摘要:
A magnetic disk drive device that includes a disk-shaped medium with a magnetic film formed on a surface for recording or reproducing information, and a magnetic head for recording on and reproducing information from the disk-shaped medium. The disk-shaped medium has a data recording region and a control signal recording region. The data recording region is impressed to have convex recording regions for recording data and concave guard bands for separating adjacent recording regions. The control signal recording region has impressed concavities and convexities representing tracking marks (for effecting tracking control of the magnetic head), track number indicating marks and track numbers (for identifying the tracks), and clock marks dividing one circumference into equal intervals along a path of angular movement of the magnetic head. The disk-shaped medium has reduced track pitch and increased recording capacity because the concave guard bands can be very narrow without inducing crosstalk, and the tracking marks, track number indicating marks, and clock marks are impressed as concavities and convexities along the path of angular movement of the magnetic head.
摘要:
A magnetic disk drive device that includes a disk-shaped medium with a magnetic film formed on a surface for recording or reproducing information, and a magnetic head for recording on and reproducing information from the disk-shaped medium. The disk-shaped medium has a data recording region and a control signal recording region. The data recording region is impressed to have convex recording regions for recording data and concave guard bands for separating adjacent recording regions. The control signal recording region has impressed concavities and convexities representing tracking marks (for effecting tracking control of the magnetic head), track number indicating marks and track numbers (for identifying the tracks), and clock marks dividing one circumference into equal intervals along a path of angular movement of the magnetic head. The disk-shaped medium has reduced track pitch and increased recording capacity because the concave guard bands can be very narrow without inducing crosstalk, and the tracking marks, track number indicating marks, and clock marks are impressed as concavities and convexities along the path of angular movement of the magnetic head.
摘要:
The present invention is directed to a hard disc drive, in which a floating amount of a floating slider above a discrete type recording medium can be suppressed from being fluctuated to thereby stabilize a reproduced output voltage. The ratio between a maximum wavelength (L.sub.max) of an information pattern (2) of a discrete type recording medium (1) and the length L.sub.SL of a floating slider (3) in the running direction relative to the recording medium (1) is selected so as to satisfy L.sub.SL /L.sub.max >1.
摘要:
An ink tank holding member for holding ink tanks containing ink is made freely attachable and detachable, at the same time, having ink lead-out members for leading out ink from ink supply ports provided for the ink tanks. For this ink tank holding member, gap complementary members are made mountable to complement the difference in shapes of ink tanks to be installed on the holding member. With the structure thus arranged, it becomes possible to use the ink tank holding member for each of the cartridges commonly, hence attempting the common use of parts, at the same time, preventing effectively the ink tanks from being inclined by the provision of the gap complementary members, thus enhancing the reliability of ink supply portion, as well as preventing the degradation of performance that may be caused by erroneous insertion of ink tanks.
摘要:
A liquid supply member for supplying a liquid to a liquid discharge head having a discharge port which discharges a liquid, includes: a first member consisting of a resin material; a second member consisting of a resin material; and a supply path formed by joining the first member and the second member to each other, the supplying path supplying a liquid to the liquid discharge head, wherein at least a part of an internal surface of the supply path is a smooth surface smoothed by melting the resin after being molded.
摘要:
An image forming apparatus has an outline surrounded by a casing. The casing has an opening. The image forming apparatus includes a fixing unit configured to fix an image formed on a recording medium, and a control unit. The fixing unit includes a heating fixing member. The control unit is configured to control an opening degree of the opening based on temperature of a surface of or in the vicinity of the heating fixing member, so as to prevent emission of a substance by an air current to outside of the casing through the opening, during an image forming operation.
摘要:
An air pump is driven to supply air via an air supply tube to a sub tank, by which a predetermined quantity of the air is mixed inside the sub tank via a gas-liquid separation membrane. Next, a carriage is swayed to agitate the ink by using the air mixed inside the sub tank. Then, the air pump is driven to discharge the air inside the sub tank via the gas-liquid separation membrane. In the above-described agitating motions, since the air utilized for the agitation is discharged from an ink tank after agitation processing, it is possible to prevent the air from remaining inside the ink tank to inflate, thereby adversely influencing the pressure relationship with a printing head.
摘要:
A plasma processing apparatus includes a processing chamber, a stage, a dielectric member, a microwave introduction device, an injector, and an electric field shield. The processing chamber has a processing space therein. The stage is provided within the processing chamber. The dielectric member has a through hole and is provided to face the stage. The microwave introduction device is configured to introduce microwave into the processing space via the dielectric member. The injector has at least one through hole and is made of a dielectric material, e.g., a bulk dielectric material. The injector is provided within the dielectric member. The injector and the through hole of the dielectric member form a path for supplying a processing gas into the processing space. The electric field shield encloses the injector.
摘要:
A microwave supply unit 20 of a plasma processing apparatus 11 includes a stub member 51 configured to be extensible from the outer conductor 33 toward the inner conductor 32. The stub member 51 serves as a distance varying device for varying a distance in the radial direction between a part of the outer surface 36 of the inner conductor 32 and a facing member facing the part of the outer surface of the inner conductor 32 in the radial direction, i.e., the cooling plate protrusion 47. The stub member 51 includes a rod-shaped member 52 supported at the outer conductor 33 and configured to be extended in the radial direction; and a screw 53 as a moving distance adjusting member for adjusting a moving distance of the rod-shaped member 52 in the radial direction.
摘要:
A method is provided for manufacturing a liquid supply member including a transmissive member and a transmissive member, one of which having a groove, and configured to supply liquid to a liquid ejection port. The method includes bringing the transmissive member and the absorptive member into contact, with the groove inside; forming a supply passage by radiating laser light, via the transmissive member, from a plurality of first laser light sources disposed along a longitudinal direction of the groove toward a first contact portion at a periphery of the groove to weld the transmissive member and the absorptive member; and radiating laser light, via the transmissive member, from a second laser light source provided in a vicinity of a laser light source at an end of the groove in the longitudinal direction toward a vicinity portion of the absorptive member.