Data cartridge

Details Data cartridge Data cartridge

1996-06-24

1997-09-30

Nguyen, John Q.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Cartridge system

242345, 2423462, 242347, G11B 23087, G11B 2304

Patent

active

056718934

ABSTRACT:
A data cartridge for use for example in an external memory unit for backing up a computer in which it is possible to secure a smooth surface quality of an upper surface of a base plate in base contact areas with which rotating parts and other mechanism parts of the data cartridge make base contact. In the upper surface 3b of an aluminum base plate 3, a plurality of base contact areas TA of rotating parts RP and other mechanism parts MP such as tape reels, a drive roller, a corner roller and a mirror for optical detection of tape ends are partially surface-pressed to form a plurality of recesses 3c having smooth surfaces free of scratches. As a result, smooth rotation of rotating parts mounted on the base plate and making base contact with the smooth surfaces of the recesses 3c and good contact quality of other mechanism parts with respect to the base plate can be secured and high-precision mounting of these rotating parts RP and other mechanism parts MP can be carried out, a stable tape path and smooth transport of the magnetic tape can be obtained, recording and reproduction errors can be prevented and a highly reliable magnetic tape can be produced with a low-cost and simple manufacturing process.

REFERENCES:
patent: 3735940 (1973-05-01), Schwartz

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