JP2646499B2 - Camera that can use film with magnetic storage and operating device applied to photographic film with magnetic storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention can use a film with a magnetic storage unit having a magnetic head for writing or reading information to or from a magnetic storage unit provided in the film. It relates to a device such as a camera.

(Background of the Invention) In recent years, there has been proposed a system that uses a film having a magnetic storage unit, and writes and reads information such as an aperture value, a title, and the like with a magnetic head in the magnetic storage unit.

However, when attempting to realize a camera having a configuration in which a magnetic head for writing or reading information to or from a magnetic storage unit of a film as described above is provided, the following problem arises.

1) If the magnetic head is left in contact with the film surface for a long time, the film will be deformed.

2) If photographing is performed in a state where the magnetic head is pressed against the film surface, the image quality deteriorates because the flatness of the film is poor.

3) When carrying the camera, for example, when walking with the camera hanging from the neck, vibrations are transmitted to the camera, and the magnetic head moves delicately, damaging the magnetic storage unit of the film with the magnetic head, and causing various accidents. Cause

(Object of the Invention) The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a camera that can use a film with a magnetic storage unit and that can prevent inconvenience that a magnetic head gives to a film. Things.

Another object of the present invention is to provide an operating device applied to a photographic film with a magnetic storage unit, which can prevent the inconvenience given to the photographic film by the magnetic head.

(Features of the Invention) In order to achieve the above object, the present invention relates to a magnetic head for transmitting magnetic information to and from a magnetic storage unit of a film in a camera capable of using a film with a magnetic storage unit. And a motor, a gear system for transmitting a driving force of the motor, and the magnetic head moved by the gear system so that the magnetic head can transmit magnetic information to and from a magnetic storage unit of a film. When moving means for bringing the positional relationship between the magnetic storage portion of the film and the magnetic head to transmit magnetic information between the magnetic head and the magnetic storage portion of the film,
A camera having control means for driving the motor and moving the moving means so that the magnetic head and the magnetic storage part of the film approach by the gear system.

In order to achieve the above object, the present invention provides an actuator applied to a photographic film with a magnetic storage unit, wherein a magnetic head for transmitting magnetic information to and from a magnetic storage unit of the photographic film, A motor, a gear system for transmitting a driving force of the motor, and a magnetic system which is moved by the gear system so that the magnetic head can transmit magnetic information between the magnetic storage unit of the photographic film and the magnetic head. When the magnetic head transmits magnetic information between the magnetic head and the magnetic storage unit of the photographic film, the motor drives the motor, and the gear system controls the magnetic system. An actuating device having control means for moving the moving means so that the head and the magnetic storage unit of the photographic film approach each other.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 2 is a view showing a main part mechanism of a camera according to one embodiment of the present invention. In FIG.
It has a curved portion 1a, 1b, 1c, 1d, 1e, 1f, and the curved portion 1f has a long groove 1g,
1h is formed, and pins 6 and 7 provided on the camera body are slidably fitted to this. Reference numeral 2 denotes a shaft provided between the curved portions 1a and 1b, and reference numeral 3 denotes a roller made of an elastic material, which is rotatably supported by the shaft 2. Reference numeral 4 denotes a shaft provided between the curved portions 1c and 1d, and reference numeral 5 denotes a roller made of an elastic material, which is rotatably supported by the shaft 4. Reference numeral 8 denotes a motor, and a pinion 9 meshing with a rack 1i provided on the bent portion 1f is fixed to the tip of the motor. When the motor 8 rotates, the head base plate 1 is guided by pins 6,7. To move in the direction of the arrow. Reference numeral 10 denotes a magnetic head for writing information to a magnetic storage unit provided on the film. The magnetic head 10 has a bottom portion 10a fixed to the curved portion 1e. At this time, it is fixed flush with the rollers 3,5.

Reference numeral 12 denotes a holding ground plate, and curved portions 12a, 12b, 12c, 12d (not shown), 12
In the curved portion 12e, long grooves 12f and 12g are formed, and pins 17 and 18 provided on the camera body are slidably fitted in the long grooves 12f and 12g. Reference numeral 13 denotes a shaft provided between the curved portions 12a and 12b, and reference numeral 14 denotes a roller made of an elastic material, which is rotatably supported by the shaft 13. Reference numeral 15 denotes a shaft provided between the curved portions 12c and 12d, and reference numeral 16 denotes a roller made of an elastic material, which is rotatably supported by the shaft 15. Reference numeral 19 denotes a motor, and a pinion 20 that meshes with a rack 12h provided on the curved portion 12e is fixed to the tip of the motor.The rotation of the motor 19 guides the holding ground plate 12 to the pins 17, 18. To move in the direction of the arrow.

FIG. 3 has the above-described mechanism in the camera,
FIG. 4 is a cross-sectional view of a camera showing an embodiment of the present invention using a patrone housing in which all films are stored, that is, a leader portion is not protruded. In FIG. 3, reference numeral 50 denotes a camera body; It has a chamber 50a, a spool chamber 50b, and an aperture 50c. 51 is the patrone casing described above, 52
Is a patrone housed in a patrone housing 51, 53 is a photographic lens, 54 is a spool, 55 is a pressure plate, and 56 (FIG. 5) is a film having a magnetic storage unit (not shown).

FIG. 1 is an electric circuit block diagram of a camera according to the present embodiment. In FIG. 1, reference numeral 101 denotes a control circuit that controls the entire camera, and 102 denotes a feeding motor 110 that performs film winding and rewinding.
, A film feed drive circuit for driving, 103 a photometric circuit, 104
Is a distance measuring circuit, 105 is a shutter control circuit, 106 is an aperture control circuit, 107 is a head ground plate drive circuit that controls the driving of the motor 8 in FIG. 2 and sets the position of the head ground plate 1, 10
Reference numeral 8 denotes a presser ground plate driving circuit for controlling the driving of the motor 19 shown in FIG. 2 to set the position of the presser ground plate 12, and 109 denotes a magnetic recording circuit for controlling the magnetic head 10 shown in FIG.
SW1 is a switch for starting photometric distance measurement, and SW2 is a release switch.

Next, the above configuration will be described with reference to the flowchart of FIG.

When the patrone casing 51 is inserted into the patrone chamber 50a, the film 56 is pushed out from the patrone casing 51 by fork driving, and the film is wound around the spool. That is, a known auto-loading (AL) operation is performed (step 201). At this time, the head base plate 1 and the holding base plate 12 are retracted away from the film 56 as shown in FIG. Thereafter, the specified number of frames of the film 56 is read (step 202). Next, it is determined whether or not the switch SW1 is turned on. If the switch SW1 is turned on, the process proceeds to step 204, where the photometry circuit 103 and the distance measurement circuit 104 are operated to obtain photometry and distance measurement information. Then, step 205
It is checked whether or not the release switch SW2 is turned on. If it is turned on, the process proceeds to step 206, where the shutter control circuit 105 and the aperture control circuit 106 are operated to perform known exposure control. If the switches SW1 and SW2 are not turned on, the process returns to step S3.

When the end of the exposure operation is detected, the process proceeds to step 207, where the motors 8 and 19 are respectively rotated forward through the head ground plate driving circuit 107 and the holding ground plate driving circuit 108 to move the head ground plate 1 and the holding ground plate 12 to the fifth position. In the state shown in the drawing, that is, the magnetic head 10 is brought into contact with a magnetic storage unit (not shown) of the film 56, and the rollers 3, 5, and 14, 16 are pressed against the surface of the film 56, and the film 56 is pressed by a predetermined force. Do not sag. Next, the process proceeds to step 208, where the film feed drive circuit 1
The feed motor 110 is driven via 02 to wind up one frame. At this time, the magnetic head 1 via the magnetic recording circuit 109
Drive 0 to magnetically write desired information to the moving magnetic storage unit. Next, in step 209, it is checked whether or not the winding of one frame has been completed. If not, the operation of the previous step 208 is repeated. Thereafter, when the completion of winding of one frame is detected, the process proceeds to step 210, where the power supply to the motors 8 and 19 is reversed through the head ground plate driving circuit 107 and the holding ground plate driving circuit 108, and the head is returned to the state shown in FIG. After the main plate 1 and the holding main plate 12 are returned, the power supply to these is cut off. Next, in step 211, it is determined whether or not the specified number of frames has been completed. If not, the process returns to step 203. On the other hand, when it is detected that the specified number of frames has been completed, the process proceeds to step 212, where the film feeding drive circuit 1
The feed motor 112 is driven via 02 and the rewinding of the film 56 is started. The head base plate 1 during film rewinding
FIG. 6 shows the positional relationship between the holding ground plate 12 and the like.

FIG. 7 is a sectional view of a camera showing another embodiment of the present invention, in which the same parts as those in the above embodiment are denoted by the same reference numerals.

The difference from the above embodiment is that the head base plate 62 and the holding base plate 65
Position control of plunger 63, spring 64 and plunger
60 and a spring 61. FIG. 8 is a view showing a state in which information is written to a magnetic storage unit (not shown) provided on the film 56 by the magnetic head 10 while the film is being wound by the camera shown in FIG. The position of the holding plate 62 and the holding plate 65 is controlled to the state shown in FIG.

According to the above embodiments, the magnetic head 10 is retracted from the surface of the film 56 except when writing information during film winding, so that the leading end of the film collides during auto loading and malfunctions are not performed normally. The magnetic head 10 wears during film rewinding, the magnetic head 10
This eliminates problems such as damaging the film surface while carrying the camera.

(Correspondence between Invention and Embodiment) In the above embodiment, the magnetic head 10 is used as the magnetic head of the present invention, the motors 8 and 19 are used as the motors of the present invention, and the racks 1i and 1 are used.
2h and the pinions 9 and 20 are attached to the gear system of the present invention,
And the holding ground plate 12 is a moving means of the present invention, a control circuit 101,
The head ground plate drive circuit 107 and the holding ground plate drive circuit 108 correspond to the control means of the present invention, respectively.

(Effects of the Invention) As described above, according to the present invention, it is possible to provide a camera that can use a film with a magnetic storage unit and that can prevent inconvenience that a magnetic head gives to a film.

Further, according to the present invention, it is possible to provide an operating device applied to a photographic film with a magnetic storage unit, which can prevent inconvenience given to a photographic film by a magnetic head.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration of a camera according to an embodiment of the present invention. FIG.
FIG. 4 is a cross-sectional view of the camera, FIG. 4 is a flowchart showing the circuit operation of FIG. 1, and FIGS. 5 and 6 show the positional relationship between the members of the camera of FIG. 7 and 8 are cross-sectional views of the camera showing the positional relationship of each member according to another embodiment of the present invention. 1 ... head base plate, 8 ... motor, 10 ... magnetic head,
12 ... presser base plate, 19 ... motor, 50a ... patrone chamber, 51 ... patrone housing, 56 ... film with magnetic storage unit, 62 ... head base plate, 65 ... presser base plate, 61, 64
…… Spring, 101… Control circuit, 107… Head base plate drive circuit, 108… Presser base plate drive circuit.

Claims (2)

(57) [Claims] 1. A camera which can use a film with a magnetic storage unit, a magnetic head for transmitting magnetic information to and from a magnetic storage unit of the film, a motor, and a driving force of the motor. Gear system, and the gear system is moved by the gear system to bring the magnetic head closer to the magnetic storage unit of the film so that the magnetic head can transmit magnetic information between the magnetic head and the magnetic storage unit of the film. Moving means, when the magnetic head transmits magnetic information between the magnetic storage unit of the film, the motor is driven so that the magnetic head and the magnetic storage unit of the film approach by the gear system. Control means for moving the moving means. 2. An actuating device applied to a photographic film with a magnetic storage unit, comprising: a magnetic head for transmitting magnetic information to and from a magnetic storage unit of the photographic film, a motor, and a driving force of the motor. A transmission gear system and a positional relationship between the magnetic head and the magnetic storage unit of the photographic film moved by the gear system so that the magnetic head can transmit magnetic information between the magnetic storage unit and the magnetic storage unit of the photographic film. When the magnetic head transmits magnetic information between the magnetic head and the magnetic memory unit of the photographic film, the motor is driven, and the magnetic head and the magnetic memory unit of the photographic film are moved by the gear system. And control means for moving the moving means so as to approach each other.