Skiving block for mitigating protruding defects from magnetic tape recording media

Patent metadata

Field	Value
Publication number	US-9892753-B2
Application number	US-201715694607-A
Country	US
Kind code	B2
Filing date	Sep 1, 2017
Priority date	Apr 20, 2016
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

An apparatus according to one embodiment includes a first block, a second block, and a drive mechanism configured to cause a magnetic recording tape to move over the blocks. Each of the blocks has a skiving edge along a tape bearing surface thereof. The blocks are positioned or selectively positionable in the apparatus to establish a particular respective wrap angle of the magnetic recording tape approaching the respective skiving edge. None of the blocks have a transducer coupled directly thereto.

First claim

What is claimed is:

1. An apparatus, comprising:
a first block;
a second block,
wherein each of the blocks has a skiving edge along a tape bearing surface thereof; and
a drive mechanism configured to cause a magnetic recording tape to move over the blocks,
wherein the blocks are positioned or selectively positionable in the apparatus to establish a particular respective wrap angle of the magnetic recording tape approaching the respective skiving edge, and
wherein none of the blocks have a transducer coupled directly thereto.

2. An apparatus as recited in claim 1 , wherein each of the wrap angles is at least one degree.

3. An apparatus as recited in claim 1 , wherein one of the wrap angles is larger than the other wrap angle.

4. An apparatus as recited in claim 1 , wherein each of the blocks has an average hardness of at least about 9 Mohs.

5. An apparatus as recited in claim 1 , wherein one of the blocks is comprised of a different material than the other block.

6. An apparatus as recited in claim 5 , wherein the material is selected from a group of materials consisting of: AlTiC, silicon carbide, sapphire, diamond, titanium carbide, boron nitride, zirconium oxide and titanium nitride.

7. An apparatus as recited in claim 1 , wherein the drive mechanism is configured to maintain about a constant tape tension when moving the magnetic recording tape over the blocks.

8. An apparatus as recited in claim 1 , comprising a cleaning device for cleaning the blocks without removal of the blocks from the apparatus.

9. An apparatus as recited in claim 1 , wherein each of the blocks is positionable between a burnishing position for engaging the magnetic recording tape and a retracted position whereby the skiving edge of the respective block in the retracted position is not in contact with the magnetic recording tape.

10. An apparatus as recited in claim 1 , comprising a head with at least one transducer.

11. An apparatus as recited in claim 10 , wherein at least one of the blocks is selectively positionable to selectively lift the magnetic recording tape from the head.

12. A method, comprising:
causing a magnetic recording tape to pass over a skiving edge of a block at a wrap angle of at least one degree for burnishing the magnetic recording tape, wherein the block has an average hardness of at least about 9 Mohs, wherein the block has no transducer coupled directly thereto; and
laterally adjusting the position of the block to introduce lateral movement of the block relative to the magnetic recording tape during movement of the magnetic recording tape over the block for helping prevent formation of scarring on the block.

13. A method as recited in claim 12 , wherein the block comprises at least one of silicon carbide, sapphire, diamond, titanium carbide, boron nitride, zirconium oxide and titanium nitride.

14. A method as recited in claim 12 , wherein laterally adjusting the position of the block includes moving the block in a continuous back and forth motion.

15. A method as recited in claim 12 , wherein laterally adjusting the position of the block includes moving the block in steps.

16. A method, comprising:
causing a magnetic recording tape to pass over a skiving edge of a block at a wrap angle of at least one degree for burnishing the magnetic recording tape,
wherein the block has an average hardness of at least about 9 Mohs,
wherein the block has no transducer coupled directly thereto; and
introducing jitter to the magnetic recording tape during movement of the magnetic recording tape over the block.

17. A method as recited in claim 16 , wherein the jittering is introduced to the magnetic recording tape by manipulating at least one motor.

18. A method as recited in claim 17 , wherein the jitter includes pulses introduced via the at least one motor.

19. A method as recited in claim 16 , wherein the block comprises at least one of silicon carbide, sapphire, diamond, titanium carbide, boron nitride, zirconium oxide and titanium nitride.

20. A method as recited in claim 16 , comprising laterally adjusting the position of the block to introduce lateral movement of the block relative to the magnetic recording tape during movement of the magnetic recording tape over the block for helping prevent formation of scarring on the block.

Assignees

• IBM

Inventors

• Biskeborn Robert G
• Lo Calvin S

Classifications

• G11B15/605 Primary

  without displacing the guiding means · CPC title

• G11B5/00813

  magnetic tapes · CPC title

• G11B20/1886

  with tapes · CPC title

• G11B15/43

  Control or regulation of mechanical tension of record carrier, e.g. tape tension · CPC title

• G11B5/584

  for track following on tapes · CPC title