CA1100629A - Grounded transducer for magnetic record disks - Google Patents
Grounded transducer for magnetic record disksInfo
- Publication number
- CA1100629A CA1100629A CA278,852A CA278852A CA1100629A CA 1100629 A CA1100629 A CA 1100629A CA 278852 A CA278852 A CA 278852A CA 1100629 A CA1100629 A CA 1100629A
- Authority
- CA
- Canada
- Prior art keywords
- head assembly
- disk
- ferrite core
- outrigger
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 33
- 239000004020 conductor Substances 0.000 claims abstract description 17
- 238000007747 plating Methods 0.000 claims abstract description 16
- 230000002463 transducing effect Effects 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 14
- 229910010293 ceramic material Inorganic materials 0.000 claims description 7
- 239000012777 electrically insulating material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 230000003245 working effect Effects 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 10
- 238000004804 winding Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 9
- 239000011521 glass Substances 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 6
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000035508 accumulation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 241000907788 Cordia gerascanthus Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001756 Polyvinyl chloride acetate Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 229920006333 epoxy cement Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 108010007387 therin Proteins 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/032—Positioning by moving the door or the cover
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/022—Positioning or locking of single discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
- G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
-
- 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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/11—Shielding of head against electric or magnetic fields
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49041—Fabricating head structure or component thereof including measuring or testing with significant slider/housing shaping or treating
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/698,235 US4058846A (en) | 1976-06-21 | 1976-06-21 | Grounded transducer for magnetic record disks |
| US698,235 | 1976-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1100629A true CA1100629A (en) | 1981-05-05 |
Family
ID=24804438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA278,852A Expired CA1100629A (en) | 1976-06-21 | 1977-05-20 | Grounded transducer for magnetic record disks |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US4058846A (OSRAM) |
| JP (1) | JPS537311A (OSRAM) |
| CA (1) | CA1100629A (OSRAM) |
| DE (1) | DE2727532A1 (OSRAM) |
| FR (1) | FR2356234A1 (OSRAM) |
| GB (1) | GB1543542A (OSRAM) |
| IT (1) | IT1115327B (OSRAM) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5460908A (en) * | 1977-10-24 | 1979-05-16 | Mitsubishi Electric Corp | Both side type flexible disc apparatus |
| US4317149A (en) * | 1980-06-02 | 1982-02-23 | International Business Machines Corporation | Magnetic head having static discharge means |
| JPS6224330Y2 (OSRAM) * | 1980-11-28 | 1987-06-22 | ||
| JPS57181424A (en) * | 1981-04-30 | 1982-11-08 | Hitachi Metals Ltd | Magnetic head device |
| US4642719A (en) * | 1982-02-18 | 1987-02-10 | Hitachi Metals, Ltd. | Magnetic head assembly |
| JPS59116917A (ja) * | 1982-12-23 | 1984-07-06 | Sankyo Seiki Mfg Co Ltd | 磁気ヘツド |
| DE3482515D1 (de) * | 1983-03-22 | 1990-07-19 | Sony Corp | Zusammengesetzter magnetischer uebertragungskopf mit einem einzigen magnetpoltyp zur senkrechtaufzeichnung. |
| JPS6061910A (ja) * | 1983-09-16 | 1985-04-09 | Mitsubishi Electric Corp | 磁気ヘツド組立体 |
| US4586249A (en) * | 1983-12-30 | 1986-05-06 | Westinghouse Electric Corp. | Mandrel having an eddy current probe |
| DE3586171T2 (de) * | 1984-03-13 | 1992-12-17 | Olympus Optical Co | Magnetische aufnahme-/wiedergabevorrichtung. |
| US4731686A (en) * | 1984-03-21 | 1988-03-15 | Canon Denshi Kabushiki Kaisha | Magnetic head |
| US4593209A (en) * | 1984-05-24 | 1986-06-03 | Echlin Inc. | Read head for Wiegand Wire |
| JPS61196412A (ja) * | 1985-02-27 | 1986-08-30 | Mitsubishi Electric Corp | 磁気ヘツドとその製造方法 |
| US4926274A (en) * | 1986-12-04 | 1990-05-15 | Kabushiki Kaisha Toshiba | Magnetic head apparatus having surfaces contoured to minimize friction between a magnetic head and a magnetic disk |
| US4736122A (en) * | 1987-04-15 | 1988-04-05 | Echlin Inc. | Read head for Wiegand wire |
| US4928194A (en) * | 1988-09-30 | 1990-05-22 | Eastman Kodak Company | Anti-static support for a cartridge in a disk drive |
| US5047898A (en) * | 1989-11-13 | 1991-09-10 | International Business Machines Corporation | Deflectable contact for providing positive surface contact for shielding electromagnetic interference |
| US5142425A (en) * | 1990-08-09 | 1992-08-25 | Hewlett-Packard Company | Disk drive in which magnetic head-to-disk capacitive coupling is eliminated |
| US5600515A (en) * | 1993-06-30 | 1997-02-04 | Matsushita Electric Industrial Co., Ltd. | Sliding type magnetic head assembly having a spherical contact surface offset from a magnetic pole |
| US5735036A (en) * | 1994-12-16 | 1998-04-07 | International Business Machines Corporation | Lapping process for minimizing shorts and element recession at magnetic head air bearing surface |
| US6629357B1 (en) * | 1999-02-10 | 2003-10-07 | Read-Rite Smi Corp. | Method of magnetic head manufacture |
| JP2007310979A (ja) * | 2006-05-19 | 2007-11-29 | Fujitsu Ltd | 制御装置及び記憶装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3360614A (en) * | 1963-09-19 | 1967-12-26 | Minnesota Mining & Mfg | Shunted magnetic recording head |
| AT265691B (de) * | 1966-11-18 | 1968-10-25 | Philips Nv | Magnetkopf |
| JPS4826527B1 (OSRAM) * | 1969-02-13 | 1973-08-11 | ||
| FR2218611B1 (OSRAM) * | 1973-02-21 | 1976-09-10 | Cii | |
| US3846840A (en) * | 1973-08-10 | 1974-11-05 | Ibm | Read/write and longitudinal edge erase head assembly having multiple similarly shaped layers |
| US3879757A (en) * | 1974-03-01 | 1975-04-22 | Ibm | Data storage mechanism having a flexible magnetic disk |
-
1976
- 1976-06-21 US US05/698,235 patent/US4058846A/en not_active Expired - Lifetime
-
1977
- 1977-05-03 FR FR7714013A patent/FR2356234A1/fr active Granted
- 1977-05-06 GB GB19196/77A patent/GB1543542A/en not_active Expired
- 1977-05-20 CA CA278,852A patent/CA1100629A/en not_active Expired
- 1977-05-24 IT IT23901/77A patent/IT1115327B/it active
- 1977-05-31 JP JP6290177A patent/JPS537311A/ja active Granted
- 1977-06-18 DE DE19772727532 patent/DE2727532A1/de not_active Withdrawn
- 1977-08-25 US US05/827,530 patent/US4129937A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2356234A1 (fr) | 1978-01-20 |
| IT1115327B (it) | 1986-02-03 |
| US4058846A (en) | 1977-11-15 |
| DE2727532A1 (de) | 1977-12-22 |
| US4129937A (en) | 1978-12-19 |
| JPS537311A (en) | 1978-01-23 |
| GB1543542A (en) | 1979-04-04 |
| JPS5644483B2 (OSRAM) | 1981-10-20 |
| FR2356234B1 (OSRAM) | 1980-06-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |