JP2004348909A - Card type drive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the deterioration of recording/reproducing characteristics caused by surface wobbling in a swing arm type disk drive device which uses a supercompact magnetic disk cartridge equipped with a flexible medium. <P>SOLUTION: A card type drive device 10 is capable of housing a disk cartridge 1 which has an opening part 6 extending over the swinging area of a swing arm 23. A recording/reproducing head 22 moves along the vicinity of the edge part 6a of the opening part 6 on the rotational upstream side of an information recording medium. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drive device of a magnetic recording / reproducing apparatus loaded with a magnetic cartridge, and more particularly to a card type drive device.
[0002]
[Prior art]
Conventionally, in a mobile device such as a digital camera, an ultra-small magnetic disk cartridge called “click!” Or “Pocket Zip” is used as a recording medium. This disk cartridge has a diameter of about 1.8 having a storage capacity of 40 MB fixed to the center core in a housing having upper and lower shells made of flat metal thin plates having a width of 50 mm, a depth of 55 mm, and a thickness of 1.95 mm. An information recording medium 5 having flexibility such as an inch (46.5 mm) magnetic disk is rotatably accommodated.
[0003]
As a drive device for recording and reproducing information on the disk cartridge described above, a card-type drive device that can be loaded into a card slot conforming to the PCMCIA type 2 standard of a personal computer is used (see, for example, Patent Document 1). FIG. 5 is a schematic diagram showing a state in which the disk cartridge 1 is loaded in the conventional card type drive device 10. A card type drive device 10 shown in FIG. 5 includes a card type drive main body 20 for recording / reproducing information on / from an information recording medium 5 accommodated in a disc cartridge 1, and a flat cover member 30 attached to the drive main body 20. have. An accommodating portion 25 for accommodating the disk cartridge 1 is provided between the drive main body 20 and the cover member 30, and the disk cartridge 1 is inserted from an insertion port 10 a provided in front of the drive main body 20. In the state of being accommodated in the accommodating portion 25, the drive main body 20 records and reproduces information.
[0004]
Here, the drive main body 20 holds the center core and rotates the information recording medium 5 in the direction of arrow R1 (not shown), and accesses the information recording medium 5 rotated by the rotation driving unit. A swingable swing arm 23 having a recording / reproducing head 22 for recording / reproducing information at its tip is provided. The swing arm 23 swings on the opening 6 so that the recording / reproducing head 22 moves on the information recording medium 5 to record / reproduce information.
[0005]
Specifically, the opening 6 is formed in a substantially V shape, and a first edge portion 16a formed in the radial direction of the information recording medium 5 along the outside of the movement locus of the tip of the swing arm 23; And a second edge portion 16 b formed in the radial direction of the information recording medium 5 along the extending direction of the swing arm 23. The recording / reproducing head 22 fixed to the tip of the swing arm 23 moves in the radial direction in the vicinity of the first edge portion 16a, and accesses the information recording medium 5 to record / reproduce information.
[0006]
[Patent Document 1]
International Publication No. WO99 / 66508 Pamphlet [0007]
[Problems to be solved by the invention]
Here, since the information recording medium 5 is flexible, the information recording medium 5 exposed from the opening 6 is subject to surface wobbling. This surface runout is greater immediately before being housed in the housing from the opening 6 than immediately after being exposed from the opening 6. That is, the information recording medium 5 in the vicinity of the first edge portion 16a has a larger surface runout than the information recording medium 5 in the vicinity of the second edge portion 16b.
[0008]
However, since the recording / reproducing head 22 accesses the information recording medium 5 in the vicinity of the first edge portion 16a, there is a problem in that the recording / reproducing characteristics may be deteriorated due to surface wobbling.
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to provide a card type drive device that can reduce deterioration in recording / reproducing characteristics due to surface wobbling.
[0010]
[Means for Solving the Problems]
A card type drive device according to the present invention includes a rotation drive unit that rotates a disk-shaped information recording medium accommodated in a housing of a disk cartridge, and an opening formed in the housing in the information recording medium that is rotated by the rotation drive unit. A card type drive device having a swingable swing arm having a recording / reproducing head for accessing and recording / reproducing information at a tip, the housing moving the recording / reproducing head in the radial direction of the information recording medium In addition, in a card type drive device in which a disc cartridge having an opening that is opened over a region where the swing arm swings is loaded, the recording / reproducing head moves along the vicinity of the edge of the opening on the upstream side of the information recording medium. It is what is characterized by.
[0011]
【The invention's effect】
According to the card type drive device of the present invention, the recording / reproducing head held at the tip of the swing arm moves along the vicinity of the edge on the upstream side of the opening, and the edge on the upstream side of the opening. Since the information recording medium has little surface shake in the vicinity of the portion, information can be recorded / reproduced in an area with less surface shake, and deterioration of data recording / reproduction accuracy due to surface shake can be reduced.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a card type drive device of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing a preferred embodiment of the card type drive device of the present invention. In FIG. 1, a card-type drive device 10 is used by being inserted into a card slot of a personal computer or the like, and has dimensions of width 53 mm, depth 85 mm, and thickness 5 mm conforming to the PCMCIA type 2 standard, for example. . An insertion slot 10a for inserting the disk cartridge 1 is provided in front of the card type drive device 10, and a connector 10b for connecting to a personal computer is provided in the rear.
[0013]
FIG. 2 is a plan view showing an example of a disk cartridge in which information is recorded and reproduced by the card type drive device 10 of the present invention. 2A, 2B, and 2C show a plan view, a side view, and a bottom view of the rotary shutter 7 in a closed state.
[0014]
This disk cartridge 1 is a flat plate having a width of 50 mm, a depth of 55 mm, and a thickness of 1.95 mm, which is constituted by a frame 2 called a normal stabilizer made of resin including a pushing portion 2a and upper and lower shells 3 and 4 made of a thin metal plate. A disc-shaped information recording medium 5 having a storage capacity of 40 MB and having a diameter of about 1.8 inches (46.5 mm) is rotatably accommodated in a simple housing. The information recording medium 5 includes a flexible disk-shaped information recording medium 5 and a center core C provided at the center of the information recording medium 5. The information recording medium 5 is made of, for example, a plastic film coated with a magnetic material and has flexibility.
[0015]
The housing includes a V-shaped opening 6 for allowing the recording / reproducing head 22 of the card type drive device 1 to access the surface of the information recording medium 5 and a rotary shutter 7 for opening and closing the opening 6. I have. When the card type drive device 1 performs recording / reproduction of information with respect to the information recording medium 5, the rotary shutter 7 is opened and the magnetic head is inserted from the opening 6. On the other hand, in order to prevent dust and the like from entering through the opening 6 when the card-type drive device 1 is taken out, the rotary shutter 7 is closed to close the opening 6.
[0016]
FIG. 3 is an exploded perspective view of the card type drive device 10 of FIG. In FIG. 2, a card type drive device 10 includes a card type drive main body 20 for recording and reproducing information on an information recording medium accommodated in a disk cartridge 1, and a flat cover member 30 attached to the drive main body 20. It has. An accommodating portion 25 for accommodating the disc cartridge 1 is provided between the drive main body 20 and the cover member 30, and the disc cartridge 1 is inserted from an insertion port 10 a provided in front of the drive main body 20 and the accommodating portion. 25, the drive main body 20 records and reproduces information.
[0017]
The drive body 20 includes a rotation driving unit 21 for rotating the information recording medium 5 and a recording / reproducing head 22 for accessing the surface of the information recording medium 5 rotated by the rotation driving unit 21 to record and reproduce information. A swing arm 23 is provided at the tip for swinging the recording / reproducing head 22 in the direction of arrow R10 on the information recording medium 5.
[0018]
FIG. 4 is a plan view showing a state in which the disk cartridge 1 is loaded in the card type drive device 10. In FIG. 4, when the disc cartridge 1 is loaded in the card type drive device 10, the rotary shutter 7 is opened so that the information recording medium 5 faces the outside through the opening 6. The recording / reproducing head 22 accesses the information recording medium 5 from the opening 6 to record / reproduce information.
[0019]
Here, the opening 6 is formed in a substantially V shape, and in the radial direction of the information recording medium 5 along the outside of the movement trajectory of the tip of the swing arm 23 in a state of being loaded in the card type drive device 10. The first edge portion 16a is formed, and the second edge portion 16b is formed in the radial direction of the information recording medium 5 along the extending direction of the swing arm. The opening 6 is provided over a region where the swing arm 23 swings in the direction of the arrow R10 in order to move the recording / reproducing head 22 in the radial direction of the information recording medium 5, and the recording / reproducing head 22 has an opening. 6, the information recording medium 5 is accessed in the vicinity of the second edge portion 16 b.
[0020]
Further, the rotation drive unit 21 rotates the information recording medium 5 in the direction of the arrow R2. Therefore, the first edge portion 16a of the opening 6 is upstream of the rotation of the information recording medium 5, and the second edge portion. Reference numeral 16b denotes the downstream of the information recording medium 5. Accordingly, the recording / reproducing head 22 accesses the information recording medium 5 in the vicinity of the first edge portion 16a AR on the upstream side of the opening 6. Since the upstream side of the opening 6 has little surface vibration, it is possible to prevent the recording / reproduction characteristics from being deteriorated due to surface vibration when information is recorded / reproduced on / from the information recording medium 5.
[0021]
That is, as described above, since the information recording medium 5 has flexibility, surface shake is likely to occur when the information recording medium 5 faces the outside from the opening 6. This surface vibration is larger in the downstream of the information recording medium 5 than in the upstream of the rotation. Therefore, as in the prior art, even when the recording / reproducing head 22 is accessing the information recording medium 5 in the vicinity AR of the first edge portion 16a, the information recording medium 5 is rotated in the direction of the arrow R1 by the rotation driving unit 21. Therefore, the information recording medium 5 is accessed downstream of the rotation, which is not preferable from the viewpoint of recording / reproducing characteristics.
[0022]
On the other hand, in FIG. 4, the recording / reproducing head 22 accesses the information recording medium 5 in the vicinity AR of the first edge portion 16a, and the information recording medium 5 is further rotated in the direction of the arrow R2 by the rotation driving unit 21. (See FIG. 5) Since the information recording medium 5 is accessed upstream of the rotation, it is possible to reduce the deterioration of the recording / reproducing characteristics due to the surface shake.
[0023]
The embodiment of the present invention is not limited to the above embodiment. For example, in FIG. 4, the recording / reproducing head 22 is provided at the tip of the swing arm 23, but any recording medium may be used as long as it accesses the information recording medium 5 in the vicinity AR of the first edge portion 16 a. For example, the vicinity AR of 16a may be in a range of a distance of about (3 to 6 mm) from the first edge portion 16a to the downstream side in the circumferential direction.
[0024]
Further, in FIG. 4, the recording / reproducing head 22 has a configuration in which the vicinity of the second edge portion 16b is swung, but an arrangement structure in which the vicinity of the first edge portion 16a is swung may be employed. In this case, the rotation drive unit 21 rotates the information recording medium 5 in the arrow R1 direction so that the first edge portion 16a side is upstream of the rotation.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a preferred embodiment of a card type drive device of the present invention. FIG. 2 is a diagram showing a rotary shutter in a preferred embodiment of a disk cartridge loaded in the card type drive device of the present invention. FIG. 3 is an exploded perspective view showing a preferred embodiment of the card type drive device of the present invention. FIG. 4 is a plan view showing a preferred embodiment of the card type drive device of the present invention. FIG. 5 is a perspective view showing an example of a conventional card type drive device.
DESCRIPTION OF SYMBOLS 1 Disc cartridge 5 Information recording medium 6 Opening part 7 Rotary shutter 10 Card type drive apparatus 10b Connector 20 Drive main body 21 Rotation drive part 22 Recording / reproducing head 23 Swing arm

Claims (1)

A rotation driving unit that rotates a disk-shaped information recording medium accommodated in a housing of the disk cartridge, and information is recorded by accessing the information recording medium rotated by the rotation driving unit from an opening formed in the housing. A card-type drive device comprising a swingable swing arm having a recording / reproducing head to be reproduced at a tip thereof, wherein the housing moves the recording / reproducing head in a radial direction of the information recording medium. In a card type drive device that can be loaded with a disk cartridge having an opening opened over a region where the swing arm swings,
The card-type drive device characterized in that the recording / reproducing head moves along the vicinity of the edge portion on the rotation upstream side of the information recording medium in the opening.

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