JPS5990212A - Head for vertical magnetization - Google Patents

Abstract

PURPOSE:To prevent a rotating magnetic disk from flopping and to perform stable high-precision and high-density recording by providing a main magnetic pole support with a convex curved surface and an auxiliary magnetic pole with a concave curved surface facing the convex curved surface, and arranging a non- magnetic pole in the opposition space formed of both curved surfaces. CONSTITUTION:A thin film 23 with high magnetic permeability is sandwiched between nonmagnetic supports 24 to constitute the main magnetic pole 25; and the supports 24 have the front flat part 28 and rear flat part 29 of the main magnetic pole nearly parallel to the rotating magnetic disk 21 and the front end part 30 of the main magnetic pole is formed into a convex curved surface connecting with both flat parts. The auxiliary magnetic pole 26, on the other hand, is made of material with high magnetic permeability; and the concave curved surface 31 of the auxiliary magnetic pole formed facing the convex curved surface of the front end part 30 of the main magnetic pole and the front and rear flat parts 32 and 33 of the auxiliary magnetic pole are arranged oppositely in parallel to the front and rear flat parts 28 and 29 to form the space where both curved surface face each other.

Description

[Detailed Description of the Invention] The present invention relates to a Ci-step direct magnetization head, in particular jjJ' 4f, Q number of rotations (I bullish disk's female fixed rotation 11m state is 'amazing'';+'-L , Ip: target (related to the head for output) that can be used to record information with commercial accuracy.

In recent years, 11? LJB change in the direction you are looking! In the olden days, the commercial order number 1-P number 1 sen was added.
yt+: lI'J-a (to) conversion note lR method is 7L 1, this 4. i! i II “I-4y7 Kaki V.
A method Qc force 9 spelling i, ★・11" There is a dyke of the gods as a 5rS Qi head for cattle, +, u++; l'1, (
ItImJ ++'a +j14 I)JJ rib
It is known that the type head is excellent and has a good raw calculation rate.

That is, the head is shown in Fig. 1 as shown in Fig. 1.
/ , 2 based on 111 t one commercial work success) p ≧ / 3 is 7ii 5) 3 Teiho 1, θ1 ((J'j, / hiro and the earth (l ++ name / j 4?1 movement in the front axis f part of the record 11.1.・Body// through the main body/j, the electric furnace 2 dragon + 4 N material ↑ + i + support value iyu/ l zu・Y
The same device was used.

Its operating principle is excited by supplying a signal +-L current to the winding 77 wound on the auxiliary S4/6 (114). / Struggle-C
King output 1ha/! By moving the IJ eastward to the quotient m + it + γQJ
There are 11 self-records in the IRR News L4' issue, 9 times a month. It's a trench, it's recorded on the recording medium // tL, l this 1+1 bulletin number 1-4
'For the occasion of performing J student, recording medium im//11 Yumiko Ayumu 11
The magnetic flux from the residual value converted to 100 and 66 converts the main insulating pole/evening commercial thin film/3 into a value, and its Shaoto is led to the auxiliary magnetic pole/l winding/7. , by raising Ichikawa 11 bamboos between the ends f of the winding 17? It is something that will be destroyed.

Here, when recording and 1" 1 recording using such an auxiliary pole excitation 6G type head, the distance between the main magnetic pole and the recording medium, that is, the so-called separation length is determined by the recording and raw characteristics. It is known to have a hot effect on

That is, during 4Il production, if the distance between the recording medium and the main magnetic pole, that is, the separation length, is d, and the recording wavelength is λ, the loss due to this + it is proportional to d/λ (2 mm. Sometimes there is a gap between the recording medium and the main magnetic pole.
; or ml (so the magnetic field from the main pole 4a is 1
j will lose its sharpness. Therefore, when recording and reproducing data using such a vertical 4A FI head, it is important to keep the separation length small and to keep this separation length constant.

Using this auxiliary magnetic pole excitation type head, one attempts to record on a flexible disk-shaped magnetic disk that rotates in a 11 (J) sequence, or to reproduce information signals recorded on the disk. Then, the following drawback γ arises. Namely, in this method, when the magnetic disk is rotated electrically, data is recorded on the magnetic disk by sliding the tip of the magnetic disk. Ta1
♂4 The information is played back, but although the rut disk rotates stably due to the centrifugal force caused by rotation,
aJ Due to its flexibility and slippage, for example, even if the tip of the head touches the disk, it will cause significant flapping, making stable rotation impossible, resulting in highly reliable and stable recording 4') ':t f This makes it impossible to maintain a stable sliding condition between the magnetic disk and the main pole. By the way, the gap between the main pole and the auxiliary magnetic pole is 00 μm, and the magnetic disk can be stably rotated within this gap and the required number of times is q.
Conventionally, it has been difficult to maintain a constant and stable sliding condition between the 1g disk and the main pole.

Here, the direction parallel to the thickness direction of the recording medium (longitudinal strength)
An office lady who records information No. 11 using the magnetization state of
In the device μ based on the so-called IJR method in the US,
A radical holding mechanism is installed to maintain the Jd excitation state between the recording medium and the magnetic head.
Auxiliary magnetic pole excitation (in the ox type 2J paulownia μ+ segmented recording head,
Due to its basic structure, the main magnetic pole and auxiliary magnetic pole are arranged directly in line with the surface curvature of the recording medium, making it difficult to install a holding mechanism such as a pad. Even if a holding mechanism such as a pad is provided in a suitable manner, a considerable amount of pressure must be applied to suppress the flapping, and the recording medium is a flexure and thin sheet. Because of this, this technology has the disadvantage of being easily damaged and stained by this pressure.
It is not possible to use -i:i1+'n.

The present invention has been developed in order to solve the above-mentioned problems in i1+/C.
In the J production equipment, we used a perpendicular magnetization head that has an extremely stable (111!ILIJ) state between the flexible straight Nysk and the main shielding pole and can easily create the trade state required for 4H. In other words, the purpose of Akira Motomoto is to provide a flexible 14F (direct melting head) that stably rotates a magnetic disk; Thirdly, we provide a V-shaped magnetization head that maintains a stable sliding state with the flexible magnetic disk, and third, we provide a straight magnetization head that does not damage or stain the flexible magnetic disk. Firstly, the present invention provides a magnetic disk for traveling magnetization in which a main magnetic pole and an auxiliary magnetic pole are provided with a structure for stably rotating a magnetic disk.

That is, the present invention provides an auxiliary magnetic pole 'IJib 4 shark type' in which a main pole and an auxiliary magnetic pole are arranged opposite to each other with a recording medium in between. (It is a head for vertical 1 [゛1 grinding, characterized by having a structure in which the surface facing the magnetic pole is designed to stabilize the +'lj IIJJ of the recording medium. Auxiliary magnetic pole excitation shield tl, 'J t% 1
(In the old J head, a convex curve...]) and a concave curved surface on the nucleus (1f (convex and concave curve of the pole support) ] The main feature is that the support (+E+ pole) is placed in the opposite concave circle formed by the convex curve of the support of the main 11 poles and the concave curve of the support pole. Offshore: i
There is a head for n, fmm output.

Is it uninvented? Based on the r-th diagram, I will explain it in a historical manner.

Commercial permeability-! i IIIΔ! 3 is sandwiched between the non-transparent support λμ and consists of 18 ladders on the top, 2 and 71, and the non-transparent Q support, 2 II IrJ, 'c front and rear,'
J13 has a rotating A drowsiness disk 2/ and approximately 317 lines on the top (Naripolar ii J part flat part 2 ♂ and also a rotating A bald disk 2/ and a main magnetic pole tip part Hirakawa part, which is completely parallel to the bald part, 2 Grape I j L , and the main pole tip end 3 is formed into a convex and concave curve with respect to both flat parts, and is simply transparent so that the corner of the convex and concave curve is near the main pole tip. Infertility y', 1) j1 site 3 is arranged. Auxiliary magnet 2 O is l>'jl boi sickle case IJv, ') s main (convex shape of septum tip 3o The auxiliary magnetic pole concave curved surface 3/ is formed at the end 1111 opposite to the protrusion 1, and the main (small uneven front flat part 2)
The auxiliary bee is set so that it becomes a skewer on the main part, I, I, 18 flat B4S2F! At the end of Otsu, the auxiliary magnetic pole formed in the river ``11J part flat?
j↓: The auxiliary magnetic pole 2A is skewered to 11S2.
It has a rear flat part 33, an auxiliary Iki axis concave curve 1 river 3/, an auxiliary mo μ Yanagito flat J81S3.2, and a Tsukudasuke magnetic pole rear middle Utato 33. 2, and the convex and concave curves of the main pole tip 30 and the auxiliary +
Company+l! Is the distance between l+ and the concave curved surface 3/ the earth imitation pole n old?
11 Flat part 2 gap and auxiliary magnetic fence i J part flat part 32 and main magnetic fence rear flat part λ and auxiliary A camphor part flat part 3
3, that is, the two curved surfaces have “
The main magnetic pole tip (part 3θ) has a convex concave curve and the auxiliary magnetic pole concave opening 3/ is formed so that the shape is IJZ.Auxiliary magnetic pole 2
A recording/reproducing coil 27 is wound around the coil 27.

When recording and reproducing a vertical (iH) head of the present invention on a 0J→φ type hard disk, the flexible magnetic disk 2/ has the main magnetic pole 25 and the auxiliary magnetic pole 2 It rotates in space at high speed.In the case of bending, as the rotating magnetic disk rotates at high speed, the rotating magnetic disk and the main magnetic pole 2
A stable and constant laminar flow is formed between the rotary magnetic disk and the auxiliary shielding pole 2t. The rotating magnetic disk d rotates stably without flapping due to these stable molding layers. Moreover, the flow velocity of the mold 1 formed between the magnetic Nysk 2/ and the auxiliary 4iR pole λt suddenly increases at the concave curved part of the Yuzusuke magnetic λλt.
' r 1 rotation low ice cube 2/ and upper 4 pressure (+i m 2j formed between /ζνg air layer bIL 2 and t1 pressure & (
Rotate quickly (the disk is bent I 4d
4・iJ (Receives pressure r on the side, and transforms the curved surface into a straight shape IJ (7) Rotates.

This state does not change even if the magnetic head of the present invention is activated at the same time as the drowsy disk.
Stable rotation of arrogance & 1 load.

By using the vertical lowering spatula 1゛wo/Jti of the present invention, the rotating 4fi disk has no fluttering and the sliding condition is good. '↑IPL's quotient 1'? The record was severely damaged.

It is clear from the above that the present invention V'llJg
(In order to stabilize the rotation of the drowsiness disk, i.e. to electrify the cable in the sliding state with the main magnetic pole and the auxiliary magnetic pole, the It has a stabilizing effect.
Soil (+ti pole [J11 part Hei 11
1. The capital and main magnet, the flat part of the Omata part, the front part of the rlli auxiliary pole and the front part of the heavy magnetic pole, and the auxiliary j+ and the flat part of the opposite part of the auxiliary magnetic pole, and the flat part of the upper part of the main magnetic pole, and the flat part of the auxiliary magnetic pole, and the flat part of the auxiliary magnetic pole, and the flat part of the auxiliary magnetic pole. , and once ~ the first blooming Buisk VC illusion, IJ giant i in a very stable sliding state
i's t+'+ V'tJ Was M k ++1ki record L13. /-1- can be done.

[Brief explanation of drawings]

Figure 7 shows the conventional 711j assistant (magnetic pole excitation (I type head 1).
Fig. 1111. /l is vertical (intensification recording medium/2 is straight carbonization recording medium//'s unitropic layer/3 is high?P
L magnetic thin film/Hiro is non-(1 There is. 2/ is 10 kolo (Muim Ki Disktsu/'s 1.4' King 1
1 tilt 231 rl + angle i ^ shi Uhi (sex A-'i
I model! 4' is 11 (1 赳17.lE sentence carrier 2 t
6-j "-a'4 JrJA" iJ rllll
uJJ (1M 4aj. 27 is winding 2g is upper value 4 edge part flat 1j1 (vine v; I main I L't!t4iik provisional MIS flat 1..
14 part 30 is the main magnetic pole tip 3 / face support (height 4 + l) l usage curved surface 32 is the auxiliary pole 1 river part flat part 33 is the auxiliary frame rear flat part 3g is 1; This is an arrow indicating the direction of rotational force.

Claims (2)

[Claims] (1) In a head for perpendicular magnetization of the I8/μ excitation type, in which the main magnetic pole and the auxiliary (d) pole are arranged opposite to each other via the recording medium, This is a head for Tsukuda that has a Japanese characteristic that the surface is made into a structure that standardizes the recording medium's motion. (2) Main (Gigoku and Auxiliary 4a, 4th and 4th sides facing each other through the entire recording medium)
'14-direction head +1. A main pole support having a J-shaped curve, an auxiliary pole having a concave curve facing the convex curved surface of the super pole support, Kamisuke I is formed with a concave curve and a superpole (superpole is placed (d) in the opposing space! 1:44
r! *21rl 4+'d head.