WO2003032317A1 - Amorce de cartouche de bande a performances ameliorees pour cartouches a une seule bobine - Google Patents

Amorce de cartouche de bande a performances ameliorees pour cartouches a une seule bobine Download PDF

Info

Publication number
WO2003032317A1
WO2003032317A1 PCT/US2001/031635 US0131635W WO03032317A1 WO 2003032317 A1 WO2003032317 A1 WO 2003032317A1 US 0131635 W US0131635 W US 0131635W WO 03032317 A1 WO03032317 A1 WO 03032317A1
Authority
WO
WIPO (PCT)
Prior art keywords
tape cartridge
leader
tape
take
cartridge leader
Prior art date
Application number
PCT/US2001/031635
Other languages
English (en)
Inventor
David Thomas Hoge
William J. Vanderheyden
Michael Burke
Original Assignee
Quantum Corporation
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 Quantum Corporation filed Critical Quantum Corporation
Priority to US10/490,807 priority Critical patent/US7168648B2/en
Priority to DE10197274T priority patent/DE10197274T5/de
Priority to GB0407838A priority patent/GB2398921B/en
Priority to PCT/US2001/031635 priority patent/WO2003032317A1/fr
Priority to JP2003535194A priority patent/JP2005505878A/ja
Publication of WO2003032317A1 publication Critical patent/WO2003032317A1/fr

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
    • G11B15/66—Threading; Loading; Automatic self-loading
    • G11B15/67—Threading; Loading; Automatic self-loading by extracting end of record carrier from container or spool
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/107—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using one reel or core, one end of the record carrier coming out of the magazine or cassette
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/20—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for splicing to provide permanent or temporary connections
    • G11B23/26—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for splicing to provide permanent or temporary connections of leaders for loading or threading, e.g. to form a temporary connection

Definitions

  • the invention relates to digital tape cartridges, and in particular, to a tape cartridge leader having improved performance characteristics for use in single reel tape cartridges.
  • the single reel tape cartridge uses a tape buckling mechanism that consists of a tab that is inserted into a leader buckling hole formed in the tape drive take-up leader.
  • the tab and leader buckling hole combination cause an irregularity in that the tab overlays the edges of the leader buckling hole to build up a double thickness section of leader in the leader wrap on the take-up reel.
  • This irregularity causes a problem known as tape impressions which are marks that are left on the magnetic tape portion of the media as a result of the magnetic tape being wound tightly on top of the irregularity.
  • the tape impressions cause data loss and/or data corruption.
  • U.S. Patent No. 3,706,423 discloses a leader architecture that addresses this problem by providing two smoothing apertures, one located on each of two mating leaders to compensate for the irregularity caused by the buckling mechanism.
  • the smoothing apertures consist of round or oval holes that are formed in the leader.
  • the two smoothing apertures are positioned on the two leaders to underlay and overlay, respectively, the buckling mechanism. While these two smoothing apertures substantially compensate for the tape buckling irregularity, there are reliability problems with the present design of the tape cartridge leader due to the weakness in the leader that is caused by the two smoothing apertures.
  • the newer tape cartridges use thinner tape which results in more wraps of magnetic tape on the take-up reel and higher tape wrap pressures.
  • the thinner magnetic tape is therefore more susceptible to tape impressions, and any sharp edge in the buckling mechanism or smoothing apertures can cause tape impressions.
  • the smoothing apertures are oversized to account for tape wrap misalignment and the resultant gaps around the buckle area may cave in from the increased tape wrap pressure, thereby offsetting the smoothing effect of the smoothing apertures.
  • the smoothing apertures have sharp edges that can have burrs or rough edges left over from the manufacturing process. All of these elements can reduce the effectiveness of the smoothing apertures.
  • the present invention overcomes the problems outlined above and advances the art by providing a tape cartridge leader for a single reel tape cartridge that has improved performance and reliability.
  • the present tape cartridge leader comprises an elongated main body integrally formed between a first end and a second end.
  • the first end connects to the magnetic tape media that is wound on the supply reel in the single reel tape cartridge.
  • the second end includes an ovular aperture that buckles with the stem and tab of the take-up leader of the tape drive.
  • the tape cartridge leader includes a smoothing feature that comprises a blind cut out formed in a surface of the tape cartridge leader that faces the hub of the take-up reel when the tape cartridge leader is wound on the hub to compensate for the irregularity generated by the buckling mechanism.
  • the blind cut out consists of a shallow, smooth depression that is positioned to overlay the buckling mechanism.
  • the geometry and size of the blind cut out can be selected from a wide variety of options, with all of these variations having the advantage of providing increased tensile strength for the tape cartridge leader over tape cartridge leaders that use smoothing apertures, since there is no hole formed in the tape cartridge leader.
  • the blind cut out can be round, oval, rectangular, or shaped to match the geometry of the buckling mechanism and can occupy a portion of the width of the tape cartridge leader or can extend across the entire width of the tape cartridge leader. Since the blind cut out is formed as a smooth depression, no undesirable burrs or rough edges are present to cause tape impressions.
  • the blind cut out can be implemented in an analogous manner in the take-up leader in the tape drive. Thus, the concept of the blind cut out is equally applicable to the tape cartridge leader and the take-up leader.
  • Figurel illustrates an example of a single reel tape cartridge that could incorporate a tape cartridge leader according to the present invention
  • Figure 2 illustrates an example of a prior art tape cartridge leader connected to a take-up leader
  • FIGS 3, 3A illustrate a tape cartridge leader according to the present invention connected to a take-up leader and further cross-section details of this embodiment, respectively;
  • Figures 4, 4A & 4B illustrate an alternate embodiment of the tape cartridge leader according to the present invention connected to a take-up leader and further cross-section details of this embodiment, respectively; and Figure 5 illustrates another alternative embodiment of the tape cartridge leader according to the present invention.
  • Digital data is stored by tape drives on to magnetic tape media utilizing a variety of tape cartridge and tape cassette designs, but in all cases, the magnetic tape media is wound between a pair of tape reels as data is transferred to or from the magnetic tape media.
  • the physical space required to store data is an important concern.
  • tape drives often use the single reel tape cartridge design shown in Figure 1 , which utilizes a supply reel located within a removable tape cartridge (not shown) and a take-up reel 101 located within the tape drive 100.
  • FIG. 2 illustrates one such method wherein the magnetic tape media connects to the take-up reel 101 via a buckle 200 between a tape cartridge leader 203 and a take-up leader 201.
  • the tape cartridge leader 203 terminates the magnetic tape media at one end and consists of a strong flexible plastic strip that includes an ovular aperture 202 configured to mate with the take-up leader 201.
  • the take-up leader 201 is a similar strong flexible plastic strip that attaches at one end to the take-up reel 101 using a pair of integrally formed flanges 206 and 207.
  • the opposing end includes a stem 204 and a tab 205 designed to buckle with the ovular aperture 202 on the tape cartridge leader 203.
  • the take-up leader 201 also includes apertures 209, 210 and 208.
  • the take-up leader 201 When a tape cartridge is not present in the tape drive 100, the take-up leader 201 is wound around a plurality of guide rollers 102-105 in a curvilinear tape path and is secured in place by a rotating catch 106 that extends through the aperture 208.
  • the catch 106 is rotated to an out of the way position to enable the tape drive to wind the magnetic tape media between the take-up reel 101 and the supply reel in the tape cartridge.
  • the aperture 209 is used by the tape drive 100 to detect when the take-up leader 201 and the tape cartridge leader 203 are in an unbuckled position for ejection of the tape cartridge from the tape drive.
  • the aperture 210 is configured so that the buckle 200, between the take-up leader 201 and the tape cartridge leader 203, aligns with the aperture 210 to reduce the effect of the added height of the buckle 200 during winding around the take-up reel 101.
  • the tape cartridge leader 203 consists of a strong flexible plastic strip that includes an ovular aperture 202 that buckles with the stem 204 and tab 205 of the take-up leader 201 of the tape drive.
  • the tape cartridge is equipped with a rotating cartridge leader retention hook 214 which is fixed to the cartridge housing and that extends through rectangular-shaped aperture 212.
  • the guide wings are also used as a tape leader retention feature, since they engage stops formed in the guide tracks, to thereby limit the movement of the tape cartridge leader 203 into the tape cartridge.
  • Figures 3, 3A illustrate a tape cartridge leader according to the present invention connected to a take-up leader and further cross-section details of this embodiment, respectively.
  • Figures 4, 4A & 4B illustrate an alternate embodiment of the tape cartridge leader according to the present invention connected to a take-up leader and further cross-section details of this embodiment, respectively.
  • Figure 5 illustrates another alternative embodiment of the tape cartridge leader according to the present invention. It is anticipated however, that one skilled in the art will recognize numerous other examples in accordance with the principles described below, and thus, the following examples are for the purpose of illustration and not limitation. Those skilled in the art will also appreciate that various described features could be combined to form multiple variations of the invention.
  • the present tape cartridge leader 310 is similar in design and function to the conventional tape cartridge leader 203 and is configured for use in a conventional tape drive e.g. 100.
  • the tape cartridge leader 310 comprises an elongated main body 330 integrally formed between a first end 331 and a second end 332.
  • the first end 331 connects to the magnetic tape media 333 that is wound on the supply reel in the tape cartridge.
  • the second end 332 includes an ovular aperture 311 that buckles with the stem and tab 301 of the take-up leader 300 of the tape drive,
  • the cartridge leader buckling hole 311 comprises two parts: a buckling tip receiving aperture 319 and a mushroom tip receiver segment 312.
  • the buckling tip receiver aperture 319 comprises a target opening through which the mushroom tip 301 of the take-up leader 300 is inserted.
  • the take-up leader 300 is then engaged with the tape cartridge leader 310 by inserting the neck of the mushroom tip 301 into the mushroom tip receiver segment 312, so that the mushroom tip 301 of the take-up leader 300 cannot be pulled loose from the tape cartridge leader 310.
  • the tape cartridge leader 310 includes a blind cut out 340 that is formed in a surface of the tape cartridge leader 310 that faces said hub of the take-up reel when the tape cartridge leader 310 is wound on the hub to compensate for the irregularity generated by the buckling mechanism.
  • the blind cut out 340 consists of a shallow, smooth depression that is positioned to overlay the buckling mechanism when the tape cartridge leader 310 is wound on the hub.
  • the geometry and size of the blind cut out 340 can be selected from a wide variety of options, with all of these variations having the advantage of providing increased tensile strength for the tape cartridge leader 310 over tape cartridge leaders that use smoothing apertures, since there is no hole formed in the tape cartridge leader 310.
  • the blind cut out as shown in Figure 3 can be round (or oval), rectangular ( Figure 4), or shaped ( Figure 5) to match the geometry of the buckling mechanism and can occupy a portion of the width of the tape cartridge leader ( Figures 3, 5) or can extend across the entire width ( Figure 4) of the tape cartridge leader 310. Since the blind cut out is formed as a smooth depression (Cross-section Figures 3A, 4A, 4B), no undesirable burrs or rough edges are present to cause tape impressions.
  • the use of a blind cut out to compensate for the irregularity caused by the bucking mechanism solves the problem of tape impressions encountered in prior art single reel tape cartridges.
  • the blind cut out is illustrated as being implemented on the tape cartridge leader, this feature is equally applicable for use in the tape drive take-up leader.
  • the take-up leader blind cut out is formed in a surface of the take-up leader that faces away from the hub of the take-up reel when the tape cartridge leader is wound on the hub, for underlying the buckling mechanism when the tape cartridge leader is wound on the take-up reel.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

L'invention concerne une amorce de cartouche de bande comportant une caractéristique de lissage, qui inclut une découpe borgne formée dans une surface de ladite amorce située face au moyeu de la bobine réceptrice lorsque l'amorce est enroulée sur le moyeu, pour compenser l'irrégularité produite par le mécanisme de bouclage. La découpe borgne consiste en une dépression creuse et lisse, positionnée de façon à recouvrir le mécanisme de bouclage. La géométrie et la taille de la découpe peuvent être sélectionnées parmi un large éventail d'options, toutes ces variantes présentant l'avantage d'accroître la résistance à la traction de l'amorce de cartouche de bande par rapport à des amorces utilisant des orifices de lissage, car l'amorce de l'invention ne comporte pas de trou.
PCT/US2001/031635 2001-10-05 2001-10-05 Amorce de cartouche de bande a performances ameliorees pour cartouches a une seule bobine WO2003032317A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/490,807 US7168648B2 (en) 2001-10-05 2001-10-05 Performance tape cartridge leader for single reel tape cartridges
DE10197274T DE10197274T5 (de) 2001-10-05 2001-10-05 Leistungsverbesserter Bandkassettenvorsatz für Einspulen-Bandkassetten
GB0407838A GB2398921B (en) 2001-10-05 2001-10-05 Improved performance tape cartridge leader for single reel tape cartridges
PCT/US2001/031635 WO2003032317A1 (fr) 2001-10-05 2001-10-05 Amorce de cartouche de bande a performances ameliorees pour cartouches a une seule bobine
JP2003535194A JP2005505878A (ja) 2001-10-05 2001-10-05 シングルリールテープカートリッジ用の性能が改善されたテープカートリッジリーダ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/031635 WO2003032317A1 (fr) 2001-10-05 2001-10-05 Amorce de cartouche de bande a performances ameliorees pour cartouches a une seule bobine

Publications (1)

Publication Number Publication Date
WO2003032317A1 true WO2003032317A1 (fr) 2003-04-17

Family

ID=21742900

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/031635 WO2003032317A1 (fr) 2001-10-05 2001-10-05 Amorce de cartouche de bande a performances ameliorees pour cartouches a une seule bobine

Country Status (4)

Country Link
JP (1) JP2005505878A (fr)
DE (1) DE10197274T5 (fr)
GB (1) GB2398921B (fr)
WO (1) WO2003032317A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706423A (en) * 1971-01-04 1972-12-19 Bell & Howell Co Automatic loading and unloading tape transport apparatus utilizing a captive leader
EP0143598A2 (fr) * 1983-11-25 1985-06-05 Electronic Processors, Inc. Système d'enregistrement et de reproduction à bande magnétique avec enfilage automatique de bande
US4572460A (en) * 1984-02-13 1986-02-25 Digital Equipment Corporation Means for pulling tape from a reel
WO1986007471A1 (fr) * 1985-06-12 1986-12-18 Digital Equipment Corporation Procede de tirage de bandes
US4662049A (en) * 1984-02-13 1987-05-05 Digital Equipment Corporation Mechanism for joining tape leaders
EP0932155A2 (fr) * 1998-01-21 1999-07-28 Hewlett-Packard Company Assemblage de début de bande et bobine d'enroulement pour système de transport de bande magnétique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662149A (en) * 1986-03-28 1987-05-05 Hamilton Joel A Table-top apparatus and method for forming sealing packages

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706423A (en) * 1971-01-04 1972-12-19 Bell & Howell Co Automatic loading and unloading tape transport apparatus utilizing a captive leader
EP0143598A2 (fr) * 1983-11-25 1985-06-05 Electronic Processors, Inc. Système d'enregistrement et de reproduction à bande magnétique avec enfilage automatique de bande
US4572460A (en) * 1984-02-13 1986-02-25 Digital Equipment Corporation Means for pulling tape from a reel
US4662049A (en) * 1984-02-13 1987-05-05 Digital Equipment Corporation Mechanism for joining tape leaders
WO1986007471A1 (fr) * 1985-06-12 1986-12-18 Digital Equipment Corporation Procede de tirage de bandes
EP0932155A2 (fr) * 1998-01-21 1999-07-28 Hewlett-Packard Company Assemblage de début de bande et bobine d'enroulement pour système de transport de bande magnétique

Also Published As

Publication number Publication date
DE10197274T5 (de) 2005-03-10
GB0407838D0 (en) 2004-05-12
JP2005505878A (ja) 2005-02-24
GB2398921A (en) 2004-09-01
GB2398921B (en) 2005-04-13

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