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
• • 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
  • G11B5/54—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 into or out of its operative position or across tracks
  • G11B5/55—Track change, selection or acquisition by displacement of the head
  • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
• • 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
  • G11B5/4813—Mounting or aligning of arm assemblies, e.g. actuator arm supported by bearings, multiple arm assemblies, arm stacks or multiple heads on single arm
• • 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
  • G11B5/488—Disposition of heads
  • G11B5/4886—Disposition of heads relative to rotating disc

Definitions

• the invention relates to a carrier device for electromagnetic transducer heads of a magnetic disk memory having a magnetic disk stack, the transducer heads which are adjustable radially to the disk axis being attached to a carrier which is adjustable in the chord direction relative to the magnetic disks and by means of an arm-like head suspension the transducer heads assigned to the mutually facing surfaces of two adjacent magnetic disks lie one above the other in the axial direction.
• a carrier device of the generic type is known from DE-OS 18 05 842, in which a plurality of transducer heads for a magnetic disk surface with head suspensions arranged tangentially to the magnetic disk are fastened to a carrier which can be moved radially to the magnetic disk.
• a carrier which can be moved radially to the magnetic disk.
• two carriers are arranged one above the other between two magnetic disks parallel to the magnetic disk axis. This arrangement requires a very large spacing of the magnetic disks from one another, as a result of which the number of disks for a given volume and thus the storage capacity of a magnetic disk memory is greatly reduced.
• 2,972,738 also discloses a carrier device of the generic type, in which a transducer head for each of one of two mutually facing surfaces of two magnetic disks of a magnetic disk memory is arranged tangentially to the magnetic storage disks. ten head suspensions is held so that they lie one above the other parallel to the magnetic disk axis. Although the heads are only attached to one carrier here, the two head suspensions are arranged one above the other in the direction of the magnetic disk axis, which takes up a great deal of space, particularly in the area of the attachment points of the head suspensions on the carrier. Accordingly, a larger distance between the magnetic disks is also necessary for this carrier device, which in turn reduces the storage capacity of the magnetic disk memory.
• the object is achieved according to the invention in that the head suspensions carrying two superimposed transducer heads each have an angle measured in the plane of the plate are arranged offset with respect to one another so that their fastening points on the carrier do not lie one above the other in the axial direction.
• the design of the carrier device according to the invention combines the advantages of a small disk spacing with the possibility of being able to adjustably arrange the transducer heads on a line running radially to the magnetic disks.
• the distance of the magnetic disks to small values was primarily limited by the thickness of the carrier device at the fastening points of two head suspensions arranged one above the other in the disk axis.
• the fastening points of the head suspensions lie side by side in the plate plane, as a result of which the strength of the carrier device engaging between the magnetic plates is greatly reduced.
• the magnetic disks can therefore be stacked very close to one another, even though the Uandler heads lie one above the other in the axial direction and with respect to the. lat ⁇ ten are adjustable on a radial line. This enables high storage space capacities even in the case of magnetic disk memories with small disk diameters.
• the carrier device according to the invention is developed in such a way that a head suspension is directed in the direction of movement of the carrier and a further head suspension is directed transversely to the direction of movement of the carrier.
• a head suspension is directed in the direction of movement of the carrier and a further head suspension is directed transversely to the direction of movement of the carrier.
• the carrier can comprise a displaceably guided slide and an L-shaped carrier head fastened thereon, on the legs of which the head suspensions are fastened.
• the L-shaped carrier head can be produced easily and can be removed or replaced for maintenance work if the carrier head is releasably attached to the slide.
• the carrier head is advantageously designed such that the L-legs are directed transversely to or in the direction of movement of the carrier, the L-leg of the carrier head directed in the direction of movement of the carrier advantageously being arranged in front of the converter heads in the direction of movement of the plates.
• the head suspension arranged transversely to the direction of movement of the carrier is in this case aerodynamically favorable because the air flow resulting from the rotation of the magnetic storage plates flows in the longitudinal direction towards the head suspension from the wider longitudinal end attached to the carrier head.
• the head suspension arranged in the direction of movement of the carrier is also less susceptible to vibrations or pitching movements due to the position in the slipstream of the carrier head, which can lead to damage to the transducer head or the magnetic storage disks.
• the support head consists of a material rial with a substantially equal coefficient of expansion compared to the material of the head suspensions.
• the transducer heads maintain their position relative to one another even in the event of strong temperature fluctuations.
• Figure 1 is a partially schematic plan view of a carrier device according to the invention with transducer heads and magnetic storage disks and
• Figure 2 shows a section II-II of the device
• FIG. 1 shows a top view of the magnetic disks 12, 13 of a magnetic disk memory with an associated carrier device 10 for transducer heads 22, 24.
• the carrier device 10 consists of a carriage 14 which is movable radially to the magnetic disks 12, 13 and to which an L-shaped carrier head 16 is attached.
• This carrier head engages between two magnetic plates 12, 13 and carries two elongated head suspensions 18, 20 tapering towards the head, at the narrower longitudinal ends of which a transducer head 22, 24 (FIG. 2) is held.
• the head suspension 18 is tangential and the head suspension 20 is arranged radially to the magnetic storage disks 12, 13.
• the transducer head 22 carried by the head suspension 18 is assigned to the upward-facing surface of the lower magnetic storage disk 13, while the transducer head 24 held by the head suspension 20 is assigned to the downward-facing surface of the upper magnetic storage disk 12.
• the transducer heads 22, 24 are moved by the carrier 10 on a line running radially to the magnetic memory plates 12, 13.
• the air gap, not shown, of the transducer heads 22, 24 is always on a line running radially to the magnetic storage disks: 12, 13, so that the angle between the air gap and the tangent of a data track on a magnetic storage disk 12, 13 is 90 °.
• the thickness of the support head 16 in the direction of the axis C of the magnetic storage disks 12, 13 is small compared to their distance from one another. So that temperature changes do not lead to a displacement of the transducer heads 22, 24 transversely to the axis C of the magnetic storage disk 12, 13, the material of the carrier head 16 can consist of a material with an expansion coefficient that is essentially the same as the material of the head suspensions 18, 20.

Landscapes

• Supporting Of Heads In Record-Carrier Devices (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6348636

Family Applications (1)

Country Status (3)

Citations (5)

Family Cites Families (3)

• 1988
  • 1988-03-02 DE DE3806763A patent/DE3806763C1/de not_active Expired
• 1989
  • 1989-03-02 WO PCT/EP1989/000206 patent/WO1989008305A1/de unknown
  • 1989-03-02 KR KR1019890701881A patent/KR900700997A/ko not_active Ceased

Patent Citations (5)

Non-Patent Citations (3)

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