JPH05181192A - Camera - Google Patents

Abstract

PURPOSE:To attain excellent magnetic recording and reproducing by making a photographic film into a stable state. CONSTITUTION:A tensioning means 10 coming into contact with a part of the photographic film 3 to give constant tensile force to it, at the time of recording and reproducing, is installed on a camera main body 1 between a cartridge room 4 on which a cartridge 2 housing the photographic film 3 is loaded, and an aperture 5 for exposing the photographed/exposed surface of the photographic film 3, and the feeding of the film at the time of recording and reproducing is made constant and stabilized, to stably write and read information on the magnetic recording part of the photographic film 3 by a magnetic head 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of recording and / or reproducing various information on a magnetic recording portion formed on a photographic film.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a camera which uses a silver salt film having a magnetic recording layer formed thereon and has means for recording various kinds of photographing information on a magnetic recording layer corresponding to each photographed frame.

By reading the various kinds of photographing information recorded on the film, it can be used as reference data at the time of classifying and organizing frames and printing at a photo lab.

[0004]

In the conventional magnetically recordable camera described above, the film is fed from the cartridge and is wound by the winding spool of the camera body. The speed was unstable and unstable. Therefore, there is a problem that recording / reproduction is not performed in a constant state on the magnetic recording layer formed at a predetermined position on the film.

It is an object of the present invention to provide a magnetically recordable camera capable of excellent recording and reproduction while the film is stable.

[0006]

In order to achieve the above object, a magnetic head for recording or reproducing various information to or from a magnetic recording section using a photographic film having a photographic photosensitive surface and a magnetic recording section. In a camera equipped with a photographic film, between the cartridge chamber in which the cartridge containing the photographic film is loaded and the opening for exposing the photographic photosensitive surface, a constant tension is applied to the photographic film during recording or reproduction. Is provided with a tension applying means for applying.

The second means is a fork body for feeding and rewinding a photographic film from a patrone accommodating the photographic film in the above camera, and a constant tension is applied to the photographic film during recording or reproduction. Therefore, it is characterized in that it is provided with a friction applying means for contacting the fork body.

A third means is a fork body for feeding and rewinding a photographic film from a patrone containing the photographic film, a spool for winding the photographic film, and the fork body and the spool in the above camera. A driving means for driving the photographic film, a detecting means for detecting the feeding length of the photographic film, a film feeding after the photographic film is rewound by a predetermined fixed amount, and recorded when the film feeding speed becomes constant. Alternatively, it is provided with a control means for performing reproduction.

A fourth means is a driving means for feeding and rewinding the photographic film from the cartridge storing the photographic film in the above-mentioned camera, and a magnetic reproduction when the photographic film is fed, and further a photographic film. And a control means for performing magnetic recording when the film is rewound.

A fifth means is characterized in that, in the above-mentioned camera, a moving means is provided for moving the magnetic head with respect to the magnetic recording portion when the magnetic head records or reproduces information on the magnetic recording portion. To do.

[0011]

According to the above-mentioned first means, by applying a constant tension to the photographic film by the tension applying means,
The film feeding condition during recording and playback becomes constant and stable.

According to the second means, since the friction applying means is brought into contact with the fork body for feeding or rewinding the film from the cartridge, a constant tension is applied to the photographic film.
The film feeding condition during recording and playback becomes constant and stable.

According to the third means, at the time of recording and reproducing, the photographic film is temporarily rewound and then the film is fed out. Therefore, the film feeding at the time of recording and reproducing is always constant. Since the film is fed, the film feeding speed can be easily and surely kept constant.

According to the fourth means, since the magnetic reproduction or the magnetic recording is performed in correspondence with the feeding or rewinding of the photographic film, the recording and the reproducing are performed in a constant film feeding state.

According to the fifth means, a photographic film whose feeding state is unstable can be stabilized by moving the magnetic head with respect to the magnetic recording portion of the photographic film without feeding it during recording and reproduction. Recording and playback are performed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of the essential parts of a first embodiment of the present invention, in which 1 is a camera body and 2 is a photographic film 3 which will be described later.
A cartridge chamber for accommodating the above, 4 a cartridge chamber provided on one side of the camera body 1, 5 an opening for exposing the photographic film 3, and 6 a film winding provided on the other side of the camera body 1. A spool for taking, 7 is a film pressure plate that is installed opposite to the opening 5, 8 is a roller that is installed between the cartridge chamber 4 and the opening 5, and 9 is rotatable on the back of the film pressure plate 7. The lever 10, provided at the end of the lever 9, protrudes from the through hole 7a formed in the film pressure plate 7 and is provided to face the roller 8. The tension applying means 11 is made of a high-quality material, 11 is a spring for biasing the tension applying means 10 toward the roller 8 via the lever 9, and 12 is a receiving portion 9a provided on the back of the lever 9. Lever for rotating lever 9 and lever 13 for film pressure A magnetic head 15, which partially penetrates through the camera main body 1 and the film pressure plate 7 and protrudes partly in the film feeding path 14, is rotatably provided in the cartridge chamber 4 and is rotated from the cartridge 2 to the photographic film 3. Spool 2 of the cartridge 2 to send out and rewind
a fork body for driving a, 16 is the spool 6, the operating rod 1
2, a drive unit for driving the fork body 15, and 17 is a CPU (central processing unit) having a function as control means for controlling the recording / reproducing by the magnetic head 13 and the drive unit 16.

FIG. 2 is a front view showing an example of a photographic film used in the present embodiment. The photographic film 3 has a photographic photosensitive surface 20 in the central portion and a plurality of line segment magnetic recordings at the upper and lower portions. A portion 21 is provided, and a perforation 22 is formed on the upper portion thereof so as to correspond to each of the photographic photosensitive surfaces 20.

In the first embodiment having the above construction, when the cartridge 2 is loaded into the cartridge chamber 4, the CPU 17
By sending a control signal to the drive unit 16 and moving the operating rod 12 against the urging force of the spring 11, the lever 9 is rotated to retract the tension applying means 10 from the film feeding path 14, and thereafter, By rotating the fork body 15, the Patrone 2
From photographic film 3 to film feed path 14 to spool 6
Send in the direction. When the photographic film 3 is wound on the spool 6 and the photographic film surface 20 of the photographic film 3 is set at a predetermined position of the opening 5, the film feeding by the above-mentioned feeding and winding is stopped, and the photographic film surface is taken. It becomes possible to shoot 20 exposures. Various shooting data at the time of shooting, CP
It is read by U17 and is recorded by the magnetic head 13 in the magnetic recording section 21 of the corresponding photographing frame after photographing.

At the time of recording and reproducing, the CPU 17 controls the drive unit 16
Sends a control signal to and returns the operating rod 12. Then, the lever 9 receives the urging force of the spring 11 and moves in the direction of the film feeding path 14, causing the tension applying means 10 to project into the film feeding path 14, and the tension applying means 10 and the roller 8 cause the photographic film 3 to move. Hold a part.

Next, the drive unit 16 rotates the fork body 15 in the film rewinding direction. At this time, the photographic film 3
A constant tension is applied by the tension applying means 10 and the roller 8, and a constant and stable film feeding is performed. In this state, the magnetic head 13 writes / reads information to / from the magnetic recording section 21 to perform stable recording / reproducing.

FIG. 3 is a perspective view of an essential part of the second embodiment of the present invention, and FIG. 4 is a sectional view of the essential part of FIG. 3. In this second embodiment, the tension applying means 10 of the first embodiment is used. Instead, the fork body 15 that drives the spool of the cartridge described with reference to FIG. 1 is provided with friction imparting means. That is, with respect to the small diameter portion 15a at the bottom of the fork body 15, the brake band 30
The friction applying means 32 formed by adhering a friction member 31 made of a material having a high friction coefficient such as a rubber material or a felt material is in contact with the inner surface of the. Incidentally, 33a and 33b in the figure are brake band holders, one brake band holder 33a is fixed to an appropriate fixing member 34, and the other brake band holder 33b is fixed via a tension spring 35. It is fixed to the member 36.

The fork body is provided by the friction applying means 32.
Since a constant braking force (friction force) can be applied to the 15 at all times, a constant tension is also applied to the photographic film, and a constant and stable film feeding is performed. Recording and reproduction on the magnetic recording section are performed stably.

FIG. 5 is a block diagram of the essential parts of a third embodiment of the present invention. Members corresponding to those described with reference to FIG. 1 are designated by the same reference numerals and detailed description thereof is omitted. 40 in
Is a photo sensor which is a detection means for detecting the perforation 22 of the photographic film 3 shown in FIG. 2 to detect the film feed length.

In the above third embodiment, the magnetic head
Recording on the magnetic recording part of the photographic film 3 by 13,
At the time of reproduction, the CPU 17 rewinds the photographic film 3 onto the cartridge 2 by a predetermined amount.
The fork body 15 is rotationally driven while detecting the feeding length of the photographic film 3 at 40.

As shown in FIG. 6, it generally takes time for the film feeding speed to become constant from the start of feeding due to the characteristics of the feeding mechanism. However, according to the third embodiment described above, the film feeding at the time of recording and reproducing always starts from a constant rewinding state, so that the film feeding speed becomes easy and surely constant. As shown in FIG. 6, when the film feeding speed becomes constant (between t _{1 and} t ₂ ), recording and reproduction are performed by the magnetic head 13 so that recording and reproduction are performed in a stable state. It will be.

The CPU 17 controls each part so that the magnetic head 13 causes magnetic reproduction when the photographic film 3 is sent from the cartridge 2 and magnetic recording is performed when the photographic film 3 is rewound on the cartridge 2. By controlling, the recording and the reproduction are performed in a constant feeding state, respectively, and thus are stable.

FIG. 7 is a block diagram of the essential portions of the fourth embodiment of the present invention, in which 45 is a drive gear provided on the film pressure plate 46, and 47 is a drive gear.
Is a rack body that is a moving means having a tooth portion 47a that meshes with the drive gear 45, 48a and 48b are position sensors for detecting the left and right positions of the rack body 47, 49 is a CPU, and 50 is the drive gear 45. It is a drive unit for driving.

FIG. 8 is a cross-sectional view showing the construction related to the drive gear and the rack body of FIG. 7, in which the rack body 47 passes through the long hole 51 formed in the film pressure plate 46 to the film feeding path 52. A magnetic head 53 having a protruding tip is fixed, and a pair of guide pins 55a and 55b embedded in the film pressure plate 46 are inserted into a horizontally elongated hole 54 formed in the rack body 47.

In FIG. 7, reference numeral 2 is a cartridge in which the photographic film 3 as shown in FIG. 2 is stored.

In the fourth embodiment described above, at the time of recording / reproducing information on / from the photographic film 3, the feeding of the photographic film 3 is stopped and the driving gear 45 is rotationally driven by the driving unit 50 to laterally move the rack body 47. .. The lateral movement of the rack body 47 is guided by the guide pins 55a and 55b, and the rack body 47 laterally moves within a predetermined range under the control of the CPU 49 which receives the position detection signal from the position sensors 48a and 48b.

The lateral movement of the rack body 47 causes the magnetic head 53 to move.
Slides on the magnetic recording portion of the photographic film 3 to write and read information for recording or reproduction.
Compared to the case where the photographic film 3 is moved for recording and reproduction, moving the magnetic head 53 as in the fourth embodiment can stabilize the writing and reading operations by the magnetic head 53.

[0033]

As described above, according to the first embodiment of the present invention, the tension applying means for contacting the photographic film, and the second means for the friction applying means for contacting the fork body. By applying a constant tension to the photographic film, the film feeding at the time of recording and reproducing can be made constant and stable. Further, according to the third means, the film feeding at the time of recording and reproducing can be made constant. It can be started, the film feeding speed can be easily and surely made constant, and according to the fourth means, either recording or reproducing is performed according to the feeding direction of the photographic film. Can be recorded and reproduced in a constant state, and according to the fifth means, by moving the magnetic head with respect to the magnetic recording portion without feeding the photographic film at the time of recording and reproducing, the magnetic head stabilizes. Shi Writing information, since it is read, the photographic film is in a stable state, it is possible to provide a camera capable of excellent recording and reproducing.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a first embodiment of the present invention.

FIG. 2 is a front view showing an example of a photographic film.

FIG. 3 is a perspective view of a main part of a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of FIG.

FIG. 5 is a configuration diagram of a main part of a third embodiment of the present invention.

FIG. 6 is a characteristic diagram of film feeding.

FIG. 7 is a configuration diagram of a main part of a fourth embodiment of the present invention.

8 is a cross-sectional view showing a related configuration between the drive gear and the rack body of FIG.

[Explanation of symbols]

2 ... Patrone, 3 ... Photographic film, 4 ... Patrone chamber, 5 ... Opening part, 6 ... Spool, 10 ... Tension applying means, 13, 53 ... Magnetic head, 15 ... Fork body, 16 ...
Drive unit, 17, 49 ... CPU (control means), 20 ... Photosensitive surface, 21 ... Magnetic recording unit, 30 ... Brake band, 31 ...
Friction member, 32 ... Friction applying means, 40 ... Photo sensor
(Detection means), 45 ... Drive gear, 47 ... Rack body (moving means).

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tokusaburo Kakiuchi 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh Company (72) Inventor Takao Inoue 1-3-3 Nakamagome, Ota-ku, Tokyo Shares In Ricoh Company (72) Inventor Akira Ando 1-3-6 Nakamagome, Ota-ku, Tokyo

Claims (5)

[Claims] 1. A photographic film having a photographing photosensitive surface and a magnetic recording portion is used, and the photographic film is housed in a camera having a magnetic head for recording or reproducing various kinds of information on the magnetic recording portion. A tension applying means is provided between the patrone chamber in which the patrone is loaded and the opening for exposing the photo-sensitive surface to provide a constant tension by contacting the photographic film during recording or reproduction. A camera to do. 2. A photographic film having a photographic photosensitive surface and a magnetic recording portion is used, and the photographic film is housed in a camera having a magnetic head for recording or reproducing various information on the magnetic recording portion. A camera provided with a fork body for feeding and rewinding a photographic film from a cartridge, and a friction applying means for contacting the fork body to give a certain tension to the photographic film during recording or reproduction. .. 3. A photographic film having a photographic photosensitive surface and a magnetic recording portion is used, and the photographic film is housed in a camera having a magnetic head for recording or reproducing various kinds of information on the magnetic recording portion. A fork body for sending and rewinding photographic film from the cartridge, a spool for winding the photographic film, a drive means for driving the fork body and the spool, and a detection for detecting the feeding length of the photographic film A camera comprising: a means for rewinding a predetermined amount of photographic film, and then feeding the film to perform recording or reproduction when the film feeding speed becomes constant. 4. A photographic film having a photographic photosensitive surface and a magnetic recording section is used, and the photographic film is housed in a camera having a magnetic head for recording or reproducing various kinds of information on the magnetic recording section. A drive means for feeding and rewinding the photographic film from the patrone and a control means for magnetically reproducing the photographic film when it is fed and magnetic recording when the photographic film is rewound are provided. Characteristic camera. 5. A camera provided with a magnetic head for recording or reproducing various kinds of information to or from a magnetic recording section using a photographic film having a photo-sensing surface and a magnetic recording section, wherein: A camera comprising a moving means for moving the magnetic head with respect to the magnetic recording unit when recording or reproducing information by the magnetic head.