JPS62264490A - Delta type head slider and making thereof - 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 Fluid support on a moving magnetic recording medium - [gamma slider (Oclla
,') 1idar) j is 8S to the air support surface
h is disclosed. The edges of this AB S are relatively narrow (and sharp), and a method for making such a sliver is also disclosed.

The present invention relates to a magnetic head swing assembly, and more particularly to an air support slider assembly used for non-contact recording of magnetic disk files and the like.

[Prior Art and Features of the Invention] A magnetic head assembly including a slider holding a magnetic dual converter is used in a magnetic recording device, Ti1. : Widely used in disc recording devices. Moving record 9! X
Various types of head/slider devices that fly on a fluid or air support membrane over a large body surface are well known in the art (such as 'r i! air disc-L'). Transformations on the medium to maximize the density of stored data:
The flight altitude of S requires that a substantially constant 0 degree be maintained and can be reduced to practical 'cd'. Traditionally Hiha, Sujizogu (Yonor)
When the disc is rotating, remove the desired lit from the disc surface.
) f
2161+ are designed to experience a constant JL force from their support arms against the surface of the chair 9, with the lifting force of the pneumatic support.

1-1 of this 51 article is a new and An improved air supported slider is provided.

Another objective is to make the head slider Allen f1 insensitive to J3 and disk curvature or flutter, thus increasing the stiffness J3 and stability of the high support 121.
There is always something to offer.

14 & Magnetic head arrays flying over air media have been widely used. The purpose of improving the non-contact transduction relationship between magnetic recording media, such as magnetic transducers and rotary discs, is to improve the non-contact transduction relationship between the transducer and the disc.
:, Always close! , it is possible to quickly create two intervals, and to make a stable constant interval coarse). When used in conjunction with a very narrow transducer I/J3 and a very thin magnetic 'λ recording source, the close spacing makes it possible for high wavelengths and high frequencies to be recorded;
This gives a record of high storage capacity 11 at i00 degrees. As 1-day recording technology advances, the packaging density of magnetic disks increases, and in order to reduce the ga more 1
1! My favorite 1), 4r a),.

ωl research is aware of the prior art for utilizing Ln air 1.1 i slig assembly. For non-contact recording on magnetic disks (fixed), fill research refers to the accumulation of information stored on magnetic disks, for example.
I know how to install such a magnetic head assembly (with an air support slider) in the A-17 projector.

There are many efforts to increase the density of storage on such magnetic disks, for example, research is attempting to narrow the width of the disk's tracks.

Among the various types of known slider configurations are the Garni
cr US 1'r:'f No. 3.855.625
No.(Self RfP<5ell 1oadin(+>)
, RoscaIIlp et al., US Pat. No. 4.081,
8464”4 and W3rner U.S. Pat. No. 3,82
No. 3,416 Piper et al. No. 1, 754
, No. 104 1-Limaran structure, in which the transducing heads are spaced apart from each other in the form of a triangle, with each block having 1!
11 It is supported by the three pads in Notes 3 and 11.

One type of slider that has been developed and may possess some self-loading characteristics is that shown in the Garnier et al. patent. It has two air support rails extending (with a sloping section at the leading edge and a rectangular recess between them) at the trailing edge, known as a tapered flat i (! shape). This slug offers many satisfying features. Its structure is somewhat contrary to the structure in which a bar-shaped recess is provided in the air supporting night rail.・11 for the low pressure area for )? The device is therefore substantially self-loading in that it tends to fly at a distance controlled by the relationship between the rectangular recess and the fluid support rail over the surface of the medium. However, Qal
'n! The Or et al. structure suffers from several major disadvantages in both fabrication and operation. Since the recessed area of the structure is rectangular and surrounded on three sides by walls, surface cutting is required in the fabrication of the device to produce the required form. The need for tweezing severely limits the types of filtration that can be used, and the edges are substantially perpendicular to the air-bearing surface or , acting as a collector of debris and 5'4 material, the accumulation of the material in this cavity greatly alters the operating conditions 17 of the slider and head assembly.

Even the Roscamp'8 and W arner slider configurations allow 1 g of abrasion to be placed in a limited area between the sight rails.
J3゜J: I like wrapping! ;? 1111i processing is required1, and the need to do so is due to manufacturing costs and
This may have a negative impact on production yield.

In Figure 1, air branches extending over the length of the slider), r
Conventional prior art "self-loading" in the form of a tapered-flat opening with a slope 22' leading to a slide rail 24'
A slider 20' is illustrated. The leading edge of the slider cross-rail 26-(hollow:)o-01f and self-v1 overlap) extends between the two (J-id rails 27'!-)
[Lee. A suitable magnetic transducer 28', shown schematically in phantom rH, is provided at the end of the transducer.

This prior art slider 20- has flight altitude +, 13
A rectangular negative pressure cavity 30' closed on one side by the sight rail 24- and the cross rail 2G- is F! Q+J
controlled by , this cavity 30' is generally formed by various etching techniques! The yJ construction method forms side walls 32' and 34- between the bottom of the cavity 30- and the sight rail 24' and the horizontal rail 26';
This side wall is generally perpendicular to the surface of the sight rail and side rail, which is a disadvantage. Sudden cracks at the leading edge of the recess 30' as well as between the fluid bearing port surface and the side walls tend to trap L'A J3 and debris, making continued flight altitude control difficult. .

As noted by L''CC, what is necessary to form such a structure by J-Zing is that the slider is manufactured from it and the manufacturing method is 1 The present invention provides an "flux slider" which overcomes many of the disadvantages of the prior art. Air Medium! [Cao] The purpose is to create a new delta slider that allows the magnetic head to fly at a substantially constant distance.

Another purpose of this y5 light is to set the delta slider that leads to the resistance in the []-le to V? There are many things that can happen.

A further object is to provide a slider that is simple and economical to manufacture.

To accomplish the foregoing, as well as other objects that will become apparent below, the present invention provides a delta system for flying a magnetic head on a fluid support with respect to a recording medium moving in a predetermined direction. IHljt BS to type slig
,, the slider includes a B S to the slider whose area increases as the area advances from the 11η direction to the 1° direction. FIG. Showing the RAD slider to the support. The slider may be formed with an air support surface that is a shell 11, a tapered flat 11, or a variation of a pond surface.

The form of the slider is sight rail 11 that allows you to hear two intervals.
2 and 114 and a cross rail 116. ,,ω
The leading portion of each rail 112 and 114 with respect to the data track containing section 118 is
JJ is formed by tapering the groove 120. A recessed 1p portion 119 is formed between the tapered sections and at the leading end of the slider adjacent the cross rail 10.

Thin Its! The magnetic transduction unnecessary IA 122a j3 and 122b, which may be 7 hinges of the slider tail with respect to the path of movement of the data track found, for example, in a rotating magnetic disk (not shown) u 55 *i 122 a and 1 glued at end 113 to the ends of rails 112J3 and 114
22b conversion Gillep is sight rail 112 oni r7
114 Which surface is coplanar with C? The Sligua amplifier has λ, i l,
U? ='i ti When it is energized by means, J1 is always a small but constant distance 11111 'r''
Establish a thin air lubrication I19 separating the converter cooker gear I19 from the disk.

Negative pressure zone 124 is formed by the sight rail and cross rail configuration. , a negative pressure zone is created in the area of a recess of depth similar to the step 11 which will be approximately 10 microns following the cross rail section 1 and between the two sight rails 112 and 114. .

To provide optimal opposing loading forces and achieve machine stability that is insensitive to distortion and disc curvature, or flutter, while maintaining high stiffness1612
: Relief or recess areas 126J3 and 12
8 is formed by the exposed surface J3 of the nide 1 and the air bearing surface of the slider. The recesses 126J3 and 128 are formed by, for example, r, +i id L
To the depth of the knoll; 1. (11-1 of the flight operation of the head slider, recess section III!1)
26J3J: and 128 1) - Id 1 Nord b essentially ambient or slightly 1- ambient pressure state 11
Recesses 126 and 128 are preferably formed to a depth in the range of 0.5 to 3 microns. , cross rail 116 t) may also be embossed to the same depth as the recess under the K surface during the same J-building stage, the sight rail q).

FIG. 53 shows, for reference, an external The slider boundary is at atmospheric pressure. Zone t, between Baca Peaks (136 and 144 and 134 and 142)! zones 126 and 12 having substantially the same standard pressure as the surroundings, and respectively carved out (of the idle rail).
It is related to 8. , two protruding 1F pressure zones 1
34, 3 J, and 136 are generally associated with the erosion surfaces 138, J, and 1/lo of the sight rails 112J3 and 114, respectively.
42 and 144 are associated with the front portion 146 and 148 of the night rail. This exemplifies a 4 point 1 slig recording contact. (US IT, 11?F revision 4th
．． 21 B, 715'3 (see also)) The features and advantages of these J3 songs of this invention are as follows: Reference is made to the following detailed description of a preferred embodiment of the invention in conjunction with the drawings of =J (not necessarily a constant:':'I combination). In research, it is recognized that C is better understood in [by].

DESCRIPTION OF BACK BAR FEATURES FIGS. 4-6 illustrate a self-type slider assembly 20 configured and modified according to back bar features, including this and others discussed in all embodiments. Related technology a3 and means of generally otherwise 1
3. Unless otherwise specified, it will be constructed and operated as is well known in the art, and unless otherwise specified, herein. It will be understood that all materials, methods, and apparatus in accordance with this fine practice are realized by known means.

In particular, FIGS. 4-6 show a slider 20 which has been modified to include a predetermined "full back bar" 21 and a "virgin +7 channel" 23 extending transversely to the direction of slider flight (arrow). I11! schematically shows It will be understood. The slider 2° has a pair of positive pressure side rails 2O-R120-11' (projecting gl oblique lead tips 20-T, 20- T-), plus a predetermined precise dimension (typically a few hundred microinches).
C'') comprises a ceramic body 1 with a very shallow internal aerodynamic cavity 20-C (or ``negative pressure 1 anel, 1), and as before in terms of (Itl!) τ
It will be recognized.

[Back bar J21 and its intermediary ((73 appropriate)
To accommodate a "purge channel" of dimensions 2:3,
tl Advantageous effects can be added to the UI by predetermined extensions of slider goodness.
+ pumped out, they reduce the pressure to a minimum (popular) and cause dust particles to fly off the transducer end (Nusl+
) has been found to be effective. The name of the research is debris occlusion, P1R, cavity L (
For example, this is a destructive head! ii. We know that we must protect against (55 possible) attacks.

Here some amount of debris build-up is virtually guaranteed in sliders like the King.

For example, a type 1 filter [r99.999%] properly used in equipment such as
Excludes all air pollutants larger than 2 microinches1, which is larger than most smoke particles (commonly ~25 microinches)
0 microinch) should be excluded. However, there are a large number of small airborne contaminants present in the shallow cavity (particularly at its trailing edge) and/or in the shallow cavity.
, R easily accumulates and weighs 1g. [For example, normally,
All 2 air from air, particles from media such as smog and popular dust and fumes, rosin protection, metal dust and fumes, and viruses''+71, thus avoiding such problems. 1) There is a need in the art for a better slider that reduces contaminants.

Thus, one of the features herein is that the contaminant-free flying slider has been improved to:
A back bar 1 and associated lateral purge cavities are provided which are adapted to accommodate a large number of fish heads at the lowest point of the Zunawara slider's flight plane (at disc 1). , reduce the pitch f angle, and adjust the slider to better accommodate the
(See ``A Reliable Method for Maintaining a Negative Pressure Orifice''), which facilitates thin-film devices and reduces the cost and accuracy of the massing technique. For higher reliability IJA (ft to 1N et al.), it is adapted to achieve a significantly improved [parsing 1 (1 se/W gt C).

In particular, this allows four stages of multiple transducers to be placed anywhere across the "back bar" (compared to conventional sliders). This 1 backer extends over the entire width of the 1 (NO edge of the slider)
[Extend (t L/t J3 so that there is a full back bar 1 (no less than the full width is any right hand), and then C any suitable width (depending on the required pitch angle)
(along the direction of axis A) (for example, here r
A width of LU ft mill was found to be suitable).

(Purge-1-Tunnel J 23 t: L Squig ΔIS
3 side 20, - immediately 1 of C back bar 21 along f
I was cut off by the current (forward). channel 1/channel 23 is nll
By the right, reason yfl': 5 rero, J, sea urchin, sky, 1
Terminate at 1ilL and divide the positive and 0 xylimic) force (along l1ql+8)
1ffli will be paid. The denim 23 may in some cases be cut into two legmen 3. The boot 1/flank 23 is preferably C1j-shaped in cross section, so for convenience of manufacture, for example, it may be a rectangular corner (J) in FIG. It is also a llJ shape. Well, for example)! The motion of one foot is depth d. is about 500
A rail [+! with a micro-inf-, an internal flight cavity J20-c of width Wc of 80 mils, and a width w,- of about 15 mils; 2i! 1. Tip 20-T with a slope of about 0.175 mils, length Ie, and about 20 mils.
'I' bar 20-1-1 with a length of approximately 20 mils:
I' l), length 1. , (1, , , = 93 mils) is approximately 170 mils, the height h (h-, = 25 mils) is 40 mils, and the width w (wc = 80 mils) is 110 mils. This is permitted in self-cart sliders such as those shown in Figures 4 to 6).

This slider has a width (under relatively conventional flight conditions (e.g., a disk surface velocity of approximately 1500 inches/second at mid-track, or a 4-inch to 2-inch disk band of 3600 RAM), W,)
1 with a back bar of approximately 5 mils and a purge channel 23 having a width (wp) of approximately 10 mils - QR (dl) of approximately 1 mil (see FIG. 5).
It has been found that making a "rectangular force two" is satisfactory. This provides a stable flight height of approximately 5 to 7 microinches (1e along the back bar).
I will give you a wonderful 1 self-flying (5elf -fl) that will surprise you.
[See FIGS. 7 and 8 for the operation of this embodiment.] FIG. 9) shows that such a slider 20 is Both sliders are opposite to a similar slider 30 that does not have a read/; 1;
Against p+iゞr! is assumed to fly over the disk with an attitude of Conventional (self-load) in Figure 10
The rear nook 3l-Tc of the slider 30 is visualized to allow relatively little air (squeezed by the slider flight) to escape, and the desired Preventing the necessary purge 1
The plane M' is so close to reference 1 (α) that it is easily blocked by the surface U (by the trailing edge 31 and the flight plane 30-[ [Posterior fAJ
31-1-c) will be seen.

By comparison, a similar embodiment 20 has an associated barge I/channel 23 (see FIG. 9) for purging the back bar 21 and debris (of [C1 pressure 1/l, +20-C). When blown, the air can quickly escape to the surroundings, so the slider 20 will purge itself of the debris quite easily. Note the relatively large dimension of the barge channel 23 compared to the very small depth of the barge channel 23]. -) Dasono J, Una [purging, 1
is different from other proposed air delivery configurations such as "11 slots in a row" through bar 20-F3 (and
It is sold as L. This proposed arrangement 31 is not as practical or economical as one might think.

Thus, this one complete backbar/side barge chirenel, one design is a normal [self? - 11 width 1 slider movement (to improve the properties of the 11-cm width and cross C to the air support surface (to flatten the cavity 20-c very effectively)
Then, a large air purge conduit is installed in the back bar at a plane fj), riE pressure 1 (13, and [negative pressure 1 area ti
Stand on the surface of the air beam 14 and apply a net load I (
Compare Figures 7 and 1 and Figure 33 with Figure 4)5.
The positive pressure surface (with respect to axis B in FIG. 1) is completely lateral to an angle [e.g. The result for these pressures is −C (il
E taste + n) Power is Slig support 1! ft-C relatively constant front type! Jeru. Is this a change in the air flow or ice speed? There is no effect on the 4 songs, so it is more stable. ! 13 people's spirits will be realized.

A positive load of 1 for the distribution of positive j,f along the lead rail and the "back bar" controls the [degree support stiffness] of the slider. The sum of these positive loads is “net load 1
tends to increase by 1, resulting in higher air support stiffness (C along the axis Δ@B of the slider in Fig. 3).
7 and E3 of the pressure contours plotted).

1ift Akane is '9! As the depth of the cave, C(1), increases, the flight height (1) increases and becomes less linear than C with respect to changes in load, and J, which is similar to conventional technical fields. New slider OW (normal slider >
)1':), the characteristics tend to approach the characteristics of the ta set (winchester) with no back bar), and the characteristics of the cd
It will be noticed that as rL U increases, the attraction force decreases. In this way, ωI researchers M I N cdi
Q,,+ (for example 100 microinches) J: I would like to make such a very small jcd cut! ! For simple and reliable purposes, we prefer about 300 microinches (or slightly more).

Positive pressure distributed across the backbar surface will increase the stiffness of the slider. This added stiffness tends to improve slider control and prevents undesired "roll".
For example, in the direction of the axis shown in Figure 4)
, such a positive backbar pressure ri'/E is: [pip restoring moment 1~,1], so that the pip angle is 1 for the zero-load fully hackbar slider. Plotted against the load [pip angle 1 subtracting 6° study is different from a normal slider;
Such a "Packverse 111" is relatively insensitive to changes in load 111 (at least in response to small changes in load IF, J, small CD is especially insensitive to changes in load 111). ), you might be surprised to see that disk speed
A similar degree of insensitivity was observed (from 1500 to 2500 i11S).

[Early 1st Example 1] Figure 11 shows a pipped [delta slider sl- indicated by flight profile g] flying through an air support membrane 1- through a series of acupuncture recording media M. Rather, we present here some broad features of the 1f Luxreige presented here. The slider SL is understood as follows, being tilted upwards by a positive hydrodynamic force on the forward pad PD (placed immediately behind the slope R), and elsewhere in the distal comb. 1 on Tt- and a force consisting of the rail member 1-Rl- surrounding the cavity Cv, the cavity Cv is moved relative to the medium M passing through the slider S! − as in a typical self-floating slider, and U 1(ill <.
The delta slider's width is narrowed by 9 degrees on the right side of the protrusion, and from here on, the 8 BS area gradually becomes like a monk III! I'm sure he'll get M. (The non-8BS portions of the slider are preferably but not required to follow this delta profile.) As further explained below, many desired characteristics P1
exists in this 1 delta slig 1. For example, 1. It is applied to the slider [3 points of force transfer 0fK-I J
3. Higher stability! (see discussion of Figure 13 below).

2. Delta's design provides the largest end area for mounting a read/write module (comparable to conventional sliders), while reducing overall slider mass (increased).
t, can be greatly reduced (about half of the conventional snow slider in Figure 1 or U.S. Information Technology 1 No. 3,855.625),
.

3.0h! This significant reduction in the manufacturing cost is greatly reduced, and the slider's movement (increasing the T frequency by 1, which increases the ribobandwidth associated with the head -L+p ridge) (Tado^ba,
The same rji m beam as the slider of US-1 No. 3.85 Bi No. 5.625, when V4 jΩ is applied to 1-, the fixed right-wing v1 number is 596 higher than γ ruta t) 4, 71 ruta Danke is particularly lateral stable, is very resistant to disturbances from surface roughness, and can be easily and quickly installed (
Get through them. .

5. The '7' action is zono [Pra r')! V!
It is particularly clean and even 1'self-cleaning', since the 'protrusions' are adapted to push out particles (such as dirt) into -ti.

A particularly preferred illustration of such a delta slider is shown in plan view in FIG. 12A with the delta slider 1-81-bound, with associated side view in FIG. In Figures 13A and 13B there is a schematic end view showing the transducer means mounted on the tail. .

Thus, the slider 1-8L is 1. : The tilting means 1-R is 4
jL, somewhat pointed as illustrated, terminating in a somewhat protruding portion 1-N (the sloping Loxy is a relatively conventional J3 known to the expert as one, both in structure and function). ),.

1-Pl) of the positive pressure pad 8 days S is installed directly on the slope 1-[ku; The cavity 1-CV of Ωj[ is bad 1-
1] placed in the pattern of 1], and a pair of thin rail hands r
The width is defined by Q1-Pl.

The backbar arrangement preferably makes this structure hollow 1-CV
Terminate in the pack bar slot i-1-CT immediately after the (thus adapted to "barge" the 1-CV) and attach to the back bar member B51-PB (thrower defined by chisel). The other side of the 1-CT shows the tail edge 1-[-1712] on which the transducer means is mounted (eg approximately 51111 as shown schematically in FIG. 13B). Of course, the features of the back bar/slanted cap are not always necessary for a delta slider, as research experts have acknowledged.

Slider material (any known material known in the art)
It may be made from "slig material", for example, Sumi!・
[No. 5C3-ΔG2 (by Sumitomo Company) Ceramic C, which is tail 1 in completed exemplary form
-TI- is good, 150 or more.

160 inches wide, about 120 to 130 inches tall, about 0.34mm in diameter, and empty.
l 1, - CV has a depth of, for example, 350 to 400
The rail wall 1-RL is kept thin ( λ, 005 inches).The side diver 2127M degrees (see angle 8 in Figure 108) is 20', i: 2
It would be on the order of 2".

r F, 'i result 1 The research name is 1-8 [how the slider is clean, jagged, stable and effectively in working condition 1!
7. You'll be surprised at how much you do. For example, Figure 15 shows the forward sector 1sl 12-A and about 27 ('71.:] I: / f TE M'6 row 'l' LE flying at about 14 micro-inves in a stable state at all times. 12-T (7)
A photo of the delta slider flying on the glass I isk L with the n area to the right (1) (photographed from below the disk).

One reason for the great stability and particularly strong roll resistance [,1, illustrated in connection with FIG. 148, '+-
111j for slider air support like s l-
;Lj-like pressure transfer 9(-12 is shown in the analysis defined by Fig.
, the positive pressure exerted on the slider away from the medium is mainly due to
B j'; and the rail IRI on the side of cavity 1-CV
It will be understood that this "leaf bud) ΔBS pressure 11
91 is the smaller peak PK and 1) determined by C↑ by the additional 4I function.
It will be shown by presenting ′ in . These i [pressures are 1 by biasing C1 of cavity 1-CV in the opposite direction].
I want you to resist me! will be FR (Gt'
/R-7[:] t= te(7)-rempty 1i+l J
<1', j;, jjQ).

[Table 13] Is this delta slider (A B S > No. 2)?
The current characteristics are: 1. Clean properly tilted flying posture (9! 4! Body 1-'c+'+Fi H< is higher than 1 killing green)
A triangle with 1・r) added? J, that is, [1 Luther-1 type ("Front surface of P plane'c") adds 121 constant self-cleaning phase L) to this design.:t't 3f!l (Head -) on either side of the tI7rO slig of any dust - on the chair
- Heading J: ・It's great.

2. The stable slider is subjected to three main pressures r,',i (see discussion/! in Fig. 11 of L) as it flies through the medium, and the result is C-slider stability, especially in the lateral direction (relative to roll)
41 Continuous improvements will be made.

Thus, as opposed to the conventional "square-profile" slider (slider 20 in Figure 1), the fact-L "wobble" tendency is completely eliminated; When the rail 8BS 1-RL is not exactly on the IL-plane as (t!!7'i), the associated fore-and-aft sway in the roll direction during flight will reduce the lateral stability by 1ζ.
. The rapid reduction of the rail eight BS area helps to promote this stability as well. .

2Δ, self) 8 positive The pitch attitude of the delta slider like A is the pitch attitude of the delta slider to the t-edge with respect to that of BS (1-TE).
The strength of the leading pad 1, - PD is a possibly significant factor in determining the applied air support pressure (here t
The pressure peaks near the end of the slider should be relatively equal (assuming a bit of about 80 to 90 microradians) as long as the air bearing surface adjacent to the U1n edge is sufficiently flat. Figure 12 shows Tori PK and 1] K)
, this balance of forces is the result of a passing disk.
In the T' row, it will be about 1 to maintain the air support surface ABS.

Furthermore, the act of moving the rubber arm 1 next to the point where the pad 1-P f) of i'tifi is reduced (1') will neatly reduce the tendency of the mouth-ru.The pressure of this preceding pad The peak is placed in the center of the slider's center line.
Tsurou 1. If the surface of the leading pad 1-PL is Y4, then the leading pad 1-1]D is a slider, and what is the tendency to apply the roll force to L? This is a large force F on the leading pad, but on the pad, ?
l is aimed at the center of the slider,
It is shown in FIG. Since there is only one force applied to this pad, there is no difference in the orientation of the pad with respect to the disk (apart from the spatial range of the force).
) and) are outrageous. However, the rear pad has a relatively uniform 4L support across the entire slider width, which thus tends to keep its Δ13S parallel to the disk surface.

Roll the slider 1! Since the leading pad moment i'-m which tends to move is very small, the total roll force is always reduced to a non-volatile degree and is not relatively wide enough to (
Even when the slider is confused, it will tend to return to the 1-non-roll 1-V behavior "ζ!ltI,5j" (1 self-correcting characteristic).

2B, Force at the edge of balance Researchers (,
LIf this delta △1゛3S travels very close to the 'CZ curve across the disk (or flat) surface of the pond, then
One wish r 1. ``JI Ki'' is generally a notch (Wed(1) between the slider pitched up and the passing record.
ing) Jyo・ノ('=A to be ejected from the air escaping capture by its sides 1!I!
Fi! Do C Aro). Such "exhaust" tilts the slider ABS gradually to one side (unnatural roll), and confuses stability. Delta slider 8BS against such j juice induced rolls and related instability! It has been reduced in intensity. Also,
Simple <Zr<to the wedge-shaped j The shape of BS is determined by the researcher to the J,
;) l:i: Make it easier to ensure the magnitude of the lateral force.

In addition, 1γ Luk △RS J is more stable than low transport speed ]σ ( /,: For example, low rpa + 'c3 1/
The late microphone Ll on a 2-inch disk or 51!4-inch disk (see above on a spackled recording surface) 3. The swift delta slider is an interesting additional feature. There is a C to the right of 1, which means the imperfections of the medium (surface roughness) is 9'F, its J,
)＜'y 'A＜ Dodge the discontinuity ma b(')1
When J is slightly smaller than C, η is 0 < (this is also somewhat). Similarly to the protrusion, from the 11-force contact of those three points, then - C is forward in the lateral direction. Kusuna resulting from a decrease in the Δ1-38 area F) 1. 'r, r ifi decrease' or 'bump 1) (alternative q) structure] delta △B , each is appropriate IJJ, then lj
I:shishi・me) may be in the form (for example, the second
0 figure 0')! , La41 II 'E! Kl),
, same 11 f: , back par 7, 'slot 1--characteristic onibi 7/or if slope is not required L1, these are eliminated (delta slider ■ moves slope and back bar/thrower 1). A relatively blunt protrusion;
1, J (see also Figure 20, which is similar to slider 1 in Figure 11 except that
The symmetry of S (Ax-△, in Fig. 20) is generally the desired C, but it may not be so in some (Li combinations, for example, j) at fI'1 degrees, Even if the curvature is oriented toward the ABS side to negate lateral forces such as uneven [°↑Jl qi] or similar lateral forces. In this way, the second
In Figure 1, the full11 plane of 1/j is approximately 24° (aa')
"C" f, (7) Deviation from the center @ A x-A (
△BS1. ),
On the other hand, the other shows an alta Δl'3 S like ■ in Fig. 20, except that it deviates by about 24° (bb6>).Similarly, the magnitude and orientation of the 1-bit rail on the side of the cavity CV /Early [May be dismissed.:L, normally such things have to be biased downwards for the correct load, but this delta Al3S can also be adapted to the J1 self-type slider. u1 near (if the hollow CV is forward sex' the hepatic 1 stop wall is opened [see if the raft or removed]) The sliders discussed (such as the 1-3L) are also of interest to 5-year-olds.”
I'r"a 1!! Presents a sign. For example, 411!
7y 1.2 When using the molded slider manufacturing method, is there almost no significant increase in manufacturing time or cost?1. or all <N <, approximately double the yield from a given workpiece. [This is a very deep and meaningful book that even those who are experts in the field can read]
(“There is. This is somewhat schematic (this +
++ is shown, the current is first formed here, and then cut or edited ( t, 11 rL (dice [211 rubbed)), the work of a single multiple slider. piece 1
5-P (See FIGS. 17G to 19) It will be seen that C is formed by the normal processing steps at 1-1. Compared to when sliders St (e.g. rectangular) are conventionally formed from 15-P, the 'j' silk configuration facilitates nearly doubling the yield for forming e.g. sliders S L-, etc. In other words, the second
The sliders S L = to the same filler 1 are similarly formed in the gap between the initial sliders SL, but these second sliders 81' are oriented in the opposite direction. The BS to their air bearing surfaces are therefore on the opposite side of this plan view.

According to known technology, such a workpiece 1 5-
P may be earlamped at both ends C, and each sligre!・The array of transducers is suitable for
'I C is formed〈zanararasura ('JS1- is lower q)・': A: i'7, 115 ~ ': 8 mo and the second
0) the opposite edge of the transducer of the sliderlet St').

- Norkbys 15-P is assigned to these Q Nn L.
containing a 3-inch thick wafer with a thin film head to be processed; 1', the time between Tα processing 1 and 1 is reduced by approximately half.

Both sides of the blade are thus 'masked', are usually produced (to resist removal), cleaned, sanded, tempered, etc., but these are at the same stage. (And you can do it (to the same ++.'r) on both sides of the 1 C" - row, put one. Next, the two sliderlets S! To] 1 '" are in the completed form. cut out,
Actually, with the same processing time, the lower question is the same as 1. If u is less than 1J, the number of sliders is 2 (1'? produces 1.

Researcher [；艮This 1ji characteristic of ``Delta Slider'', f
Create the associated transducers on both sides of the slider, and together form the two phases of the slider (15 incl. 1 per person).

What about Automatic Rail Machine Finishing 21 or Inner L-tubing? It is used to conveniently determine the temperature of the bronchus fi (' t + J2.

The preceding Δ13 S pad and the 49 fj's BS pad are all C, and the instep is the same as the instep. 9 things to do
T! J%1. In terms of I, it is the same that I go to because I discover it.
), which requires the l'plane; 4b in Figure 31;
3-point pressure ring (H) *Another advantage of IS is 1. Imperfections in the leading pad may not be significant in affecting the attitude or stability of the delta slider, and the three-point pressure profile is more tolerant of changes in the slider. be.

Special mounting and equipping with 1~ranshufu 7 tools (which will be 51 light on top of 1.Also, precise alignment of 1 line of 1 zero throat on both sides of lip 1 helley I~) It may not be feasible to attempt to
Thus, even if the 'j-rows are placed as close as possible to the fibers +, 1L, they will be 180 degrees from those on the front side.
It may be possible to orient the mask on the '12 side' of the workpiece at '.
Since the cut surfaces are machined to form the BS pad, it is necessary to have access to both cut surfaces of the workpiece. After the slider is cut off from the workpiece, each slider has a negative force cavity 1-C
A mark can be placed on each bar using it as a serving standard.

Figure 17 shows 1. FIG. 10) shows a side view of the hobbed workpiece 15-P and bottom clamped, while FIG. :, for example 1, with a tail spacing 1G-8 of about 12 mils, contour each of the sliders at about 315±100 microinbs (steps 1-, -1
(see ).In terms of laser nip, 'U t
J, J: Yes. Also, back barb t/nel (stage 1--
9. For example, a laser at a depth of about 4 mils (See 2) is also good. In the center of the sky 11in1-CV (see steps 171--3) [about 350 to a depth of 50 microinches (may be 1 block 51, thus summarizing ω] Investigation is here) New ↓l's [Delta Slider J
f3 and Il! It will be appreciated that a series of unique manufacturing techniques have been described and that these include many of the surprising features and advantages described above.

For example, a low quality drive of 1 f lux is suitable for use in some states of the art disk drive: L-nit. The slider is C1 in some cases
``WatrOIIS Flexible Load Beam'' or similar flexible spring comb 1 collar, even when mounted on a conventional support mechanism.
:stomach. Such a light slider exhibits less motion quasi,
It is faster than C, and allows you to more easily cut small knots on the disc's inlet surface without causing instability.

The reduced l mass h1 also increases the natural frequency of the slider Q;
It may form an air branch 1,1 member with a diameter of Φ), and may be suitable for realizing a wide range of C (e.g. 3° 5 in f).
If you change the speed of the head disc (for example from 500 to 2500 ips), then change the speed of the head disc (for example from 500 to 2500 ips),
ta11\tsudo even is also used. .

If a backbar is used, it aids in the placement of multiple rounds of read/913 transducers on top of the device.

A "3 point" medium contact of 1 jr provides greater stability and reduces roll orientation.

PL K7 The particles of the father are easily blocked from the path of the slider by the slider J3 and its sharp protrusions 1 and 2, and are deflected to the side.
(The sharp protrusion should slice through the air with less damage and vibrations.)

Manufacturing! The second advantage is that the sliders and associated thin film heads are in place.
The head is made (on both sides), reducing the cost and processing steps of the head (for example, the head is 1l).
11 lengths are electroplated at the i- stage.
jj bere C sata. .

) When creating U1 in the example of a bobbed slider (150
ξ 3 inb, 7 sec γ CC degree C1 positive air - 15 mils wide, and 500 mic U inbu negative air)
J":?', 1iil), Fig. 11 (j Ishi No. 6
Look into the picture r f! The escape passage 23 of 10 X /I mil in the Ji plane (55 to 7 micro-imbu flight 1!":II!J 7:) in the Iζ of the back bar increases the stiffness of the support 1.1 (e.g. approx. 10%), [beep] - while reducing the angle 1 (by 90 microradians from the 130 mic L1 sysph), it is more sharp 11
11 II, I'; J: Gave fewer "rolls".

The preferred embodiments described herein are by way of illustration only, and the present invention is subject to modifications and variations in structure, layout and use without departing from the spirit of the invention. will be understood.

Tσ1 research name is J, ``Delta 8 B S 1fi characteristics tend to be used with negative pressure sliders (like backbars) that fly less than 10 microinches''. r-1.Research names may also be used when appropriate (e.g. and back bar 7').
Purge Busenel) in low flight, positive pressure manogo t;t O
The pressure (Winchesque) slider may be used instead.

Still other modifications of this invention are also possible.

For example, the means and methods presented herein are also applicable to Delta 8 BS flying other recording surfaces. 1 The present invention also provides low [f recording and/or
Or related to other forms of playback system C11: Definite flight △
It can be applied to record BS.

The specific examples of L of possible variations of this invention are merely illustrative. 1, but-) C1 This invention is the above-mentioned 1! If the scope defined by the claims falls within the scope of the claim,
It should be thought of as ``including the ``bede no i1r'' and ``forms'';

[Brief explanation of drawings]

Figure 1 shows the prior art's self 6 η ([modified tsu・Csibu 1 schoo 1) ■; A similar known slider is shown schematically in FIGS. 4 and 12, while FIG. FIG. 71 shows a similar self-loading slider in plan view, side and end views of which are shown in FIGS. 5 and 6, respectively, and in FIGS.
h contours are given, and these are the idealized pressures (t) on each axis of this slider! IQ (n1
It is 5. FIG. 9 schematically shows the operating position (side view) of an embodiment like C, while FIG. 10 shows the same without the back bar. FIG. 11 is a highly schematic generalized view (plan and side view) of a delta slider with a back bar. 12-A is an enlarged plan view of the same slider 2, a side view thereof is shown in FIG. 12-B, an associated plan view is shown in FIG. 13-A, and FIG. Figure 14-B shows an end view thereof;
l over several parts that were done! [Shows the pressure contour that has changed.] Figure 155 reproduces a photograph of a (transparent) delta slider in flight. Figure 16 shows the orientation of the pressure pads on the lux slig.
1 I think about it. FIG. 17 shows the slider workpiece in side view C;
This is shown in Figures 18 and 19 by J! I! Illustrated in a conceptualized cutaway plan view. Figures 20J3 and 21 respectively show a straightened delta slider in a highly schematic plan view. J7 is shown in the figure, and 20 is [self-loading type 1 slig appin].
), 21 is a complete back bar, 22 is a slope, 23 is a barge-less (l channel, 24 is a coid rail, 261 is a cross rail, 30 is a slider, 30' is a hollow, 110 t
JI rectangular block L'', 112 and 114t rails, 116 interlocking rails, 118 J3 and 120 arbored seat 1, 119 recessed step, 1
22 is a magnetic transducer grip, 12.1 is ('J pressure zone, 1
26 and 12E3 are recesses, 13/lJ3 and 136 are protruding ir-11 areas, 142 and 144 are l
There is an upper pressure area C. ((2 people) - 2. Mountain 4- FIG, 3゜FIG, 9゜ljj ALl FIG, 4゜violent FIG, 15゜procedural correction month (method) % formula % j゛luk + v frado slider and How to make it 3.Relationship with N (0 positive)
Clara T. Nan Thomas at Central Expressway (no street address) Name: Melex Corbolesi 31 Assignment and Bobetsu] To Jones/12 Agent 11 Address: 1-1, 2-108 Hirano-cho, Higashi-ku, Osaka City Hiranomachi Yachiyo Building Telephone Osaka (06) 222-0381 (
6. Column 7 of the brief description of the drawings in the specification subject to amendment, line 9 on page 56 to line 1 on page 58 of the specification of contents of the amendment will be deleted, and the following text will be inserted. FIG. 1 shows a prior art self-loading ("modified Winchester") type slider in a schematic perspective view. FIG. 2 shows a similar known slider in a schematic perspective view. FIG. 3 shows the ABS pressure profile of the slider of FIG. FIG. 4 shows a similar self-loading slider in plan view. 5 and 6 show side and end views of the slider of FIG. 4. FIG. 7 and 8 show different pressure profiles of the slider of FIG. 4, which are idealized pressure profiles along the respective axes of this slider. FIG. 9 schematically shows the operating position (side view) of such an embodiment. FIG. 10 schematically shows the operating position (side view) of such an embodiment without a backbar. FIG. 11 is a highly schematic generalized view (plan and side) of a delta slider with a backbar. Figure 12-A is an enlarged plan view of a similar slider. Figure 12-B shows a side view of the slider of Figure 12-A. Figure 13-A shows a related plan view. Figure 13-B shows an end view of Figure 13-A. Figure 14-A shows an idealized pressure profile over several portions of the plot. Figure 14-B shows a similar top view. FIG. 15 reproduces a photograph of a delta slider flying over a (transparent) disk. FIG. 16 ideally relates to the orientation of the pressure pads on the delta slider. FIG. 17 shows a multi-slider workpiece in side view. 18 and 19 show idealized cutaway top views of the workpiece of FIG. 17. 20 and 21 respectively very schematically show a modified delta slider in top view. that's all

Claims (29)

[Claims] (1) A "delta slider" for flying a magnetic head over a fluid support in conjunction with a magnetic recording medium moving in a predetermined direction of the fluid, comprising: a leading edge for flying over the moving medium; a slider body having means for defining a wedge-shaped fluid-supporting surface having an edge, the fluid-supporting surface-defining means comprising: a wedge-shaped fluid-supporting surface extending generally transversely in a predetermined direction of movement of said media; A delta slider comprising a areal fluid support surface, the area of which increases continuously from a minimum at the leading edge to a maximum at the trailing edge. 2. The combination of claim 1, wherein at least a portion of the leading edge of the slider defines a slope angularly spaced from the fluid support surface and the plane of the media. (3) a slider also characterized by a cavity formed within the fluid support surface and spaced from the leading edge while positioned adjacent to the trailing edge of the slider;
The cavity thereby moves to create an area of controlled vacuum on the fluid support surface as the slider is flying over the moving medium to urge the slider closer to the medium. The combination according to claim 2. (4) A combination according to claim 1, wherein one or several transducer elements are mounted on or adjacent the trailing edge. (5) a support structure having a wedge-shaped air support surface, a longitudinal axis along the surface, and leading and edge edges; a side rail disposed along a side edge of the air support surface; a cavity disposed between the side rails; said air support surface increasing progressively from a minimum at a leading edge to a maximum at a trailing edge; and transducer means disposed along said trailing edge. , an air-supported head slider for supporting the transducer element. (6) said side rails and cross rails define a first relatively deep recessed section disposed relative to a trailing edge portion adjacent one side of said cross rail; 6. An air-supported head slider as claimed in claim 5, wherein the section of is closed on three sides by the rail. 7. The combination of claim 5, wherein a backbar slot is provided adjacent the trailing edge. (8) a "delta slider" for flying a magnetic transducer means over a fluid support with respect to a magnetic recording medium moving in a predetermined direction with a fluid, comprising: a leading edge for flying over the moving medium; a slider body having means for defining a wedge-shaped fluid support surface having a trailing edge, the means for defining the fluid support surface: extending generally transversely to a predetermined direction of movement of said media; a generally planar fluid support surface having a minimum area at a leading edge and increasing gradually to a maximum area adjacent a trailing edge; an angled fluid support surface away from the plane of the media; a portion of the slider leading edge defining a slope, the transducer means being mounted on the trailing edge. (9) a fluid support surface is also formed with said fluid support surface and spaced apart from said leading edge and providing a controlled vacuum zone on the fluid support surface as the slider flies over the moving medium; 9. A combination according to claim 8, characterized by cavity means adapted to create. 10. A slider according to claim 9, wherein the cavity means has an opening to the trailing edge of the slider, whereby fluid within the cavity may be evacuated through the opening in the trailing edge. . (11) The cavity is terminated by backbar means disposed over the rear face of the slider, the backbar means including purge channel means in fluid communication between the cavity and the surrounding atmosphere, thereby allowing gas and 10. The slider of claim 9, wherein a plurality of read/write transducer means are mounted along a backbar means to better purge the cavity of associated contaminants. (12) the back bar means includes a bar member extending substantially across the width of the slider with a cavity exit zone perpendicular to the direction of flight, and the purge channel means includes a predetermined shallow groove between the bar member and the cavity exit zone; 12. A combination as claimed in claim 11, including a groove leading to a side surface of the slider and extending relatively transversely to the direction of flight. (13) The combination according to claim 12, wherein the slider is of the "self-loading" type. (14) moving in a predetermined “direction of flight” within the fluid;
A magnetic recording head-slider assembly for flying a magnetic transducer means over a fluid support with respect to a medium storing information, the magnetic recording head-slider assembly having a leading edge and a trailing edge adapted to fly over the moving medium. a support body including means for defining a fluid-supporting surface, the fluid-supporting surface increasing from a minimum at a leading edge to a maximum at a trailing edge, and wherein the fluid-supporting surface increases in a predetermined direction of movement of the medium. a plurality of spaced parallel planar fluid support rails extending in the same direction as; a fluid support rail extending laterally in a predetermined direction of movement of said media and adjacent the trailing edge; a flat fluid support surface extending between and substantially planar thereto; further extending from the flat fluid support surface and between the spaced apart fluid support rails; having a preselected angle of inclination to form a wedge-shaped chamber having an opening located between the leading edge of the rail and the magnetic transducer means mounted on or adjacent the trailing edge; An assembly having an inclined surface. (15) at least one purge channel means between the sloped surface and the support surface and adapted to direct the flow of air across the "direction of flight," thereby quickly and cleanly purging the flow over the sloped surface; It has magnetic transducer means mounted at the trailing edge of said body and positioned with each transducer gap on and in alignment with said flat fluid-bearing surface, said sloping surface extending into said wedge-shaped chamber. receives fluid at the open end of the
and act to direct it towards a flat fluid support surface and generate a lifting force thereon, which causes said support body to be positioned between spaced parallel fluid support rails adjacent said moving medium. 2. A flat fluid support surface extending between said spaced apart parallel fluid support rails. The combination described in item 14. (16) said channel means defining a fluid open bypass hole adjacent the trailing edge of the body, the thickness of the fluid support formed between the body and the moving medium and the flight of the slider with respect to the moving medium; 16. The slider of claim 15, having a diameter selected to essentially purge all fluid from the wedge-shaped chamber for altitude control. (17) having a wedge-shaped bottom slider surface with leading and trailing edges, and which is adapted to rest on a thin fluid film at a predetermined distance in the direction of flight over the moving medium; a ceramic member, said bottom slider surface defining first and second substantially planar fluid support rail surfaces extending along an edge of the member in spaced alignment; and a third flat fluid support surface positioned between and offset from the first and second fluid support rail surfaces, wherein the bottom slider surface extends to a third flat fluid support surface positioned between and offset from the first and second fluid support rail surfaces. to form a wedge-shaped chamber having an opening extending from the fluid support surface and located between the leading edges of the fluid support rails and an "outlet end" located near said flat fluid support surface; including means for defining an inclined surface having a predetermined angular inclination; including a plurality of magnetic transducers, each having a gap width of a preselected dimension, between which a predetermined uniform spaced apart, the magnetic transducers are mounted to the trailing edge of the ceramic member at a third fluid support surface, and each is positioned with a gap adjacent and aligned with the third fluid support surface. ; the bottom slider surface and the magnetic transducer are connected to the first and second
and a third support surface, acting identically with the moving medium to enable it to be supported on a fluid film formed between said inclined surface and the surface of the moving medium. the plurality of magnetic transducers and the ceramic member; further comprising purge channel means between the outlet of the sloped surface and a third support surface, the channel means extending from the sloped surface across the direction of flight. the sloping surface is adapted to purge and direct fluid flow; the sloping surface receives fluid at the open end of the wedge-shaped chamber and directs it toward a flat fluid support surface and applies a lifting force thereon; positioning the plurality of transducers at a predetermined distance on the surface of the medium equal to the thickness of the fluid film and forming a plurality of tracks thereon across the moving medium; positioning the transducers, the width of each track is substantially equal to a preselected gap width of each magnetic transducer, and the spacing of each track is substantially equal to a predetermined spacing between each magnetic transducer; , a multi-channel "delta-type" magnetic transducer slider assembly. (18) A delta-type magnetic recording slider having a predetermined shallow "flight cavity" on its surface facing the medium,
This cavity is terminated by a back bar disposed across the trailing edge of the slider face and adapted to present on the full width trailing edge for mounting any number of transducer means; The means includes purge channel means in fluid communication between the cavity and the surrounding atmosphere, thereby better purging the cavity of gases and associated contaminants;
The area of this surface increases from a minimum at the leading portion of the slider to a maximum at the trailing edge; a plurality of thin film read/write transducer means are so arranged along the backbar means that the backbar surface terminating at the trailing edge, the slider is wide enough to reduce the pitch angle to a predetermined value, inhibit roll, and increase the stiffness of the slider by a predetermined amount. (19) the back bar means includes a bar member extending completely across the exit zone of the cavity and the width of the slider and dimensioned perpendicular to the direction of flight; the cavity is flanked by slider rails; 19. A combination as claimed in claim 18, wherein the vessel means includes a membrane head fabricated on a bar member. (20) A method for making a "delta slider" means for flying a magnetic head on a fluid support with respect to a magnetic recording medium moving in a predetermined direction in a fluid, the slider means: a slider body having means for defining a wedge-shaped support surface having leading and trailing edges for flight over a moving medium, the fluid support surface defining means comprising: a generally wedge-shaped planar fluid support surface; FSS, the method includes: providing a rectangular bar of slider material, the bar having a pair of elongated planar parallel "tops" and " a "bottom"surface; forming a row of identical relatively adjacent triangular slider segments, including commonly forming an air support surface and associated cavities and other elements; are alternately opposed along the rows and arranged in parallel; and further comprising cutting the slider so formed from the bar. (21) before the same array of thin film transducers is cut;
21. The combination of claim 20, which is commonly formed along each slider base. (22) Sliders are defined and their elements are commonly formed such that they are juxtaposed in an alternating face-up/bottom-up relationship, with adjacent sliders being flipped upside down and with their faces reversed. 22. The set of claim 21, wherein each even numbered slider ABS surface faces onto one bar surface, while each odd numbered slider ABS surface faces onto the opposite bar surface. Match. (23) A row of self-loading delta sliders is commonly formed in each ABS containing a negative pressure cavity.
The combination described in Section 2. (24) Claim 23, wherein the ABS cavity and the convergent side of each slider are defined by laser means.
Combinations listed in section. (25) A method for commonly manufacturing a large number of identical magnetic recording delta sliders, comprising: a pair of parallel longitudinal edges;
providing an elongated bar of slider material having a pair of parallel longitudinal opposed top and bottom surfaces; adjacent sliders being defined in an inverted top-down relationship such that at least one of the faces of the at least one bar has at least one defining said sliders in a row, such that a first slider presents a trailing edge along an edge of a first bar, and an adjacent slider presents a trailing edge along an edge of an opposite bar, and so on. placing an identical set of thin film transducers along the edge of each bar, one set along the trailing edge of each slider; and slider elements common on the bar. and further cutting the so-formed slider. 26. The combination of claim 25, wherein each slider row is arranged so as to present adjacent slider air bearing surfaces (ABS) on opposite bar faces. (27) A combination according to claim 26, wherein the sliders are so defined and are commonly separated by laser cutting means. 28. The combination of claim 27, wherein a similar negative pressure cavity is formed on each slider ABS, thus creating a self-loading slider. (29) The combination of claim 28, wherein thin film transducers are produced along both slider faces.