Tape reel and tape cartridge

Patent metadata

Field	Value
Publication number	US-12068005-B2
Application number	US-202017599749-A
Country	US
Kind code	B2
Filing date	Mar 3, 2020
Priority date	Mar 29, 2019
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A tape reel according to an embodiment of the present technology includes: a cylindrical reel hub that includes an outer periphery portion, a tape being wound on the reel hub. The reel hub is formed of a material in which a deformation amount when a load of 300 N is applied radially inward to an axial center of the outer periphery portion is 0.3 mm or less and a water absorption rate is 0.1% or less.

First claim

The invention claimed is:

1. A tape reel, comprising:
a cylindrical reel hub that includes an outer periphery portion, a tape being wound on the reel hub, wherein
the reel hub is a molded body of a composite material in which an inorganic filler is contained in a polyphenylene sulfide resin and in which a deformation amount when a load of 300 N is applied radially inward to an axial center of the outer periphery portion is 0.165 mm to 0.3 mm and a water absorption rate is 0.1% or less,
wherein the composite material having a flexural modulus of 20 GPa or more,
wherein the inorganic filler is at least one of a glass filler, a mineral filler, or a carbon filler, and
wherein an amount of the inorganic filler ranges from 30 wt % to 65 wt %.

2. The tape reel according to claim 1 , further comprising:
a first flange bonded to one axial end of the reel hub; and
a second flange integrally molded in the other axial end of the reel hub.

3. The tape reel according to claim 1 , wherein the flexural modulus is 20 GPa to 31 GPa.

4. The tape reel according to claim 1 , wherein the flexural modulus is 20 GPa to less than 31 GPa.

5. A tape reel, comprising:
a first flange;
a second flange; and
a cylindrical reel hub that is disposed between the first flange and the second flange and has an elastic modulus higher than those of the first flange and the second flange,
wherein the cylindrical reel hub is a molded body of a composite material in which an inorganic filler is contained in a polyphenylene sulfide resin and in which a deformation amount when a load of 300 N is applied radially inward to an axial center of the outer periphery portion is 0.165 mm to 0.3 mm and a water absorption rate is 0.1% or less,
wherein the composite material having a flexural modulus of 20 GPa or more,
wherein the inorganic filler is at least one of a glass filler, a mineral filler, or a carbon filler, and
wherein an amount of the inorganic filler ranges from 30 wt % to 65 wt %.

6. The tape reel according to claim 5 , wherein
the first flange includes a plurality of first engagement portions provided inside the reel hub,
the second flange includes a plurality of second engagement portions that is disposed inside the reel hub and engages with the plurality of first engagement portions, and
the cylindrical reel hub is sandwiched between the first flange and the second flange coupled to each other via the plurality of first engagement portions and the plurality of second engagement portions.

7. The tape reel according to claim 6 , wherein
the first flange further includes a plurality of first protrusions that fits into one axial end surface of the reel hub.

8. The tape reel according to claim 7 , wherein
the second flange further includes a plurality of second protrusions that fits into the other axial end surface of the reel hub.

9. A tape cartridge, comprising:
a tape reel including a cylindrical reel hub that includes an outer periphery portion, a tape being wound on the reel tape, wherein
the cylindrical reel hub is a molded body of a composite material in which an inorganic filler is contained in a polyphenylene sulfide resin and in which a deformation amount when a load of 300 N is applied radially inward to an axial center of the outer periphery portion is 0.165 mm to 0.3 mm and a water absorption rate is 0.1% or less,
wherein the composite material having a flexural modulus of 20 GPa or more,
wherein the inorganic filler is at least one of a glass filler, a mineral filler, or a carbon filler, and
wherein an amount of the inorganic filler ranges from 30 wt % to 65 wt %.

10. The tape cartridge according to claim 9 , further comprising
a magnetic tape wound on the outer periphery portion of the reel hub, wherein
an average thickness of the magnetic tape is 5.6 μm or less.

11. The tape cartridge according to claim 10 , wherein
the average thickness of the magnetic tape is 5.0 μm or less.

12. The tape cartridge according to claim 11 , wherein
the average thickness of the magnetic tape is 4.6 μm or less.

13. A tape cartridge, comprising:
a tape reel that includes
a first flange,
a second flange, and
a cylindrical reel hub that is disposed between the first flange and the second flange and has an elastic modulus higher than those of the first flange and the second flange, a tape being wound on the reel hub,

wherein the cylindrical reel hub is a molded body of a composite material in which an inorganic filler is contained in a polyphenylene sulfide resin and in which a deformation amount when a load of 300 N is applied radially inward to an axial center of the outer periphery portion is 0.165 mm to 0.3 mm and a water absorption rate is 0.1% or less,
wherein the composite material having a flexural modulus of 20 GPa or more,
wherein the inorganic filler is at least one of a glass filler, a mineral filler, or a carbon filler, and
wherein an amount of the inorganic filler ranges from 30 wt % to 65 wt %.

14. The tape cartridge according to claim 13 , further comprising
a magnetic tape wound on the outer periphery portion of the reel hub, wherein
an average thickness of the magnetic tape is 5.6 μm or less.

15. The tape cartridge according to claim 14 , wherein
the average thickness of the magnetic tape is 5.0 μm or less.

16. The tape cartridge according to claim 15 , wherein
the average thickness of the magnetic tape is 4.6 μm or less.

Assignees

• Sony Group Corp

Inventors

• Kumagai Hiroshi
• Takahashi Taeko
• Iwahashi Yuji

Classifications

• G11B23/107

  using one reel or core, one end of the record carrier coming out of the magazine or cassette · CPC title

• G11B23/037

  Single reels or spools · CPC title

• B65H2701/378

  Recording tape · CPC title

• B65H75/14 Primary

  with two end flanges · CPC title

• G11B23/044 Primary

  Reels or cores; positioning of the reels in the cassette · CPC title