摘要:
An information recording medium includes a disk information area; a user area including a plurality of sectors; and a spare area including at least one sector which, when at least one of the plurality of sectors included in the user area is a defective sector, is usable instead of the at least one defective sector. The spare area is located radially inward from the user area. A physical sector number of a sector to which a logical sector number “0” is assigned, among the plurality of sectors included in the user area and the at least one sector included in the spare area, is recorded in the disk information area.
摘要:
There are disclosed a high solids content resin composition excellent in solubility in an organic solvent, comprising an acrylic oligomer having a blocked hydroxyl group, a curing agent having a reactivity with a hydroxyl group and a dissociation or curing catalyst, and a high solids content type paint using the resin composition. There are also disclosed a coating process and a baking process comprising coating and baking the resin composition or the paint while rotating a material to be coated at an appropriate speed. The resin composition and the paint of the present invention have substantially no sagging and solvent popping. Further, the thus obtained paint film have improved smoothness, solvent resistance, weather resistance and resistance to scratching.
摘要:
In a diesel engine, a cylinder block has a pump housing integratedly provided for a fuel injection pump unit at the lateral side thereof. A timing transmission case is fixedly secured to the fore portions of the cylinder block and the pump housing. A governor weight of a mechanical governor and a transmission member for transmitting a centrifugal force of the governor weight are supported by a fuel injection camshaft within the pump housing. A governor lever and a governor spring are disposed within the pump housing in such a condition as not entering the timing transmission case.
摘要:
An automatic canceling device for a winker system of an automobile that can effectively reduce the size of the solenoid incorporated and hence the overall size as well as the manufacturing cost of the device is provided. Such an automatic canceling device comprises a case, a winker operating lever pivotably fitted to the case, an expandable engaging section connected to the lever by way of a compression spring, a locking cam unit provided within the case and engaged with the engaging section to hold the lever in a neutral, left or right position, a releasing member provided in abutment with a cam provided on the lever to return the lever to its unlocked position and a solenoid to be energized by a release signal to activate the releasing member.
摘要:
A crankcase blow-by gas breather device and arrangement where the ends of the crankcase are provided with spaces beyond the end supporting walls for the crankshaft, which spaces conduct the blow-by gas directly to a breather chamber for separating at least some of the entrained oil. The breather chamber is connected to the overhead valve chambers which, in turn, are connected to the intake system for recycling the blow-by gases to the engine. In a V-type engine the breather chamber is integrally formed in the bottom wall of the "V".
摘要:
According to one embodiment, a magnetic head includes a write element, a read element, and a heating element disposed between the write element and the read element. When power is applied to the heating element, either the read element or the write element projects beyond a plane of an air-bearing surface (ABS) of the magnetic head, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape. In another embodiment, when power is applied to the heating element, at least one of a portion of the read element and a portion of the write element approaches a magnetic disk, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape.
摘要:
In an information recording medium for recording and reproducing data thereon on a sector-by-sector basis, the recorded data being managed as at least one file by using a file structure, the file structure includes unused space management information for identifying a used region and an unused region. At least one defective region is registered as an unused region in the unused space management information, the at least one defective region being a region on the information recording medium which is incapable of proper reproduction of the recorded data.
摘要:
A method of manufacturing a lapping plate which has abrasive grains fixed in the plate and which is used for lapping of the air bearing surface of a magnetic head. Abrasive grains fixed in the lapping plate are subjected to an abrasive digging process to selectively lap the surface of the lapping plate in the vicinity of the abrasive grains, and the dug abrasive grains are subjected to an equalization process to make their abrasive grain heights equal.
摘要:
According to one embodiment, a magnetic head includes a write element, a read element, and a heating element disposed between the write element and the read element. When power is applied to the heating element, either the read element or the write element projects beyond a plane of an air-bearing surface (ABS) of the magnetic head, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape. In another embodiment, when power is applied to the heating element, at least one of a portion of the read element and a portion of the write element approaches a magnetic disk, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape.
摘要:
A magnetic head suffers mechanical stresses by striking against a magnetic disc surface and dust, so that there are problems such as the reduction of reproduction output due to the mechanical stresses and the reversal of output polarity due to the mechanical stresses. Embodiments in accordance with the present invention relate to a method of testing reliability of reproduction elements of a magnetic head against outside stress. In a first step, a Giant Magnetoresistive (GMR) element on a row bar of the object of inspection, or a GMR element on a slider is measured for the output against external magnetic field. In the next step, prescribed shearing stress is applied with indenter to the edge where the GMR element-formed surface of the row bar or slider and the air-bearing surface are crossed. Then, output of the GMR element is measured again. Lastly, the outputs of the GMR element before and after application of stress are compared. When the amount of degradation is higher than the prescribed standard, the product is regarded as disqualified. Satisfaction of the prescribed standard is regarded as acceptance.