproduced from the magnetic storage unit 4b (see FIG. 7). Needless to say, the film tension is relative to the film winding force of the spool 7 and the film drawing resistance on the cartridge 3 side.

Further, a pair of guide pins 21 for defining contact between the magnetic head 10 and the film 4 are provided near both sides of the magnetic head 10. The film sliding contact portion of the magnetic head 10 is made to project from the film running surface between both guide pins 21 by approximately the film thickness. And the second
In the film pass of the film, the film 4 has both guide pins 2
1 is abutted. Thereby, even if the span between the guide pin 11 and the guide roller 20 is long, the film 4 can be surely brought into sliding contact with the film sliding contact portion of the magnetic head 10 between the both guide pins 21.

Next, after the film 4 is wound up to the next frame, when the film 4 is stopped and the film tension is weakened, the film 4 is again guided by the film pressure plate 8 to the film guide member 5 as shown in FIG. It is in close contact with the reference surface 5a.

When the photographing of all the frames or the desired frame of the film 4 is completed, the film 4 is rewound in the direction of arrow d by the rotation of the rewinding spool 22. When the film is rewound, the state shown in FIG. 2 is brought about by the film tension. However, if recording or reproduction is not particularly performed at the time of rewinding, the film may be rewound in a film path in an intermediate state between FIG.

As described above, the film 4 can be formed without providing a special moving mechanism for the magnetic head 10 or the film 4.
When the film is stopped, the film 4 can be separated from the magnetic head 10, and by utilizing the film tension when the film 4 is wound up, the film 4 can be surely brought into sliding contact with the magnetic head 10 when the film is wound up. Therefore, even when the stopped state of the film 4 continues for a long time, the magnetic head 10 and the magnetic storage portion 4b of the film 4 do not stick to each other, and recording or reproduction of necessary information on the film 4 is always ensured. It can be carried out.

Next, a second embodiment will be described with reference to FIGS. 3 is an exploded top view showing a schematic configuration of a camera and a recording or reproducing unit, FIG. 4 is a top view showing a schematic configuration of a camera after a recording or reproducing unit is incorporated, and a top view when a film is stopped. FIG. It is a top view at the time of film winding which shows a schematic structure of a camera after incorporation.

In the second embodiment, as shown in FIG. 3, a recording or reproducing unit 30 in which each component is arranged on a mounting member 23 is provided. The mounting member 23 is a horizontal plate 23.
It is formed in a substantially L shape by a and the vertical plate 23b. Then, the film guide member 5, the magnetic head 10,
Guide pin 11, guide roller 20, and both guide pins 2
1 is attached to the horizontal plate 23 a of the attachment member 23, and the spring 9 of the film pressure plate 8 is attached to the vertical plate 23 b of the attachment member 23. The positional relationship of each component is the same as in the first embodiment. Then, as shown in FIGS. 4 and 5,
The mounting reference surface 5b of the film guide member 5 is in close contact with and fixed to the mounting reference surface 1a of the camera body 1. The operation in FIGS. 4 and 5 is the same as the operation described in FIGS.

As in the second embodiment, each component is arranged on the mounting member 23 and is incorporated in the camera body 1 as one recording or reproducing unit 30, so that the mounting and relative positioning of each component is very easy. And it can be performed with high accuracy. Also, the improvement in accuracy can further improve the recording or reproducing performance. Further, in the present embodiment, since the guide roller 20 and the both guide pins 21 for defining the film traveling direction are also arranged on the mounting member 23, it is possible to more accurately define the above-mentioned second film path. become.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various effective modifications and applications can be made based on the technical idea of the present invention. For example, if the second film path is effectively defined by the film tension when the film is running, the placement position of the magnetic head can be changed variously with respect to the first film path when the film is stopped. Is.

[0030]

As described above, according to the camera of the present invention, the film is separated from the magnetic head in the first film pass when the film is stopped, and the second film utilizing the film tension when the film is running is used. By sliding the film on the magnetic head in the pass,
Even if the film is stopped for a long time without using the camera for a long time, it is possible to prevent the magnetic head and the magnetic storage part of the film from sticking to each other. It will be possible.

Further, since the second film path is defined by utilizing the film tension during the film running, no special moving mechanism for changing the position of the magnetic head or the film is required, so that the number of parts and the number of assembling steps are reduced. It is possible to realize a configuration that satisfies the required functions while suppressing the manufacturing cost without increasing the number.

Further, according to the recording or reproducing unit of the present invention, the magnetic head, the film guide member, the film pressure plate and the like can be easily and accurately incorporated into the camera, so that the assembling work can be performed. In addition to simplification, it is possible to improve the recording or reproducing performance and the accuracy of the film path regulation.

[Brief description of drawings]

FIG. 1 is a top view showing a schematic configuration of a camera according to a first embodiment of the present invention when a film is stopped.

FIG. 2 is a top view at the time of film winding, showing a schematic configuration of the camera in the first embodiment.

FIG. 3 is an exploded top view showing a schematic configuration of a camera and a recording or reproducing unit according to a second embodiment of the present invention.

FIG. 4 is a top view when the film is stopped, showing a schematic configuration of a camera after the recording or reproducing unit is incorporated in the second embodiment.

FIG. 5 is a top view at the time of film winding, showing a schematic configuration of the camera after the recording or reproducing unit is incorporated in the second embodiment.

FIG. 6 is a top view showing a schematic configuration of a conventional camera in a film loaded state.

FIG. 7 is a rear view showing a schematic configuration of the conventional camera in a film loaded state.

[Explanation of symbols]

 1 camera body 1a mounting reference surface 2 lens barrel 3 film cartridge 4 film 4a image shooting area 4b magnetic storage unit 5 film guide member 5a guide reference surface 5b mounting reference surface 7 film winding spool 8 film pressure plate 9 spring 10 magnetic head 11 guide Pin 20 Guide roller for defining film traveling direction 21 Guide pin 22 Film rewinding spool 23 Mounting member 23a Horizontal plate 23b Vertical plate 30 Recording or reproducing unit

Claims (7)

[Claims] 1. A camera using a film with a magnetic storage unit, comprising a magnetic head for writing or reading information by slidingly contacting a magnetic storage unit provided on a film, wherein the magnetic head is arranged at a fixed position, and A first film pass when the film is stopped and a second film pass formed by film tension when the film is running are defined, and the film is separated from the magnetic head in the first film pass. A camera using a film with a magnetic memory, wherein the film is brought into sliding contact with the magnetic head in the second film pass. 2. A film guide reference surface that regulates the position of the film in the first film path, and a traveling direction of the film that defines the second film path is such that the film is the film guide reference surface. The camera using the film with a magnetic storage section according to claim 1, wherein the camera is in a direction in which the film is floated away from the camera. 3. A film pressure plate for pressing the film against the film guide reference surface, wherein the pressing force of the film pressure plate is set to be weaker than the film tension forming the second film path. A camera using the film with a magnetic storage unit according to claim 2. 4. A pair of guide pins are provided near both sides of the magnetic head, and the film is brought into contact with the both guide pins in the second film pass. A camera that uses a film with a magnetic storage unit. 5. A recording or reproducing unit in a camera using the film with a magnetic storage unit according to claim 3, wherein the magnetic head, the film guide member having the film guide reference surface, and the film pressure plate are A recording or reproducing unit, which is arranged at a predetermined position of a mounting member and configured as one unit. 6. The recording according to claim 5, wherein a pair of guide pins that abut the film in the second film pass are arranged near both sides of the magnetic head of the mounting member. Or a playback unit. 7. The film traveling direction defining guide member for defining the second film path is arranged at a predetermined position of the mounting member. Recording or playback unit.