Abstract:
In a magnetic disk apparatus according to the present invention, a slider has a sliding surface (K) and a reflecting surface (M). The height of the reflecting surface (M) from the magnetic disk (1) is greater than that of the sliding surface (K) from the disk (1), when the slider (6) flys above the disk (1), so that there exists a minute difference in level between the sliding surface (K) and the reflecting surface (M). The flying height of the sliding surface (K) of the slider (6) from the magnetic disk is measured. When the magnetic disk (1) is rotated, the slider (6) flys from the disk (1). In this state, reference flying height, i.e., the flying height of the reflecting surface (M) from the magnetic disk (1) is measured by the optical interference process. Then, the minute difference is subtracted from the measured reference flying height to obtain the flying height of the sliding surface (K) of the slider (6) from the magnetic disk (1). According to the invention, even if the minimum flying height of the sliding surface (K) of the slider (6) is shorter than 0.1 micrometer, the measurement can be effected by the optical interference process. In general, moreover, a minute flying height between a fixed datum plane and an object flying above the datum plane can be measured accurately.
Abstract:
Disclosed herein is a magnetic head adjusting device comprising a head retainer for retaining a magnetic head, the head retainer being mounted to a carrier adapted to reciprocate toward a center of a driving shaft for driving a magnetic disc, an azimuth adjusting mechanism for varying a direction of the head retainer with respect to a rotative axis parallel to the driving shaft, and a head attitude adjusting mechanism for letting the head retainer approach to or move away from the magnetic disc and incline relative to the same plane as the magnetic disc. With this arrangement, when a position and attitude of the magnetic head are varied during or after assembling of the device, such variation may be accurately corrected.
Abstract:
A magnet head retaining device, comprising a support member carrying a magnetic head which contacts a magnetic recording medium such as a magnetic card moving in one direction relative therto and at least a pair of support holes provided downstream and upstream to the magnetic head on an imaginary line passing through the magnetic head in parallel to the direction of the motion of the magnetic recording medium and a mounting member having at least a pair of legs inserted through the corresponding support holes and a spring portion for biasing the legs downwards. Each of the legs is provided with a step for restricting the upward motion of the supporting member. By forming the mounting member out of a single plate, the device may have the flexibility required for achieving an intimate contact between the magnetic head and the magnetic medium and the rigidity required for accurately positioning the magnetic head.
Abstract:
The present invention relates to a tape recorder and, more particularly, to a tape recorder having an automatic reverse function. The tape recorder has selecting means (100), a head (14), and a head rotating mechanism (102). When control buttons (12) are operated by a user, the selecting means (100) can select one of the forward and reverse tape transport directions, and the head rotating mechanism (102) can rotate the head (14) to one of the two positions corresponding to the forward and reverse tape transport directions in accordance with a selection by said selecting means, tape contact surface facing the tape.
Abstract:
A magnetic head arm assembly (10) that supports suspensions (36,38,40,42) and head sliders (44) is formed as an integral die cast rigid structure having a pair of C-shaped side channels (12,141 extending from a thick base (56). Bridge elements (16,18) formed between the two channels support the head suspensions and sliders. Apertures (68) in the walls of the channels provide air flow for cooling, and serve to reduce mass thereby enabling faster access to data tracks.
Abstract:
A magnetic head assembly for use in transducing coaction with a flexible rotating magnetic disk, comprises a magnetic head (18) mounted on a pivoted support arm for arcuate movement across the disk. The head has a central transducing gap (32) on a centre rail (38) between symmetrical pairs of grooves (30A, 30B, 34A, 34B) and an offset groove (40) closest to the outboard face (36) of the head. The arrangement provides compensation for skew as the head is moved from the inner to the outer tracks on the disk.
Abstract:
A magnetic head mount assembly for accessing data tracks recorded on a magnetic medium includes a mounting post (10), an arm (16) which supports the post in close-fitting engagement, and a yoke (18) on which printed circuit connections are disposed. An end portion of the post is slotted (28a, 28b) to receive electrical leads (22) for connection to a ferrite magnetic transducer core (24) which forms part of an otherwise ceramic air bearing slider (26) positioned over the slotted end portion of the post. The arm element is preferably of hollow frusto-conical form.
Abstract:
An integrated suspension (50) for a slider (48) in a magnetic storage system (40) has a simplified structure that is relatively easy to manufacture. The novel integrated suspension (50) may be assembled from separate pieces, including a load beam (58), a flexure (60) and a mounting plate (62). The load beam (58) provides rigid structural support of the flexure (60). The flexure (60) includes a flexible member (74) and leads (64) integrally formed thereon. A section of the flexible member (74) is fixedly attached to the load member, and another section having the slider (48) mounted thereon presses against a pivot projection (92) in the load beam for gimbal motions. An interlocking structure is provided to limit the extent of gimbal motions of the flexible member (74), comprising a tab (94) extending from the flexible member (74) into an aperture in the load beam. Alternatively, a tang (122) is formed in the flexible member (112) which is used to form a clip which serves to limit gimbal motions as it interacts with the load beam.
Abstract:
A transducer supporting apparatus (K1-K7) comprising: a transducer (11, 12) which confronts a recording medium (1) and is moved relative to the recording medium (1) in a direction (R) so as to record and reproduce information on the recording medium (1); a slider (21-27) which is coupled with the transducer (11, 12) and includes a projecting member (21a-25; 26a, 26b; 27a, 27b) protruding towards the recording medium (1); a pivotal member (31-33; 35-37) for pivotally supporting the slider (21-27) so as to pivot the slider (21-27) about a pivotal axis (x-axis) substantially parallel to the recording medium (1) and at least not parallel to a contact line (C) between the projecting member (21a-25a; 26a, 26b; 27a, 27b) and the recording medium (1); and a loading member (31-33; 35-37) for depressing the projecting member (21a-25a; 26a, 26b; 27a, 27b) against the recording medium (1); wherein the contact line (C) is oriented in a direction other than the direction (R) of relative movement between the recording medium (1) and the transducer (11, 12).
Abstract:
A head-gimbal assembly for flying a slider in close proximity to the moving surface of a storage medium such as a magnetic disc (16), substantially without the effects of static attitude bias, includes a flexure (32) and a slider (14) that are joined by an adhesive (64). The assembly further includes a spacer (62), encompassed by the adhesive (64), connecting the slider (14) and the flexure (32). The spacer (62) has a shape effective for providing a pivot between the flexure (32) and the slider (14) in a position to allow adhesive joining of them without disturbing any static attitude bias of the flexure (32) so that the slider (14) is adhesively joined to the flexure (32) for flying substantially without the effects of static attitude bias from the flexure (32).