Dynamic magnetic information storage or retrieval – Record medium – In container
Reexamination Certificate
1999-07-28
2001-04-17
Evans, Jefferson (Department: 2652)
Dynamic magnetic information storage or retrieval
Record medium
In container
C360S128000
Reexamination Certificate
active
06219201
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to computer data storage devices. More specifically, the invention relates to a tape cartridge for a computer tape drive.
Major causes of data loss in computers include accidental file deletion, hard-drive malfunctions, viruses and system failures, power surges, theft of computers and natural disasters such as fires. Installing and uninstalling software can also cause data loss.
Loss of data stored in a computer can result in a significant loss of time and money. For a business, any of these causes might result in the loss of client lists, product information, payroll, personnel files, tax records and other vital information. The consequences can be disastrous.
Tape technology offers efficient and cost-effective protection against data loss. Tape drives offer a range of media that allow data on hard drives and servers to be backed up. A snapshot of a full system, including programs and data files, can be captured on a single tape cartridge. Backing up a computer on a regular basis will ensure that vital data is not lost.
A typical tape cartridge includes magnetic tape and one or two reels. A Travan cartridge is a well known type of two-reel cartridge. A “3480/3490” cartridge is a well known type of single reel cartridge.
The tape must not become damaged or degraded. If the tape becomes degraded or damaged, valuable data might be lost forever.
The tape can become damaged or degraded by debris inside the tape cartridge. During storage or use of the tape cartridge, debris such as particles of dust and dirt can enter inside the tape cartridge. Such debris can damage the tape and interfere with the read/write process. During use of the tape cartridge, oxide particles can fall off the tape. These wear particles can also damage the tape and interfere with the read/write process.
Problems with debris will become even greater as storage capacity of the tape is further increased to accommodate the ever-increasing storage capacity of hard drives. The storage capacity of the tape may be increased by increasing bit density. As the bit density is increased, however, the tape becomes more sensitive to wear particles and the other debris inside the cartridge.
There is presently a need to protect magnetic tape against debris. This need will become greater as tape bit density is further increased.
SUMMARY OF THE INVENTION
This need is met by the present invention, which may be regarded as a tape cartridge for a computer tape drive. The cartridge includes a housing; at least one tape reel within the housing; a magnetic tape wound around at least one reel; and a capture material secured to the housing. The capture material has an exposed surface within the housing. The exposed surface is not in contact with the tape. The capture material can capture debris within the housing.
Other aspects and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
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Evans Jefferson
Hewlett--Packard Company
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