JPS6231280A - Electronic still camera - Google Patents

Abstract

PURPOSE:To prevent the generation of drop out due to a defective touching of the surface of a sheet and a magnetic head by moving a movably disposed regulating member to a position for pressing the surface of the sheet from a position separated from the surface of the sheet by interlocking with the operation of a lens cover in opposition to the magnetic head reciprocating a magnetic disk sheet in the radial direction. CONSTITUTION:A plate 4 is moved toward a head, thereby a regulating member 5 is pressed so as to effectively contact a magnetic disk sheet 30 with a magnetic head 20 and have a state capable of photographing. The plate 4, during moving, moves making a vis 8 part of a lower part a fulcrum, while the regulating member 5 presses the magnetic disk sheet 30, the plate 4 is pressed by a positioning post and supported through a coil spring 19 without being regulated by a fitting pin 13. In such a manner, the plate 4 interlocks with a cover 2, and when the cover 2 is closed, the regulating member does not press the magnetic disk sheet 30, thereby the deterioration of a correspondence or the like of the magnetic head and the surface of the sheet due to a deformation of the sheet can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electronic still camera that magnetically records images on a magnetic disk sheet, which is a disc-shaped and extremely thin magnetic recording medium.

(Prior art) In recent years, a so-called "electronic still camera" has been proposed and put into practical use, which is capable of magnetically recording images on a magnetic recording medium, which is different from the method of forming images on a recording medium such as a photosensitive material. is lacking in This electronic still camera uses a compact magnetic disk cartridge in which an ultra-thin magnetic disk sheet is rotatably built into a relatively hard case. Since the disk rotates at a high speed of rpm and the disk sheet itself is relatively flexible, a regulating body is usually provided to improve the contact between the disk sheet surface and the magnetic head.

The basic structure in which the magnetic head and the surface of the disk sheet come into contact (strictly speaking, they are in a non-contact state due to the high speed rotation when the sheet rotates) is as shown in FIG. At a location corresponding to the head 20, a regulating body 5 is provided that faces the head 20 and presses the sheet surface on the opposite side. Therefore, when the magnetic disk cartridge is loaded into the electronic still camera, regardless of whether or not a photograph is being taken (sheet rotation state), the magnetic disk sheet 3 as shown in FIG.
0 is a magnetic recording surface (
(lower part in the figure) is deformed into a concave shape.

(Problem to be Solved by the Invention) The deformation of the magnetic disk sheet 30 as described above is temporary (instantaneous) when the sheet is rotated.
Although this modification has the effect of improving the correspondence between the magnetic head 20 and the sheet surface, the magnetic disk sheet 3
If the non-rotating state of 0 occurs for a long time or for a long period of time, the sheet 30 may take several days to recover from the concave deformation, and in severe cases may not return to its flat state. there were.

When such deformation occurs, dropout is likely to occur due to write or read loss of information due to poor contact between the sheet surface and the magnetic head at the deformed portion.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an electronic still camera configured to prevent deformation of a magnetic disk sheet by a regulating body.

(Means for Solving the Problems) The above objects of the present invention are to push the magnetic disk sheet toward the head side and to separate it from the disk sheet, facing the magnetic head that reciprocates in the radial direction of the magnetic disk sheet. The regulating body is arranged to be movable between positions, and is moved from a position away from the sheet surface to a position where it presses the sheet surface in conjunction with the operation of a photographing preparation operation means provided on the outer surface of the camera. This is achieved by an electronic still camera characterized by the following configuration.

(Embodiment) Hereinafter, a preferred embodiment of the present invention illustrated in the drawings will be described in detail.

The electronic still camera (hereinafter simply referred to as "camera") to which the present invention is applied, shown in FIG. A packet holder 3, which is a part into which a magnetic disk cartridge is loaded, is provided on the back side of the camera. This packet holder 3 has a hinge section at its lower end and can be opened and closed (first
Arrow B) in the figure is shown.

A substantially triangular plate 4 and a second interlocking plate 11 as shown in FIG. 2 are attached to the packet holder 3. As shown in FIG. A regulator 5, an index sensor 6, etc. are attached to the plate 4, and its upper end piece 9 is bent at a substantially right angle, and a pair of inclined holes 7 are formed in the upper end piece 9. In addition, the plate 4 is attached to the packet holder 3 using screws 8, etc.; A coil spring 9 is arranged, and the plate 4 is movable in the front and rear directions relative to the packet holder 3. The second interlocking plate 11 has an engaging pin 12 planted on its upper surface and a pair of fitting pins 13 implanted on its lower surface. A long hole 10 formed by
A is loosely fitted into the inclined hole 7 through the upper end 10, and the upper end 10 is inserted into the elongated hole 10I! It is attached so that it can slide along the L. The second interlocking plate 11 is biased in the direction of arrow A' in the figure by a biasing means (not shown).

The first interlocking plate is an engagement pin 1 provided on the second interlocking plate 11.
It is provided in the upper part of the camera body 1 so that a notch 16 can be engaged with the lens cover 2, and is connected to the lens cover 2 so that the camera can slide in the left-right direction. Note that the connection between the first interlocking plate 14 and the lens cover 2 is achieved by, for example, a transparent hole 15 of the first interlocking plate 14 and a protrusion 1 provided inside the lens cover 2.
This can be done by fitting with 7.

The operation of the camera configured as described above will be described in detail.

When loading a magnetic disk cartridge into the camera,
First, open the packet holder 3, insert the magnetic disk cartridge into the packet (cartridge insertion part) located closer to the camera body than the plate 4, and then insert the magnetic disk cartridge into the holder 3.
Close. At this time, the engagement pin 12 is connected to the g41 interlocking plate 14.
(the lens cover 2 covers the lens). In this state, as shown in FIG. 3, the magnetic disk sheet 30 in the cartridge is in slight contact with the magnetic head #20 provided in the camera, but the regulating body 5
The disc sheet 30 is not in a position where it is pressed, and the disc sheet 30 is not deformed. That is, since the second interlocking plate 11 is positioned in the A' direction (left side in FIG. 2) by a biasing means (not shown), the fitting pin 13 is fitted into the narrow end portion 7b of the inclined hole 7. shi, plate 4 is plate lower part 4b
The position is regulated at a location away from the magnetic disk sheet 30 using the fulcrum as the fulcrum.

Thereafter, when photographing, the lens cover 2 is slid in the direction of arrow A to the lens open position, and power is supplied to the camera body to make it ready for photographing. The lens cover 2 is designed so that the lens remains in the open position even if a certain amount of force (in the A' direction) is applied. At this time, the first interlocking plate 14 slides in the direction of arrow A together with the lens cover 2.

Therefore, the engagement pin 12 is inserted into the notch 16 of the first interlocking plate 14.
The first interlocking plate 11 engaged with slides in the same direction (in direction), and the fitting pin 13 moves to the wide portion 7a of the inclined hole 7. Then, the fitting pin 13 moves to the wide part 7a where the hole diameter is wider in the packet holder direction than the terminal end part 7b. Therefore, since the plate 4 is biased in the direction of the magnetic head P (direction of arrow C) by the coil spring 19, the lower part 4b of the plate (the part where the screw 8 is attached)
Move toward the head using as a fulcrum.

As the plate 4 moves in the head direction in this way, the regulating body 5 held by the plate 4 presses the magnetic disk sheet 30 so that it is securely in contact with the magnetic head 20, as shown in FIG. It is now ready to take pictures.

When not photographing, when the lens cover 2 is returned to the direction A' (position covering the lens), the engagement between the engagement pin 12 and the notch 16 is released, and the second interlocking plate 11 is moved by the force of the urging means. Return to direction A'. As a result, the fitting pin 13 enters into the terminal end 7b, and the plate 4 resists the urging force of the upper coil spring 19 and moves away from the magnetic head 20 using the lower end 4b of the plate as a fulcrum (opposite direction C). ), and the magnetic disk sheet 30 and the regulating body 5 return to their original states as shown in FIG.

As described above, when the plate 4 moves, it moves using the lower screw 8 as a fulcrum, but when the regulating body 5 is pressing the magnetic disk sheet 30, the regulating body 5 is moved against the head surface. It is configured to abut on a positioning post (not shown) so as to press parallel to the positioning post. That is, when the regulating body 5 is pressing the magnetic disk sheet 30, the plate 4 is not regulated by the fitting pin 13 but is moved by the positioning boss by the coil spring 9).
K is pushed and supported.

By configuring the plate 4 that holds the regulating body 5 in this manner to work in conjunction with the lens cover 2 so that the regulating body does not press the magnetic disk sheet 30 when the cover 2 is closed, the regulating body can be held at any time other than when the seat is rotating. It is possible to reduce the suppression of 5.

In the embodiment described above, the second interlocking plate 11 was biased in a direction to release the regulating body 5 from the seat surface, but the present invention is not limited to this embodiment. The portion 16 may have a shape as shown in FIG.

In this case, the notch 16 is configured such that both side edges thereof are inclined to widen toward the back side of the camera. That is, even if the position of the first interlocking plate 14 and the position of the second interlocking plate 11 are mutually arbitrary, when the packet holder 3 is closed, the engagement pin 12 is located on either side of the notch 16. along one side, engages in a predetermined position of the notch 16, and
The second interlocking plate 11 moves in either direction (A and A' directions) by opening and closing the lens cover 2. Therefore, the regulating body 5 can be moved S by operating the lens cover 2.

Further, although the embodiment shown in FIG. 2 is configured to have two inclined holes 7, the present invention is not limited to this, and it goes without saying that there may be only one, and the shape thereof can be changed in various ways.

Furthermore, in the present invention, the regulating body is moved in response to the operation of the photographing preparation operation means provided on the outer surface of the camera (in the above example, the lens cover is moved to the lens open position), and this photographing preparation operation The means is not limited to the above example, but may be an operation of a winding knob or the like normally provided in a conventional camera.

Although the present invention has been described above with reference to an electronic still camera, it goes without saying that the present invention is not limited thereto, and can be widely applied to, for example, devices that perform recording using a magnetic disk cartridge as a medium.

(Effects of the Invention) As described above in detail, according to the present invention, the regulating body that acts to suppress the magnetic disk sheet to come into contact with the magnetic head is positioned at a position where it presses the sheet surface or at a position away from the sheet surface. Since the regulating body can be moved appropriately by operating the photographing preparation operation means, it is possible to avoid a suppressed state in which the regulating body causes plastic deformation to the magnetic disk sheet, for example, except when writing or reading information. It is possible to prevent a decrease in surface compatibility.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a camera showing one embodiment of the present invention, FIG. 2 is an exploded perspective view of main parts of the camera shown in FIG. 1, and FIGS. 3 and 4 are regulations showing the regulations shown in FIG. 2. FIG. 5 is a schematic cross-sectional view of a conventional regulating body, and FIG. 6 is a perspective view of a main part of another embodiment of the present invention. 1... Camera body, 2... Lens cover, 3... Packet holder, 4... Plate, 5... Regulator,
6... Index sensor, 7... Inclined hole, 7a.
...Wide part, 7b...Terminal part, 8...Screw, 9...
・Top end piece, 10...Top end part, 10a...Long hole, 11
... Second interlocking plate, 12... Engaging pin, 13... Fitting pin, 14... First interlocking plate, 15... Transparent hole, 1
6... Notch, 17... Protrusion, 19... Coil spring, 20... Magnetic head, 30... Magnetic disk sheet (and 2 others) - Figure 1

Claims (1)

[Claims] 1) Opposed to a magnetic head that reciprocates in the radial direction of a magnetic disk sheet, it is provided so as to be movable between a position where the disk sheet is pressed toward the head and a position where it is separated from the disk sheet. An electronic still camera characterized in that the regulating body moves to a position where it presses the disk surface by operating a photographing preparation operation means provided on the outer surface of the camera. 2) A lens cover that is integrated with the camera body so that the photographing preparation operation means can take at least two positions, a lens open position and a lens closed position, and is regulated in conjunction with the drive of the cover to the lens open position. 2. The electronic still camera according to claim 1, wherein the electronic still camera is arranged so that its body is separated from the disc sheet.