CN1135642A - Negative-pressure type magnetic head slide-block and magnetic-disk device containing said slide-block - Google Patents
Negative-pressure type magnetic head slide-block and magnetic-disk device containing said slide-block Download PDFInfo
- Publication number
- CN1135642A CN1135642A CN96102509A CN96102509A CN1135642A CN 1135642 A CN1135642 A CN 1135642A CN 96102509 A CN96102509 A CN 96102509A CN 96102509 A CN96102509 A CN 96102509A CN 1135642 A CN1135642 A CN 1135642A
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- Prior art keywords
- slider
- disk
- head
- airflow
- negative pressure
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
- G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
- G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
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- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
In a subpressure magnetic head slide block, a magnetic head element mounted on a seamed edge at the tail part of the magnetic head slide block can stably maintain a small clearance amount and is provided with following arrangements: a subpressure generating center position on a floating surface is arranged at the edge side of a front corner relative to a load force applying position; thereby leading the magnetic head slide block to have a stable reading/writing performance and being capable of reducing dangers that the magnetic head slide block damages the data on the surface of a disk and generates magnetic head impact. When a disk device is provided with the subpressure magnetic head slide block, the clearance amount of the magnetic head element can stably maintain a very low numerical value; thereby leading the disk device to have the stable reading/writing performance.
Description
The present invention relates to a kind of negative-pressure type magnetic head that is applicable to disk set, more particularly relate to a kind of negative-pressure type magnetic head that can stably float over the disk top with a little gap value.
Usually, disk set must reduce and is being installed on magnetic head element on the head-slider and the gap value between the disk, in addition, also must stably keep magnetic head to float, so that increase the density of recording of the data that record on this disk with a given gap value.
Flowing into the disk of high speed rotating and one viscous air draught between the head-slider floats head-slider.Yet because the viscous air draught supporting a shoe surface, when the air-supported surface of slide block has the foozle of permission, or when the rotation generation dynamic change of disk, above-mentioned gap value also is easy to generate change.The change of this gap value may influence read, and further causes the bump between head-slider and the disk, thereby the information that causes being recorded on the disk is destroyed.In order to tackle this problem, magnetic head must stably keep a predetermined gap value in disk set.
In prior art, once recommended a kind of so-called negative-pressure type magnetic head slide-block, suggestion is used for stablize the unsteady device in the little gap of magnetic head with it as a kind of.The measure of this negative-pressure type magnetic head slide-block minimizing gap value is as follows: be used for producing facing on the shoe surface of disk of normal pressure at one and make a groove, the negative pressure that plays the effect of absorption disk is just generated by this groove, and negative pressure and normal pressure balance.
Learn, because negative pressure is inversely proportional with the distance that arrives magnetic disk surface, this negative-pressure type magnetic head slide-block can promptly leave magnetic disk surface, thereby improves the wear resistance of head-slider, described groove can be machined into random shape, and this slide block is easy to make.
For example just once disclosed the negative-pressure type magnetic head slide-block of this prior art JP-B2-63-56635 number.
In only utilizing a kind of head-slider that is floated by the normal pressure of viscous air-flow generation, normally, when the airflow that is caused by the disk rotation entered side of slide block, the gap value on this side increased; And when airflow flowed out from a side of this slide block, this place's gap value reduced; And a magnetic head element (magnetic reset coil) is installed on the position of gap value minimum of slide block, that is to say, and near the slide block rear end, the spacing minimum between this place's magnetic disk surface and slide block.
Yet this positive pressure type head-slider has following shortcoming: the permission foozle of head-slider and magnetic head supporting spring all can change above-mentioned gap value.And, when disk set moves, the gap value of described head-slider is easily owing to apply the external force of variation, for example disk is sought the external force that operation causes, external force that air-flow between magnetic head and disk causes or the like, and produce dynamically change, thus cause another shortcoming of positive pressure type head-slider, promptly data on the disk and magnetic head all may damage because of head crash.
Also have, though above-mentioned traditional negative-pressure type magnetic head helps to dwindle gap value, because the gap value permissible error that manufacture process produces, and, all do not obtain enough improvement because the gap value that the dynamic change of disk set when operation causes changes.Therefore, provide the magnetic head with stable little gap value remain the difficulty.Particularly, in nearest disk set,, more and more need to reduce the foozle and the variable quantity thereof of gap value to gap value owing to do to such an extent that lessly can increase recording density.Therefore, the shortcoming of this traditional negative-pressure type magnetic head slide-block is to address the above problem.
In order to overcome the shortcoming of above-mentioned prior art, the objective of the invention is: a kind of head-slider and a kind of disk set that comprises this head-slider that can stably keep little gap value is provided.
In order to reach above-mentioned target, the invention provides a kind of negative-pressure type magnetic head slide-block, be applied with load power on this slide block, and under the effect of viscous airflow, generate a normal pressure, described airflow flows through from a shoe surface owing to the disk high-speed rotation, thereby make slide block overcome load power, float with respect to disk; And this slide block also generates a negative pressure under this viscous airflow effect, and described airflow enters a groove that defines on this slide block floating surface, thereby makes slide block near disk; It is characterized by, a negative pressure of this shoe surface generates the center for load power applies the position, is positioned at viscous air-flow inflow side.
In addition, be used for making the negative pressure head-slider under load power and negative pressure effect, to equal to be used for power that head-slider is floated under positive pressure near being preferably made of magnetic head near power, and, the negative pressure of described shoe surface generates the center, for load power applies the position, be positioned at viscous air-flow inflow side, so that between disk element and disk, keep a constant gap.
In more detail, when the described floating surface of negative-pressure type magnetic head slide-block equally is divided into four parts, perhaps arrange first to fourth part along airflow direction from the leading edge (the relative wind flow direction) of slide block, normal pressure generates surface and negative pressure and generates surperficial relation and be with such sequencing: normal pressure is greater than negative pressure in first, normal pressure is less than negative pressure in second portion, normal pressure is approximately equal to negative pressure in third part, and in the 4th part normal pressure greater than negative pressure.
Because generating the center, the negative pressure of described shoe surface for load power applies the position, is positioned at viscous air-flow inflow side, even there is an external force to act on the shoe surface, and described external force is when attempting to dwindle magnetic head element gap value at afterbody seamed edge place (this moment, external force made slide block move on to above-mentioned attitude), because negative pressure opposing external force, head-slider also can keep the slide block attitude, make the gap value of magnetic head element keep predetermined numerical value, thereby can stably keep a little gap value.
Fig. 1 is the side elevational view according to a head-slider embodiment of the present invention.
Fig. 2 is a flat sheet of the bottom view, a floating surface of this embodiment of the invention head-slider that draws.
Fig. 3 is used for explaining that the unsteady attitude of said head slide block embodiment changes.
Fig. 4 is used for explaining the size relationship of head-slider among this embodiment.
At first introduce below according to a negative-pressure type magnetic head slide-block embodiment of the present invention.
In Fig. 1, draw one as the negative-pressure type magnetic head slide-block of the embodiment of the invention side when floating.When head-slider 2 of the present invention at the effect of the disk 10 of the high-speed rotation time-out of floating downward, see its attitude over from the side just as shown in Figure 1, the part 22 of splaying that is positioned at the slide block end of airflow Inbound 1 is floated a gap value 11 from disk 10, and a magnetic head element 3 that is attached at slide block rear end (air-flow flows out from here) floats a gap value 12 from disk 10, so that this head-slider 2 keeps a kind of front side that guides seamed edge to be higher than the afterbody seamed edge to lift attitude.This attitude of slide block 2 is keeping with the mode of normal pressure 6 balances with load power 4, negative pressure 5, described load power 4 makes slide block 2 press to disk 10 by a pivot or analog, and negative pressure 5 and a normal pressure 6 balances, described normal pressure 6 is lifted slide block 2 under the effect of an airflow that flows to slide block floating surface 7 from disk 10, load power 4 and negative pressure 5 are all expressed with arrow in the drawings.Distribute (hereinafter will be described) according to the shape of slide block floating surface separately although be noted that negative pressure 5 and normal pressure 6, for the purpose of understanding, this introduce in the example pressure that they is drawn in separately generate in the heart.
As shown in Figure 2, the floating surface 7 of head-slider 2 comprises: 23, one normal pressures of 22, one traverse rods of part of splaying generate 24, one negative pressure of rail and generate slot part 25 and a crack groove 21; The described part 22 of splaying tilts, and it can be being directed on the floating surface 7 along air-flow direction 1 flow air stream; The described traverse rod 23 and part 22 adjacency of splaying are used for admitting airflow; Described normal pressure generates rail 24 and traverse rod 23 adjacency, is used to generate normal pressure, and described negative pressure generates slot part 25 and is used to produce negative pressure; And described crack groove 21 is used for an airflow and guides negative pressure into along air-flow direction 1 and generate slot part 25.It is to be used in the method for making a groove on the flat normal pressure generation rail 24 to form that negative pressure generates slot part 25, it has negative pressure wideer than crack groove 21 and generates well width 26, described width 26 begins to narrow to gradually a negative pressure from traverse rod 23 towards the rearward end of afterbody seamed edge and generates well width 27, flows through airflow about traverse rod 23 rear ends so that discharge from crack groove 21.The degree of depth that negative pressure generates slot part 25 is about several microns.And normal pressure generation rail 24 is divided into left and right sides two parts by slot part 25, and is narrower at the rearward end place of traverse rod 23 track width, widens gradually towards afterbody seamed edge direction then.
For the head-slider of this structure, the negative pressure of floating surface 7 generates a rearward end position and the ratio between two width of negative pressure generation slot part that traverse rod 23 is depended in the center, and described ratio is preferably 5: 2.It is near negative pressure generation well width 26 traverse rod 23 back-end locations and the ratio that generates well width 27 in the negative pressure of afterbody seamed edge position that the negative pressure that herein relates to generates the slot part width ratio.In addition, the rearward end position of traverse rod 23 will be determined according to the position that applies of load power 4.
For instance, as shown in Figure 4, the position that loads when load power pivot by head-slider 2 and so on is arranged at such position, the distance that the guiding seamed edge of slide block 2 is left in this position is 65% o'clock of slide block 2 longitudinal lengths, as long as guide the position arrangement of traverse rod rearward end the position of seamed edge about 20% just enough leaving slide block.Because this arrangement, the center of negative pressure 5 is determined by the rearward end position of traverse rod 23 and the ratio of above-mentioned negative pressure generation well width, is positioned in load power 4 and applies on the position in the place ahead, position about 25%.The gap value that this position is enough to remain on magnetic head element 3 positions is constant.
In negative-pressure type magnetic head slide-block embodiment mentioned above, in normal quick condition, slide block floating surface 7 is set on the position of the unsteady attitude line 70 of a balance shown in Fig. 3 dotted line.Under this state, when applying an external force (snap power) 13 along the direction that reduces afterbody seamed edge gap value 12, the gap value 12 at afterbody seamed edge place is almost constant, and change along the direction that makes slide block floating surface 7 leave disk 10, so that move to the position of the attitude line 9 that floats at the gap value 11 at guiding seamed edge place.
This be because, negative pressure 5 acts on downwards on the position shown in Figure 3, therefore, even if the external force of applying, a substantially effect of the center of rotation of balance can be played in magnetic head element 3 positions on the afterbody seamed edge, so gap value can change hardly.Otherwise, in a traditional head-slider, because negative pressure 5 is not in position shown in Figure 3, when applying an external force (snap power) 13 along the direction that reduces afterbody seamed edge gap value 12, the end of slide block 2 is floated to the position of a unsteady attitude line 8 of representing with dot-and-dash line, so that the gap value of magnetic head element 3 is compared with the initial clearance space amount 12 at afterbody seamed edge place, relatively reduced.In this case, magnetic head element 3 might damage the latter's cling property near magnetic recording medium 10.
As mentioned above, in this head-slider embodiment of the present invention, arrangement has been made in the position that applies to track on the floating surface and load power, make the position of negative pressure center, normal pressure center, load power position and magnetic conversion element begin to arrange in this order from the guiding seamed edge, in this case, importantly the center of negative pressure is set on the position crossing over load power position for the magnetic head element position.That is to say, negative pressure product and one can play the effect that prevents that the magnetic head element gap value from changing from the negative pressure center to the distance of load power (snap power) center, described magnetic head element is installed on the afterbody seamed edge of head-slider, thereby has prevented the generation of this change basically.Specifically, this embodiment according to head-slider, because the center of negative pressure is for the magnetic head element position, be set on the position crossing over load power position, when the external force 13 (snap power) of same order when pitch orientation works, compare with traditional magnetic head element, the change of the gap value 12 of magnetic head element 3 can be arrived 1/10th of traditional change amount less and be arrived per mille.
Claims (12)
1. negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described head-slider flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on this slide block, floats with respect to disk; It also generates a negative pressure under one airflow effect in addition, and described airflow flows in the groove that defines on described head-slider floating surface, thereby makes described slide block near described disk; Described head-slider comprises:
A magnetic head element, it is installed on the afterbody seamed edge of described head-slider, and be used for reproducing with data recording or to described disk or from it, a described negative pressure on the floating surface of described head-slider generates the center for a described load power applies the position, is positioned at preceding seamed edge one side of slide block.
2. negative-pressure type magnetic head slide-block according to claim 1, it is characterized by, be used for making described head-slider under described load power and described negative pressure effect near of described disk near power, equal one and be used for the power that under described positive pressure, described head-slider floated, and the described negative pressure on the described head-slider floating surface generates the center for a described load power applies the position, be positioned at described preceding seamed edge one side, so that between a magnetic head element that is mounted and described disk, keep a constant gap.
3. negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described head-slider flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on this slide block, floats with respect to disk; It also generates a negative pressure under one airflow effect in addition, and described airflow flows in the groove that defines on described head-slider floating surface, thereby makes described slide block near described disk, and this head-slider comprises:
A magnetic head element, it is installed on the afterbody seamed edge of described head-slider, and be used for data recording is reproduced data to described disk and from described disk, when a longitudinal length of described head-slider equally is divided into four parts, perhaps arrange first to fourth part along airflow direction from the preceding seamed edge of slide block, it is with such sequencing that normal pressure generates surface and negative pressure generation surface: in normal pressure described in the described first greater than described negative pressure, in normal pressure described in the described second portion less than described negative pressure, be approximately equal to described negative pressure in normal pressure described in the described third part, and in normal pressure described in described the 4th part greater than described negative pressure.
4. negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described head-slider flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on this slide block, floats with respect to disk; It also generates a negative pressure under one airflow effect in addition, and described airflow flows into a groove that defines on described head-slider floating surface, thereby makes described slide block near described disk, and this head-slider comprises:
A magnetic head element, it is installed on the afterbody seamed edge of described head-slider, and be used for data recording is reproduced data to described disk and from described disk, a described negative pressure center, described normal pressure center, described load power apply the position and a described magnetic head element position begins to arrange according to said sequence along described airflow inflow direction; Negative pressure described herein is used for making described slide block near described disk, and is generated by the described airflow that flows into the described groove that defines on described head-slider floating surface; And described normal pressure is used for making described head-slider to float with respect to described disk, and is generated by the airflow that the rotation of described disk causes.
5. negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described head-slider flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on this slide block, floats with respect to disk; It also generates a negative pressure under one airflow effect in addition, and described airflow flows into a groove that defines on described head-slider floating surface, thereby makes described slide block near described disk, and this head-slider comprises:
A magnetic head element, it is installed on the afterbody seamed edge of described head-slider, and is used for data recording is reproduced data to described disk and from described disk;
The described floating surface of described head-slider comprises:
The part of splaying, it tilts towards a preceding seamed edge, so that guide described airflow to flow on the described floating surface;
A traverse rod, it and the described part adjacency of splaying are used for admitting described airflow;
Normal pressure generates rail, and it and described traverse rod adjacency are with generating described normal pressure;
A negative pressure generates slot part, and it is to use the mode that is recessed on from a floating surface of described normal pressure generation rail to form, with generating described negative pressure;
And a crack groove, it is defined by described part and the described traverse rod splayed that separates, and is used for guiding described airflow to enter described negative pressure and generates slot part.
Wherein said normal pressure generates rail and has a track width, and described track width begins to increase gradually from the rearward end towards the afterbody seamed edge of described traverse rod, states normal pressure in described rearward end place and generates rail and described traverse rod adjacency.
6. negative-pressure type magnetic head slide-block according to claim 5 is characterized by, and generates well width in negative pressure of described traverse rod rearward end and is configured to 5: 2 with ratio between the negative pressure generation well width at described afterbody seamed edge.
7. disk set, it comprises a disk, the drive unit that described disk is rotated, a head-slider and a mechanism; Described head-slider is owing to the rotation of described disk is floated, so that by means of a superincumbent magnetic head element of installation, data recording is reproduced to described disk or from it; And described mechanism is by means of the load power that applies, make described head-slider press close to described disk, and with respect to the described head-slider of described disk rotatably support, wherein said head-slider is a kind of negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described slide block flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on the described slide block, floats with respect to described disk; In addition, it also is used for forming a negative pressure under one airflow effect, and described airflow flows into a groove that defines on described head-slider floating surface, thereby makes described slide block near described disk;
On an afterbody seamed edge of described head-slider a magnetic head element is housed, it is used for data recording to described disk, and reproduces data from described disk;
A described negative pressure on the described head-slider floating surface generates the center for a described load power applies the position, seamed edge one side before being positioned at.
8. disk set according to claim 7, it is characterized by, described negative-pressure type magnetic head slide-block is to arrange like this, so that be used for making described head-slider under described load power and described negative pressure effect near of described disk near power, equal one and be used for the power that under described positive pressure, described head-slider floated, and the described negative pressure on the described head-slider floating surface generates the center for a described load power applies the position, be positioned at described preceding seamed edge one side, so that between a magnetic head element that is mounted and described disk, keep a constant gap.
9. disk set, it comprises a disk, the drive unit that described disk is rotated, a head-slider and a mechanism; Described head-slider is owing to the rotation of described disk is floated, so that by means of a superincumbent magnetic head element of installation, also can reproduce data to data recording from described disk to described disk; And described mechanism makes described head-slider press close to described disk by means of the load power that applies, and with respect to the described head-slider of described disk rotatably support, wherein said head-slider is a kind of negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described slide block flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on the described slide block, float with respect to described disk; In addition, it also is used for forming a negative pressure under one airflow effect, and described airflow flows into a groove that defines on described head-slider floating surface, thereby makes described slide block near described disk;
On an afterbody seamed edge of described head-slider a magnetic head element is housed, it is used for data recording to described disk, and reproduces data from described disk;
When a longitudinal length of described head-slider equally is divided into four parts, perhaps the preceding seamed edge from slide block begins to arrange first to the 4th part, relation between negative pressure described in the various piece and described normal pressure is set to: in normal pressure described in the described first greater than described negative pressure, in normal pressure described in the described second portion less than described negative pressure, be approximately equal to described negative pressure in normal pressure described in the described third part, and in normal pressure described in described the 4th part greater than described negative pressure.
10. disk set, it comprises a disk, the drive unit that described disk is rotated, a head-slider and a mechanism; Described head-slider is owing to the rotation of described disk is floated, so that superincumbent magnetic head element is installed by means of one, to described disk, and can reproduce data to data recording from described disk; And described mechanism arranges described head-slider to press close to described disk by means of the load power that applies, and with respect to the described head-slider of described disk rotatably support, wherein said head-slider is a kind of negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described slide block flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on the described slide block, float with respect to described disk; In addition, it also is used for forming a negative pressure under one airflow effect, and described airflow flows into a groove that defines on described head-slider floating surface, thereby makes described slide block near described disk;
On an afterbody seamed edge of described head-slider a magnetic head element is housed, it is used for data recording to described disk, and reproduces data from described disk;
A described negative pressure center, a described normal pressure center, described load power applies the position and arrange according to said sequence since a preceding seamed edge a described magnetic head element position; Negative pressure described herein is used for making described slide block near described disk, and is generated by the described airflow that flows into the described groove that defines on described head-slider floating surface; And described normal pressure is used for making described head-slider unsteady with respect to described disk, and the rotation of described disk causes described airflow, and described normal pressure is just generated by described airflow.
11. disk set according to claim 10 is characterized by, described head-slider is to arrange like this, so that:
The center of the described negative pressure that generates, the distance that is positioned at the preceding seamed edge that leaves described head-slider is on the position of described head-slider longitudinal length 40%.
And the center of load application power, the distance that is positioned at the preceding seamed edge that leaves described head-slider is on the position of described head-slider longitudinal length 65%.
12. a disk set, it comprises a disk, the drive unit that described disk is rotated, a head-slider and a mechanism; Described head-slider is owing to the rotation of described disk is floated, so that superincumbent magnetic head element is installed by means of one, to described disk, and can reproduce data to data recording from described disk; And described mechanism arranges described head-slider to press close to described disk by means of the load power that applies, and with respect to the described head-slider of described disk rotatably support, wherein said head-slider is a kind of negative-pressure type magnetic head slide-block, it is used for generating a normal pressure under the effect of one airflow, a floating surface from described slide block flows through this airflow because disk rotates, thereby head-slider is overcome be applied to the load power on the described slide block, float with respect to described disk; In addition, it also is used for forming a negative pressure under one airflow effect, and described airflow flows into a groove that defines on described head-slider floating surface, thereby makes described slide block near described disk;
On an afterbody seamed edge of described head-slider a magnetic head element is housed, it is used for data recording to described disk, and reproduces data from described disk;
A center of described negative pressure is positioned at the described load power of leap and applies on the position of position for described magnetic head element position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP032502/95 | 1995-02-21 | ||
| JP7032502A JPH08227514A (en) | 1995-02-21 | 1995-02-21 | Magnetic head slider utilizing negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1135642A true CN1135642A (en) | 1996-11-13 |
Family
ID=12360773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96102509A Pending CN1135642A (en) | 1995-02-21 | 1996-02-17 | Negative-pressure type magnetic head slide-block and magnetic-disk device containing said slide-block |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH08227514A (en) |
| KR (1) | KR960032458A (en) |
| CN (1) | CN1135642A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100268582B1 (en) * | 1997-07-25 | 2000-10-16 | 구자홍 | Magnetic head slider and thereof manufacturing method |
| KR100268584B1 (en) * | 1997-07-25 | 2000-10-16 | 구자홍 | Magnetic head slider |
| US7095592B2 (en) | 2001-03-27 | 2006-08-22 | Matsushita Electric Industrial Co., Ltd. | Head slider and disk drive apparatus |
| SG107115A1 (en) | 2001-10-02 | 2004-11-29 | Matsushita Electric Ind Co Ltd | Head slider and head supporting device and disk drive |
| US7095593B2 (en) | 2002-09-27 | 2006-08-22 | Matsushita Electric Industrial Co., Ltd. | Apparatus with head and head support device having rotation supporting point |
-
1995
- 1995-02-21 JP JP7032502A patent/JPH08227514A/en active Pending
-
1996
- 1996-02-17 CN CN96102509A patent/CN1135642A/en active Pending
- 1996-02-17 KR KR1019960004005A patent/KR960032458A/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08227514A (en) | 1996-09-03 |
| KR960032458A (en) | 1996-09-17 |
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