WO1998045837A3 - Bearing for supporting a rotatable member in a recording/reproducing apparatus - Google Patents

Bearing for supporting a rotatable member in a recording/reproducing apparatus Download PDF

Info

Publication number
WO1998045837A3
WO1998045837A3 PCT/IB1998/000288 IB9800288W WO9845837A3 WO 1998045837 A3 WO1998045837 A3 WO 1998045837A3 IB 9800288 W IB9800288 W IB 9800288W WO 9845837 A3 WO9845837 A3 WO 9845837A3
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
shaft
thrust
head
rotatable drum
Prior art date
Application number
PCT/IB1998/000288
Other languages
French (fr)
Other versions
WO1998045837A2 (en
Inventor
Johannes Petrus Maria Verbunt
Josef Neges
Original Assignee
Koninkl Philips Electronics Nv
Philips Norden Ab
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 Koninkl Philips Electronics Nv, Philips Norden Ab filed Critical Koninkl Philips Electronics Nv
Priority to EP98904323A priority Critical patent/EP0906616A2/en
Priority to PCT/IB1998/000288 priority patent/WO1998045837A2/en
Priority to JP10529309A priority patent/JP2000511681A/en
Publication of WO1998045837A2 publication Critical patent/WO1998045837A2/en
Publication of WO1998045837A3 publication Critical patent/WO1998045837A3/en

Links

Classifications

    • 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
    • G11B5/52—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 simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis

Landscapes

  • Sliding-Contact Bearings (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

An apparatus comprises a magnetic head (11) for reading and/or writing information from/on an information carrier in the form of a magnetic tape (5). The head (11) is mounted on a rotatable drum (10) for moving the head (11) relative to the information carrier (5) which is wound around the drum (10). The rotatable drum (10) is supported in the radial direction by fluid bearings (25 and 26) and supported in the axial direction by a thrust bearing (23). The thrust bearing (23) comprises a bearing surface (21) of a thrust plate (20) and a convex end (22) of the shaft (14). The thrust plate (20) is made of cemented tungsten carbide and the shaft (14) is made of steel so that the thrust bearing (23) shows low friction and low wear. The steel shaft, the bearing (23) and a metal cap (13) carrying the thrust plate (20) form a ground system which limits static charging of the rotatable drum (10).
PCT/IB1998/000288 1997-04-04 1998-03-05 Bearing for supporting a rotatable member in a recording/reproducing apparatus WO1998045837A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98904323A EP0906616A2 (en) 1997-04-04 1998-03-05 Bearing for supporting a rotatable member in a recording/reproducing apparatus
PCT/IB1998/000288 WO1998045837A2 (en) 1997-04-04 1998-03-05 Bearing for supporting a rotatable member in a recording/reproducing apparatus
JP10529309A JP2000511681A (en) 1997-04-04 1998-03-05 Bearings for supporting rotatable components used in recording / reproducing devices

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP97200985.6 1997-04-04
EP97200985 1997-04-04
PCT/IB1998/000288 WO1998045837A2 (en) 1997-04-04 1998-03-05 Bearing for supporting a rotatable member in a recording/reproducing apparatus

Publications (2)

Publication Number Publication Date
WO1998045837A2 WO1998045837A2 (en) 1998-10-15
WO1998045837A3 true WO1998045837A3 (en) 1999-01-21

Family

ID=26146322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/000288 WO1998045837A2 (en) 1997-04-04 1998-03-05 Bearing for supporting a rotatable member in a recording/reproducing apparatus

Country Status (2)

Country Link
EP (1) EP0906616A2 (en)
WO (1) WO1998045837A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833924A (en) * 1971-10-30 1974-09-03 Shiba Electric Co Ltd Rotary head apparatus with dynamic air bearings having ceramic coatings

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833924A (en) * 1971-10-30 1974-09-03 Shiba Electric Co Ltd Rotary head apparatus with dynamic air bearings having ceramic coatings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI ON DIALOG, week 9612, DERWENT INFO LTD., AN 96-114115; & JP,A,08 014 250 (KYOCERA CORP). *

Also Published As

Publication number Publication date
EP0906616A2 (en) 1999-04-07
WO1998045837A2 (en) 1998-10-15

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