摘要:
An information recording/reproduction head has a slider (8) having a rail (10) provided with a groove (11), which is coated with a hydrophilic surface treatment agent (12). The rail (10) is provided at a corner thereof with a part having a radius of curvature smaller than the half diameter of a dust cluster multiplied by a predetermined constant. No dust is allowed to adhere to the head when the recording medium is driven to revolve. Dust is prevented from adhering to the surface of the recording medium and entering the gap between the head and the recording medium.
摘要:
A packaging platform for optically coupling one or more optical waveguides of one or more optical components having the optical waveguide to one or more optical fibers is provided with a reference structure portion for the horizontal and vertical positioning of the optical component. The platform is further provided with one or more fiber positioning portions for inserting and holding the optical fiber and positioning the optical fiber at a position where the optical fiber is optically connected to the optical waveguide. The provided packaging platform and an optical module using the platform can simplify all alignment steps for optical coupling, electrical connection and sealing in the coupling of the optical component and the optical fiber.
摘要:
A magnetic disk drive using a magnetic disk covered with a film of liquid lubricant for obviating wear ascribable to the friction and contact of the magnetic disk with a magnetic head is disclosed. The circumferential edge of the disk and the side wall of a casing are spaced from each other by 0.01 mm or less. In addition, the distance between the surface of the disk and a wall facing it, e.g., between the surfaces of adjacent disks or between the surface of each disk and the inner surface of a top wall or that of a bottom wall forming the casing is selected to be 3.00 mm or less.
摘要:
In order to provide a contact type magnetic disk device enabling a high density recording with improved reliability and sufficient robustness against wearing, a magnetic recording disk of the present invention comprises a body coated with a lubricant thin film of one of polybutene, maleic-anhydride-denatured polybutene and maleic-anhydride-denatured poly-alpha-olefin.
摘要:
An opto-electronic hybrid integrated circuit of the present invention satisfy a low-loss optical waveguide function, an optical bench function and a high-frequency electrical wiring function. The circuit includes a substrate such as a silicon substrate, a dielectric optical waveguide part arranged in a recess of the substrate, and an optical device mounting part formed on a protrusion of the substrate. An electrical wiring part is disposed on the dielectric layer. The optical device is mounted on the substrate. An optical sub-module includes the optical device which is possible to mount on the substrate.
摘要:
In order to enhance the rigidity of a magnetic head slider 2 in the seeking direction without increasing its rigidity in the tracking direction, convex parts 4 parallel to the seeking direction are provided on the surface of a supporting spring 3.
摘要:
In a magnetic recording medium, a substrate is made of mica having a cleavage surface, and a magnetic recording layer is formed on the cleavage surface.
摘要:
A ferroelectric thin film (6) is formed on the surface of a support spring (4) for pressing a magnetic head (3) against a magnetic disc (1) so that the magnetic head (3) is in close contact with the magnetic disc (1). When the magnetic head (3) jumps out of the magnetic disc (1), electrostatic attractive force acts between the ferroelectric thin film (6) and the magnetic disc (1) to prevent the jumping of the magnetic head (3). Further, when the magnetic head (3) is excessively pressed against the magnetic disc (1), electrostatic repulsive force acts between the ferroelectric thin film (6) and the magnetic disc (1) to prevent the pressing force from increasing, thereby preventing the magnetic head (3) and the magnetic recording surface of the magnetic disc (1) from being worn or scratched.
摘要:
An improved receiver dryer header portion for a refrigeration circuit is disclosed. The receiver dryer comprises a cylindrical body having an upper opening and a header portion disposed on the upper opening. The header portion includes a cover plate which is formed as step-like structure having a lower flat surface and an upper flat surface. A fluid inlet port is rotatably disposed on the lower flat surface and a fluid outlet port is rotatably disposed on the upper flat surface. This enables the fluid outlet port to rotate 360.degree. and the fluid input port to rotate more than 180.degree. thereby permitting the piping arrangement of the refrigeration circuit to be easily connected and properly sealed.
摘要:
Herein disclosed is an improved magnetic recording medium which comprises a substrate, a magnetic recording layer, if necessary, a protective layer, an adhesion promoting layer and a lubricant layer, respectively applied or deposited on the substrate in the recited order.The magnetic recording medium is characterized in that the difference T.sub.a -T.sub.1) between the specific surface tension T.sub.a of the adhesion promoting layer and the specific surface tension T.sub.1 of the lubricant layer is adjusted to -5 to 30 dyne/cm.The magnetic recording layer according to the present invention is improved in that the lubricant layer is adhered strongly to the adhesion promoting layer so that the lubricant is hardly dissipated at the time of rotation of the magnetic recording medium. Thus the loss in the volume of the lubricant layer decreases. As a result, the properties of the magnetic recording medium such as durability and abrasion resistance are improved.