Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Reexamination Certificate
1999-03-19
2001-08-21
Miller, Brian E. (Department: 2652)
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
C360S097010
Reexamination Certificate
active
06278574
ABSTRACT:
BACKGROUND OF THE INVENTION
Portable electronic devices for the storage and retrieval of information, such as notebook computers, have become smaller and more lightweight in recent years. As a result of this trend, the use of memory cards has become popular. Memory cards are used as a storage medium for data, and can readily be inserted into and removed from most portable information storage and retrieval devices.
Most memory cards employ semiconductors for the storage of data. These types of cards, however, are relatively expensive and possess relatively low data-storage capacity. These limitations have lead to the development of data storage devices which utilize a magnetic storage medium placed inside a memory-card-type cartridge.
To increase the portability of information storage and retrieval devices, magnetic data storage devices are being produced in increasingly smaller sizes. In particular, thinner designs are continually being sought due to the direct relationship between thickness and portability. Such reductions in size, however, reduce the structural stiffness of the storage device. This reduction in stiffness makes deformation of the device more likely upon the application of external forces, thereby increasing the chances for damage to the device itself or to the information stored in the device. Thus, a need exists for a small, thin magnetic storage device with sufficient structural stiffness to resist externally-applied forces without undergoing significant deformation.
SUMMARY OF THE INVENTION
The present invention is directed to a data storage device comprising an outer casing, a disk-drive motor, a head-drive motor, read/write heads for storing and retrieving data from a magnetic disk medium, and an integrated circuit board for controlling the operation of the device. The motors, heads, and integrated circuit are affixed to a single-piece frame mounted within the casing. The casing is equipped with an opening which facilitates access to the internal components by a data storage cartridge containing the aforementioned magnetic disk medium.
The frame is equipped with two cylindrically-shaped recesses in its surface. The disk-drive and head-drive motors are each mounted in one of these recesses via an attachment lip integrally formed in each recess. Additionally, a bend is formed in the frame near the cartridge-access opening in the casing. The top surface of this bend acts as a guide for the data storage cartridge during its insertion into the data storage device.
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Mukaijima Katsutoshi
Takahashi Shoji
Wakita Maki
Miller Brian E.
Woodcock Washburn Kurtz Mackiewicz & Norris LLP
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