JPH06289463A - Camera capable of magnetically recording - Google Patents

Abstract

PURPOSE:To provide a camera capable of magnetically recording, for surely pressing a magnetic head on the magnetic recording part of a film at the time of winding the film and retreating the magnetic head from the magnetic recording part of the film at the time of loading or stopping the film. CONSTITUTION:The camera is equipped with a driving means 6 rotating a film receiving spool 9 in a prescribed direction, to wind the film 8 or the spool 1a loaded in a film cartridge 1 in the prescribed direction, to rewind the film, a magnetic head pressing means 15 pressing the magnetic head 13 on the magnetic recording part 8a of the film, linked with the rotation of the film receiving spool 9 and a pressing means 8 retreating the magnetic head pressing means from the magnetic recording part of the film, when the operation of the driving means is stopped or the spool is rotated in a direction opposite to the prescribed direction, as a characteristic.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a magnetically recordable camera, more specifically a film having a magnetic recording section, and a magnetic head for recording or reproducing photographing information or the like in the magnetic recording section. The present invention relates to a magnetically recordable camera.

[0002]

2. Description of the Related Art In recent years, a magnetically recordable camera using a film having a magnetic recording portion and having a built-in magnetic head for recording or reproducing photographing information has been actively proposed. In particular, in an automatic loading camera in which the spool inside the loaded film cartridge is rotated in a predetermined direction so that the leading edge of the film is automatically fed out from inside the cartridge, when the film is fed, the Proposals have been made to retract the head and ensure delivery of the film.

Further, the one disclosed in Japanese Patent Laid-Open No. 3-200130 relates to a position in which a magnetic head is retracted from a film traveling path by a biasing means that is spring-charged by loading a film cartridge into a camera. When the film leading edge detecting means provided between the magnetic head and the film winding spool detects the leading edge of the film, the locking of the magnetic head is released by this, and the magnetic head is attached to the magnetic recording portion of the film. It is configured to be pressed.

Further, in Japanese Unexamined Patent Publication No. 4-1622, when the number of perforations of a film is counted and it is detected that the film is wound around a winding spool,
It is described that a magnetic head is driven to press it against a film.

[0005]

However, the technical means disclosed in the above-mentioned Japanese Patent Laid-Open No. 3-200130 requires a film leading edge sensing means and a biasing means for spring charging by loading a film cartridge. Further, since the film front end portion of the film having a complicated structure and being soft is detected by the film front end detecting means, there is a problem of lack of reliability. Further, the technical means disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 4-1622 requires a driving means which is a pad motor for independently driving the magnetic head, because the film is wound around the winding spool, and is incorporated in the camera. Since a space for arranging this is required, there is a drawback that the camera becomes large and the cost also increases.

The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to make sure that the magnetic head is pressed against the magnetic recording portion of the film when the film is wound, and to prevent the magnetic head from moving when the film is loaded or stopped. Another object of the present invention is to provide a camera capable of magnetic recording that has a simple structure for retracting from the magnetic recording unit.

[0007]

According to the present invention, it is possible to magnetically record photographic information or the like on a magnetic recording portion of a film, or to have a magnetic head having a magnetic head for reproducing the photographic information or the like recorded on the magnetic recording portion. In the camera, the film winding spool is rotated in a predetermined direction to wind up the film, or the spool in the loaded film cartridge is rotated in a predetermined direction to rewind the film, The magnetic head pressing means for pressing the magnetic head against the magnetic recording portion of the film in synchronization with the rotation of the spool by the driving means, and the operation of the driving means being stopped, or the spool being in a predetermined direction. Has a biasing means for retracting the magnetic head pressing means from the magnetic recording portion of the film when rotating in the opposite direction. In addition, an automatic loading type camera configured to automatically feed the film out of the outlet of the loaded film cartridge, by rotating the spool in the loaded film cartridge in a predetermined direction. When the output of the moving amount detecting means for detecting the moving amount of the fed film, the moving amount detecting means for detecting the moving amount of the fed film, and the moving amount detecting means reach a predetermined value,
The film winding spool has a winding drive means for rotating the film in a predetermined direction to wind the film, and a magnetic head for recording or reproducing photographing information or the like in the magnetic recording portion of the film. Magnetic head pressing means for pressing the magnetic head against the magnetic recording portion of the film in synchronization with the rotation of the spool by the magnetic head, and the magnetic head pressing means provided in the magnetic head pressing means, when the magnetic head pressing means moves in the direction of pressing the film. A film guide means for pressing the film toward the outer circumferential surface of the winding spool,
When the operation of the drive means is stopped, or when the spool is rotating in the direction opposite to the predetermined direction,
The magnetic head pressing means and the film guide means are provided with a biasing means for retracting the film guide means from the film.

[0008]

The function of the film is to press the magnetic head against the magnetic recording portion of the film in relation to the film driving means only when the film is running for magnetic recording or reproduction by the magnetic head, and to stop the film and prevent the magnetic recording or reproduction. When traveling, the magnetic head retracts from the magnetic recording portion of the film by the operation of the biasing means.

[0009]

The present invention will be described below with reference to the illustrated embodiments. 1 and 3 show the essential parts of a magnetically recordable camera showing a first embodiment of the present invention. This camera is an automatic loading type camera. In the film cartridge 1 loaded in the film supply chamber 3 of the camera body 2, a rewinding spool 1a in the film cartridge 1 is connected to a spool rotation gear 4. The rotation gear 4 is connected to an output gear 6a of a rewinding motor 6 via a reduction gear train 5. When the film 8 is loaded, the film cartridge 1 is loaded into the film supply chamber 3 so that the rewinding motor 6 rotates in the opposite direction to the rewinding of the film, and the rewinding spool 1a is rewound. By rotating the film in the opposite direction to the time, the leading end of the film is sent out from inside the cartridge 1. The fed-out film front end is stretched on the aperture 2a of the camera body 2 and then guided by the film guide plate 10 and the guide roller 11 to be wound around the winding spool 9 in the film winding chamber 7.

The film 8 has a magnetic recording portion 8a composed of a magnetic recording band for recording photographic information and the like on the lower portion on the back surface side thereof, and well-known perforations 8b are formed on both side edge portions thereof. It is set up. A reflected light type photointerrupter 12 constituting a film detecting means is arranged at a position facing the perforation on the upper part of the perforation 8b, and a predetermined number of perforations are counted when the film 8 is loaded. There is. Then, when it is detected by the predetermined number of count signals that the film front end having an appropriate length has been fed out, the rewinding motor 6 is stopped, and then the winding motor 14 described later is driven to The film is wound by rotating the winding spool 9 in the film winding direction.

On the other hand, at the position close to the film winding chamber 7 on the back side of the film 8, the photographing information or the like is recorded in the magnetic recording portion 8a of the film 8 or the photographing information recorded in the magnetic recording portion. A magnetic head 13 for reproducing data is arranged so that it can be switched between a position in which it is pressed against the magnetic recording portion 8a and a position in which it is retracted by a clutch. This clutch is composed of a planetary clutch 15 which is arranged below the magnetic head 13 and is composed of a well-known planetary gear mechanism. The sun gear 16 has a reduction gear train 20 in between and a winding motor 14 of the winding motor 14. The rotational driving force is transmitted from the output gear 14a. The sun gear 16 and the planetary gear 17 that meshes with the gear 16 and revolves around the gear 16 while revolving around the same are connected by an L-shaped clutch plate 18.

That is, as shown in FIG. 2, the clutch plate 18 is formed of an L-shaped rocking lever, and the rocking fulcrum of the bent portion is rotated by the spindle 16a of the sun gear 16. A support shaft 17a of the planetary gear 17 is rotatably held at the tip of one arm 18a which is supported freely and extends rearward. A head holding plate 19 is movably mounted on the other arm 18b of the clutch plate 18 extending in a direction substantially perpendicular to the one arm 18a. The magnetic head 13 is fixed to. The other arm 18b is a film 8
When the magnetic head 13 is pressed against the magnetic recording portion 8a, the magnetic recording portion 8a swings to a position substantially parallel to the film 8.

The head holding plate 19 is formed in a strip shape, and is overlapped in the longitudinal direction of the other arm 18b to form the support shaft 16a.
A support hole 19a formed in the base portion near the side is rotatably inserted through a support shaft 21 fixedly planted on the other arm 18b. Further, a torsion spring 22 is attached to the support shaft 21.
The torsion spring 22 has one end fixed to the pin 23 fixedly mounted on the head holding plate 19 and the other end fixed to the other arm 1.
Each of the pins is fixed to each of the pins 24 fixed to the 8b, and gives the habit of moving the magnetic head 13 forward. However, the movement of the magnetic head 13 due to this behavior is
The flatness is prevented by the head holding plate 19 coming into contact with a stopper (not shown) provided on the other arm 18b, and only when the magnetic head 13 is brought into contact with the magnetic recording portion 8a of the film 8, the above-mentioned torsion spring is used. 22 gives the head 13 a habit of pressing the magnetic recording portion 8a.

Further, the one arm 18 of the clutch plate 18
A coil spring 27 is stretched between a and a stationary member of the camera. The coil spring 27 is provided for the magnetic head 1 when the transmission of the rotational driving force from the winding motor 14 serving as a driving means to the sun gear 16 is stopped.
An urging means for retracting the guide roller 3 and the guide roller 11 described below from the film is constituted.

As described above, in the planetary clutch 15 having the clutch plate 18, when the rotational driving force is transmitted to the sun gear 16, the planetary gear 17 revolves around the sun gear 16, and the clutch plate 18 is moved by the magnetic head 13. It is adapted to switch to a position where it comes into pressure contact with the magnetic recording portion 8a. At this switching position, the planet gear 17 is engaged with the locking gear 2
5 is engaged, and it rotates at that position. Further, when the clutch plate 18 is switched to the position for retracting the magnetic head 13 from the magnetic recording portion 8a by the biasing means, the planetary gear 17 meshes with the locking gear 26 at this switching position.

The arm 18a of the clutch plate 18 is
As shown in FIGS. 1 and 3, the end portion of the guide support shaft 2
8 is standing upright, and a film guide plate 10 whose base end is fixed to the support shaft 28 extends toward the circumference of the winding spool 9. The film guide plate 10 is formed of a relatively wide elastic thin plate, and a guide roller 11 which is in pressure contact with the circumference of the winding spool 9 is attached to the tip end of the film guide plate 10. In the film winding chamber 7 in which the winding spool 9 is provided, a guide elastic plate 31 whose base is fixed to the wall of the winding chamber and a pressing roller attached to the tip of the guide elastic plate 31 are provided. 31 are provided, and the film guide plate 10 and the guide roller 1 are provided when the film is rewound.
The guide roller 11 presses the film wound on the winding spool 9 so that the film does not slacken even when 1 is retracted.

A spool rotation gear 29 is connected to the winding spool 9, and the rotation gear 2
Reference numeral 9 is meshed with a transmission gear 30 that meshes with the sun gear 16 so that the rotational driving force is transmitted from the output gear 14a of the winding motor 14 through the reduction gear train 20, the sun gear 16, and the transmission gear 30. Has become.

In the magnetically recordable camera of the first embodiment having the above-described structure, when the film cartridge 1 is loaded into the film supply chamber 3, the rewinding motor 6 rotates in the direction opposite to the rewinding direction. Since the rewinding spool 1a is rotated in the direction opposite to that at the time of rewinding, the leading end of the film is automatically fed out from the inside of the cartridge 1. The fed-out film front end is stretched on the aperture 2a of the camera body 2 and then guided by the film guide plate 10 and the guide roller 11 to reach the winding spool 9 in the film winding chamber 7. At the time of loading the film, as shown in FIG. 4, the clutch plate 18 is pulled by the elastic tension of the coil spring 27 to rotate counterclockwise around the shaft 16a, and the planetary gear 16 also locks the gear 26. Meshes with. Therefore, the magnetic head 13 is moved away from the feeding path of the film 8 to a position retracted from the magnetic recording portion 8a, and the guide roller 11 is also moved to a position spaced from the circumference of the winding spool 9. ing.

As the leading end of the film 8 is fed, the number of perforations is counted by the photo interrupter 12, and the count signal is sent to a control means (not shown). Then, when the number of perforations reaches a predetermined number, the rotation of the rewinding motor 6 is stopped by the control means. Next, the winding motor 14 is driven by the control means, and the rotational driving force thereof is transmitted from the output gear 14a to the spool rotation gear 29 via the reduction gear train 20, the sun gear 16, and the transmission gear 30 for winding. The spool 9 is rotated in the film winding direction to wind the film.

At this time, the planet gear 17 revolves clockwise around the sun gear 16 and meshes with the locking gear 25 by the rotation of the sun gear 16 in the film winding direction. It rotates clockwise around the support shaft 16a against the elastic tension. When the clutch plate 18 rotates clockwise in this way, as shown in FIGS. 1 and 3, the magnetic head 13 on the other arm 18b moves to a position where it is pressed against the magnetic recording portion 8a of the spreading film 8,
The magnetic recording portion 8a is pressed. Then, the photographing information and the like for the photographed screen are magnetically recorded.

When the film 8 has been photographed and the photographed information has been magnetically recorded and the photographed film is to be rewound into the cartridge 1, the rotation of the winding motor 14 is stopped. Then, the driving force of the sun gear 16 to the planetary gear 17 is also cut off, so that the clutch plate 18 is rotated counterclockwise around the support shaft 16a by the contraction elastic force of the coil spring 27. As a result, the planetary gear 17 also revolves in the counterclockwise direction around the sun gear 16 and meshes with the locking gear 26. In this way, the clutch plate 18 is switched from the head pressure contact position to the head retracted position. In addition, as shown in FIG. 4, the guide roller 11 also includes the spool 9 for winding.
To a position away from. Therefore, the rewinding motor 6
When the rewinding spool 1a is rotated in the rewinding direction by driving, the photographed film can be smoothly rewound into the cartridge 1.

When it is desired to reproduce the magnetically recorded photographic information for confirmation or the like, the same operation as when the film is loaded may be performed after the magnetic head 13 is in the reproduction state.

FIGS. 5 and 6 show the essential parts of a magnetically recordable camera according to the second embodiment of the present invention. Unlike the camera of the first embodiment, this camera is not an automatic loading type camera in which the rewinding spool in the film cartridge is rotated in the reverse direction to feed the leading end portion of the film, but the film is loaded as usual. The present invention is applied to a camera.

In this embodiment, one gear of the reduction gear train for transmitting the driving force for film winding or film rewinding is used as the sun gear. For example,
One of the gears for film winding is the sun gear 16A, the planetary gear 17A is meshed with this, and the locking gears 25A and 26A for restricting the revolution range of the planetary gear 17A are arranged on both sides of the planetary gear 17A. The planetary clutch 15 is provided and the support shaft 16A of the sun gear 16A is installed.
A swinging fulcrum of a clutch plate 18A composed of an L-shaped lever is rotatably pivotally attached to a, and the support shaft 17Aa of the planetary gear 17A is rotatably mounted on the one arm 18Aa of the clutch plate 18A. The magnetic head 13A is attached on the head holding plate 19A. And one arm 18Aa
Is urged counterclockwise by the coil spring 27A.

With this construction, the clutch plate 18A is actuated by the elastic tension of the coil spring 27A until the film winding drive system operates, that is, while the rotation of the film winding motor is stopped. It rotates counterclockwise around the support shaft 16Aa, and as a result, as shown in FIG.
The position where the planet gear 17A revolves counterclockwise around the sun gear 16A and meshes with the locking gear 26A, that is,
The clutch plate 18A is switched to the retracted position of the magnetic head 13A.

Here, the film cartridge 1A is loaded into the film supply chamber 3A of the camera body 2A, and the film 8
The leading end of A is the spool 9 for winding in the film winding chamber 7A.
After winding around A, the film winding motor is driven to rotate. Then, as the sun gear 16A rotates in the film winding direction, the planetary gear 17A revolves clockwise around the sun gear 16A and meshes with the locking gear 25A, so that the clutch plate 18A resists the elastic tension of the coil spring 27A. Then, it rotates clockwise around the support shaft 16Aa. When the clutch plate 18A is rotated clockwise in this manner, as shown in FIG.
As shown in, the magnetic head 13A on the other arm 18Ab
Is moved to a position where it is pressed against the magnetic recording portion of the spreading film 8A, and is pressed against the magnetic recording portion. Therefore, it is possible to magnetically record the shooting information and the like for the shot screen.

When the filming of the film 8A and the magnetic recording of the filming information are completed and the film having been filmed is rewound into the cartridge 1A, the rotation of the winding motor is stopped. Then, the driving force of the sun gear 16A to the planetary gear 17A is also cut off, and as shown in FIG. 6, the clutch plate 18A rotates counterclockwise around the support shaft 16Aa by the elastic tension of the coil spring 27A. As a result, the planet gear 17A also revolves counterclockwise around the sun gear 16A and meshes with the locking gear 26A. In this way, the clutch plate 18A switches from the head pressure contact position to the head retreat position. Therefore, by driving the rewinding motor to rotate the rewinding spool in the rewinding direction, it is possible to smoothly rewind the photographed film into the cartridge 1.

In the above embodiment, one of the film rewinding gears is a sun gear. However, this is one of the film rewinding gears, which is a sun gear. When the magnetic head 13A is pressed by the film 8A and is stopped or rotated in the other direction, the clutch plate 18A is switched in the direction in which the magnetic head 13A releases the pressing on the film 8A by the elastic tension of the coil spring 27A. Of course, it is also good.

[0029]

As described above, according to the present invention, the planetary clutch is skillfully used to record the photographing information or the like on the magnetic recording portion of the film or reproduce the photographing information or the like recorded on the magnetic recording portion. Only at this time, the magnetic head is pressed against the magnetic recording section, and the magnetic head is moved to a position retracted from the magnetic recording section other than that, so that the space inside the camera is not taken up and there is no fear of increasing the cost. It is possible to provide a magnetically recordable camera having a magnetic head pressing means having a simple structure and high reliability, which eliminates the drawbacks of the related art.

Further, in the case of an automatic loading type camera in which the rewinding spool in the film cartridge is rotated in the reverse direction to feed the film front end, the magnetic head and the film guide member are used especially when the film front end is fed. It is possible to configure a feeding means for retracting and reliably feeding the film, and at the time of winding the film, the guide member is brought into contact with the winding spool and the magnetic head is pressed against the magnetic recording portion of the film. It is possible to provide a camera capable of magnetic recording capable of stable magnetic recording and reproduction at any time.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a magnetically recordable camera according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a planetary clutch in the magnetically recordable camera of the first embodiment.

FIG. 3 is a plan view of the essential parts of the magnetically recordable camera of the first embodiment.

FIG. 4 is a plan view showing a switching state of a planetary clutch in the magnetically recordable camera of the first embodiment.

FIG. 5 is a plan view of a main part of a magnetically recordable camera showing a second embodiment of the present invention.

FIG. 6 is a plan view showing a switching state of a planetary clutch in the magnetically recordable camera of the second embodiment.

[Explanation of symbols]

1 ……………… Film cartridge 1a ………… Spool 6 ……………… Rewinding motor (driving means, feeding driving means) 8 ……………… Film 8a ………… Magnetic recording section 9 ... ………… Spool for winding 10 ………… Film guide (film guide means) 11 ………… Guide roller (film guide means) 12 ………… Photo interrupter (movement amount detection means) 13 ………… Magnetic head 14 ... Winding motor (driving means, winding driving means) 15 ... Planetary clutch (magnetic head pressing means) 27 ... Coil spring (biasing means)

[Procedure amendment]

[Submission date] May 18, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

The arm 18a of the clutch plate 18 is
As shown in FIGS. 1 and 3, the end portion of the guide support shaft 2
8 is standing upright, and a film guide plate 10 whose base end is fixed to the support shaft 28 extends toward the circumference of the winding spool 9. The film guide plate 10 is formed of a relatively wide elastic thin plate, and a guide roller 11 which is in pressure contact with the circumference of the winding spool 9 is attached to the tip end of the film guide plate 10. In the film winding chamber 7 in which the winding spool 9 is provided, a guide elastic plate 31 whose base is fixed to the wall of the winding chamber and a pressing roller attached to the tip of the guide elastic plate 31 are provided. 32 are provided for the film guide plate 10 and the guide roller 1 when the film is rewound.
The pressing roller 32 presses the film wound on the winding spool 9 so that the film does not slacken even when 1 is retracted.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

Claims (2)

[Claims] 1. A magnetically recordable camera having a magnetic head for recording photographic information or the like on a magnetic recording portion of a film or reproducing the photographic information or the like recorded on the magnetic recording portion. To rotate the film in a predetermined direction to wind up the film, or to rotate the spool in the loaded film cartridge in a predetermined direction to rewind the film, and to rotate the spool by the driving device. Interlockingly, when the operation of the magnetic head pressing means for pressing the magnetic head against the magnetic recording portion of the film and the driving means are stopped, or the spool rotates in the direction opposite to the predetermined direction. While
A magnetically recordable camera comprising: a biasing unit that retracts the magnetic head pressing unit from the magnetic recording unit of the film. 2. A self-loading type camera configured to automatically feed out a film from an outlet of a loaded film cartridge, wherein a spool in the loaded film cartridge is rotated in a predetermined direction. A feeding drive means for feeding the film, a movement amount detecting means for detecting the movement amount of the fed film, and a film winding spool for setting a predetermined value when the output of the movement amount detecting means reaches a predetermined value. It has a winding drive means that winds the film by rotating it in the direction of, and a magnetic head for recording or reproducing shooting information in the magnetic recording part of the film, and is linked to the rotation of the spool by the winding drive means. Magnetic head pressing means for pressing the magnetic head against the magnetic recording portion of the film, and the magnetic head pressing means provided in the magnetic head pressing means. The film guide means for pressing the film toward the outer circumferential surface of the winding spool when the means moves in the direction of pressing the film, and when the drive means stops operating, or the spool is in a predetermined position. When rotating in the opposite direction to
A magnetically recordable camera comprising: a biasing unit that retracts the magnetic head pressing unit and the film guide unit from the film.