US3632053A - Tape reel - Google Patents

Tape reel Download PDF

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Publication number
US3632053A
US3632053A US838954A US3632053DA US3632053A US 3632053 A US3632053 A US 3632053A US 838954 A US838954 A US 838954A US 3632053D A US3632053D A US 3632053DA US 3632053 A US3632053 A US 3632053A
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Prior art keywords
inner ring
outer ring
web
beam member
ring
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Expired - Lifetime
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US838954A
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William H Edwards
Donald M Lewis
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3M Co
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Minnesota Mining and Manufacturing Co
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    • 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
    • G11B23/037—Single reels or spools

Definitions

  • a reel comprising a hub and axially spaced parallel said flanges, said hub having an inner ring formed with a central opening to receive a spindle, a web supported about the periphery of the inner ring upon which the flanges may he mounted, and an outer compression ring positioned between the flanges and surrounding said web and supported therefrom by resilient means.
  • This invention relates to an improved reel structure and in one aspect to a reel structure which will support the heavy loading and permits the use of lighter and less expensive materials.
  • the reel structures for long lengths or large volumes of strip material have required considerable strength in the hub sections to prevent them from being compressed or collapsed onto the spindle supporting the reel.
  • the problem is particularly acute when the material being wound is very thin (approaching 0.0005) and is elastic, e.g. web material formed of polyethylene terephthalate. Winding tension from such material is transmitted to the hub as a compressive pressure and is cumulative with each successive wrap causing the reel to collapsed or be crushed and pressed onto the spindle, thus causing the reel flanges to be distorted and move toward each other closing the tape path.
  • This situation can be alleviated by reel hubs constructed according to the present invention.
  • the reel hub and reel of the present invention comprises a hub through which a bore is formed to receive the spindle and around which is formed a peripheral web for supporting axially spaced parallel reel flanges. Supported also from the web and positioned between the reel flanges is an outer compression ring upon which the tape is wound, which ring is supported by resilient means from the web.
  • the resilient means may be beamlike members which support the compression loading of the outer ring, however, other resilient rings or members may be positioned between the web and the outer ring to absorb the compression loading.
  • FIG. 1 is an elevational view of a reel constructed in accordance with the present invention having portions of one flange removed to show the interior parts of the hub;
  • FIG. 2 is an enlarged detailed view of a portion of the hub.
  • FIG. 3 is an enlarged fragmentary sectional view taken along the line 33 of FIG. 1.
  • FIG. 1 a reel 5 having axially spaced parallel flanges 6 and 7 supported from a hub generally designated by the reference numeral 8.
  • the hub 8 comprises an inner ring 9 with an axial thickness substantially equal to the axial thickness of the reel 5 and including a peripherally mounted web 10 for supporting the flanges 6 and 7.
  • the inner ring 9 has a central opening 11 formed to receive and support a driving spindle of a winding mechanism or of a reproducing, projecting or recording apparatus.
  • the web 10 extends around the outer periphery of the ring 9 and is formed with recessed areas 12 permitting a reduction in material and weight of the hub but is a generally continuous member having opposed axial surfaces to which the reel flanges may be secured by sonic welding such as illustrated by the weldments 13 in FIG. 3.
  • an outer compressible ring 14 Positioned between and spaced slightly from each inner face of the reel flanges is an outer compressible ring 14 having an outer peripheral surface 15 upon which a strip of material may be convolutely wound.
  • a resilient member is positioned around the outer edge of the flange supporting web 10 of the hub 8 to support the compression ring 14.
  • This resilient member in the illustrated embodiment generally comprises a rib structure comprising members joined to the web and to the compressible ring and affording deflection of the members.
  • the structure illustrated comprises [2 equally spaced radially extending ribs or pillars 17 supporting a continuous resilient beam member 16, and said beam supports the compressible ring 14 from 12 spaced radially positioned ribs or posts 18 positioned between the beam and the inner diameter of the ring and circumferentially spaced from, or positioned on the beam intermediate, each pillar.
  • the structure supports the outer ring 14 as the compression loading is applied to the outer ring upon the winding of a magnetic tape or thin film upon the reel.
  • the compression forces are taken up by flexure of the beam 16 between each of the pillars 17 from the loading transferred thereto by posts 18.
  • the beams or portions of beam member 16 between the pillars are capable of withstanding the compressive stresses applied thereto from the ring 14 and deflect under the compressive stresses. When the stress is relieved the beam will return to its original circular shape.
  • a suitable material for constructing the reel of the present invention is a glassfilled styrene which is a common material used in the art where it is desired that shrinkage of the polymeric material after the molding operation be reduced. It is understood however that other light materials such as aluminum may be used.
  • the number of pillars or posts used with the resilient structure, as illustrated in the accompanying drawings, may vary in number, however supporting the outer ring from 12 positions affords only a slight change in the outer peripheral surface 15 and is much preferred over a lesser number, for example, three or four posts, where the compressible ring could be caused to crush or fail and form three or four lobes, thus making a substantial change in its configuration.
  • a reel hub comprising an inner ring defining a central opening for receiving a spindle
  • second support means for supporting said outer ring in radially spaced relation from said resilient beam member, said second support means being spaced circumferentially about said beam from said first support means such that along any radial path between the outer periphery of the outer ring and the opening in the inner ring there is a discontinuity of material on at least one of the radially opposite sides of said beam member such that compressive stresses imparted to said outer ring as a web is wound thereon will be restricted from the inner ring.
  • a reel hub comprising an inner ring defining a central opening for receiving a spindle, an outer ring upon which a web is to be wound, a plurality of spaced pillars extending radially from said inner ring, a continuous circular beam surrounding said inner ring and supported on said pillars, and spaced radially extending posts joined to said beam at points circumferentially spaced from said pillars and joined to said outer ring affording a resilient support for said outer ring and affording relative movement of the outer ring with respect to the inner ring under the stresses imparted thereto by a web wound on the outer ring and restricting transfer of said stresses to the inner ring.
  • a tape reel comprising a hub, said hub having an inner ring defining a central opening for receiving a spindle,
  • first support means for supporting said resilient beam member in radially spaced relation from said inner ring
  • second support means for supporting said outer ring in radially spaced relation from said resilient beam member, said second support means being spaced circumferentially about said beam from said first support means such that along any radial path between the outer periphery of the outer ring and the opening in the inner ring there is a discontinuity of material on at least one of the radially opposite sides of said beam member such that compressive stresses imparted to said outer ring as a web is wound thereon will be restricted from the inner ring and said means for supporting reel flanges, and
  • said means on said hub for supporting said flanges is a web formed about the periphery of said inner ring, which web has an axial dimension less than that of said inner ring, and which web supports said resilient beam member and said outer ring.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

A reel comprising a hub and axially spaced parallel said flanges, said hub having an inner ring formed with a central opening to receive a spindle, a web supported about the periphery of the inner ring upon which the flanges may be mounted, and an outer compression ring positioned between the flanges and surrounding said web and supported therefrom by resilient means.

Description

United States Patent William H. Edwards St. Paul, Minn.;
Donald M. Lewis, Hudson, Wis. 838,954
July 3, 1969 Jan. 4, 1972 Minnesota Mining and Manufacturing Company St. Paul, Minn.
lnventors Appl. No. Filed Patented Assignee TAPE REEL 5 Claims, 3 Drawing Figs.
US. Cl 242/7l.8 A B65h 75/18 242/7l.8 A,
Int. Cl Field of Search [56] References Cited UNITED STATES PATENTS 3,346,211 10/1967 Gruber t. 242/7 1 .8 A 3,485,456 12/1969 Weyrich 242/71 .8 A
Primary Examiner-Stanley N. Gilreath Assistant Examiner-Milton Gerstein Attorneyl(inney, Alexander, Sell, Steldt & Delahunt ABSTRACT: A reel comprising a hub and axially spaced parallel said flanges, said hub having an inner ring formed with a central opening to receive a spindle, a web supported about the periphery of the inner ring upon which the flanges may he mounted, and an outer compression ring positioned between the flanges and surrounding said web and supported therefrom by resilient means.
TAPE REEL This invention relates to an improved reel structure and in one aspect to a reel structure which will support the heavy loading and permits the use of lighter and less expensive materials.
In the prior art, the reel structures for long lengths or large volumes of strip material, such as magnetic tape or thin films have required considerable strength in the hub sections to prevent them from being compressed or collapsed onto the spindle supporting the reel. The problem is particularly acute when the material being wound is very thin (approaching 0.0005) and is elastic, e.g. web material formed of polyethylene terephthalate. Winding tension from such material is transmitted to the hub as a compressive pressure and is cumulative with each successive wrap causing the reel to collapsed or be crushed and pressed onto the spindle, thus causing the reel flanges to be distorted and move toward each other closing the tape path. This situation can be alleviated by reel hubs constructed according to the present invention.
Other reel structures are known in the art which are formed with grooves or slots affording some flexure of the reel under these compressive forces, however, they do not close uniformly and thus do not retain the uniform circular winding surface as afforded by the structure of the present invention.
The reel hub and reel of the present invention comprises a hub through which a bore is formed to receive the spindle and around which is formed a peripheral web for supporting axially spaced parallel reel flanges. Supported also from the web and positioned between the reel flanges is an outer compression ring upon which the tape is wound, which ring is supported by resilient means from the web. The resilient means may be beamlike members which support the compression loading of the outer ring, however, other resilient rings or members may be positioned between the web and the outer ring to absorb the compression loading.
The above and further advantages of the present invention will be more fully understood after reading the following detailed description which refers to the accompanying drawing wherein:
FIG. 1 is an elevational view of a reel constructed in accordance with the present invention having portions of one flange removed to show the interior parts of the hub;
FIG. 2 is an enlarged detailed view of a portion of the hub; and
FIG. 3 is an enlarged fragmentary sectional view taken along the line 33 of FIG. 1.
Referring now to the drawing there is illustrated in FIG. 1 a reel 5 having axially spaced parallel flanges 6 and 7 supported from a hub generally designated by the reference numeral 8.
The hub 8 comprises an inner ring 9 with an axial thickness substantially equal to the axial thickness of the reel 5 and including a peripherally mounted web 10 for supporting the flanges 6 and 7. The inner ring 9 has a central opening 11 formed to receive and support a driving spindle of a winding mechanism or of a reproducing, projecting or recording apparatus.
The web 10 extends around the outer periphery of the ring 9 and is formed with recessed areas 12 permitting a reduction in material and weight of the hub but is a generally continuous member having opposed axial surfaces to which the reel flanges may be secured by sonic welding such as illustrated by the weldments 13 in FIG. 3. Positioned between and spaced slightly from each inner face of the reel flanges is an outer compressible ring 14 having an outer peripheral surface 15 upon which a strip of material may be convolutely wound. As the strip material is wound around the compressible ring 14 under some tensile loading, the forces increase causing a tremendous radial inward compressive stress to be applied against the ring 14 causing the same to be compressed and to shrink from its normal diameter, i.e., by 0.010 to 0.0l5 inches on a reel with the outer ring having an internal diameter of 4.340 inches and outer diameter of 4.750 002 inches. To avoid this compression force from affecting the inner ring supported on the spindle, a resilient member is positioned around the outer edge of the flange supporting web 10 of the hub 8 to support the compression ring 14. This resilient member in the illustrated embodiment generally comprises a rib structure comprising members joined to the web and to the compressible ring and affording deflection of the members.
The structure illustrated comprises [2 equally spaced radially extending ribs or pillars 17 supporting a continuous resilient beam member 16, and said beam supports the compressible ring 14 from 12 spaced radially positioned ribs or posts 18 positioned between the beam and the inner diameter of the ring and circumferentially spaced from, or positioned on the beam intermediate, each pillar. The structure supports the outer ring 14 as the compression loading is applied to the outer ring upon the winding of a magnetic tape or thin film upon the reel. The compression forces are taken up by flexure of the beam 16 between each of the pillars 17 from the loading transferred thereto by posts 18. The beams or portions of beam member 16 between the pillars are capable of withstanding the compressive stresses applied thereto from the ring 14 and deflect under the compressive stresses. When the stress is relieved the beam will return to its original circular shape.
A suitable material for constructing the reel of the present invention is a glassfilled styrene which is a common material used in the art where it is desired that shrinkage of the polymeric material after the molding operation be reduced. It is understood however that other light materials such as aluminum may be used. The number of pillars or posts used with the resilient structure, as illustrated in the accompanying drawings, may vary in number, however supporting the outer ring from 12 positions affords only a slight change in the outer peripheral surface 15 and is much preferred over a lesser number, for example, three or four posts, where the compressible ring could be caused to crush or fail and form three or four lobes, thus making a substantial change in its configuration.
Having thus disclosed the present invention what is claimed l. A reel hub comprising an inner ring defining a central opening for receiving a spindle,
a resilient beam member positioned around said inner ring,
an outer ring upon which a web is to be wound surrounding said inner ring and said resilient beam member, and first support means for supporting said resilient beam member in radially spaced relation from said inner ring,
second support means for supporting said outer ring in radially spaced relation from said resilient beam member, said second support means being spaced circumferentially about said beam from said first support means such that along any radial path between the outer periphery of the outer ring and the opening in the inner ring there is a discontinuity of material on at least one of the radially opposite sides of said beam member such that compressive stresses imparted to said outer ring as a web is wound thereon will be restricted from the inner ring.
2. A reel hub comprising an inner ring defining a central opening for receiving a spindle, an outer ring upon which a web is to be wound, a plurality of spaced pillars extending radially from said inner ring, a continuous circular beam surrounding said inner ring and supported on said pillars, and spaced radially extending posts joined to said beam at points circumferentially spaced from said pillars and joined to said outer ring affording a resilient support for said outer ring and affording relative movement of the outer ring with respect to the inner ring under the stresses imparted thereto by a web wound on the outer ring and restricting transfer of said stresses to the inner ring.
3. A tape reel comprising a hub, said hub having an inner ring defining a central opening for receiving a spindle,
means secured to said inner ring for supporting axially spaced parallel reel flanges,
a resilient beam member positioned around said inner ring, 7
an outer ring upon which a web is to be wound surrounding said inner ring and said resilient beam member, and
first support means for supporting said resilient beam member in radially spaced relation from said inner ring,
second support means for supporting said outer ring in radially spaced relation from said resilient beam member, said second support means being spaced circumferentially about said beam from said first support means such that along any radial path between the outer periphery of the outer ring and the opening in the inner ring there is a discontinuity of material on at least one of the radially opposite sides of said beam member such that compressive stresses imparted to said outer ring as a web is wound thereon will be restricted from the inner ring and said means for supporting reel flanges, and
LII
spaced parallel flanges secured to said means on said hub for supporting reel flanges such that said reel flanges are positioned on axially opposite sides of said resilient beam member and said outer ring for confining the web as the same is wound on said outer ring.
4. A tape reel according to claim 3 wherein said means on said hub for supporting said flanges is a web formed about the periphery of said inner ring, which web has an axial dimension less than that of said inner ring, and which web supports said resilient beam member and said outer ring.
5. A tape reel according to claim 3 wherein said flanges are axially spaced from said resilient beam member and said outer ring.

Claims (5)

1. A reel hub comprising an inner ring defining a central opening for receiving a spindle, a resilient beam member positioned around said inner ring, an outer ring upon which a web is to be wound surrounding said inner ring and said resilient beam member, and first support means for supporting said resilient beam member in radially spaced relation from said inner ring, second support means for supporting said outer ring in radially spaced relation from said resilient beam member, said second support means being spaced circumferentially about said beam from said first support means such that along any radial path between the outer periphery of the outer ring and the opening in the inner ring there is a discontinuity of material on at least one of the radially opposite sides of said beam member sucH that compressive stresses imparted to said outer ring as a web is wound thereon will be restricted from the inner ring.
2. A reel hub comprising an inner ring defining a central opening for receiving a spindle, an outer ring upon which a web is to be wound, a plurality of spaced pillars extending radially from said inner ring, a continuous circular beam surrounding said inner ring and supported on said pillars, and spaced radially extending posts joined to said beam at points circumferentially spaced from said pillars and joined to said outer ring affording a resilient support for said outer ring and affording relative movement of the outer ring with respect to the inner ring under the stresses imparted thereto by a web wound on the outer ring and restricting transfer of said stresses to the inner ring.
3. A tape reel comprising a hub, said hub having an inner ring defining a central opening for receiving a spindle, means secured to said inner ring for supporting axially spaced parallel reel flanges, a resilient beam member positioned around said inner ring, an outer ring upon which a web is to be wound surrounding said inner ring and said resilient beam member, and first support means for supporting said resilient beam member in radially spaced relation from said inner ring, second support means for supporting said outer ring in radially spaced relation from said resilient beam member, said second support means being spaced circumferentially about said beam from said first support means such that along any radial path between the outer periphery of the outer ring and the opening in the inner ring there is a discontinuity of material on at least one of the radially opposite sides of said beam member such that compressive stresses imparted to said outer ring as a web is wound thereon will be restricted from the inner ring and said means for supporting reel flanges, and spaced parallel flanges secured to said means on said hub for supporting reel flanges such that said reel flanges are positioned on axially opposite sides of said resilient beam member and said outer ring for confining the web as the same is wound on said outer ring.
4. A tape reel according to claim 3 wherein said means on said hub for supporting said flanges is a web formed about the periphery of said inner ring, which web has an axial dimension less than that of said inner ring, and which web supports said resilient beam member and said outer ring.
5. A tape reel according to claim 3 wherein said flanges are axially spaced from said resilient beam member and said outer ring.
US838954A 1969-07-03 1969-07-03 Tape reel Expired - Lifetime US3632053A (en)

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US83895469A 1969-07-03 1969-07-03

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DE (1) DE2033866A1 (en)
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NL (1) NL7009175A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639321A1 (en) * 1975-09-19 1977-03-24 Gefitec Sa REEL FOR MAGNETIC TAPES OF COMPUTERS
DE2854089A1 (en) * 1977-12-16 1979-06-28 Sony Corp REEL
FR2412907A1 (en) * 1977-12-26 1979-07-20 Memorex Corp Magnetic tape reel - has projecting annular edges at centre of each side disc, fitting into grooves in core
DE2918684A1 (en) * 1978-05-08 1979-11-15 Minnesota Mining & Mfg PLASTIC REEL
FR2456989A1 (en) * 1979-05-14 1980-12-12 Posso Patrick PROCESS FOR THE SIMPLIFIED PACKAGING OF A MAGNETIC COMPUTER TAPE AND WINDING CORE FOR CARRYING OUT SAID METHOD
FR2491900A1 (en) * 1980-10-09 1982-04-16 Memorex Corp SPOOL FOR MAGNETIC STRIP OF COMPUTER
FR2542906A1 (en) * 1983-03-16 1984-09-21 Data Packaging Corp Reel hub for computer magnetic tape
US4541587A (en) * 1980-10-30 1985-09-17 Basf Aktiengesellschaft Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs
EP0192765A1 (en) * 1984-09-13 1986-09-03 Dennison Manufacturing Company Tape stripping device in a magnetic tape reel
EP0274182A2 (en) * 1987-01-07 1988-07-13 Shape Inc. Tape cassette
US4923137A (en) * 1988-12-20 1990-05-08 Minnesota Mining And Manufacturing Company Tape reel hub
EP0459368A2 (en) * 1990-05-29 1991-12-04 Goldstar Co. Ltd. Tape reel capable of preventing the tape from being damaged
US5257749A (en) * 1991-02-22 1993-11-02 Basf Magnetics Gmbh Hub for information media
US5375791A (en) * 1993-02-11 1994-12-27 Minnesota Mining And Manufacturing Company Hub aligning rotary chuck
FR2707033A1 (en) * 1993-05-25 1994-12-30 Basf Magnetics Gmbh Device with winding hub for information-carrying tapes
WO1996001472A1 (en) * 1994-07-04 1996-01-18 Basf Magnetics (Holding) Gmbh Winding hub for tape-like information carriers
FR2753296A1 (en) * 1996-09-10 1998-03-13 Posso Sa Disposable bobbin for holding manufactured magnetic tape
EP0882254A1 (en) * 1996-11-15 1998-12-09 Quantum Corporation Flange tape reel having an adaptive section for ensuring uniform stacking of tape
US20040026554A1 (en) * 2001-06-28 2004-02-12 Fuji Photo Film Co., Ltd. Recording tape cartridge
US20090194625A1 (en) * 2008-02-04 2009-08-06 Sonoco Development, Inc. Winding cores for material rolls having high roll strain energy, and method for making same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135653A (en) * 1983-03-03 1984-09-05 Data Packaging Corp Computer tape reel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346211A (en) * 1966-07-05 1967-10-10 Northwest Plastics Inc Computer reels
US3485456A (en) * 1968-01-15 1969-12-23 Amerline Corp Reel structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346211A (en) * 1966-07-05 1967-10-10 Northwest Plastics Inc Computer reels
US3485456A (en) * 1968-01-15 1969-12-23 Amerline Corp Reel structure

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639321A1 (en) * 1975-09-19 1977-03-24 Gefitec Sa REEL FOR MAGNETIC TAPES OF COMPUTERS
DE2854089A1 (en) * 1977-12-16 1979-06-28 Sony Corp REEL
FR2411790A1 (en) * 1977-12-16 1979-07-13 Sony Corp MAGNETIC TAPE COIL, IN PARTICULAR CASSETTE COIL
FR2412907A1 (en) * 1977-12-26 1979-07-20 Memorex Corp Magnetic tape reel - has projecting annular edges at centre of each side disc, fitting into grooves in core
DE2918684A1 (en) * 1978-05-08 1979-11-15 Minnesota Mining & Mfg PLASTIC REEL
US4184650A (en) * 1978-05-08 1980-01-22 Minnesota Mining And Manufacturing Company Plastic tape reel
FR2456989A1 (en) * 1979-05-14 1980-12-12 Posso Patrick PROCESS FOR THE SIMPLIFIED PACKAGING OF A MAGNETIC COMPUTER TAPE AND WINDING CORE FOR CARRYING OUT SAID METHOD
US4296890A (en) * 1979-05-14 1981-10-27 Patrick Posso Process for the simplified packing of a magnetic tape for computer and winding core for carrying out this process
FR2491900A1 (en) * 1980-10-09 1982-04-16 Memorex Corp SPOOL FOR MAGNETIC STRIP OF COMPUTER
US4541587A (en) * 1980-10-30 1985-09-17 Basf Aktiengesellschaft Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs
FR2542906A1 (en) * 1983-03-16 1984-09-21 Data Packaging Corp Reel hub for computer magnetic tape
EP0192765A1 (en) * 1984-09-13 1986-09-03 Dennison Manufacturing Company Tape stripping device in a magnetic tape reel
EP0192765A4 (en) * 1984-09-13 1988-07-04 Dennison Mfg Co Tape stripping device in a magnetic tape reel.
EP0274182A2 (en) * 1987-01-07 1988-07-13 Shape Inc. Tape cassette
EP0274182A3 (en) * 1987-01-07 1989-06-07 Shape Inc. Tape reel assembly and cassette
EP0375322A2 (en) * 1988-12-20 1990-06-27 Minnesota Mining And Manufacturing Company Tape reel hub
US4923137A (en) * 1988-12-20 1990-05-08 Minnesota Mining And Manufacturing Company Tape reel hub
EP0375322A3 (en) * 1988-12-20 1991-02-06 Minnesota Mining And Manufacturing Company Tape reel hub
EP0459368A2 (en) * 1990-05-29 1991-12-04 Goldstar Co. Ltd. Tape reel capable of preventing the tape from being damaged
EP0459368A3 (en) * 1990-05-29 1992-08-05 Goldstar Co. Ltd. Tape reel capable of preventing the tape from being damaged
US6047921A (en) * 1991-02-22 2000-04-11 Emtec Magnetics Gmbh Hub for information media
US5257749A (en) * 1991-02-22 1993-11-02 Basf Magnetics Gmbh Hub for information media
US6102326A (en) * 1991-02-22 2000-08-15 Emtec Magnetics Hub for information media
US5375791A (en) * 1993-02-11 1994-12-27 Minnesota Mining And Manufacturing Company Hub aligning rotary chuck
FR2707033A1 (en) * 1993-05-25 1994-12-30 Basf Magnetics Gmbh Device with winding hub for information-carrying tapes
WO1996001472A1 (en) * 1994-07-04 1996-01-18 Basf Magnetics (Holding) Gmbh Winding hub for tape-like information carriers
AU697857B2 (en) * 1994-07-04 1998-10-22 Emtec Magnetics Gmbh Winding hub for information carriers in tape form
US5873543A (en) * 1994-07-04 1999-02-23 Emtec Magnetics Gmbh Winding hub for information carriers in tape form
FR2753296A1 (en) * 1996-09-10 1998-03-13 Posso Sa Disposable bobbin for holding manufactured magnetic tape
EP0882254A1 (en) * 1996-11-15 1998-12-09 Quantum Corporation Flange tape reel having an adaptive section for ensuring uniform stacking of tape
EP0882254A4 (en) * 1996-11-15 2003-06-04 Quantum Corp Flange tape reel having an adaptive section for ensuring uniform stacking of tape
US20040026554A1 (en) * 2001-06-28 2004-02-12 Fuji Photo Film Co., Ltd. Recording tape cartridge
US6857591B2 (en) * 2001-06-28 2005-02-22 Fuji Photo Film Co., Ltd. Recording tape cartridge
US20090194625A1 (en) * 2008-02-04 2009-08-06 Sonoco Development, Inc. Winding cores for material rolls having high roll strain energy, and method for making same
US9212021B2 (en) 2008-02-04 2015-12-15 Sonoco Development, Inc. Winding cores for material rolls having high roll strain energy, and method for making same

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DE2033866A1 (en) 1971-01-14
NL7009175A (en) 1971-01-05
JPS4913562B1 (en) 1974-04-01
GB1311759A (en) 1973-03-28

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