IT8049604A0 - Perfezionamento nelle testine magnetiche composite di registrazione e lettura - Google Patents

Perfezionamento nelle testine magnetiche composite di registrazione e lettura

Info

Publication number
IT8049604A0
IT8049604A0 IT8049604A IT4960480A IT8049604A0 IT 8049604 A0 IT8049604 A0 IT 8049604A0 IT 8049604 A IT8049604 A IT 8049604A IT 4960480 A IT4960480 A IT 4960480A IT 8049604 A0 IT8049604 A0 IT 8049604A0
Authority
IT
Italy
Prior art keywords
improvement
magnetic recording
composite magnetic
reading heads
heads
Prior art date
Application number
IT8049604A
Other languages
English (en)
Other versions
IT1148268B (it
Inventor
Charles A Barnes
Robert A Vonbehren
Original Assignee
Minnesota Mining & Mfg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of IT8049604A0 publication Critical patent/IT8049604A0/it
Application granted granted Critical
Publication of IT1148268B publication Critical patent/IT1148268B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/62—Maintaining desired spacing between record carrier and head
    • 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
    • G11B5/105—Mounting of head within housing or assembling of head and housing
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
IT49604/80A 1979-09-04 1980-09-03 Perfezionamento nelle testine magnetiche composite di registrazione e letture IT1148268B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/072,242 US4300179A (en) 1979-09-04 1979-09-04 Composite magnetic head with multitrack support structure

Publications (2)

Publication Number Publication Date
IT8049604A0 true IT8049604A0 (it) 1980-09-03
IT1148268B IT1148268B (it) 1986-11-26

Family

ID=22106422

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49604/80A IT1148268B (it) 1979-09-04 1980-09-03 Perfezionamento nelle testine magnetiche composite di registrazione e letture

Country Status (6)

Country Link
US (1) US4300179A (it)
EP (1) EP0035542B1 (it)
BR (1) BR8008814A (it)
DE (1) DE3070251D1 (it)
IT (1) IT1148268B (it)
WO (1) WO1981000780A1 (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686596A (en) * 1985-06-27 1987-08-11 Minnesota Mining And Manufacturing Company Recording head core yoke and method of manufacture
US4849841A (en) * 1987-04-10 1989-07-18 Irwin Magnetic Systems, Inc. Transducer head core structure with recessed magnetic closures
US5055959A (en) * 1990-01-09 1991-10-08 Digital Equipment Corporation Tape head with low spacing loss produced by narrow and wide wear regions
US5124866A (en) * 1990-02-01 1992-06-23 Minnesota Mining And Manufacturing Company Recording head core yoke with full length core support
US5179486A (en) * 1990-09-06 1993-01-12 Minnesota Mining And Manufacturing Company Head positioning and tape support apparatus for data recorder
US5426551A (en) * 1993-07-19 1995-06-20 Quantum Corp. Magnetic contact head having a composite wear surface
WO1995003606A1 (en) * 1993-07-19 1995-02-02 Quantum Corporation Magnetic head with self-regulating wear regions
NL1013553C2 (nl) * 1999-11-11 2001-05-14 Onstream B V Bandgeleidingsinrichting voor een magnetisch element op actuator.
NL1015833C2 (nl) * 2000-07-28 2002-01-29 Onstream B V Werkwijze voor het vervaardigen van een magneetkop.
US6937435B2 (en) * 2003-05-16 2005-08-30 Quantum Corporation Tape head with thin support surface and method of manufacture
US7154691B2 (en) * 2003-12-18 2006-12-26 Quantum Corporation Multi-format thinfilm head and associated methods
US8264793B2 (en) * 2004-01-30 2012-09-11 International Business Machines Corporation Tape head with facing beams each having a head chip positioned in a recess thereof
US7256963B2 (en) * 2004-09-16 2007-08-14 Quantum Corporation Magnetic head with adaptive data island and mini-outrigger and methods of manufacture
US7271983B2 (en) * 2004-09-16 2007-09-18 Quantum Corporation Magnetic head with mini-outriggers and method of manufacture
US20070183091A1 (en) * 2006-02-03 2007-08-09 Saliba George A Read/write head having varying wear regions and methods of manufacture

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353168A (en) * 1964-04-09 1967-11-14 Potter Instrument Co Inc Wide-record narrow-read magnetic head
NL156528B (nl) * 1966-09-15 1978-04-17 Philips Nv Magnetische schrijf-lees-wiskop.
NL156849B (nl) * 1966-09-15 1978-05-16 Philips Nv Magnetische schrijf-lees-wiskop.
US3582917A (en) * 1968-12-13 1971-06-01 Ibm Magnetic head having a continuously variable radius of curvature
US3660892A (en) * 1969-09-10 1972-05-09 Matsushita Electric Ind Co Ltd Method for making a multi-channel magnetic head
JPS4838826U (it) * 1971-09-10 1973-05-14
US3787963A (en) * 1973-02-05 1974-01-29 Honeywell Inf Systems Method of fabricating a multi-head magnetic transducer assembly
US3846840A (en) * 1973-08-10 1974-11-05 Ibm Read/write and longitudinal edge erase head assembly having multiple similarly shaped layers
US3964103A (en) * 1975-05-19 1976-06-15 Shugart Associates, Inc. Magnetic transducer with trim erase and housing therefor
US4110804A (en) * 1977-07-21 1978-08-29 International Business Machines Corporation Read/write and tunnel erase magnetic head assembly
US4152742A (en) * 1977-10-31 1979-05-01 Nortronics Company, Inc. Back bar retainer for magnetic head
US4164781A (en) * 1978-04-11 1979-08-14 Decitek Track servoing system using signals from tunnel erase heads

Also Published As

Publication number Publication date
DE3070251D1 (en) 1985-04-11
IT1148268B (it) 1986-11-26
EP0035542B1 (en) 1985-03-06
WO1981000780A1 (en) 1981-03-19
US4300179A (en) 1981-11-10
BR8008814A (pt) 1981-06-23
EP0035542A4 (en) 1982-01-11
EP0035542A1 (en) 1981-09-16

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19940928