专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明专利

JP2003109338A MAGNETIC HEAD ASSEMBLY 审中-公开
公开(公告)号：JP2003109338A
公开(公告)日：2003-04-11
申请号：JP2002262996
申请日：2002-09-09
申请人： FUJITSU LTD
发明人： OE TAKESHI , WATANABE TORU , FURUISHI RYOSUKE , YONEOKA SEIJI
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To stabilize a floatation characteristic of a slider by suppressing the amount of curvature of the slider within an allowable range even due to temperature change about a magnetic head assembly. SOLUTION: In this magnetic head assembly in which the slider 3 is fixed onto a gimbal spring 1 with an adhesive 8, in the first form, the gimbal spring 1 is supported integrally with a load beam 2 by a beam 6, thin film wiring pattern 12 on the load beam 2 is guided to the surface of the gimbal spring 1 through the beam 6, the point part of the thin film wiring pattern 12 is made to be a connection terminal 13 for an input-output terminal of a magnetic head provided at a slider end part, and a plurality of thin film dummy patterns 15 that are as high as the wiring pattern 12 are provided at an application position of the adhesive on the gimbal 1 and are stuck onto the gimbal spring 1 without tilting the slider. In the second form, the cured Young's modulus of the adhesive 8 is made equal to or less than about 1/13000 of that of material of the slider or the gimbal spring 1, and in a third form, the Young's modulus of the slider is almost equal to that of the gimbal spring 1.

42. 发明专利

JPH08212740A MAGNETIC DISK APPARATUS AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH08212740A
公开(公告)日：1996-08-20
申请号：JP1734195
申请日：1995-02-03
申请人： FUJITSU LTD
发明人： MIZOSHITA YOSHIBUMI , KASAMATSU YOSHIHARU , YAMAMOTO NAOYUKI , YOKOHATA TORU , YONEOKA SEIJI , TOYOGUCHI TAKU
IPC分类号： G11B5/60 , G11B21/21
摘要： PURPOSE: To further reduce the attraction force between a magnetic recording medium and a magnetic head slider, and to prevent the damage of lubricant on the surface of a magnetic disk surface in a CSS type magnetic disk apparatus using the slider which can float from the surface of the medium. CONSTITUTION: A magnetic head slider 4 has a floating force generating rail surface 44 formed by allowing the side opposed to the surface of a magnetic recording medium, a first protrusion 45 formed at the air flow input end side on the surface 44, and a second protrusion 46 formed to increase the area larger than the protrusion 45 on the air flow-out end side on the surface 44.

43. 发明专利

JPH05303722A 失效
公开(公告)号：JPH05303722A
公开(公告)日：1993-11-16
申请号：JP10776192
申请日：1992-04-27
申请人： FUJITSU LTD
发明人： MAETA HIROSHI , YONEOKA SEIJI
IPC分类号： G11B5/31 , G11B5/60
摘要： PURPOSE:To precisely positon a slider block related to a holder positioning the slider block. CONSTITUTION:This holder is constituted of a holder body 41 and an aligning plate 42. The aligning plate 42 consists of an aligning plate body 45 and a second engaging part 46-1. The aligning plate 42 is fixed temporarily on the holder body 41 by screwing. The slider blocks 23-1, 23-2 are pressed to a first engaging part 44-1 of the holder body 41 by the second engaging part 46-1. This holder is constituted so that the aligning plate body 45 presses the slider blocks 23-1, 23-2 on the holder body 41.

44. 发明专利

JPH04286713A PRODUCTION OF THIN-FILM MAGNETIC HEAD 失效
公开(公告)号：JPH04286713A
公开(公告)日：1992-10-12
申请号：JP5288991
申请日：1991-03-18
申请人： FUJITSU LTD
发明人： KATAYAMA MAKI , MIZOSHITA YOSHIBUMI , YONEOKA SEIJI
IPC分类号： G11B5/31 , G11B5/60
摘要： PURPOSE:To form floating rails without impairing the quality of thin-film magnetic head elements by using the dry film photoresist deposited to cover the thin-film magnetic head element. CONSTITUTION:The surface to be formed with the floating rails of a slider block formed with the thin-film magnetic head elements on its end face is etched and is formed with a groove, by which the floating rails are relatively formed. The dry film photoresist 42 is used in such a case. This resist 42. is deposited in the patterns corresponding to the floating rails to be formed on the surface 24 to be formed with the floating rails of the slider block 23. The resist is held deposited on the end face 22 so as to cover the thin-film magnetic head element 6, 7 and is etched in this state.

45. 发明专利

JPH04228157A MAGNETIC HEAD SLIDER 失效
公开(公告)号：JPH04228157A
公开(公告)日：1992-08-18
申请号：JP14485291
申请日：1991-06-17
申请人： FUJITSU LTD
发明人： YONEOKA SEIJI
IPC分类号： G11B21/21 , G11B5/60
摘要： PURPOSE:To provide a slider for a magnetic disk whose durability and floating stability are improved while accumulation and adhesive matter are prevented from occurring because of the shape of a negative pressure slider which is used in a magnetic disk device. CONSTITUTION:In the slider for the magnetic disk device provided with at least two rail parts for generating floating force, a groove between the rails is formed to be shallow, and the width of the groove is changed to get wider from an air inflow side to an air outflow side, so that suction force or the floating force is generated in the groove.

46. 发明专利

JPH03292688A FLOATING HEAD SUPPORTING BODY 失效
公开(公告)号：JPH03292688A
公开(公告)日：1991-12-24
申请号：JP9429090
申请日：1990-04-10
申请人： FUJITSU LTD
发明人： OE TAKESHI , MIZOSHITA YOSHIBUMI , TAKAHASHI MINORU , YONEOKA SEIJI
IPC分类号： G11B5/49 , G11B21/21
摘要： PURPOSE:To increase the rigidity without increasing the equivalent mass by providing a rib which has an approximately triangular aperture in the center and is folded in parts along both sides and parts along the base part side and two oblique sides of a head supporting body of the aperture. CONSTITUTION:A pair of outer rib parts 11 and 12 are folded upward along both sides of a rigid beam part 10 throughout overall length of this part 10, and an isosceles trapezoidal aperture 13 has a bottom 13a on the side of a spring part 9 and is bilaterally symmetrical with respect to a center line 14 of the rigid beam part 10. Inner ribs 15 and 16 are folded upward along oblique sides 13c and 13d on both sides of the aperture 13, and an inner rib part 17 is folded upward along the bottom 13a of the aperture 13. Thus, the rigidity in the lengthwise direction is increased, and the rigidity of parts of less rigidity in the breadthwise direction is increased, and the weight is reduced by the aperture, and the variance of the extent of floating of a head is suppressed.

47. 发明专利

JPH03260654A METHOD FOR FORMING PATTERN BY USING DRY FILM RESIST 失效
公开(公告)号：JPH03260654A
公开(公告)日：1991-11-20
申请号：JP6161490
申请日：1990-03-12
申请人： FUJITSU LTD
发明人： KATAYAMA MAKI , YONEOKA SEIJI
IPC分类号： G03F7/16 , G11B5/60
摘要： PURPOSE:To ensure removal of the protruding part of a resist film without impairing close adhesion of the film by arranging a substrate in the holding groove of a holder provided with stepped part and laminating the resist on the substrate and developing it in this state after imagewise exposure. CONSTITUTION:The substrate holder 21 is provided with the holding groove 22 smaller in the depth than the thickness of the substrate 3 and the groove 22 is provided with stepped part 23. The substrate 3 is disposed in the groove 22, and the dry film resist 13 is laminated on the substrate 3 and the surrounding holder 21, exposed through a desired photomask 24 in this state, and developed to form a pattern, thus permitting the unnecessary protruding parts of the resist 13 to be certainly removed without impairing the close adhesion of the resist 13 with the substrate 3 and the protruding resist 13 to be dissolved off from both sides by virtue of the stepped parts 23.

48. 发明专利

JPS63195884A HEAD CRUSH DETECTOR 失效
公开(公告)号：JPS63195884A
公开(公告)日：1988-08-12
申请号：JP2842287
申请日：1987-02-09
申请人： FUJITSU LTD
发明人： TAKAHASHI MINORU , YONEOKA SEIJI , OE TAKESHI
IPC分类号： G11B21/21
摘要： PURPOSE:To remove a noise and to improve the quality of signals by differentially amplifying respective signals outputted from respective upper electrodes and comparing the amplified signals with a reference value to detect head crush. CONSTITUTION:The lower electrodes 14A, 15A of a pair of AE sensors 14, 15 are connected to an earth potential, respective signals outputted from respective upper electrodes 14B, 15B are differentially amplified by a differential amplifier 21 and passed through a band pass filter 22 to remove mechanical noise and electric noise and a signal in an objective signal band is selected and outputted. A signal outputted from the band pass filter 22 is led into a comparator 23 and compared with a threshold led as a reference signal and the compared result is outputted as an objective head crush signal.

49. 发明专利

JPS62145583A SUPPORTING MECHANISM FOR NEGATIVE PRESSURE SLIDER 失效
公开(公告)号：JPS62145583A
公开(公告)日：1987-06-29
申请号：JP28635685
申请日：1985-12-18
申请人： FUJITSU LTD
发明人： YONEOKA SEIJI , OE TAKESHI , TAKAHASHI MINORU , ARIGA TAKAHARU
IPC分类号： G11B21/21
摘要： PURPOSE:To eliminate a seek error due to a dislocation between a supporting spring and a negative pressure slider, and to improve reliability for a magnetic disk device remarkably by constituting a device so that the negative pressure slider is supported with a needle arranged on the supporting spring. CONSTITUTION:The supporting mechanism of the negative pressure slider is constituted providing with a negative pressure slider 1 equipped with a cone- shaped recessed part 2 at the center part of a back plane, and a supporting spring 5 equipped with a needle 7 engaged in the recessed part 2, and the negative pressure slider 1 is constituted so as to be coupled with the supporting spring 5 through the needle 7 inserted to the recessed part 2 of cone shape. Since the negative pressure slider 1 and the supporting spring 5 are coupled with each other at one point, and so-called 'sliding phenomenon' is not generated, the seek error is not generated.

50. 发明专利

JPS6227156B2 失效
公开(公告)号：JPS6227156B2
公开(公告)日：1987-06-12
申请号：JP17099379
申请日：1979-12-28
申请人： FUJITSU LTD
发明人： KUME TOMIO , TSUTSUMI SHOICHI , YONEOKA SEIJI
IPC分类号： C23F4/00 , C23F1/00 , G11B5/127 , G11B5/187

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式