摘要:
A workpiece double-disc grinding apparatus including a holder that supports a thin-plate-like workpiece from an outer periphery along a radial direction and is rotatable; a pair of static pressure support members that support the holder from both sides along an axial direction of the rotation thereof in a contactless manner based on a static fluid pressure; and a pair of grinding stones that simultaneously grind both surfaces of a workpiece supported by the holder, in which an interval between the holder and the static pressure support member is not greater than 50 μm, and the static pressure of the fluid that is not lower than 0.3 MPa. As a result, the workpiece double-disc grinding apparatus and a workpiece double-disc grinding method can stabilize a position of the holder, which can be a cause that degrades a nanotopography of the workpiece in the double-disc grinding for the workpiece.
摘要:
A workpiece double-disc grinding apparatus including a holder that supports a thin-plate-like workpiece from an outer periphery along a radial direction and is rotatable; a pair of static pressure support members that support the holder from both sides along an axial direction of the rotation thereof in a contactless manner based on a static fluid pressure; and a pair of grinding stones that simultaneously grind both surfaces of a workpiece supported by the holder, in which an interval between the holder and the static pressure support member is not greater than 50 μm, and the static pressure of the fluid that is not lower than 0.3 MPa. As a result, the workpiece double-disc grinding apparatus and a workpiece double-disc grinding method can stabilize a position of the holder, which can be a cause that degrades a nanotopography of the workpiece in the double-disc grinding for the workpiece.
摘要:
A double-disc grinding apparatus having at least: a rotatable ring-shaped holder for supporting a sheet-like wafer having a notch for indicating a crystal orientation from an outer circumference side along a radial direction, the holder having a protruding portion to be engaged with the crystal-orientation-indicating notch; and a pair of grindstones for simultaneously grinding both surfaces of the wafer supported by the holder, in which the holder is provided with at least one protruding portion separately from the protruding portion to be engaged with the crystal-orientation-indicating notch, and the both surfaces of the wafer are simultaneously ground by the pair of the grindstones while the wafer is supported and rotated with the at least one protruding portion being engaged with a wafer-supporting notch formed on the wafer.
摘要:
A double-disc grinding apparatus having at least: a rotatable ring-shaped holder for supporting a sheet-like wafer having a notch for indicating a crystal orientation from an outer circumference side along a radial direction, the holder having a protruding portion to be engaged with the crystal-orientation-indicating notch; and a pair of grindstones for simultaneously grinding both surfaces of the wafer supported by the holder, in which the holder is provided with at least one protruding portion separately from the protruding portion to be engaged with the crystal-orientation-indicating notch, and the both surfaces of the wafer are simultaneously ground by the pair of the grindstones while the wafer is supported and rotated with the at least one protruding portion being engaged with a wafer-supporting notch formed on the wafer.
摘要:
A secondary battery has a progressively deteriorating SOC in which battery performance deteriorates when the secondary battery is stored, and is charged and discharged by a control device. An information processing device stores a preset first threshold smaller than the progressively deteriorating SOC of the secondary battery and a preset second threshold greater than the progressively deteriorating SOC, and separates the range from the minimum SOC to the maximum SOC of the secondary battery into, at least, two regions by setting the section from the first threshold to the second threshold as a boundary to thereby cause the control device to charge or discharge the secondary battery within any of the above regions.
摘要:
A control device manages a plurality of storage devices so that data to be recorded is redundantly recorded in different storage devices. An error monitoring unit monitors an occurrence of an error in each of the plurality of storage devices to register information indicative of error occurrence conditions in an error information storage unit for each storage device. When the use of one of the plurality of storage devices is stopped, a rebuild controller determines a timing to perform rebuild processing based on past error occurrence conditions in the storage devices other than the one storage device of the plurality of storage devices by referring to information registered in the error information storage unit.
摘要:
A pull-on wear article having a front portion that is adapted to be worn around the front side of a wearer, a crotch portion that is adapted to be worn along the wearer's crotch region, and a rear portion that is adapted to be worn around the wearer's rear side, which is formed into a pants form by bonding lateral side edges of the front portion and lateral side edges of the rear portion, wherein the front portion and the rear portion are each constituted by an outer cover in which an inner layer material and an outer layer material are laminated, the outer cover has plural single layer areas that are formed of the inner layer material or the outer layer material at intervals in the direction of length of the outer cover, and the laminate areas where the inner layer material and outer layer material are laminated have elasticity in the waist-surrounding direction of the outer cover.
摘要:
A storage apparatus includes a plurality of first storage mediums in which data is redundantly stored and a controller. The controller includes a formatting section which performs formatting in each of the plurality of first storage mediums, a detection section which detects a failure that has occurred in the plurality of first storage mediums, a control section which makes the formatting section stop the formatting at the time of the detection of the failure by the detection section and which rebuilds the data stored in the plurality of first storage mediums in which the failure has occurred in a second storage medium other than the plurality of first storage mediums, and a rebuild processing section which rebuilds the data stored in the plurality of first storage mediums in the second storage medium in accordance with instructions from the control section.
摘要:
A label laminate includes a label L1 and a label sheet L2 formed separately from the label L1, and an unprinted surface of the label sheet L2 is laminated to an adhesive layer side of the label L1. Around the outer edge of the label sheet L2, an adhesive layer 12 of the label L1 is exposed and the label laminate is arranged so that, when stuck to an object via the adhesive layer 12, contents printed on the label sheet L2 can be concealed being sandwiched at the object W side.
摘要:
A storage control apparatus manages a plurality of storage devices which belong to an RLU such that data is made redundant between different storage devices. If a first storage device fails, a rebuild controller executes a rebuild process to store the same data as recorded in the first storage device in a spare storage device. When the rebuild controller executing the rebuild process has failed in reading out data from a second storage device, a data recovery controller restarts the first storage device, and reads out data to be stored in the spare storage device from the restarted first storage device.