GB759408A - Improvements in or relating to magnetic recording or reproducing apparatus - Google Patents

Improvements in or relating to magnetic recording or reproducing apparatus

Info

Publication number
GB759408A
GB759408A GB10438/54A GB1043854A GB759408A GB 759408 A GB759408 A GB 759408A GB 10438/54 A GB10438/54 A GB 10438/54A GB 1043854 A GB1043854 A GB 1043854A GB 759408 A GB759408 A GB 759408A
Authority
GB
United Kingdom
Prior art keywords
head
plate
bolt
magnetic recording
gap
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
Application number
GB10438/54A
Inventor
John William Driscoll
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB10438/54A priority Critical patent/GB759408A/en
Publication of GB759408A publication Critical patent/GB759408A/en
Expired legal-status Critical Current

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
    • G11B5/58—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
    • G11B5/584—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 for track following on tapes
    • 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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • 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
    • G11B5/488—Disposition of heads
    • G11B5/4893—Disposition of heads relative to moving tape
    • 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
    • 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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
    • 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
    • G11B5/584—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 for track following on tapes
    • G11B5/588—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 for track following on tapes by controlling the position of the rotating heads

Abstract

759,408. Magnetic recording or reproducing apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. April 7, 1955 [April 9, 1954], No. 10438/54. Class 40(2) A magnetic recording or reproducing aparatus of the type including at least one magnetic transducing head 1 comprising a magnetic core 3 provided with a narrow gap 4 across a record medium such as a tape 5 is moved, has the head or a member on which the head is mounted adjustably supported by a pair of spaced bearing surfaces 36 each of which forms a portion of a spherical surface, the head or member having means engaging the surfaces 36 whereby the head is capable of pivotal movement to vary the angular disposition of the gap 4. As shown, the head is contained in a screening can 2 and is mounted on a plate 7 in turn secured to a plate 15 having on one side of a vertical plane containing the gap 4 two apertures, one of which is elongated, to engage the corresponding surfaces 36, and on the other side of the plane an aperture engaged with clearance by a bolt 45 threaded into a self-locking nut 37 fixed to a plate 30 to which studs 31, 32 having the surfaces 36 are fixed and by rotation of which bolt 45 the pivotal adjustment is effected. Coil compression springs 39, 40 load the apertures in plate 15 and surfaces 36 into engagement and a similar spring 47 loads the plate 15 into engagement with the head of bolt 45. Riveted to the plate 15 is a strip of electrically insulating material 48 to which a pair of terminals 49, 50 is secured to receive lead wires (not shown) from the head. The plate 7 has elongated holes (not shown) for the fixing of the head and to permit backwards, forwards and also angular adjustment of the head in the plane of the plate 7. Instead of the plate 15 the surfaces 36 may be engaged by members secured to or integral with the screening can 2.
GB10438/54A 1954-04-09 1954-04-09 Improvements in or relating to magnetic recording or reproducing apparatus Expired GB759408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10438/54A GB759408A (en) 1954-04-09 1954-04-09 Improvements in or relating to magnetic recording or reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10438/54A GB759408A (en) 1954-04-09 1954-04-09 Improvements in or relating to magnetic recording or reproducing apparatus

Publications (1)

Publication Number Publication Date
GB759408A true GB759408A (en) 1956-10-17

Family

ID=9967860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10438/54A Expired GB759408A (en) 1954-04-09 1954-04-09 Improvements in or relating to magnetic recording or reproducing apparatus

Country Status (1)

Country Link
GB (1) GB759408A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837616U (en) * 1971-09-06 1973-05-08
WO1980000890A1 (en) * 1978-10-24 1980-05-01 Shinano Kikaku Co Ltd Mechanism for adjusting position of magnetic head for magnetic tape recorder/reproducer
US4506857A (en) * 1981-06-10 1985-03-26 Sony Corporation Adjustable mounting for a motor on a base

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837616U (en) * 1971-09-06 1973-05-08
WO1980000890A1 (en) * 1978-10-24 1980-05-01 Shinano Kikaku Co Ltd Mechanism for adjusting position of magnetic head for magnetic tape recorder/reproducer
US4506857A (en) * 1981-06-10 1985-03-26 Sony Corporation Adjustable mounting for a motor on a base

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