WO2004049336A1 - Hddサスペンション用積層体及びその製造方法 - Google Patents
Hddサスペンション用積層体及びその製造方法 Download PDFInfo
- Publication number
- WO2004049336A1 WO2004049336A1 PCT/JP2003/014989 JP0314989W WO2004049336A1 WO 2004049336 A1 WO2004049336 A1 WO 2004049336A1 JP 0314989 W JP0314989 W JP 0314989W WO 2004049336 A1 WO2004049336 A1 WO 2004049336A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laminate
- layer
- polyimide resin
- thickness
- stainless steel
- Prior art date
Links
Classifications
-
- 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
-
- 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
- G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/486—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives with provision for mounting or arranging electrical conducting means or circuits on or along the arm assembly
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
- H05K1/056—Insulated conductive substrates, e.g. insulated metal substrate the metal substrate being covered by an organic insulating layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
Definitions
- the present invention relates to a laminate used for HDD suspension and a method for manufacturing the same.
- the present invention relates to a laminated body for HDD suspension using a thin copper foil as a conductor layer and a method for producing the same.
- the suspension mounted on the hard disk drive (HDD) has been replaced by wire-type suspension, which has been used conventionally as the capacity has increased. Most of the suspension has been replaced.
- This wiring-integrated suspension is a type called FSA (Flex Suspension Assembly), which is a type of flexible printed circuit board that has been processed and bonded using an adhesive, and the CIS (Circuit Integrated Suspension) method.
- FSA Flexible Suspension Assembly
- CIS Circuit Integrated Suspension
- a process called TSA (Trace) which forms a wiring by forming an amic acid, which is a precursor of polyimide resin, which is called ⁇ imido acid '' after shaping it, forming it into an imidized material, and applying a plating process on the polyimide.
- the “suspension assembly” method which process a laminate made of stainless foil-polyimide resin-copper foil into a predetermined shape by etching.
- the FSA method is easy and inexpensive to process, it is said that it will not be technically compatible with further miniaturization in the future due to poor positioning accuracy in bonding with terminals because it is attached using an adhesive. I have.
- the CIS method has many advantages such as excellent dimensional accuracy because wiring is formed by direct plating on polyimide, and it has many advantages such as easy control of electrical characteristics due to the use of pure copper.
- the number of steps must be increased, for example, the imidized polyimide resin must be removed with a laser, etc., and the wiring cannot be bent because the wiring strength is weak.
- the TSA suspension can easily form flying leads by laminating high-strength copper foil, and must have a high degree of freedom in shape and shape, and be relatively inexpensive and have good dimensional accuracy. Widely used from.
- W098 / 08216 discloses a laminate for HDD suspension in which a polyimide resin layer and a conductor layer are sequentially formed on a stainless steel substrate. It describes the linear expansion coefficient of the polyimide resin layer and the adhesive force between the polyimide resin layer and the conductor layer in order to make the laminate suitable for HDD suspension laminates. I have. However, with the technology disclosed here alone, it is becoming difficult to control the impedance in order to cope with the future increase in HDD capacity and data transmission speed, and to respond to fine wiring. For example, in the above-mentioned W098 / 08216, a laminate using 9 ⁇ m copper foil is shown, but the copper foil used is an electrolytic copper foil having a tensile strength of less than 400 MPa.
- the present invention increases the degree of freedom of panel characteristics required for suspension by reducing the thickness of a copper foil to facilitate control of the flying height of a slider, and forms a stable flying lead.
- It provides a substrate material for HDD suspensions that has a conductor layer with sufficient strength to process and that can process high-level fine wiring, without impairing workability up to now. It is an object of the present invention to provide a laminate for an HDD suspension capable of achieving a higher capacity of a HDD and a method of manufacturing the same.
- the conductor layer is composed of a stainless steel layer / polyimide resin layer / conductor layer, and the conductor layer is a copper foil or an alloy copper foil having a thickness of 14 zm or less, a tensile strength of 400 MPa or more, and a conductivity of 65% or more.
- This is a laminate for HDD suspension.
- the present invention provides a method for applying a polyimide resin liquid on a stainless steel layer and heat-treating the polyimide resin layer to form a polyimide resin layer, and then apply a thickness of 14 ⁇ m or less, a tensile strength of 500 MPa or more, Rolled copper alloy foil with a rate of 65% or more is laminated and heated and pressed at a temperature of 280 ° C or more under a pressure of l to 20MPa to form a laminate composed of stainless steel layer / polyimide layer / conductor layer
- a method for producing a laminate for HDD suspension which is characterized in that:
- the laminated body for HDD suspension of the present invention (hereinafter also referred to as a laminated body) It consists of a stainless steel layer / polyimide resin layer / conductor layer.
- the stainless steel layer in the present invention is not particularly limited, but from the viewpoint of spring characteristics and dimensional stability, SUS 304 is preferable, and SUS 304 annealed at a temperature of 300 ° C. or more is particularly preferable.
- the thickness of the stainless steel used is preferably in the range of 10 to 50 ⁇ m, particularly preferably in the range of 12 to 30 ⁇ m. If the thickness of the stainless steel layer is less than 10 ⁇ m, it may not be possible to secure the spring property that sufficiently suppresses the flying height of the slider.On the other hand, if the thickness exceeds 50 ⁇ m, the rigidity becomes too large and the mounted slider is low. Levitation may be difficult.
- the polyimide resin constituting the polyimide layer in the laminate may be polyimide, polyamide imide, polyether imide or any other resin having an imido bond in its structure.
- the preferable range of the thickness of the polyimide resin layer is 5 to 25 ⁇ m, particularly preferably 5 to 20 ⁇ m. If the thickness of the polyimide resin layer is less than 5 m, the function as an insulating layer may not be sufficiently exhibited, while if it exceeds 25 / im, the polyimide layer at the time of suspension formation may be insufficient. Since the etching process takes a long time, the etched shape is deteriorated and the productivity is reduced.
- the polyimide resin layer may be composed of only a single layer, but is preferably composed of a plurality of polyimide resin layers.
- the polyimide layer is composed of a plurality of polyimide resin layers, use a polyimide resin layer that is in contact with the conductor layer or stainless steel layer and that has good adhesion to these conductor layers or stainless steel layers. It is preferable.
- Polyimide resins exhibiting good adhesiveness include those having a glass transition temperature of 300 ° C or lower. Also, the intermediate layer that does not contact the conductor layer or stainless steel layer has dimensional stability when HDD suspension is used.
- the linear expansion coefficient of 30 X 10- 6 / ° C or less particularly preferable to use the following 20 X 10- 6 / ° C.
- it is in the range of 5.
- the linear expansion coefficient of all the polyimide layers is preferably 30 X 10-V ° C or less.
- the conductor layer in the present invention is formed from a copper foil or a copper alloy foil.
- the copper alloy foil contains copper as an essential element and at least one kind of element other than copper such as chromium, zirconium, nickel, silicon, zinc, and beryllium. Alloy containing copper, with a copper content of 90% by weight or more. It is preferable to use a copper alloy foil having a copper content of 95% by weight or more.
- the thickness of the copper foil or copper alloy foil forming the conductor layer needs to be 14 ⁇ or less, and is preferably in the range of 7 to 14 ⁇ m. On the other hand, if the thickness exceeds 14 ⁇ m, the elasticity of the copper foil greatly affects the flying of the slider, which is not preferable from the viewpoint of fine positional accuracy.
- the laminate of the present invention requires the conductor layer to be thin, but also requires the conductor layer to have a tensile strength and conductivity of 400 MPa or more and 65% or more, respectively.
- the tensile strength is hardly reduced by heating, but when the electrolytic copper foil is used, the tensile strength sometimes decreases.
- the copper foil or alloy used as the conductor layer As the copper foil, one having a small change in tensile strength in the heat-compression bonding step or the like in the laminate manufacturing step is preferable.
- a copper foil or an alloy copper foil having a tensile strength of 400 MPa or more and a conductivity of 65% or more after being press-bonded at a temperature of 280 ° C. for 30 minutes under a pressure of 1 to 20 MPa and a temperature of 280 ° C. Is preferred.
- Conductive layer tensile strength is less than 400MPa When a flying lead is formed, sufficient copper foil strength cannot be obtained, and problems such as disconnection tend to occur. If the electrical conductivity is less than 65%, the noise generated from the copper foil resistor is radiated as heat, making impedance control difficult and the transmission speed unsatisfactory.
- a particularly preferred conductor layer is a rolled copper alloy foil having a tensile strength of 500 MPa or more and a dielectric constant of 65% or more.
- the values of the tensile strength and the electrical conductivity in the present invention are values measured by the method described in Examples described later. Next, a method for producing a laminate of the present invention will be described.
- a polyimide resin solution is applied on a stainless steel layer serving as a base.
- the polyimide resin liquid can be applied by a known method, and is usually applied using an applicator.
- As the polyimide resin solution a solution in which an imidized polyimide resin is dissolved in a solvent may be used, but in the present invention, a resin solution of a polyimide resin precursor is used, and After that, it is preferable to remove the solvent to some extent by preheating and then to perform imidization by heat treatment.
- the heat treatment for imidization is naturally omitted.
- the polyimide resin layer has two or more layers, the above-described coating and heating can be repeated to form a multilayer-structured polyimide resin layer.
- a copper foil having a thickness of 14 / m or less, preferably 7 to 14 / m or less, a tensile strength of 400 MPa or more, and a conductivity of 65% or more is formed on the polyimide resin layer.
- a copper alloy foil may be overlaid and heat-pressed at a temperature of 280 ° C. or more to form a laminate including a stainless steel layer, a polyimide layer, and a conductor layer. Electrodeposited copper foil tends to decrease tensile strength due to heating Therefore, it is preferable to use a rolled copper alloy foil having a tensile strength of 500 MPa or more.
- thermocompression bonding conditions are 1 to 50 MPa, particularly preferably 1 to 20 MPa, for 5 to 30 minutes.
- the hot pressing temperature at the time of pressurization needs to be 280 ° C or higher, but it is preferable that the pressing be performed in the range of 300 to 400 ° C. If the thermocompression bonding conditions are out of the above range, the laminating material is undesirably deformed such as warpage or a decrease in peel strength.
- each layer of the laminate is preferably in the range of 12 to 30 ⁇ 5 to 20 ⁇ . / 7 to 14 ⁇ m in the order of stainless steel layer / polyimide layer / conductor layer. A range from 20 to 50 ⁇ m is preferred.
- Electrodeposited copper foil is susceptible to warpage of the laminate due to irreversible elongation accompanying deformation of the composition at temperatures of 300 ° C or higher, and preferably rolled copper foil or rolled copper alloy due to the stability of the warpage of the laminate material A foil is used.
- the adhesive force between the metal foil and polyimide resin is After forming the mid-type resin layer, copper foil was further thermo-compressed to form a laminate of double-sided metal foil, and processed into a predetermined shape to prepare a test piece for measuring 1/8 inch wiring width. .
- the SUS foil side and the copper foil side were affixed to the fixed plate, and each metal foil was peeled in 90 ° direction using a tensile tester (Strograph-Ml, manufactured by Toyo Seiki Co., Ltd.). Was measured.
- the laminated body was processed into a disk having a diameter of 65 mm, left at 23 ° C. and a humidity of 50% for 24 hours, and the portion where the warp was greatest when placed on a desk was measured using a caliper.
- the conductivity was measured in accordance with JIS H0505.
- the coefficient of linear thermal expansion was measured by using a thermomechanical force analyzer (manufactured by Seikonce Turmend) at a rate of 20 ° C / min up to 255 ° C, holding at that temperature for 10 minutes, and then 5 ° C. Cooled at a constant rate of C / min. The average thermal expansion coefficient (linear thermal expansion coefficient) from 240 ° C to 100 ° C during cooling was calculated.
- DADMB 4,4'-Diamino-2,2'-Dimethylbiphene.
- BAPP 2,2'-bis [4- (4_aminophenoxy) phenyl] propane
- DMAc N, N-dimethylacetamide Synthesis Example 1
- the solution of polyimide precursor B obtained in Synthesis Example 2 was placed on a stainless steel foil (manufactured by Shinmoto Steel Co., Ltd., SUS304, tension-annealed product, thickness 20 ⁇ ) to a thickness of 1 m after curing. After drying at 110 ° C for 3 minutes, the solution of polyimide precursor A obtained in Synthesis Example 1 was cured to a thickness of 7.5 after curing. and dried at 110 ° C for 10 minutes.Furthermore, the polyimide precursor B solution obtained in Synthesis Example 2 was further cured to a thickness of 1.5 ⁇ . After drying at U 0 ° C for 3 minutes, the imidization is completed by stepwise heat treatment for several minutes in the range of 130 to 360 ° C for 3 minutes each. A laminate having a polyimide resin layer thickness of 10 ⁇ m was obtained. The first polyimide resin layer and the third polyimide resin layer were the same.
- the rolled copper alloy foil (NK-120, copper foil thickness 12 ⁇ m) manufactured by Japan Energy shown in Table 1 was overlaid, and using a vacuum press machine, the surface pressure was 15 MPa, the temperature was 320 ° C, and the press was pressed.
- the target laminate was obtained by thermocompression bonding under the conditions of a time of 20 minutes. When the characteristics of this laminate were evaluated, as shown in Table 1, it was a material with high strength and high electrical conductivity that sufficiently satisfied the basic performance required as a suspension substrate material.
- Example 2 In the same manner as in Example 1, a laminate having a polyimide resin layer thickness of 10 ra was formed on stainless steel.
- rolled rolled copper alloy foil (NK-120, copper foil thickness 8 ⁇ ) manufactured by Japan Energy Co., Ltd., and using a vacuum press machine, surface pressure 15Mpa, temperature 320.
- Press-bonding was carried out under the conditions of a press time of 20 minutes to obtain the desired laminate.
- the properties of this laminate were evaluated, and as shown in Table 1, the required laminate substrate material was required.
- Comparative example 1 was a material with high strength and high electrical conductivity that fully satisfied basic performance.
- Example 2 In the same manner as in Example 1, a laminate having a polyimide resin layer thickness of 10 ⁇ m was formed on stainless steel. Next, rolled copper foil (C7025, copper foil thickness 18 zm) manufactured by Ol in is superimposed and heated and pressed using a vacuum press machine under the conditions of a surface pressure of 15 MPa, a temperature of 320 ° C, and a press time of 20 minutes. Thus, an intended laminate was obtained. When the characteristics of this laminate were evaluated, as shown in Table 1, the basic performance required as a suspension board material was sufficiently satisfied, but impedance control was difficult due to low conductivity, and It was difficult to respond to future technical requirements because the copper foil was too thick to generate an excessive elastic force against the flying of the slider. Comparative Example 2
- Example 2 In the same manner as in Example 1, a laminate having a polyimide resin layer thickness of 10 ⁇ m was formed on stainless steel.
- the rolled copper foil (NK-120, copper foil thickness 18 / ra) manufactured by Japan Energy Co., Ltd. was superimposed, and using a vacuum press machine, the conditions were as follows: surface pressure 15Mpa, temperature 320 ° C, press time 20 minutes. To obtain the desired laminate.
- Example 2 In the same manner as in Example 1, a laminate having a polyimide resin layer having a thickness of 10 ⁇ m was formed on stainless steel.
- the suspension necessary for the technological breakthrough for increasing the capacity of HDDs
- the thickness of the copper foil is reduced so that the spring property for adjusting the flying height of the suspension slider can be easily controlled. This makes it possible to improve impedance control, reduce loss of electrical signals, and increase transmission speed.Furthermore, by maintaining high strength, it is easy to process flying leads and other shapes, and sufficient wiring strength during processing and practical use. It is suitably used as a substrate for HDD suspension, which is unlikely to cause problems such as disconnection due to its presence.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004555025A JPWO2004049336A1 (ja) | 2002-11-26 | 2003-11-25 | 薄肉銅箔を用いたhddサスペンション用積層体及びその製造方法 |
US10/534,249 US20060037674A1 (en) | 2002-11-26 | 2003-11-25 | Laminate for HDD Suspension With the use of Thin Copper Foil and Method for Manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002342457 | 2002-11-26 | ||
JP2002-342457 | 2002-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004049336A1 true WO2004049336A1 (ja) | 2004-06-10 |
Family
ID=32375887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/014989 WO2004049336A1 (ja) | 2002-11-26 | 2003-11-25 | Hddサスペンション用積層体及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060037674A1 (ja) |
JP (1) | JPWO2004049336A1 (ja) |
KR (1) | KR20050086860A (ja) |
WO (1) | WO2004049336A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006244563A (ja) * | 2005-03-01 | 2006-09-14 | Dainippon Printing Co Ltd | 配線部材およびフレキシャーの製造方法 |
WO2006109507A1 (ja) * | 2005-03-31 | 2006-10-19 | Nippon Steel Chemical Co., Ltd. | Hddサスペンション用積層体及びその製造方法 |
WO2006109512A1 (ja) * | 2005-03-31 | 2006-10-19 | Nippon Steel Chemical Co., Ltd. | Hddサスペンション用積層体 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060286742A1 (en) * | 2005-06-21 | 2006-12-21 | Yageo Corporation | Method for fabrication of surface mounted metal foil chip resistors |
JP5592740B2 (ja) * | 2010-09-22 | 2014-09-17 | 日東電工株式会社 | ハードディスクドライブのスライダ用回路付きサスペンション基板 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11154314A (ja) * | 1997-11-21 | 1999-06-08 | Ube Ind Ltd | 磁気ヘッドサスペンション及びその製造方法 |
JPH11264040A (ja) * | 1998-03-18 | 1999-09-28 | Nippon Mining & Metals Co Ltd | 銅合金箔 |
JP2002317231A (ja) * | 2000-03-14 | 2002-10-31 | Nippon Mining & Metals Co Ltd | ハードディスクドライブサスペンション用銅合金箔 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5084345A (en) * | 1990-11-26 | 1992-01-28 | E. I. Du Pont De Nemours And Company | Laminates utilizing chemically etchable adhesives |
US6203918B1 (en) * | 1996-08-19 | 2001-03-20 | Nippon Steel Chemical Co., Ltd. | Laminate for HDD suspension and its manufacture |
JP4508441B2 (ja) * | 2001-02-16 | 2010-07-21 | 新日鐵化学株式会社 | 積層体及びその製造方法 |
-
2003
- 2003-11-25 KR KR1020057009496A patent/KR20050086860A/ko not_active Application Discontinuation
- 2003-11-25 US US10/534,249 patent/US20060037674A1/en not_active Abandoned
- 2003-11-25 WO PCT/JP2003/014989 patent/WO2004049336A1/ja active Application Filing
- 2003-11-25 JP JP2004555025A patent/JPWO2004049336A1/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11154314A (ja) * | 1997-11-21 | 1999-06-08 | Ube Ind Ltd | 磁気ヘッドサスペンション及びその製造方法 |
JPH11264040A (ja) * | 1998-03-18 | 1999-09-28 | Nippon Mining & Metals Co Ltd | 銅合金箔 |
JP2002317231A (ja) * | 2000-03-14 | 2002-10-31 | Nippon Mining & Metals Co Ltd | ハードディスクドライブサスペンション用銅合金箔 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006244563A (ja) * | 2005-03-01 | 2006-09-14 | Dainippon Printing Co Ltd | 配線部材およびフレキシャーの製造方法 |
JP4498951B2 (ja) * | 2005-03-01 | 2010-07-07 | 大日本印刷株式会社 | 配線部材およびフレキシャーの製造方法 |
WO2006109507A1 (ja) * | 2005-03-31 | 2006-10-19 | Nippon Steel Chemical Co., Ltd. | Hddサスペンション用積層体及びその製造方法 |
WO2006109512A1 (ja) * | 2005-03-31 | 2006-10-19 | Nippon Steel Chemical Co., Ltd. | Hddサスペンション用積層体 |
JPWO2006109507A1 (ja) * | 2005-03-31 | 2008-10-23 | 新日鐵化学株式会社 | Hddサスペンション用積層体及びその製造方法 |
JPWO2006109512A1 (ja) * | 2005-03-31 | 2008-10-23 | 新日鐵化学株式会社 | Hddサスペンション用積層体 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004049336A1 (ja) | 2006-03-30 |
US20060037674A1 (en) | 2006-02-23 |
KR20050086860A (ko) | 2005-08-30 |
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