摘要:
In order to attain a good contact with a magnetic sheet, a magnetic head with a pair of magnetic gaps has an external configuration and a sliding surface which satisfy formulas of:0.2
摘要:
A magnetic recording and reproduction device having magnetic heads opposing each other across a magnetic disk. The heads have shaped control portions to generate a negative pressure between the magnetic heads and the magnetic disk. Each magnetic head is supported by an elastic member which is structured to be slightly dislocatable by the negative pressure. The magnetic heads are caused by the negative pressure to come in sliding contact with both sides of the magnetic disk, thereby obtaining positive sliding contact with extremely small contact resistance between the magnetic heads and the magnetic disk and achieving a good head contact while minimizing abrasion of the magnetic disk and the magnetic heads. The control portions to generate the negative pressure are formed integrally with the magnetic heads, thus simplifying the structure, reducing the manufacturing steps such as positioning procedures and achieving a reduction in cost.
摘要:
A magnetic sheet control member, for use in a device for recording and reproduction using a magnetic head in sliding contact with a rotary flexible magnetic sheet, to guide the magnetic sheet to the magnetic head by a negative pressure, having upstream-side and downstream-side inclined surfaces disposed respectively at the upstream side and the downstream side with respect to the rotational direction of the magnetic sheet and inclined to become more distant from the free rotary surface plane of the magnetic sheet towards the downstream side, and stabilizing surfaces disposed respectively at the outer side and inner side with respect to the radial direction of the magnetic sheet to connect the upstream-side inclined surface and the downstream-side inclined surface, thereby obtaining a stable head contact over the entire recording area from the innermost side to the outermost side of the magnetic sheet.
摘要:
A magnetic disk control member having a flat opposing surface opposing a rotating magnetic disk that defines a free rotary surface plane and provided protrudingly with a magnetic head, a protrusion for generating a negative pressure disposed at the upstream side with respect to the rotational direction of the magnetic disk, and an inclined surface disposed at an end of the opposing surface at the downstream side with respect to the rotational direction of the magnetic disk and inclined so as to gradually become closer to the free rotary surface plane towards the downstream side with respect to the rotational direction of the magnetic disk. With the magnetic disk control member, the magnetic disk is curved by the negative pressure generated at the downstream side of the protrusion to come in sliding contact with the magnetic head, and gently pushed back by the inclined surface to the free rotary surface plane side to be straightened, thereby eliminating flapping vibrations due to excessive deformation of the magnetic disk and achieving a stable and good head contact while suppressing deformation of the magnetic disk to a minimum.
摘要:
A magnetic head having a control portion provided integrally with an opposing surface located opposing the recording surface of a magnetic disc or a head mount for generating a negative pressure between the control portion and the magnetic disc to attract the magnetic disc towards the magnetic head, thereby generating an adequate and sufficient negative pressure in the vicinity of the magnetic head and achieving a good head touch. This configuration enables compact design of the mechanism and an increased recording area of the magnetic disc compared with the case in which a magnetic head and a negative pressure generation type stabilizing plate to attract the magnetic disc towards the magnetic head are separately disposed, and eliminates the need for procedures for separate positioning of the individual magnetic head and stabilizing plate, thereby achieving a considerable reduction in manufacturing steps and production cost.
摘要:
A magnetic sheet control member, for use in a device for recording and reproduction using a magnetic head in sliding contact with a rotary flexible magnetic sheet, to guide the magnetic sheet to the magnetic head by a negative pressure, having upstream-side and downstream-side inclined surfaces disposed respectively at the upstream side and the downstream side with respect to the rotation direction of the magnetic sheet and inclined to become more distant from the free rotary surface plane of the magnetic sheet towards the downstream side, and stabilizing surfaces disposed respectively at the outer side and inner side with respect to the radial direction of the magnetic sheet to connect the upstream-side inclined surface and the downstream-side inclined surface, thereby obtaining a stable head contact over the entire recording area from the innermost side to the outermost side of the magnetic sheet.
摘要:
There are provided a pattern exposure method, a conductive film producing method, and a conductive film, wherein a photosensitive material is subjected to a proximity exposure through a photomask disposed with a proximity gap of 70 to 200 μm, and thereby is exposed in the mask pattern periodically in the conveying direction to obtain a conductive film. The conductive film has a plurality of conductive portions of first and second conductive thin metal wires and a plurality of opening portions. A side of each thin metal wire has a protrusion extending toward the opening portion from a virtual line representing a designed width of the thin metal wire, and the protruding amount of the protrusion is 1/25 to 1/6 of the designed width.
摘要:
There are provided a pattern exposure method, a conductive film producing method, and a conductive film, wherein a photosensitive material is subjected to a proximity exposure through a photomask disposed with a proximity gap of 70 to 200 μm, and thereby is exposed in the mask pattern periodically in the conveying direction to obtain a conductive film. The conductive film has a plurality of conductive portions of first and second conductive thin metal wires and a plurality of opening portions. A side of each thin metal wire has a protrusion extending toward the opening portion from a virtual line representing a designed width of the thin metal wire, and the protruding amount of the protrusion is 1/25 to 1/6 of the designed width.
摘要:
A magnetic disk comprises an annular resilient magnetic recording mediumm, an outer ring having an outer affixing surface, and an annular frame disposed radially inwardly of the outer ring. The annular frame comprises an annular thrusting surface protruded axially for thrusting the recording medium to exert tension to it, an inner affixing surface inwardly affixed to the recording medium, and a base axially receded from the thrusting surface.
摘要:
A magnetic head having a control portion provided integrally with an opposing surface located opposing the recording surface of a magnetic disc or a head mount for generating a negative pressure between the control portion and the magnetic disc to attract the magnetic disc towards the magnetic head, thereby generating an adequate and sufficient negative pressure in the vicinity of the magnetic head and achieving a good head touch. This configuration enables compact design of the mechanism and an increased recording area of the magnetic disc compared with the case in which a magnetic head and a negative pressure generation type stabilizing plate to attract the magnetic disc towards the magnetic head are separately disposed, and eliminates the need for procedures for separate positioning of the individual magnetic head and stabilizing plate, thereby achieving a considerable reduction in manufacturing steps and production cost.