摘要:
In an apparatus for performing heating treatment of a structure composed of a substrate and a structure arranged on the front surface of the substrate, the latter structure having thermal capacity smaller than that of the substrate, heaters are arranged to be opposed to the front surface and the back surface of the substrate. A cooling body is arranged at a position opposed to the back surface of the substrate to sandwich the heater of the back surface between the cooling body and the substrate.
摘要:
A jig for holding and conveyance having a weak-adherence adhesive pattern on a plate surface on which a printed circuit board having a conductive portion and a non-conductive portion on the surface of an insulating substrate is placed and held. The weak-adherence adhesive pattern is formed by being restricted to a position corresponding to non-conductive portion. A jig for holding and conveyance is also disclosed which has a fluorine-based resin layer on a plate surface on which a printed circuit board having a conductive pattern on the surface of an insulating substrate is placed and held. On the fluorine-based resin layer, the printed circuit board is held so that the conductor pattern surface of the printed circuit board is approximately parallel to the plate surface. A jig for holding and conveyance can be provided which is capable of reducing manufacturing defects in a step of connecting electronic components or the like on the surface of a thin printed circuit board or in a step of manufacturing the printed circuit board, and which is capable of low-cost production.
摘要:
A disk drive includes a case which contains a disk-shaped recording medium, drive motor, head, and head actuator. The drive motor supports and rotates the recording medium. The head processes information for the recording medium. The head actuator supports the head for movement and moves the head with respect to the recording medium. A control circuit board is mounted to the outer surface of the case. The control circuit board has a plurality of connector pads for connection with external equipment. The connector pads are arranged side by side and exposed on the outer surface of the control circuit board. The connector pads are positioned on a side of the control circuit board adjacent the head actuator.
摘要:
A disk drive includes a casing which houses a disk-shaped recording medium, a drive motor which holds and rotates the recording medium, a head which performs read/write operations, a head actuator movably supporting the head to move the head relative to the recording medium, and a board unit connected to the head actuator. The board unit has a board main body arranged on the inner surface of the casing and at least one capacitor, mounted on the board main body for supplying power to perform a retracting operation for permitting the head actuator to move the head to a retracted position.
摘要:
On the occasion of producing an image display apparatus, in order to suppress the bend and breakage of a substrate by uniformly heating the substrate which constructs a chamber which contains the image display apparatus, a plurality of heaters are located in opposition to both sides of the substrate in a vacuum chamber, which are further surrounded by a heat reflecting member, a partitioning member is located between end faces of the substrate and the heat reflecting member, and the substrate is heated.
摘要:
There are provided a silicon wafer for epitaxial growth wherein a void type defect is not exposed on the surface where an epitaxial layer is grown, and a method for producing an epitaxial wafer comprising measuring the number of the void type defects exposed on the surface of a silicon wafer and/or the number of the void type defects which exist in the part to the depth of at least 10 nm from the surface of the silicon wafer, choosing the silicon wafer wherein the number of these void type defects is smaller than the predetermined value, and growing an epitaxial layer on the surface of the chosen silicon wafer. Thereby, there can be provided a silicon wafer for epitaxial growth wherein generation of SF is reduced and epitaxial wafer, and a method for producing it.
摘要:
In a data recording system used for a magnetic disk drive, a write amplifier feeds a write head with a recording current that corresponds to the data to be recorded on the disk. A recording current controller selects a current value to be fed to the write head from the write amplifier according to the recording pattern detected by a pattern detection circuit. Thus, an effective recording track width can be selected without relying on the recording wavelength of the data to be recorded. Therefore, the influence of the cross talk from adjacently located tracks can be effectively reduced without unnecessarily reducing the recording track width.
摘要:
A horizontal full automatic centrifugal fluidizing barrel processing apparatus which does not damage working environment and offers superior working efficiency. When two disk members are rotated together with a revolutionary shaft, a planetary moving mechanism provided in one of the disk members revolves rotary shafts around the revolutionary shaft and rotates the rotary shafts on their axes. Rotary pinching mechanisms installed in the rotary shafts (a part of a barrel pinching mechanism) pinch and rotate airtight cylindrical barrels. Hydraulic cylinders (the remainder of the barrel pinching mechanism) actuate the rotary pinching mechanisms on the side of one of the disk members to release the pinch of the barrels. A barrel handling mechanism 10 carries a released barrel out of the apparatus and set an untreated barrel.
摘要:
A magnetic medium for horizontal magnetization recording which comprises a non-magnetic substrate and a magnetic recording film formed on at least one side of the substrate, is described. The magnetic recording film consists essentially of an amorphous Co-Cr alloy containing from 5 to 15 atomic percent of oxygen atoms. A method for making the above type of medium is also described in which the magnetic film is vapor deposited under conditions of a partial pressure of oxygen gas of 1.times.10.sup.-3 to 3.times.10.sup.-3 Torr., and a sputtering rate of from 0.05 to 0.15 .mu.m/minute.
摘要:
Described herein is a method for producing a quartz glass crucible, including the steps of: preparing a crucible base material that is made of quartz glass and has a crucible shape; producing a synthetic quartz glass material by the direct process or the soot process; processing the synthetic quartz glass material into a crucible shape without pulverizing the synthetic quartz glass material; and welding the synthetic quartz glass material processed into the crucible shape to the inner surface of the crucible base material. As a result, there are provided a quartz glass crucible that avoids generation of dislocation in a silicon single crystal, the generation of dislocation caused by the crucible itself, at the time of production of a silicon single crystal and has high heat resistance, a method for producing the quartz glass crucible, and a method for producing a silicon single crystal, the method using such a quartz glass crucible.