JPS6284675A - electronic camera - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic camera (electronic photographic device), and particularly to the structure of an electronic camera (electronic photographic device).

<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 recording medium surface can be approximately 13.97 meters per second, such as in video. To achieve maximum performance, the recording/reading head and the media surface must be in close contact and in contact without destroying the magnetic field-sensitive coating on the recording media (and without causing excessive wear). You must do so.

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 a video. That is, for example, if the storage medium is formed of a magnetic disk and this magnetic disk is rotating at 3.600 r, p, m, then if a still image is presented for 5 minutes, the same The track will be rubbed by the head approximately 18,000 times, and the close contact between the magnetic disk and the head will wear down the track on the magnetic head very quickly, and the information magnetically stored on the track will be lost. Destroyed.

Several methods have been proposed in the past to solve this problem between the head and the disk, one of which is to use a hard flat magnetic disk and a floating head for the magnetic disk, and The method involves softening a large surface head and burying it inside a flexible "floppy" magnetic disk. However, the former method requires a hard material as the substrate forming the magnetic disk, which is usually about 0.
．． It is made of 254 μm thick aluminum plated with a magnetically sensitive material such as nickel cobalt and coated with a 0.127 μm rhodium plating for wear protection. Magnetic disks formed in this way are very expensive, and when the disk rotates at full speed, the magnetic head floats on an air cushion to prevent excessive wear. It is necessary to configure The distance between the magnetic head and the magnetic disk is normally required to be between 0.889 and 1.27 μm, but the delicate balance of the force that keeps the magnetic head floating relative to the surface of the magnetic disk is Disturbances can be caused by fine dust particles or fingerprints, which can 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 or lean room environment, and usually sealed in an empty container. In order to avoid this collision between the magnetic head and the magnetic disk, head damage can be reduced by increasing the flying height of the magnetic head relative to the magnetic disk, but as the distance increases, performance deteriorates except in low-frequency digital applications. do. As mentioned above, using a hard magnetic disk,
This method of flying heads over magnetic disks 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 cost in magnetic disk drives that are problems with the former method, but it is still difficult to use the recording/reading magnetic field for floppy magnetic disks. 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 as the media moves past the magnetic head, air collects between the magnetic head and the drum. Forms a thin film. The thickness of this air film is a function of the radius of the surface of the tension head of the medium, the viscosity of the air, and the relative velocity of the disk head, approximately as follows.

h=o, e42 [:6 μV/T:l””h: Thickness of air film R: Radius of head surface V: Relative speed T
: Media 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 reproduction devices, it has become necessary to avoid excessive wear on the recording surface of the magnetic disk and the magnetic head. An apparatus including a flexible magnetic disk is proposed which enables continuous long-term recording and playback of broadband signals from the flexible magnetic disk without sacrificing performance;
This can be seen, for example, in Japanese Patent Laid-Open No. 109914/1983.

The newly proposed device according to the prior art is shown in FIGS. 11, 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 recorded on the upper main surface IA of a flexible disc-shaped information storage medium l such as a flexible magnetic recording 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. And the information storage medium 1 is the mother body 2
On the other hand, before being rotated, it is held on a horizontal plate as shown in Figure 5, and when rotated relative to the base body 2, it follows the curved surface of the surface 2a of the base body 2 as shown in Figure 6. Rotate. The information storage medium 1 consists of a central mounting part 1a and a storage part 1b in which information is stored, and a surface 1 of the storage part 1b.
b is coated with a magnetic flux sensitive material for information storage, and the central mounting portion 1a has a pair of openings 1a2 for coupling the recording medium 1 to a rotational drive device that provides a rotational speed to the information storage medium 1. 1a3 and an opening 1al for loading the storage medium 1 into the cartridge.

The storage and reproduction of information on the storage medium 1 is carried out when the magnetic disk 1 is rotated and the magnetic disk 1 follows the curved surface of the surface 2a of the base body 2.
This is achieved by placing the surface IA of the magnetic disk l and the magnetic head 3 in contact with each other at a selected position along the vertex of the magnetic disk l (T--T line in FIG. 4).

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. The magnetic head 3 is inserted into the outer container 4 and has an opening in the upper part of the outer container 4 of this cartridge to make contact with the surface of the magnetic disk l, and a cylindrical cylinder that protrudes inside the outer container 4. It has a shaped shaft 4a. This axis 4a is smaller than the aperture la1 of the magnetic head 3, and the aperture 1 of the magnetic head 3
It has extension parts 4al and 4a2 that are larger than al. The opening 1al of the magnetic disk 1 is inserted through the shaft 4a, and the magnetic disk 1 is rotatably held on the shaft 4a by extensions 4al and 4a2 of the shaft 4a. Further, the base body 2 is provided with 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 l held by the shaft 4a. In the apparatus for handling the magnetic disk l in this manner, the magnetic disk 1 is rotatably supported on the shaft 4a, and there is a space between the shaft 4a and the magnetic disk l when the magnetic disk 1 is at rest. There are no relative positioning means. When this handling device is loaded into an electronic photographic device or an electronic image reproducing device, the rotational drive shaft 5 provided in the electronic photographic device or electronic image reproducing device is connected to the opening 2 of the base body 2.
C, the bin members 5a and 5b provided at the tip of the rotary drive shaft 5 open the opening 1a2°la of the magnetic disk 1.
3.

Example> Examples of the invention will be described below.

First, before explaining the embodiment (exemplarily shown in FIGS. 9 to 12) of this book, the storage unit handling device used in the apparatus of the embodiment of this book will be explained.

FIG. 7(a) shows a first embodiment of the T-shaped information storage medium handling device for books, and FIG. 8(a) 7
The cross-section in the X--X line of FIG. 7(a) and the cross-section in the Y--Y line of FIG. 7(a) are shown in FIG.

An electronic camera that records video signals using a recording medium such as a magnetic disk installed in the handling device as described above.
An example of an electrophotographic apparatus using a magnetic tape as a recording medium is disclosed in Japanese Patent Application Laid-Open No. 49-52912.

The apparatus disclosed in this publication is characterized in that it is possible to reproduce images once recorded.

<Problems to be Solved by the Invention> However, in the above-mentioned apparatus, in order to reproduce an image once recorded, it was necessary to connect a monitor device.

Furthermore, no consideration has been given to the most preferable arrangement when such a monitor device is provided in an electronic camera.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic camera that does not require the operation of connecting a monitor device, can reproduce recorded images, and can easily observe such images.

Means for Solving the Problems> In order to achieve the above-mentioned objects, the present invention provides means for converting the luminous flux of a subject into a video signal, and a plane for reproducing the video signal converted by the means as a visible image. The camera has a flat rear surface, and the flat display means is disposed on the rear surface.

Function> The rear surface of the camera is configured in a flat shape, and since the display means is provided on the rear surface, the user can easily observe the display means.

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

6 is a general term for the entire handling device. 7 is the housing,
8 is a rotating shaft, 9 is a magnetic disk formed of a flexible member, and lO 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. In addition to the slot-shaped opening lower b and positioning holes 7C, 7C2 into which positioning bins provided in the storage chamber are inserted, information stored on the magnetic disk 9 is once erased. , when it is desired to prohibit new information from being stored on it again, the section 7d to be cut out and the engaging section 7e with which a finger or the like is engaged when taking out the device 6 loaded in the storage chamber are It is provided.

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. On the smooth surface 10a side of the base body 9, 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; There are four annular parts 10C surrounding the part fob, and a plurality of holes 10c, 10c2 opening to the outside of the base body 10 are provided on the bottom surface of the four parts 10C. 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 within the recessed portion 7a of the housing 7 and whose surface is greatly undulated, and the other end is provided with a magnetic disk 9. The base lO passes through a plurality of holes 9a2 and 9a3 provided near the center opening of the center attachment part 9a of the
A portion 8b having projecting pins 8b, 8b2 extending into the recess 10C is provided.

The sheet-like information storage medium handling device configured in this way can be used as an electrophotographic device or an electronic image reproducing device in the state shown in FIG. 7(a), FIG. 8(a), and (b). loaded inside. The rotating shaft 8 is used before being loaded into an electrophotographic device or an electronic image reproducing device, and even after being loaded into an electrophotographic device or an electronic image reproducing device.
When the magnetic disk 9 is not being rotated, the magnetic disk 9 extends horizontally as shown by the solid line in FIG. When the pin 8b of the rotating shaft 8 rotates under the rotational force of
, 8b2 and the magnetic disk 9 are 9a2. 9a3
Since the magnetic disk 9 is engaged through the magnetic disk 9, the magnetic disk 9 is rotated so that the disk 9 follows 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 7CI and 7C2 of the device 6 are engaged with the positioning bins protruding into the storage chamber, and the The surface provided on the rotary drive shaft on the side of the storage chamber is large enough to be positioned in a predetermined position within the storage chamber and adapted to engage with the toothing of the rotation shaft 8 of said device 6. The tooth portion having wavy sharp teeth and the tooth portion 8a of the rotating shaft 8 are engaged with each other.

Further, the magnetic head protruding into the storage chamber enters from inside the open lower b 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 a pin is provided on the rotary drive shaft to be connected to and detached from the sheet-like magnetic disk, the handling device always holds the sheet-like magnetic disk in advance. a rotating shaft 8 with 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 rotary drive shaft. Alternatively, power transmission between the drive device of the electronic image reproducing device and the magnetic disk 9 can be achieved, and the central mounting portion 9a of the magnetic disk 9 will not be damaged. Note that 11. provided on the outer surface of the housing 7. , 11□,
Reference numeral 113 denotes an information display section for displaying the type of magnetic material, etc., of the magnetic disk 9 housed in the device 6.

FIG. 7(b) shows an embodiment achieved by changing only the shape of the housing 7 of the device 6 shown in FIG. 7(a).

The device 6' of this embodiment has a lower opening b of the housing 7 with respect to the storage chamber of an electrophotographic device or an electronic image reproduction device.
The embodiment of the device 6' shown in FIG. In this embodiment, the surface 7A can be used as the entrance surface, and the surface 7B is the tapered surface 7B,
is formed.

FIGS. 9 to 12 show an implementation of 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. 7(a) as described above. 10 is a front perspective view of the camera, FIG. 9 is a rear 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 of this camera. Reference numeral 64' denotes a release switch disposed between the rotation shaft of the power switch and the shaft. 65
is a head access command device for specifying an arbitrary address of a desired part of an image storage provided on an image storage medium for head access (not shown), which is composed of, for example, a liquid crystal analog display; If you keep pressing button 66, the addresses of the recorded images will be displayed sequentially, starting from 1, for example, by means not shown, and if you release the button 66 when it overlaps with the address of the desired recorded image, the current address will be displayed. The head 91 accesses the image recording part of the address,
Image playback is performed and monitoring becomes possible.

67 is a recording switching button. During playback of the head access command device 65, that is, the recording switching button is in the PLB shown in the figure.
The functions when the camera is set to the position are as described above, but if the camera is in the image recording state,
That is, when the recording switching 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 number of sheets counter. At this time, even if button 66 is pressed, the display is not affected in any way. 6
8 is an LC matrix display device, and 73 is the display device 68.
This is a shutter that protects the vehicle from contamination and mechanical shock when it is not in use, and is shown in the open state in the figure. Here, display 6
8 is placed on the rear side of the camera as shown in the figure, making it an extremely convenient arrangement for observing the display. Reference numeral 69 denotes an optical finder eyepiece, which can be used when an LC matrix display is difficult to use for power saving purposes or for some other reason. The photoelectric conversion element 95 can be placed in the original optical path of a normal single-lens reflex camera as a finder structure, and in this case, the photoelectric conversion element 95 can be arranged as an auxiliary prism on one side of a normal pentagonal roof prism 90, as shown in FIG. 92 can be provided and arranged. 70 is 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;
Reference numeral 70b indicates a locking member for opening the lid, and 70b indicates a viewing window for viewing the storage chamber, which is made of transparent plastic, for example, and is useful for confirming the presence or absence of the device 6. Reference numeral 72 indicates a strobe device, and an electronic contact point 72 for transmitting and receiving signals with the camera.
A 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 located on the rear side of the camera, and a semi-transparent mirror 9 is located on the right side when viewed from the rear of the camera.
4. It is arranged so as to be juxtaposed with an optical system consisting of an eyepiece 69. Therefore, the thickness of the camera can be reduced, and operability is improved. The opening/closing lid 70 is provided with a device holding spring 74, and in the closed state, the spring 74 acts to restrict the device 6 to its normal position. In the illustrated state, the magnetic disk 9 in the device 6 is in contact with the magnetic head 91. A positioning pin 77 is fixed to a part of the main body, and is engaged with a positioning hole 7C provided in the device 6. 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 a rotary drive shaft rotatably supported by a bearing 82;
A large-diameter pulley 82 is fixedly installed at 3. 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 pulley 80. Belt 81. A rotary drive shaft 85 is rotated via a pulley 82, and the rotation of the rotary drive shaft 86 is further transmitted to the rotary shaft of the device 6, so that 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. 87°8
8.89 is an example of the head access mechanism 16, and the motor 8
A rack 81a that engages with a small and large force 88 fixed to the shaft of 7.
The configuration of a sliding member 89 having the following configuration is shown. Since the sliding member 89 is integrated with the head 91, the motor 87
It is clear that the head 91 moves over the storage medium 9 by forward and reverse rotation of the head 91, and random access operation of the head is performed by rotating the motor in response to a control signal from the head access circuit.

Incidentally, the motor 87 is preferably a pulse motor,
This allows for easier control. Reference numeral 90 denotes a penta roof prism constituting an optical finder. A small prism 92 is fixedly attached 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. is the opening/closing lid 7
0' indicates an open state. lot is the main body of the electronic image reproducing device. FIG. 13 shows an image information reproducing screen of a television cathode ray tube, 91' is a magnetic head, and the magnetic head 91' is sequentially and intermittently sent toward the rotating shaft 85 side. Reference numeral 77 denotes a positioning bin that protrudes from the storage chamber 96' in which the device 6 is stored, and the bin 77' is inserted into the positioning holes 7C, 7C2 of the device 6 when the device 6 is loaded into the storage chamber 96'. 96' to position the device 6 at a predetermined position within the storage chamber 96'.

In such an electronic image reproducing device which is an embodiment of the present invention, a device 6.6' as shown in FIGS. 7(a) and 7(b) is placed in a storage chamber 96'. When loaded from the side corresponding to the teeth 8a of the rotating shaft 8, the devices 6, 6
The teeth 8a of the rotation shaft 8 provided on the side 6 and 6' engage with the rotation drive shaft 85a provided on the image reproduction device 101 side, and the rotational force of the rotation drive shaft 85 is applied to the rotation shaft 8 of the device 6.6'. At the same time, the magnetic head 91 can transmit data to the device 6,
It enters into the device 6.6' through the open lower b of 6' and can come into contact with the magnetic disk 9.

FIG. 14 shows a mechanism suitable for an electronic photographic storage and reproducing system using the handling device 6' shown in FIG.
It goes without saying that B is suitable for use as an entrance surface and can be commonly applied to the electronic photographic device and the electronic image reproducing device;
A case where the present invention is applied to the electrophotographic apparatus shown in FIG. 12 will be explained as an example.

In FIG. 14, there is a handling device 6 in the device storage chamber 76.
The handling device 6' is loaded with the front surface 7b of the handler 6' being the entry side. 77'2 is the device 6' when loaded.
' with a positioning pin that is engaged with the positioning hole 7C,
The positioning pin 77'2 is always urged inward by the spring 31 into the storage chamber 76. 77'1 is device 6'
When the device 6' is loaded, the positioning pin 77'1 is engaged with the positioning hole 7C2, and the other end of the pin 77'1 is provided with a fork member 32.
A fork portion of 33. is provided on the head support member 33.
．． It is located between 33□.

89' is a long hole 89b that is engaged with the fixing pin 34.
This sliding member 8 is a sliding member that can be slid while being guided by
9' is moved via a gear 88 fixed to the output shaft of a stepping motor 87. The head support member 33
The pin 35 embedded in the sliding member 89' is
It has an elongated hole 33a that is guided by, and can be slid up and down. Reference numeral 83 denotes a rotational drive shaft, which has a toothed portion 85a that can engage with the toothed portion 8a of the rotating shaft 8 of the loaded device 6'. Furthermore, the rotary drive shaft 83 is slidable relative to the pulley 82', and an engagement groove 82 engages with the pin 831 of the rotary drive shaft 83 when the rotary drive shaft 83 moves downward. 'a. When the pin 831 and the engagement groove 82'a are engaged, the driving force from the motor is transmitted to the rotating drive shaft 83 via the belt 81'.

Reference numeral 36 denotes a leaf spring having one end fixed and the other end free.
'1 is always energized.

In the mechanism configured in this manner, when the device 6' is loaded into the storage chamber 76 and is not being operated, the head 91, the rotating shaft 83, and the positioning pin 77'1 protrude into the storage chamber 76 due to the biasing force of the leaf spring 36. ing. And the device 6' is the storage chamber 7.
6, the locating pin 77'1 is first pushed upward against the biasing force of the plate spring 36 by the tapered surface 7B of the locating pin 77'.
The head support member 33 moves upward via the fork member 32 in conjunction with the push-up operation of ', and the head 91 begins to exit from the storage chamber 76. Further, in response to the upward displacement of the leaf spring 36 by the withdrawal of the positioning pin 77', the rotary shaft 83 is also pushed up by the leaf spring 36, and the groove 82'a of the pulley 82' and the member 83 on the rotary drive shaft 83 are pushed up by the leaf spring 36. ．． The engagement with is released. When the device 6' is completely loaded and the positioning pins 77', 77'2 are completely inserted into the holes 7C, 7C2 of the device 6', the positioning pins 77'I, 77'2 are inserted into the device 6'. Since the magnetic head 91 and the rotational drive shaft 83 are moved downward, the head 91 is engaged with the magnetic disk 9, and the teeth 85 of the rotational drive shaft 83 are rotated inside the device 6'. The teeth 8a of the shaft 8 are engaged with each other, and a power transmission relationship is established between the rotary drive shaft 83 and the rotary shaft 8.

In this way, in this embodiment, as the device 6' is loaded, the magnetic head 91 and the teeth 85 of the rotary drive shaft 83 are loaded.
escapes out of the storage chamber 76 to facilitate the loading of the device 6', and only when the device 6' is fully loaded into the predetermined position will the magnetic head 91 and the teeth 85 be attached to the device 6'.
The rotary drive shaft 85
This allows insertion of the device 6' from a direction perpendicular to the axis of the device.

Note that 36 shown in FIGS. 15 and 17 is a pen that is attached selectively or from the beginning to the magnetic head 91, and the pen 91 is used to visually track the trajectory of the magnetic head 91 on the magnetic disk 9. The part written with this pen 91 is aligned with the scale 7f that is graduated along the extension direction of the opening lower b in the device 6', and the used track on the magnetic head 91 is recorded. It makes it possible to know.

FIG. 17 shows an improved head device used in the above-mentioned electrophotographic device or electronic image reproducing device. A counterweight device 39 that is held is provided on the right side, and the left device and the right counter device are connected to a lever 41 that is pivotally supported to the head holding member 33 via a pin 40. Fixed. 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 the magnetic head in the electrophotographic device and the electronic image reproducing device described above is a movable type, whereas the magnetic head shown in this embodiment is a fixed type.
A plurality of magnetic heads 9 are arranged in the radial direction of the magnetic disk 9.
A magnetic head device 91' in which 1'1 to 91'2 are arranged.
Consisting of When the device 6゜6' is loaded, each of the magnetic heads 91'1 to 91 of the magnetic head device 91 is loaded.
'm is the opening lower b, 7b' of the device 6, 6'
The magnetic heads 91' to 91'n are brought into contact with the magnetic disk 9. 92 is a switch device having a plurality of switches 92'1 to 92'n connected in pairs to the magnetic heads 91'1 to 91'n;
The switches 921 to 92n of the switch device 92 are sequentially controlled by a known switch selection device.

That is, the switches 92□ to 92n of the switch device 92
The selection signal from the switch selection device is input, and if the input signal is a signal that turns on the magnetic head 921, the magnetic head 9
1' is enabled, and the other switches 922-92n are disabled. Then, when the input signal from the switch selection device is a signal that turns on the switch 92°, the magnetic head 91'2 becomes effective, and the other switch 92
．． , 923 to 92n are sequentially controlled so as to be in an invalid state, and when a signal is input to turn on switches 92° and 92□, switches 921 and 92° are simultaneously activated and the other switches are 923 to 92n are in an invalid state. That is, the switches 921 to 92m are controlled in various ways according to the switch selection signal and the output signal from the device, and the magnetic head device 91' paired therewith is controlled.
Each magnetic head becomes effective. 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 surface of the magnetic disk is reproduced.

Therefore, if such a multi-magnetic head device 91' is used, like the magnetic head device used in the electrophotographic device or the electronic image reproducing device shown in FIGS. Since it is not necessary to move the magnetic head every time the track changes, a mechanism for moving the magnetic head is not required.

In the present embodiment described above, FIG. 9 exemplarily shows the characteristic configuration of the present invention.

That is, an LC matrix display 68 (corresponding to the planar display means of the present invention) is provided on the rear surface of the camera configured in a planar configuration. Therefore, when immediately reproducing a photographed (recorded) image, the user can observe the reproduced image while holding the camera in the same state as when the photograph was taken, which is extremely convenient.

Furthermore, the camera of this embodiment is provided with an optical viewfinder for observing the subject, and an LC matrix display 68.
However, if it is difficult to use the LC matrix display 68 for power saving purposes or for some other reason, such an optical finder can be used.

<Effects of the Invention> As explained above, according to the present invention, the rear surface of the camera is configured to be flat, and the display means is provided on the rear surface, so that the user can easily observe the display means. This effect is achieved.

[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 magnetic disk l 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 l housed in the handling device shown in FIGS. 1 and 2. FIG. FIGS. 4 to 6 are diagrams for explaining the principle of FIGS. 1 and 2. FIG. 7(a) 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. 7(b) is an external perspective view of an information storage medium handling device used in the second embodiment of the present invention. FIG. 8(a) is a cross-sectional view taken along the line Y--Y of FIG. 7(a), and FIG. 8(b) is a cross-sectional view taken along the line X--X of FIG. 7(b). 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. 1O shows the state seen from the front side. FIG. 11 is a sectional view of the electrophotographic apparatus shown in FIGS. 9 and 10. FIG. 12 is a perspective view showing the inside of the storage chamber of the electrophotographic apparatus shown in FIG. 1O with the storage chamber lid opened. FIG. 13 is a front view of an electronic image reproducing apparatus using the handling apparatus shown in FIGS. 7(a), 8(b), 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 device or an electronic image reproduction device suitable for use with the handling device shown in FIG. 7(b). 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. FIG. 17 is a perspective view of a modified magnetic head device in the electrophotographic device or the electronic image reproducing device shown in FIGS. 9 to 15. 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 I
O・・・・・・・・・・・・・・・River・Material body 85...
・・・・・・・・・・・・・・・Rotation drive shaft 91...
・・・・・・・・・・・・・・・・・・Magnetic head 77・
・・・・・・・・・・・・・・・・Positioning bin 36・
・・・・・・・・・・・・・・・Pen 39...
・・・・・・・・・・・・・・・Counterweight device. Patent applicant: Canon Co., Ltd. No. 5! What lO figure C man/da figure

Claims (1)

[Claims] An electronic camera having means for converting a luminous flux of a subject into a video signal, and a flat display means for reproducing the video signal converted by the means as a visible image, the camera having a rear surface configured in a flat shape. . An electronic camera characterized in that the planar display means is disposed on the rear surface.