GB907975A - Improvements in and relating to magnetic tape recording and/or reproducing apparatus - Google Patents

Improvements in and relating to magnetic tape recording and/or reproducing apparatus

Info

Publication number
GB907975A
GB907975A GB3496260A GB3496260A GB907975A GB 907975 A GB907975 A GB 907975A GB 3496260 A GB3496260 A GB 3496260A GB 3496260 A GB3496260 A GB 3496260A GB 907975 A GB907975 A GB 907975A
Authority
GB
United Kingdom
Prior art keywords
tape
head
cushion
air
oct
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
GB3496260A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB907975A publication Critical patent/GB907975A/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
    • 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
    • G11B15/64—Maintaining desired spacing between record carrier and head by fluid-dynamic spacing
    • 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
    • G11B15/56—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 the record carrier having reserve loop, e.g. to minimise inertia during acceleration measuring or control in connection therewith
    • G11B15/58—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 the record carrier having reserve loop, e.g. to minimise inertia during acceleration measuring or control in connection therewith with vacuum column
    • 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
    • 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

Abstract

907,975. Feeding magnetic tapes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 12, 1960 [Oct. 21, 1959], No. 34962/60. Class 40 (2). An air-cushion, established by the movement of the tape, prevents the tape 32 from contacting a magnetic head 30, obviating abrasive wear. The tape is led round a pair of guide rollers 38, 40 arranged to produce a lap of at least 15 degrees. Tape tension, provided by adjusting the vacuum pressure in vacuum columns (Fig. 1, not shown) is arranged to oppose the force of the air-cushion to maintain a head/tape spacing of 0.0001 inch. A dual head assembly, Fig. 4, has a bi-cylindrical guidesurface S such that the centre trough allows the air-cushion to be renewed ahead of the trailing head. Any tendency for the centre of a wide, multi-track tape to balloon out of operative contact with the inner members of stacked heads may be prevented by longitudinal grooves in the head faces. Specification 733,807 is referred to.
GB3496260A 1959-10-21 1960-10-12 Improvements in and relating to magnetic tape recording and/or reproducing apparatus Expired GB907975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84776259A 1959-10-21 1959-10-21

Publications (1)

Publication Number Publication Date
GB907975A true GB907975A (en) 1962-10-10

Family

ID=25301432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3496260A Expired GB907975A (en) 1959-10-21 1960-10-12 Improvements in and relating to magnetic tape recording and/or reproducing apparatus

Country Status (2)

Country Link
DE (1) DE1111855B (en)
GB (1) GB907975A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249277A (en) * 1963-09-13 1966-05-03 Honeywell Inc Electrical apparatus
WO1991018389A1 (en) * 1990-05-08 1991-11-28 Eastman Kodak Company Bi-directional read while write magnetic head assembly having a wear avoidance contour

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638880A (en) * 1969-11-03 1972-02-01 Newell Ind Tape transport apparatus and cartridge therefor
US3961372A (en) * 1974-07-05 1976-06-01 International Business Machines Corporation Magnetic tape transport with slotted rotating head
US4387408A (en) * 1980-10-03 1983-06-07 Eastman Kodak Company Multi-speed magnetic recorder with wear resistance playback head

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1054807A (en) * 1951-01-17 1954-02-15 Philips Nv Method for magnetic recording of sound on a medium consisting of a tape or a wire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249277A (en) * 1963-09-13 1966-05-03 Honeywell Inc Electrical apparatus
WO1991018389A1 (en) * 1990-05-08 1991-11-28 Eastman Kodak Company Bi-directional read while write magnetic head assembly having a wear avoidance contour

Also Published As

Publication number Publication date
DE1111855B (en) 1961-07-27

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