JPH0442872B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electronic camera, and particularly to a housing storage chamber for storing an optical system for an image sensor of an electronic camera and a recording body for recording an image signal obtained from the image sensor. Regarding the placement of

<Prior Art> Recording and reading information on a moving information storage medium, such as magnetic recording, requires relative movement between the recording/reading head and the storage medium.

The relative velocity between the head and the surface of the recording medium can be approximately 13.97 meters per second, such as in video applications. To achieve maximum performance, the recording/reading head and the media surface must be in close contact and in contact without destroying or excessively abrading the magnetic field-sensitive coating on the recording media. must be done.

Therefore, the conventional method of bringing the recording/reading head into close contact with the medium surface is to increase the contact pressure between the head and the storage medium, but this method is undesirable because it causes severe wear on the medium and the head. This problem is especially serious when the head is in continuous contact with the storage medium for one frame in order to present a still image in video. That is,
For example, if the storage medium is made of a magnetic disk, and this magnetic disk is rotating at 3600 rpm, then if a static image is presented for 5 minutes, the same track on the magnetic disk will be rotated approximately 18,000 times. The close contact between the magnetic disk and the head very quickly wears down the tracks on the magnetic head, destroying the information magnetically stored on the tracks.

Several methods have been proposed in the past to solve this problem between the head and the disk. One of them is to use a hard flat magnetic disk and a floating head for the magnetic disk. The method involves softening the large surface of the head and burying it in a flexible "floppy" magnetic disk. However, the former method requires a hard material as the substrate forming the magnetic disk, which is usually made by plating aluminum with a thickness of about 0.254 μm and coating it with a material sensitive to magnetic fields such as nickel-cobalt. It is also coated with 0.127μm rhodium plating for wear protection. Magnetic disks formed in this way are very expensive, and
To prevent excessive wear, it is necessary to configure the magnetic head to float on an air cushion when the disk rotates at full speed to prevent excessive wear. The distance between the magnetic head and the magnetic disk is normally required to be between 0.889 and 1.27 μm, and the delicate balance of the force that keeps the magnetic head floating against the surface of the magnetic disk is required to prevent fine dust. It can be disturbed by particles or fingerprints,
This may cause the magnetic head to violently collide with the magnetic disk.

Therefore, magnetic disks of this type cannot be handled without gloves and are usually handled in a special clean room environment and usually sealed in an empty container. In order to avoid this collision between the magnetic head and the magnetic disk, increasing the flying height of the magnetic head with respect to the magnetic disk will reduce the risk of head damage, but since the distance will be greater, the performance will be limited except for low frequency digital applications. deteriorates. As can be seen from the foregoing, the method of using a hard magnetic disk and having the head levitated over the magnetic disk is unsuitable for low cost, high capacity consumer applications such as video recording.

On the other hand, the latter method can solve the problems of handling and price in magnetic disk devices, which are problems with the former method, but the recording/reading magnetic field for floppy magnetic disks still remains. The head is relatively large to provide an interface consisting of a large profile head embedded in a soft, flexible medium. The large surface area of the read/write head reduces force per unit area, which helps reduce media wear and distance loss, so air collects between the magnetic head and the drum as the media moves past the magnetic head. to form a thin film. The thickness of this air film is a function of the radius of the tension head surface of the medium, the viscosity of the air, and the relative velocity of the disk head.
Approximately, the following formula is obtained.

h=0.642 [6μvR/T] ^3/2 h: Thickness of air film R: Radius of head surface
V: relative velocity T: medium tension μ: viscosity of air Therefore, the use of most flexible "floppy" magnetic disks is limited to low speed, low bandwidth digital computer applications. Therefore, flexible or "floppy" magnetic disks have not been used in conventional video.

However, recently, even when flexible magnetic disks are used in electronic photographic devices such as video cameras and electronic image reproducing devices, it is possible to improve performance without excessively wearing out the recording surface of the magnetic disk or the magnetic head. An apparatus is proposed that includes a flexible magnetic disk that enables continuous long-term recording and playback of broadband signals from the flexible magnetic disk without sacrificing
This can be seen in, for example, Japanese Patent Laid-Open No. 109914/1983.

The newly proposed prior art device is
It is shown in FIGS. 1, 2, and 3, and its principle is shown in FIGS. 4 to 6. 4 to 6 showing the principle of the device according to the prior art; information is recorded or A reading device is shown. This device is equipped with a base body 2 having a smooth surface 2a curved in only one direction in a semicylindrical shape. Before being rotated, the information storage medium 1 is held on a horizontal plate as shown in FIG. It rotates on a curved surface. The information storage medium 1 includes a central mounting portion 1a and a storage portion 1a in which information is stored.
The surface 1b of the storage portion 1b is coated with a magnetic flux sensitive material for information storage, and
The center folding portion 1a has a pair of openings 1a ₂ and 1a ₃ for connecting the recording medium 1 to a rotational drive device that provides rotational speed to the information storage medium 1, and an opening for loading the storage medium 1 into a cartridge. 1a ₁ is provided.

To store and reproduce information on the storage medium 1, the magnetic disk 1 is rotated, and the magnetic disk 1 is
follows the curved surface of the surface 2a of the base body 2, the vertex of the storage portion 1b of the magnetic disk 1 (T-T in FIG.
This is achieved by placing the surface 1A of the magnetic disk 1 and the magnetic head 3 in contact with each other at selected positions along the line 1.

A prior art device using such a principle is shown in FIGS. 1-3. In the apparatus shown in FIG. 1, a base body 2 is held in an outer container 4, and a magnetic disk 1 is placed in the outer container 4 to form a cartridge. A magnetic head 3 is inserted into the outer container 4 and has an opening for contacting the surface of the magnetic disk 1 at the upper part of the outer container 4 of this cartridge. It has a shaped shaft 4a. This shaft 4a has extensions 4a _{1 and} 4a ₂ which are smaller than the opening 1a 1 of the magnetic head 3 and larger than the opening 1a ₁ of the magnetic head 3. The opening 1a ₁ of the magnetic disk 1 is inserted through this shaft 4a, and the extension portions 4a ₁ , 4 of the shaft 4a are inserted through the shaft 4a.
The magnetic disk 1 is rotatably held on the shaft 4a at _a2 . The base body 2 also has an opening 2C into which the rotary drive shaft 5 is inserted at a position corresponding to the central mounting portion 1a of the magnetic disk 1 held by the shaft 4a.
is provided. In this way, magnetic disk 1
The device that handles the magnetic disk 1 with respect to the shaft 4a.
is rotatably supported on a shaft 4a, and there is no relative positioning means between the shaft 4a and the magnetic disk 1 when the magnetic disk 1 is at rest. When this handling device is loaded into an electrophotographic device or an electronic image reproducing device, the rotational drive shaft 5 provided in the electrophotographic device or electronic image reproducing device enters through the opening 2C of the base body 2. However, the pin members 5a and 5b provided at the tip of the rotary drive shaft 5 are connected to the openings 1a ₂ and 1a ₃ of the magnetic disk 1.
is placed in a position where it can be engaged with.

<Problems to be Solved by the Invention> However, in the so-called electronic camera that records video signals on a recording medium in a flat handling device as described above, the flat recording case and the storage chamber for the recording case are Since it occupies a relatively large area and the mechanism for recording on the recording medium occupies a large proportion of the camera, the location of its arrangement has been a major problem.

Further, the arrangement of an optical system for forming a subject image on an image sensor and a finder system for observing the subject image has also been a major problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide an electronic camera having a novel and efficient arrangement, easy to use, and capable of stably capturing images.

<Means and Effects for Solving the Problems> In order to achieve the above-mentioned object, the electronic camera of the present invention includes a finder system for observing a subject, an optical system that guides a luminous flux from the subject to an image sensor, and the optical system. and a storage chamber for a plate-shaped recording casing disposed at a position laterally away from the optical path of the image sensor, and an electronic device for recording an imaging signal obtained from the image sensor on a recording medium in the plate-shaped recording casing. In the camera, the optical system and the viewfinder system are placed side by side in the longitudinal direction of the storage chamber in the normal use position of the camera, and the camera is further arranged in the storage chamber by a user in the normal use position. The camera body is characterized in that the storage chamber, the optical system, and the viewfinder system are integrally formed within a camera body shaped so as to be able to sandwich the chambers.

<Example> Examples of the present invention will be described below.

First, before describing an embodiment of the present invention (exemplarily shown in FIGS. 9 to 12), an information storage medium handling device used in the apparatus of the embodiment of the present invention will be explained.

FIG. 7a shows a first embodiment of the sheet-like information storage medium handling device according to the present invention.
Figure a is a sectional view taken along the line X-X of Figure 7a, Figure 8b
7a is a sectional view along the Y-Y line in FIG. 7a.

6 is a general term for the entire handling device. 7 is a housing, 8 is a rotating shaft, 9 is a magnetic disk formed of a flexible member, and 10 is a base body. The housing 7 has a recess 7a in which the rotating shaft 8 is disposed, and a magnetic head in the storage chamber enters when the device 6 is loaded into the storage chamber of an electrophotographic device or an electronic image reproduction device. Slot-shaped opening 7b
In addition, there are positioning holes 7C ₁ and 7C ₂ into which the positioning pins provided in the storage chamber are inserted. An engaging portion 7e is provided with which a finger or the like is engaged when removing the section 7d that is cut out when it is desired to prohibit the storage of new information and the device 6 loaded in the storage chamber.

The base body 10 is fixed to the housing 7, has a semicylindrical shape with only one side curved, and has a smooth surface 10a. and the smooth surface 1 of the base body 9
On the 0a side, there is a cylindrical protrusion 10b through which the magnetic disk 9 is rotatably inserted into a central opening formed in the central mounting portion 9a of the magnetic disk 9.
An annular recess 10C is provided to surround the projection 10b, and a plurality of holes 10C ₁ and 10C ₂ that open to the outside of the base body 10 are provided on the bottom surface of the recess 10C. There is.
The rotating shaft 8 is rotatably supported by the housing 7. One end of the rotating shaft 8 is provided with a toothed portion 8a having sharp teeth, which is disposed in the recessed portion 7a of the housing 7 and whose surface is greatly undulated. The concave portion 10C of the base body 10 passes through the plurality of holes 9a ₂ and 9a ₃ provided near the center opening of the center mounting portion 9a.
a portion 8 having protruding pins 8b ₁ and 8b ₂ extending inward;
b is provided.

The sheet-shaped information storage medium handling device configured in this manner is loaded into an electrophotographic device or an electronic image reproducing device in the state shown in FIGS. 7a and 8a and 8b. . Before being loaded into an electrophotographic device or an electronic image reproducing device, and even after being loaded, in a state where the rotating shaft 8 is not rotated, the magnetic disk 9 is horizontal as shown by the solid line in FIG. 8b. When the rotating shaft 8 rotates in response to the rotational force of the rotational drive shaft of the electrophotographic device or the electronic image reproducing device, the pins 8b ₁ , 8 of the rotating shaft 8
Since b ₂ and the magnetic disk 9 are engaged through 9a ₂ and 9a ₃ , the magnetic disk 9 is rotated and the disk 9 is aligned with the surface 10a of the base body 10. Further, when the handling device 6 is stored in the storage chamber of an electronic photographic device or an electronic image reproduction device, the positioning holes 7c ₁ and 7C ₂ of the device 6 are engaged with the positioning pins protruding into the storage chamber. , a surface provided on the rotary drive shaft on the side of the storage chamber such that the surface is positioned in a predetermined position within the storage chamber and is adapted to engage with the teeth of the rotation shaft 8 of the device 6; The tooth portion 8a of the rotary shaft 8 is engaged with the tooth portion 8a of the rotating shaft 8, which has sharp teeth with large undulations.

Further, the magnetic head protruding into the storage chamber enters from the opening 7b of the housing 7 and comes into contact with a portion of the magnetic disk 9 corresponding to the apex of the base body 10. As described above, in the handling device according to the present invention, unlike the conventional handling device in which the rotary drive shaft is provided with a pin that engages and disengages the sheet-like magnetic disk, the handling device always holds the sheet-like magnetic disk 9 in advance. a rotating shaft 8 having a pin engaged with
is provided in the device 6, and power is transmitted between the electrophotographic device or the electronic image reproduction device 6 by simply connecting and disengaging the rotary shaft 8 and the rotational drive shaft. Alternatively, it is possible to achieve power transmission between the drive device on the side of the electronic image reproducing device and the magnetic disk 9, and moreover, the central mounting portion 9 of the magnetic disk 9
A etc. will not be damaged. Furthermore, housing 7
11 ₁ , 11 ₂ , 11 provided on the outer surface of
Reference numeral ₃ denotes an information display section for displaying, for example, the type of magnetic material of the magnetic disk 9 housed in the device 6.

FIG. 7b shows an embodiment achieved by changing only the shape of the housing 7 of the device 6 shown in FIG. 7a. The device 6' of this embodiment is suitable for use with the surface of the housing 7 provided with the opening 7b as the entrance surface to the storage chamber of an electrophotographic device or an electronic image reproduction device. The embodiment of the device 6' shown in FIG. 10 is an embodiment in which the surface 7a provided with the opening 7'b of the housing 7' can be used as an entrance surface for the storage chamber. The surface 7B ₁ is formed with a tapered surface 7B ₁ .

FIGS. 9 to 12 show an electronic photographic device (hereinafter abbreviated as a camera) according to an embodiment of the present invention suitable for using the handling device shown in FIG. 7a.
FIG. 10 is a front perspective view of the camera, FIG. 9 is a back perspective view, and FIG. 11 is a diagram showing the internal structure of the camera. FIG. 12 is a perspective view of the device storage chamber 76 of the camera shown in FIG. 9 when the device storage chamber lid 70 is opened.

In FIG. 10, reference numeral 61 denotes a normal interchangeable lens, which is provided with adjustment parts necessary for normal photography, such as a distance adjustment ring and an aperture. 62 is formed on the camera body 63 so as to be able to engage with the rear end of the interchangeable lens 61. 94 is a half mirror. Reference numeral 63a denotes a camera holding portion formed in a part of the main body, and is formed in a shape that makes it easy to take pictures by hand. 64 is a power switch for this camera. Reference numeral 64' denotes a release switch disposed between the rotation shaft of the power switch and the shaft. 6
Reference numeral 5 denotes a head access command device (not shown) composed of, for example, a liquid crystal analog display for specifying an address of a portion of the image storage provided on the image storage medium to be reproduced and monitored for head access; When the button 66 is continued to be pressed, the addresses of the recorded images are displayed sequentially starting from 1, for example, by means not shown, and when the address of the desired recorded image is reached, the button 66 is released. The head 11 accesses the image recording portion at the current address, reproduces the image, and enables monitoring.

67 is a recording switching button. The functions of the head access command device 65 during playback, that is, when the recording switch button is set to the PLB position shown in the figure, are as described above, but when the camera is in the image recording state, that is, when the recording switch When the button 67 is set to the MTR position shown in the figure, the display corresponds to the address where the head is located and functions as a sheet number counter. At this time, even if button 66 is pressed, the display is not affected in any way. 68 is an LC matrix display, and 73 is a shutter that protects the display 68 from contamination and mechanical shock when it is not in use, and is shown in an open state in the figure. Since the display 68 is disposed on the rear side of the camera as shown in the figure, it is extremely convenient for observing the display. 69 is an optical viewfinder eyepiece, which includes a viewfinder eyepiece shown as 69', which can be used for power saving purposes or when an LC matrix display is not available for some reason; is already well known, and can be arranged as a finder structure of a normal single-lens reflex camera in the original optical path reflected by the semi-transmissive mirror 94. In this case, the photoelectric conversion element 9
5 can be arranged by providing an auxiliary prism 92 on one surface of a normal pentataha prism 90, as shown in FIG. Reference numeral 70 designates an opening/closing lid of a storage chamber that houses the handling device 6 having the image storage medium 9 that can be opened and closed around a hinge 71 fixed to a part of the main body 63, 70a is a locking member of the lid, and 70b
is a storage chamber viewing window made of transparent plastic, for example, and is useful for confirming the presence or absence of the device 6. Reference numeral 72 denotes a flash unit of a strobe device, and an electronic contact point 72a for transmitting and receiving signals with the camera.
is provided. FIG. 11 is a sectional view of the camera, showing a state in which the device 6 is stored in the device storage chamber 76. As shown in the figure, the storage chamber 76 is arranged on the rear side of the camera, and is arranged to be juxtaposed with an optical system consisting of a semi-transmissive mirror 94 and an eyepiece 69 on the left side when viewed from the rear of the camera. Therefore, the thickness of the camera can be reduced, and operability is improved. A device holding spring 74 is attached to the opening/closing lid 70.
is provided, and in the closed upper state, the spring 74 acts to restrict the device 6 to the normal position. In the illustrated state, the magnetic disk 9 in the device 6 is in contact with the magnetic head 91. 77 is a positioning pin fixed to a part of the main body;
It engages with the positioning hole 7C provided in the. A motor 14 rotates the storage medium 9, and in this embodiment, it is shown as a flat motor due to the structure of the camera. A small diameter pulley 80 is fixed to the output shaft 79 of the motor. 83 is bearing 8
4, and a large-diameter pulley 82 is fixed to the rotation drive shaft 83. 81 is a power transmission belt stretched between pulleys 80 and 82. With such a structure, electric power controlled by a motor drive circuit (not shown) is supplied to the motor 94, and when the motor 94 rotates, the rotation drive shaft 85 is supplied to the motor 94 via the pulley 80, belt 81, and pulley 82. is rotated, and further, the rotation of the rotary drive shaft 86 is transmitted to the rotation shaft of the device 6, and the magnetic disk 9, which is an image storage medium, rotates at a constant speed. When this storage medium rotates at a constant speed,
Information on the storage medium 9 is reproduced or information is stored on the storage medium 9. Reference numerals 87, 88, and 89 are examples of the head access mechanism 16, and show the structure of a sliding member 89 having a rack 81a that meshes with a small and large wheel 88 fixed to the shaft of a motor 87. Since the sliding member 89 is constructed integrally with the head 91, it is clear that the head 11 moves over the storage medium 9 by the forward and reverse rotation of the motor 87, and the motor is controlled by control signals from the head access circuit. By rotating, a random access operation of the head is performed. Incidentally, the motor 87 is preferably a pulse motor, which can be more easily controlled. Reference numeral 90 denotes a penta-roof prism constituting an optical viewfinder. A small prism 92 is fixed to a part of the prism, and a photoelectric conversion element 95 is arranged on the prism 92. The photoelectric conversion element 95 is optically arranged so that light passing through the pentagonal roof prism 90 and the small prism 92 reaches it.

FIG. 13 is a plan view showing an embodiment of an electronic image reproducing device suitable for using the handling device according to the present invention shown in FIGS. ' indicates an open state.
In FIG. 13, 102 is an image information display screen of a television cathode ray tube, 91' is a magnetic head,
The magnetic head 91' is sequentially and intermittently sent toward the rotating shaft 85 side. 77 is a positioning pin protruding from the storage chamber 76' that houses the device 6;
When the device 6 is loaded into the storage chamber 96', the pin 77' engages in the positioning holes 7C ₁ and 7C ₂ of the device 6, and positions the device 6 at a predetermined position in the storage chamber 96'. It is for the purpose of

In such an electronic image reproducing device which is an embodiment of the present invention, devices 6 and 6' as shown in FIGS. When it is inserted from the surface side corresponding to the tooth part 8a of No. 8,
Teeth 8a of the rotating shaft 8 provided on the device 6, 6' side
The rotational drive shaft 85a provided on the image reproduction device 101 side is engaged with the rotational drive shaft 85a, and the rotational force of the rotational drive shaft 85 can be transmitted to the rotational shaft 8 of the device 6, 6', and the magnetic head 91 is Opening 7 of the device 6, 6'
Enter the device 6, 6' from b and insert the magnetic disk 9.
It becomes possible to contact with.

FIG. 14 shows a suitable arrangement for an electronic photographic storage and reproduction system using the handling device 6' shown in FIG. 7b. This mechanism is suitable for using the surface 7B of the housing 6' as an entry surface, and it goes without saying that it is applicable to both the electronic photographic device and the electronic image reproducing device. However, as an example, a case where the present invention is applied to the electrophotographic apparatus shown in FIGS. 9 to 12 will be described.

In FIG. 14, the handling device 6' is loaded into the device storage chamber 76 with the front surface 7b of the handling device 6' being the entry side. 77' ₂ is a positioning pin that is engaged with the positioning hole 7C ₁ of the device 6' when the device 6' is loaded, and the positioning pin 77' ₂ is always held inward by the spring 31. Forced. _77'1 is a positioning pin that is engaged with the positioning hole _7C2 of the device 6' when the device 6' is loaded, and a fork member 32 is provided at the other end of the pin _77'1 . The fork portions of the fork member 32 are provided on the head support member 33 33 ₁ , 33 ₂
placed in between. Reference numeral 89' denotes a sliding member that can be slid while being guided by an elongated hole 89b that is engaged with the fixing pin 34. This sliding member 89' is connected to a gear 88 that is fixed to the output shaft of the stepping motor 87. Move through. The head support member 33 has a long hole 33a that is guided by a pin 35 implanted in the slide member 89', so that the head support member 33 can be slid up and down. Reference numeral 83 denotes a rotational drive shaft, and a toothed portion 85 that can engage with the toothed portion 8a of the rotating shaft 8 of the loaded device 6'.
It has a. Furthermore, the rotary drive shaft 83 is slidable on the pulley 82', and when the rotary drive shaft 83 moves downward, an engagement groove 82' engages with the pin 83 ₁ of the rotary drive shaft 83. It has a. When the pin 83 ₁ and the engagement groove 82'a are engaged, the driving force from the motor is transmitted to the rotating pulley 82' via the belt 81' to the rotary drive shaft 83.

Reference numeral 36 denotes a leaf spring having one end fixed and the other end free, and the leaf spring 36 constantly urges the rotation 83 and the positioning pin 77' ₁ downward.

In the mechanism configured in this manner, when the device 6' is not loaded in the storage chamber 76, the head 91, the rotating shaft 83, and the positioning pin _77'1 are moved into the storage chamber 76 by the biasing force of the leaf spring 36. It stands out. When the device 6' is loaded into the storage chamber 76, the positioning pin _77'1 is first pushed up against the biasing force of the leaf spring 36 on the tapered surface _7B1 of the loading device 6'. In conjunction with this pushing-up operation of the positioning pin 77' ₁ , the head support member 33 moves upward via the fork member 32, and the head 91 begins to exit from the storage chamber 76. Further, in response to the upward displacement of the leaf spring 36 due to the withdrawal of the positioning pin _77'1 , the rotary shaft 83 is also pushed up by the leaf spring 36, and the groove 82'a of the pulley 82' and the rotary drive shaft are pushed up. The engagement with the member 83 ₁ on 83 is released. Then, when the device 6' is completely loaded and the positioning pins 77' ₁ , 77' ₂ are completely loaded into the holes 7C ₁ , 7C ₂ of the device 6', the positioning pins 77' ₁ , 7
7' ₂ is entered into the device 6', the magnetic head 9
The one-rotation drive shaft 83 moves downward, and the head 91
is engaged with the magnetic disk 9, and at the same time, the teeth 85 of the rotary drive shaft 83 are engaged with the teeth 8a of the rotary shaft 8 in the device 6', and a gap is created between the rotary drive shaft 83 and the rotary shaft 8. A power transmission relationship is formed.

In this way, in this embodiment, as the device 6' is loaded, the magnetic head 91 and the rotary drive shaft 8
The teeth 85 of No. 3 escape to the outside of the storage chamber 76, and the device 6'
The magnetic head 91 is attached to the device 6' only when the device 6' is fully loaded into position.
Since the teeth 85 and 85 are cut into the device 6', insertion of the device 6' is allowed from a direction perpendicular to the axis of the rotary drive shaft 85.

15 and 17 is a pen attached selectively or from the beginning to the magnetic head 91, and the pen 36 visually traces the trajectory of the magnetic head 91 on the magnetic disk 9. The used track on the magnetic head 91 can be determined by matching the part written with this pen 91 to the scale 7f that is graduated along the extension direction of the opening 7b in the device 6'. It makes it possible.

FIG. 17 shows an improved head device used in the above-mentioned electrophotographic device or electronic image reproducing device. In this embodiment, a head device 91, a pen 3
A counterweight device 39 having the same weight as the device on the left consisting of 6 is provided on the right side,
The left device and the right counter device are fixed to a lever 41 that is pivotally supported to the head holding member 33 via a pin 40. Therefore, even if the electrophotographic device or the electronic image reproducing device falls over, the magnetic head 91 can be brought into reliable contact with the magnetic disk 9 by the action of the counterweight device 39.

FIG. 18 shows that while the magnetic head in the electrophotographic device and the electronic image reproducing device described above was of a movable type, the magnetic head shown in this embodiment is of a fixed type. It consists of a magnetic head device 91' in which a plurality of magnetic heads 91' ₁ to 91' ₂ are arranged in the radial direction of the disk 9. When the devices 6, 6' are loaded, the magnetic head device 9
Each of the magnetic heads 91' ₁ to 91'm of 1 enters the openings 7b and 7b' of the devices 6 and 6', and the magnetic heads 91' ₁ to 91'n are brought into contact with the magnetic disk 9. . 92 is the magnetic head 91' ₁ -
A switch device having a plurality of switches 92' ₁ to 92'n connected in pairs to 91'n,
The switches 92 ₁ to 92n of the switch device 92 are sequentially controlled by a known switch selection device.

That is, the switch 92 ₁ of the switch device 92
~92n receives a selection signal from a switch selection device, and if the input signal is a signal that turns on switch ₉₂₁ , magnetic head 91' is enabled, and the other switches ₉₂₂ to 92n are disabled. .
Then, when the input signal from the switch selection device is a signal that turns on the switch 92 ₂ , the magnetic head 91' ₂ becomes effective, and the other switches 92 ₁ , 9
2 ₃ to 92n are sequentially controlled to be in an invalid state, and when a signal to turn on switches 92 ₁ and 92 ₂ is input, switches 92 ₁ and 92 n are turned on.
2 ₂ becomes effective at the same time and other switches 92 ₃
~92n becomes invalid. That is, the switches 92 ₁ to 92m are controlled in various ways according to the switch selection signal and the output signal from the device, and each magnetic head of the magnetic head device 91' paired therewith is respectively enabled. Then, information is stored on the surface of the magnetic disk 9 that is in contact with the enabled magnetic head, or information stored on the magnetic disk surface is reproduced.

Therefore, such a multi-magnetic head device 91'
If this is used, the magnetic head can be moved every time the track on the magnetic disk 9 changes, as in the magnetic head device used in an electrophotographic device or an electronic image reproducing device shown in FIGS. 9 to 17. Since there is no need to move the magnetic head, a mechanism for moving the magnetic head is not required.

In the embodiment described above, the configuration of the present invention is exemplarily shown in FIG.

That is, as shown in FIG. 11, there is a flange pack, etc., which has a device storage chamber 76 having a magnetic disk 9 and a semi-transmission mirror 94 that guides the light beam from the subject to the image sensor 95 (virtual light receiving surface 95' of the image sensor 95). The optical system consisting of the optical system and the finder systems 69, 69' are arranged side by side, and the storage chamber is arranged at a position laterally displaced from the optical path of the optical system. Therefore, the overall shape of the camera can be made thinner, which has the effect of making it more compact.

Furthermore, in this embodiment, in the normal use position of the camera, the viewfinder system and the optical system are arranged side by side in the longitudinal direction of the storage chamber 76, which limits the thickness of the camera and makes it compact. It has the effect of making it possible to

Furthermore, in this embodiment, the storage chamber 76 can be held between the storage chambers 76 in the normal use position, that is, the plate-shaped recording casing stored in the storage chamber can be supported by the user's hands from both sides. Even if electronic cameras are miniaturized, users can easily hold them in their hands.
In addition, it is possible to ensure the holding, and it is possible to prevent failure in photographing due to camera shake during photographing. Furthermore, if the user holds the storage chamber with his/her hand and holds the camera toward the subject, it is possible to prevent the user's hand from accidentally covering the imaging optical system and taking an erroneous photograph. Therefore, it is possible to provide an electronic camera that is easy to use and can take reliable photographs.

<Effects of the Invention> As explained above, according to the present invention, the optical system for guiding the light flux from the subject to the image sensor and the finder system are arranged at a position laterally displaced from the optical path of the optical system. Attached to the storage chamber of the case, the camera is placed side by side in the longitudinal direction of the storage chamber in the normal use position of the camera, so that the shape of the camera can be made thinner.
Furthermore, since the height of the camera can be restricted, it can be made into a compact and easy-to-use shape.

Furthermore, in the present invention, the storage chamber, the viewfinder system, and the optical system are integrated into a body that is shaped to hold the storage chamber in the normal use position, so even if the camera is compact, it can be stabilized by being held in the storage chamber. The camera can be held in a horizontal position displaced from the optical path of the optical system when the user holds the camera, thereby preventing photographic failures due to camera shake, etc. By holding the lens between the two, it is possible to prevent the optical system from being covered with the hands even if the shape of the camera body is made smaller, and these two factors can ensure reliable photographing.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of a conventional sheet-shaped information storage medium handling device, and FIG. 1 shows a state in which a magnetic disk 1 is being rotated by a rotary drive shaft 5. FIG. 2 shows the state before the magnetic disk 1 is rotated by the rotary drive shaft 5. As shown in FIG. FIG. 3 is a plan view for explaining in detail the magnetic disk 1 housed in the handling device shown in FIGS. 1 and 2. FIG. Figures 4 to 6 are
FIG. 2 is a diagram for explaining the principle of FIGS. 1 and 2. FIG.
FIG. 7a is an external perspective view of an information storage medium handling device used in the device of the first embodiment of the present invention. FIG. 7b is an external perspective view of an information storage medium handling device used in the second embodiment of the present invention. FIG. 8a is a sectional view taken along the line Y--Y in FIG. 7a, and FIG. 8b is a sectional view taken along the line XX in FIG. 7b. 9 and 10 are perspective views of an electronic photographic device according to an embodiment of the present invention that uses the handling device shown in FIGS. 7 and 8, and FIG. 9 shows the state seen from the rear side. and FIG. 10 shows the state seen from the front side. FIG. 11 is a sectional view of the electrophotographic apparatus shown in FIGS. 9 and 10. 12th
This figure is a perspective view showing the inside of the storage chamber of the electrophotographic apparatus shown in FIG. 10 with the storage chamber lid opened. FIG. 13 is a front view of an electronic image reproduction device using the handling device shown in FIGS. 7a and 8, with the storage chamber lid removed. FIG. 14 is a sectional view showing a loading mechanism for receiving the handling device in an electrophotographic or electronic image reproduction device suitable for use with the handling device shown in FIG. 7b. FIG. 15 is a side view showing a magnetic head device that is a modification of the magnetic head device shown in FIG. 14. FIG. 16 is a perspective view showing a mechanism for engaging and disengaging power transmission between the pulley shown in FIG. 14 and the rotary drive shaft. Figure 17 is from Figure 9.
16 is a perspective view of a modification of the magnetic head device in the electrophotographic device or electronic image reproducing device shown in FIG. 15. FIG. FIG. 18 is a perspective view of a modified magnetic head device in the electrophotographic device or electronic image reproducing device shown in FIGS. 9 to 15, and a diagram for explaining the operation of this magnetic head device. It shows. 7... Housing, 8... Rotating shaft, 9... Magnetic disk, 10... Base body, 85... Rotating drive shaft, 91... Magnetic head, 77... Positioning pin, 36... Pen, 39
...Counterweight device.

Claims (1)

[Scope of Claims] 1. A viewfinder system for observing a subject, an optical system that guides a light beam from the subject to an image sensor, and a plate-shaped recording casing disposed laterally away from the optical path of the optical system. The electronic camera has a storage chamber for recording an image signal obtained from the image sensor on a recording medium in the plate-shaped recording case, the electronic camera having a storage chamber for storing the image signal in the recording body in the plate-shaped recording enclosure, The optical system and the finder system are disposed side by side in the longitudinal direction of the storage chamber, and the storage chamber is housed within a camera body shaped so that the storage chamber can be held by a user in the normal use position. An electronic camera characterized in that a chamber, the optical system, and the finder system are integrally constructed.