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GB1371671A - Magnetic tape transport - Google Patents

Magnetic tape transport

Info

Publication number
GB1371671A
GB1371671A GB382972A GB382972A GB1371671A GB 1371671 A GB1371671 A GB 1371671A GB 382972 A GB382972 A GB 382972A GB 382972 A GB382972 A GB 382972A GB 1371671 A GB1371671 A GB 1371671A
Authority
GB
United Kingdom
Prior art keywords
loop
reel
speed
reels
rewind
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
GB382972A
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Priority to GB5805273A priority Critical patent/GB1371672A/en
Priority to GB382972A priority patent/GB1371671A/en
Publication of GB1371671A publication Critical patent/GB1371671A/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
    • G11B15/56—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
    • 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
    • G11B15/1883—Driving; Starting; Stopping; Arrangements for control or regulation thereof for record carriers inside containers
    • 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
    • G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
    • 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
    • G11B15/66—Threading; Loading; Automatic self-loading
    • G11B15/665—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container
    • G11B15/6651—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against non rotating heads
    • 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
    • G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
    • G11B15/67581—Guiding containers, e.g. loading, ejecting cassettes with pivoting movement of the cassette holder

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

1371671 Automatic control of tension AMPEX CORP 27 Jan 1972 3829/72 Heading G3R [Also in Division G5] In a magnetic tape transport system comprising a capstan 28 Fig.2 and transducing heads 29, 31 between a pair of reels 41, 43 and in which tape loops 36, 37 are tensioned by differential pressure in columns 17 having sensing means for controlling the reel drives, the sides of the columns 17 diverge with increased loop length whereby the tape tension is increased with length and as shown, the loop 36 on the side of the take-up spool 41 is arranged to be longer than the loop 37 on the side of the supply spool 43 whereby frictional drag on the heads 29, 31 is compensated for. The tape tension is also thereby equalized on opposite sides of the capstan 28 to avoid slippage; there being no pinch roller provided. The loops 36, 37 are sensed by a pair of photo-cells 26 illuminated from strip lamps 24. During fast-rewind, only the loop in the column 17 associated with the supply reel 41 Fig.8 is used to control the motors for the reels 41, 43. In operation the fast-rewind supply reel 41 is driven to maintain a long loop towards position 163 and is decreased in speed only when the length is exceeded. Similarly the take-up reel 43 on fastrewind tries to maintain a short loop and is decreased in speed only when the loop is short of the position 168. The arrangement is therefore such that at least one of the reels 41, 43 will be running at its maximum speed and a maximum possible speed of rewind is obtained. The fastrewind means forms the subject of the claims of Specification 1371672. The complete system of automatic control is described with reference to Fig.7 (not shown) which illustrates a circuit including the controller (109) for amplifiers (133, 134) driving the reel motors (135, 136) and associated with error detectors (141, 142) incorporating the photo-cells 26 Fig.2.
GB382972A 1972-01-27 1972-01-27 Magnetic tape transport Expired GB1371671A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5805273A GB1371672A (en) 1972-01-27 1972-01-27 Magnetic tape transport
GB382972A GB1371671A (en) 1972-01-27 1972-01-27 Magnetic tape transport

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB382972A GB1371671A (en) 1972-01-27 1972-01-27 Magnetic tape transport

Publications (1)

Publication Number Publication Date
GB1371671A true GB1371671A (en) 1974-10-23

Family

ID=9765724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB382972A Expired GB1371671A (en) 1972-01-27 1972-01-27 Magnetic tape transport

Country Status (1)

Country Link
GB (1) GB1371671A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452152A1 (en) * 1979-03-22 1980-10-17 Sony Corp CASSETTE RECORDING APPARATUS
FR2526201A1 (en) * 1982-05-03 1983-11-04 Mfe Corp CASSETTE TAPE DRIVING DEVICE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452152A1 (en) * 1979-03-22 1980-10-17 Sony Corp CASSETTE RECORDING APPARATUS
FR2526201A1 (en) * 1982-05-03 1983-11-04 Mfe Corp CASSETTE TAPE DRIVING DEVICE
GB2121230A (en) * 1982-05-03 1983-12-14 Mfe Corp Streaming cassette tape transport
US4514775A (en) * 1982-05-03 1985-04-30 Mfe Corporation Streaming cassette tape transport

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees