摘要:
Provided are a magnetic disk substrate and a method of manufacturing the same, wherein the magnetic disk substrate has very few defects present on its surface with an arithmetic mean roughness (Ra) at a level in the vicinity of 0.1 nm and thus is suitable as a substrate for a magnetic disk with high recording density. The magnetic disk glass substrate is such that the arithmetic mean roughness (Ra) of the main surface of the glass substrate measured using an atomic force microscope with a resolution of 256×256 pixels in a 2 μm×2 μm square is 0.12 nm or less and the number of defects detected to have a size of 0.1 μm to 0.6 μm in plan view and a depth of 0.5 nm to 2 nm is less than 10 per 24 cm2, wherein the defects are each detected using a shift in wavelength between incident light and reflected light upon irradiating and scanning helium neon laser light with a wavelength of 632 nm on the main surface of the glass substrate.
摘要:
An electronic apparatus includes a heat sink for mounting a heating element, a cooling fan for supplying an airstream to the heat sink, and a housing for storing the heat sink and the cooling fan. The housing and the heat sink are equipped with a projection engaged with a hole of a flange of the cooling fan, and the cooling fan is sandwiched by the housing and the heat sink.
摘要:
A virtual machine managing method includes: virtual machine list generation step of detecting a plurality of virtual machines deployed on a physical machine; a dependency list generation step of detecting dependencies among the virtual machines deployed on the physical machine; a power-off order generation step of, based on table contents of the virtual machine list table and the dependency list table, generating a power-off order management table which manages a power-off order in which the same virtual machines are sequentially powered off in descending order of dependency, in units of the physical machine; and a target presentation step of, when an instruction for selecting the power-off target physical machine is detected, reading the power-off order corresponding to this power-off target physical machine from the power-off order management table, and visually presenting this read power-off order.
摘要:
A virtual machine managing method includes: a dependence relation list generation step of detecting a dependence relation among virtual machines implemented on a physical machine and generating a dependence relation list, based on a detection result; a target management table generation step of reading, when a selection instruction for selecting a target virtual machine to be halted among the plurality of implemented virtual machines is detected; and a halted target presentation step of reading the virtual machine identification information on all of the virtual machines in dependence relation with the target virtual machine to be halted, and visually presenting the read virtual machine identification information on all of the target virtual machines to be halted.
摘要:
A copper alloy consisting of two or more of Cr, Ti and Zr, and the balance Cu and impurities, in which the relationship between the total number N and the diameter X satisfies the following formula (1). Ag, P, Mg or the like may be included instead of a part of Cu. This copper alloy is obtained by cooling a bloom, a slab, a billet, or a ingot in at least in a temperature range from the bloom, the slab, the billet, or the ingot temperature just after casting to 450° C., at a cooling rate of 0.5° C./s or more. After the cooling, working in a temperature range of 600° C. or lower and further heat treatment of holding for 30 seconds or more in a temperature range of 150 to 750° C. are desirably performed. The working and the heat treatment are most desirably performed for a plurality of times. log N≦0.4742+17.629×exp(−0.1133×X) (1)
摘要:
When a margin paper constituting a margin between pictured formed sheets, on which pictures have been formed, is cut by a cutter, it is received in a casing. The number of times, in which cutting means cuts a number of sheets to avoid overflowing of the margin paper received in the casing, is beforehand set as a set value, and the number of times, in which the cutter cuts a roll paper, is counted. When a count value reaches the set value, a control unit turns the casing so that an upper opening of the casing is directed downward, and causes the margin paper in the casing to be ejected. When a predetermined period of time has elapsed, the casing is again turned to be returned to an original state. The number of times as counted is reset and counting is again performed.
摘要:
A paper feeding device includes a rotational axis with a groove shaped cross section and having a web extending in the longitudinal direction and a flange provided at opposite sides thereof, and a pickup roller having a concave groove to receive the rotational axis. One end of the pickup roller is provided with a pair of engaging pieces that engages with a flange end portion of the rotational axis respectively, and the other end of the pickup roller is provided with a hook that is inserted into an insertion hole provided on the web of the rotational axis. In the paper feeding device, detachment is easy when the pickup roller is to be replaced and there is no increase in the number of parts and manufacturing processes.
摘要:
A vehicular alternator failure determination apparatus is capable of making a failure determination accurately. The apparatus includes a maximum voltage detection part (1) for detecting a maximum voltage of an alternator commutating device which commutates an AC output of the alternator driven by an engine, a minimum voltage detection part (2) for detecting a minimum voltage of the alternator commutating device, a voltage difference calculation part (3) for detecting a difference voltage from outputs of the maximum and minimum voltage detection parts, and a failure determination part (4) which determines that the alternator is in a failure state, when an output of the voltage difference calculation part is equal to or greater than a prescribed voltage.
摘要:
An anti-vibration mount apparatus which suppresses vibration of a structure is disclosed. The apparatus comprises a gas spring which supports the structure, and a controller which controls an internal pressure of the gas spring. The controller comprises a primary chamber which communicates with a pressure source, a secondary chamber which communicates with the gas spring, a back-pressure chamber which communicates with the secondary chamber, a back-pressure control mechanism which has a nozzle communicating with the back-pressure chamber and a flapper facing the nozzle and controls a pressure in the back-pressure chamber via control of exhaust from the back-pressure chamber by changing a gap between the nozzle and the flapper, and a pressure control mechanism which controls a pressure in the secondary chamber via one of gas supply from the primary chamber to the secondary chamber and gas exhaust from the secondary chamber to outside caused in accordance with a pressure difference between the back-pressure chamber and the secondary chamber. The flapper has a tapered portion facing the nozzle, and the nozzle has a bore widened toward an outlet of the nozzle.