JPS60242563A - Magnetic disk package - Google Patents

Abstract

PURPOSE:To inhibit securely data from being recorded on a magnetic disk by making the reading function of a recording device for a display counter for the number of recorded data ineffective. CONSTITUTION:Circular openings 36 and 38 are formed in an upper body 22 and a lower body 24 at corresponding positions and an annular member 40 is fitted in them. The positions of the opening holes 36 and 38 corresponding to the position of the display counter for the number of recorded data of a normal recordable magnetic disk package. Then, the lower body 24 has a claw 70 for recording inhibition at a specific position. This claw 70 is broken and removed to inhibit the recording to the magnetic disk 10 by the image recording device.

Description

[Detailed description of the invention] Kushiitate 1 The present invention relates to a magnetic disk package.

For example, small-diameter magnetic disks used in image recording devices such as electronic still cameras are usually handled in a molded package made of plastic or the like. This package is equipped with a counter that displays the number of recorded images to display up to which track on the magnetic disk □w, and a recording device such as a camera reads this counter display value and selects an unrecorded track. Recording is performed sequentially, and the counter is incremented to the recorded track number.

For example, if a supplier provides a consumer with a magnetic disk on which a set of still images is recorded, the contents of such recorded magnetic disk, that is, the images, may It is important to take measures to prevent the magnetic disk package from being intentionally destroyed. For example, a person may try to record a new image on an unrecorded track by loading a magnetic disk purchased from a video software supplier into an electronic camera, or a user may record a different image due to incorrect operation of a recordable playback device. there is a possibility.

Furthermore, if the counter display is correct, the recorded portion will not normally be re-recorded, but if the counter display is intentionally altered, it is possible to re-record or erase the recorded track. Therefore, as a video software supplier, in order to guarantee the quality of the recorded contents of the provided magnetic disks, magnetic disks on which a set of still images have been recorded may not be used indiscriminately, even if there are unrecorded portions. It is not desirable to be in a recordable state.

Therefore, in order to prevent re-recording on the recorded magnetic disk or destruction of recorded information, a write-inhibiting claw is provided on the package, and by breaking this, writing to the disk is prohibited. However, even after a nail is broken, it is possible to record again by applying tape to the corresponding part of the nail.

SUMMARY OF THE INVENTION The present invention overcomes the drawbacks of the prior art and provides a magnetic disk package capable of prohibiting recording on a magnetic disk in normally conceivable situations in devices capable of using magnetic disks. The purpose is to

&Mitate Ej According to the present invention, a magnetic disk package having a housing means for rotatably housing a magnetic disk therein is used to display a counter for displaying the number of recorded images in a recording device in which the package is loaded and records an image on the magnetic disk. It has a disabling means for disabling the reading function of the device.

Next, embodiments of the magnetic disk package according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, an embodiment of a magnetic disk package according to the present invention has a package body 22 for rotatably housing a thin, small diameter magnetic disk 10 therein, and a lower body 24, and has a basic structure. These components constitute a package 20.

The upper body 22 and lower body 24 are formed, for example, by plastic molding and have complementary shapes that fit together to form the package 20.

Circular openings 26 and 28 are provided at corresponding positions approximately in the center of the body 22 and the lower body 24, respectively, and are configured so that the /S block or core 12 at the center of the magnetic disk 10 can be exposed through them. There is. When the package 20 is attached to an electronic camera, an image recording device such as a video software supplier's recorder, or a user's video playback device, the drive shafts of those devices chunk into the core 10, and the magnetic disk 10 can be rotated within package 20.

The package 20 is provided with a shutter 30 that is movable in a direction parallel to one side of the package 20 as shown by an arrow 28, and this shutter 30 is provided in a shallow recess 32 of the upper body 22 and the lower body 24.
and 34, respectively. When the shutter 30 is moved to a position opposite to that shown in the figure, the openings of the upper body 22 and the lower body 24 are exposed, and the regulating plate and the magnetic head of the apparatus can be brought into contact with the magnetic disk IO, respectively.

As can be clearly seen from FIG. 2, the lower baggage body 24 includes:
A claw 70 for inhibiting recording is formed at a predetermined position. This claw 70 has the function of prohibiting the image recording device from recording on the magnetic disk 10 by breaking and removing it.

In this embodiment, circular openings 36 and 38 are opened at corresponding positions in the upper body 22 and the lower body 24, respectively, and the annular member 40 is fitted into these openings. The positions of the openings 38 and 38 correspond to the positions of the recorded number display counter of a typical recordable magnetic disk package.

As can be clearly seen from FIG. 3, the annular member 40 has a circular opening 42 at its axial center, and a portion of its upper end surface 44 and lower end surface 4B protrude slightly in the axial direction in an annular shape. They are configured to fit into and be supported by openings 36 and 38 in package body 22 and lower body 24, respectively. This fit may be loose, allowing member 40 to rotate, or tight, such that member 40 cannot rotate. It is advantageous if the member 40 is formed in a conspicuous color, such as red, because it can clearly indicate that this package 20 is prohibited from recording on the magnetic disk IO, as will be explained later. It is.

This embodiment has a simple structure because the number of components of the recorded number display counter, including the ratchet mechanism and the lock mechanism, is about three fewer than that of a normal magnetic disk package.

In addition, since there is no counter to display the number of recorded images, it is not clear whether there are unrecorded tracks that do not meet the recording capacity, and this prevents users from attempting to record their own images on unrecorded tracks. This is advantageous in terms of maintaining the quality of recorded images.

In another embodiment shown in FIG. 4, corresponding positions of the package upper body 22 and lower package body 24 each have circular openings 5.
0 and 52 are provided. Double openings 50 and 52
When the upper body 22 and the lower body 24 are fitted together,
An opening corresponding to the opening 42 in the embodiment of FIG. 3 is formed.

The diameters of the opening 42, 50 and 52 are determined by the diameter of the tip 102 of a spindle 100 (FIG. 7) that is provided in the image recording apparatus and drives and advances a counter that displays the number of recorded bones.
It is formed substantially thicker than the diameter of.

Specifically, as shown in FIG.
It consists of a cylindrical portion +04 with a diameter of /J1 and a key 106. In a general recording device, when a magnetic disk package is loaded into the device, the driving spindle 100 of the counter for displaying the number of recorded data rotates, the key +06 engages with the keyway of the counter, and the tip 102 of the counter rotates. It is inserted securely into the corresponding opening. Compared to the embodiment shown in FIG. 3, the embodiment shown in FIG. 4 does not require the annular member 40 and can be integrally molded with the package upper body 22 and lower package body 24, so that the structure is simpler.

In the embodiment of FIGS. 1-4, opening 42. and diameters 50 and 52 of the tip 10 of the spindle 100.
The diameter is substantially larger than the diameter including the second key 10G. Therefore, when the baggage 20 is loaded into a general image recording device, the drive spindle 100 rotates and even if its tip 02 is fully inserted into these openings 42 or 50 and 52, the key 106 is There is no engagement of the groove, so the spindle 100 continues to rotate with only a light load.

In another embodiment, shown in FIG. 5, the annular member 40 is provided with a relatively small circular opening 60. In another embodiment shown in FIG. 6, circular openings 62'8 and 64 are provided at corresponding locations in the package upper body 22 and lower package body 24, respectively.
is provided. The diameters of these openings 60, 62 and θ4 are substantially smaller than the diameter of the tip 102 of the spindle 100 including the key 10[i, and
In this embodiment, the diameter is larger than the diameter of the cylindrical portion 104 of the tip portion 102. Therefore, when the baggage 20 is loaded into a general image recording device, the drive spindle 100 rotates and its tip 102 is inserted into these openings 60.
, or inserted somewhat into 62 and 64, the key 10
Due to the presence of B, the tip 102 is not fully inserted into these openings and therefore the spindle 10
0 continues to rotate with a light load.

In the embodiment shown in FIG. 7, a key groove 8B is formed at the periphery of the cylindrical opening 80 in the embodiment shown in FIG. and is supported by the lower body 24. This structure is almost the same as a counter for displaying the number of recorded images in a normal magnetic disk package, but differs from this in that the member 40 is supported so as to be freely rotatable with a light rotational torque without clicks. As shown in the figure, when the baggage 20 is loaded into a general image recording device, the drive spindle 100 rotates, the tip end 102 of the annular member 40 is inserted into the opening 60, and the key 106 is inserted into the key groove. 68. therefore,
Even if the key 10ft is fitted into the keyway 6θ, the spindle 10
0 continues to rotate with a very light load.

In another embodiment shown in FIG. 8, no opening is provided at a position 80 of the package 20 corresponding to the recorded number display counter. In another embodiment shown in FIG. 9, a portion of the package 20 corresponding to the recorded number display counter is partially cut out. This notch 82 is similar to the embodiment of FIG.
It has a shape and size that is substantially larger than the diameter of the tip 102 shown in the figure, and allows the spindle 100 to rotate freely.

The flow chart in FIGS. 10 and 11 describes the operation of the recording device when the magnetic disk package 20 in these embodiments is loaded into a general recording device such as an electronic still camera or an image recorder with a playback function. The functions of these packages 20 will be explained with reference to FIG.

The video software supplier can record images on the magnetic disk 10 housed in the package 20 using a dedicated image recording device and without using the recorded number display counter. Of course, it is preferable to remove the recording inhibit claw 70 after recording has been completed.

In all commonly available image recording apparatuses, when a normal magnetic disk package is loaded, the operation flow is shown in FIG. 10 or 11. These flows are likely to be common ones based on the design concept of image recording devices available to general consumers.

When a magnetic disk package is loaded into the apparatus, the presence or absence of the write inhibit claw 70 is first detected. If the claw 70 is present, or equivalent, then the flow of Figure 1θ begins.

The counter spindle 100 is first returned to the original (q position) (home position) (200).The original position may be the #1 track of the magnetic disk, or may be located further ahead of the #1 track. .

When a normal magnetic disk package is loaded, by rotating the spindle 100 (202), the key 106 engages with the keyway of the recorded number display counter, and its rotational load increases (204). The threshold value for detecting this load increase is preferably set to a value that does not exceed the torque (for example, minimum 6 g) required for the click step of the recorded number display counter. This reads the rotating position of the counter (
206), and if it is a full position (for example 50), no further recording is performed (208). If it is not full, it is possible to record on the unrecorded track (212). When the package 20 according to the present invention containing the magnetic disk 10 is loaded into such a recording device, as shown in FIGS. 1 to 9. The following operation is performed depending on the embodiment, and even if tape or the like is attached to the portions of the package 20 corresponding to the nails, recording on them is reliably prohibited.

First, in the embodiments shown in FIGS. 1 to 7 and 9, even if the spindle lOO rotates (202), the load does not increase significantly, so the spindle 100 rotates more than one revolution. Becomes (210). In other words, this invalidates the reading function of the already recorded number display counter in the recording device. The recording device can thereby detect that the magnetic disk housed in the bankage 20 is write-inhibited, and can take measures to prohibit writing (2+2).

Further, in the embodiment shown in FIG. 8, the spindle 100
A part of the lower package body 24 comes into contact with the tip 102 of the
Either the package 20 cannot be completely loaded into the recording device and a recording operation cannot be performed, or even if the package 20 is loaded, the spindle 100 rotates once as described above. It is possible to detect that recording is prohibited and take action to prohibit recording (2j2).

FIG. 11 is effective for the magnetic disk packages shown in FIGS. 5, 6, and 8, and the number of recorded data is determined by the position where the counter spindle 100 of the magnetic recording device engages with the recorded number display counter. The flow of the method for detecting is shown below. Once the magnetic disk package is loaded, the counter spindle 100 is returned to its original position (300) as in the previous example. In this state, it is determined whether the spindle 100 has engaged with the counter, that is, whether the spindle 100 has moved to a position where the key of the spindle 100 enters the keyway of the counter (302). If this key is not entered, the spindle 100 is advanced by one unit (304);
Further, it is determined whether or not the position of the spindle 100 is at a value that is greater than the full value of the force counter (for example, 50) by l (30B), and if this value is not reached, steps 302 to 306 are performed. The process is repeated.

Thereafter, when the key of the spindle 100 enters the keyway of the counter (302), it becomes possible to record (312) unless the position is in the full position (310).

On the other hand, when the magnetic disk packages shown in FIGS. 5, 6, and 8 are used, the key on the spindle remains on the counter until the spindle reaches a value that is 1 more than the full value of the counter in step 306. It won't fit into the keyway. Therefore, it is possible to detect that the magnetic disk housed in the package 20 is write-prohibited, and to take measures to prohibit recording.

As described above, the magnetic disk package of the present invention can reliably prohibit recording on a magnetic disk in situations that can normally be assumed in a device capable of using a magnetic disk.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the magnetic disk package according to the present invention, FIG. 2 is a perspective view showing the bottom surface of the embodiment of FIG. 1, and FIG. 3 shows a part of the embodiment of FIG. 1. The enlarged partially enlarged perspective views, FIGS.
FIGS. 10 and 11, which are partially enlarged perspective views similar to those shown in the figure, are flowcharts showing an example of the operation of the image recording apparatus when the magnetic disk package according to the present invention is loaded into the image recording apparatus. -1', 2 20, Package 22, 1 package 24, Package lower body 40, Annular member 42.80. , Circular opening gourd 1 diagram? 0 Hou 2 figure 0 Qin 3 figure 6 Son A 4 figure n Earth figure 5 qΦ Orozu tail 7 concave 6 δ #8 figure 9 figure 0 This IO figure

Claims (1)

[Scope of Claims] (1) A magnetic disk package having a housing means for rotatably housing a magnetic disk therein, wherein the package is loaded with the pancage and records information in a recording device that records information on the magnetic disk. A magnetic disk package characterized by having a disabling means for disabling a reading function of a number display counter. 2. In the package according to claim 1,
A magnetic disk package characterized in that the nullifying means applies at most a load that is substantially lower than the torque required to advance the counter to a drive shaft that advances the counter in the recording device. 3. In the package according to claim 1,
The magnetic disk drive is characterized in that the nullifying means comprises an annular member having a circular opening having a diameter substantially larger than that of the drive shaft, and the annular member is disposed on a side corresponding to the counter. Tsukage. 4. In the hinge according to claim 1, the disabling means has a circular opening substantially on the side of the drive shaft and having a larger diameter formed at a position corresponding to the counter of the accommodating means. A magnetic disk package characterized by: 5. In the coupling cage according to claim 1, the disabling means includes an annular member having an opening large enough to prevent the drive shaft from being secured, and the annular member is located at a position corresponding to the counter. A magnetic disk connection cage characterized by being arranged in. 6. Claim 2: In the invention, the disabling means has an opening having a size in which the drive shaft cannot engage, and the opening corresponds to the counter number of the accommodating means. 7. The package according to claim 1, characterized in that the magnetic disk package is formed at
The overriding means comprises an annular member having an opening that can be fully engaged by the drive shaft, the annular member being disposed at a position corresponding to the counter and applying only the substantially low load to the drive shaft at most. A magnetic disk package, characterized in that the magnetic disk package is rotatably supported by the storage means in an unloaded state. 8. In the package according to claim 1,
A magnetic disk package, wherein the disabling means prevents a drive shaft for advancing the counter in the recording device from moving to a position where it engages with the counter.