GB787902A - Method and means of magnetic recording - Google Patents

Method and means of magnetic recording

Info

Publication number
GB787902A
GB787902A GB2574754A GB2574754A GB787902A GB 787902 A GB787902 A GB 787902A GB 2574754 A GB2574754 A GB 2574754A GB 2574754 A GB2574754 A GB 2574754A GB 787902 A GB787902 A GB 787902A
Authority
GB
United Kingdom
Prior art keywords
tape
lead screw
transducer
pawl
disc
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
GB2574754A
Inventor
Alfred Schuetz
Karl Alexander Egerer
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.)
STANDARD APP FABRIK GmbH
Original Assignee
STANDARD APP FABRIK GmbH
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 STANDARD APP FABRIK GmbH filed Critical STANDARD APP FABRIK GmbH
Priority to GB2574754A priority Critical patent/GB787902A/en
Priority to GB146155A priority patent/GB789085A/en
Publication of GB787902A publication Critical patent/GB787902A/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
    • G11B5/54—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
    • G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • 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
    • G11B15/602—Guiding record carrier for track selection, acquisition or following
    • 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
    • G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
    • G11B5/5508—Control circuits therefor

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

787,902. Magnetic recording and reproducing apparatus. STANDARD APPARATE FABRIK GES. Sept. 6, 1954, No. 25747/54. Class 40 (2). In a magnetic tape record apparatus the tracks on the tape are closely spaced, for example 2 per m/m., each trace consisting of a part parallel with the edge of the tape, and a second part connecting the next trace and arranged at a defined angle therewith, a drive roller being provided having guide rings for accurately locating the tape, and the transducer being provided with layers, foils or shaped pieces of diamagnetic or ferromagnetic materials. The embodiment described with reference to Fig. 2 shows an endless coil 10 of tape supported on a driving plate 11, and a driving roller 9 having conical guides 12 of a hard material such as agate, hard glass or chromium. The transducer 20 traverses the width of the tape by means of a lead screw 19 which is normally stationary until a notch 6 in the tape operates a switch which causes a pawl 16 to be withdrawn from engagement with a pin 17 on a disc 18 solid with lead screw 19 and driven by a friction clutch 21. A counter 23 geared to lead screw 19 indicates the particular track being recorded or reproduced, while a knob 24 enables a particular track to be selected, a disc 26 coupled thereto serving to disengage the pawl 16 from the pin 17. Means are described with reference to Fig. 3 (not shown) whereby the direction of rotation of the lead screw may be automatically reversed at the end of the traverse of the transducer 20.
GB2574754A 1954-09-06 1954-09-06 Method and means of magnetic recording Expired GB787902A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2574754A GB787902A (en) 1954-09-06 1954-09-06 Method and means of magnetic recording
GB146155A GB789085A (en) 1954-09-06 1955-01-18 Tape recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2574754A GB787902A (en) 1954-09-06 1954-09-06 Method and means of magnetic recording

Publications (1)

Publication Number Publication Date
GB787902A true GB787902A (en) 1957-12-18

Family

ID=10232621

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2574754A Expired GB787902A (en) 1954-09-06 1954-09-06 Method and means of magnetic recording
GB146155A Expired GB789085A (en) 1954-09-06 1955-01-18 Tape recording apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB146155A Expired GB789085A (en) 1954-09-06 1955-01-18 Tape recording apparatus

Country Status (1)

Country Link
GB (2) GB787902A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643963A (en) * 1968-04-30 1972-02-22 Jahangir Madjidi Ahy Signal recording and/or playback apparatus
DE3112895C2 (en) * 1981-03-31 1987-04-23 Tandberg Data A/S, Oslo Device for adjusting a magnetic head in a magnetic tape recorder

Also Published As

Publication number Publication date
GB789085A (en) 1958-01-15

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