Abstract: An object of the invention is to provide an environmental test apparatus which can directly set an environmental change rate and hardly causes input errors. Change amount information associated with a total change amount and change rate information associated with a change amount per unit time can be input. A target locus of change can be set by using a change amount/change rate setting method of setting the target locus of change based on a combination of change amount information and change rate information. When setting the target locus of change by the change amount/change rate setting method, input of time information is inhibited.

Abstract: An object of the invention is to provide an environmental test apparatus which can directly set an environmental change rate and hardly causes input errors. Change amount information associated with a total change amount and change rate information associated with a change amount per unit time can be input. A target locus of change can be set by using a change amount/change rate setting method of setting the target locus of change based on a combination of change amount information and change rate information. When setting the target locus of change by the change amount/change rate setting method, input of time information is inhibited.

Abstract: A disk magazine according to the present disclosure is a disk magazine equipped with a resin-made disk tray that houses a plurality of disks in a stacked state and a tray holder that houses the disk tray. An opening is provided on one side surface of the tray holder so that the disk tray can be inserted into and extracted from the opening. A sliding member is mounted to a front wall of the disk tray so as to protrude more upward than a top surface of the disk tray. The front wall serves as a side where the disk tray is inserted into the opening. The sliding member is constituted of a resin material different from a resin material that constitutes the disk tray.

Abstract: A disc tray includes a bottom wall including an outer periphery and an inner rib supporter supporting the lowermost disc from below. The bottom wall is thickened from the outer periphery toward the inner rib supporter. The lowermost disc includes a data recording area, an inner rib, and an outer rib. When the lowermost disc is stationary, the outer rib of the lowermost disc and the upper surface of the bottom wall are separated by a gap. When the lowermost disc is inclined in such a manner that part of the outer rib of the lowermost disc comes into contact with the upper surface of the bottom wall, the data recording area of the lowermost disc and the upper surface of the bottom wall are separated by a gap greater than thickness of the outer or inner rib.

Abstract: A disk magazine according to the present disclosure is a disk magazine equipped with a resin-made disk tray that houses a plurality of disks in a stacked state and a tray holder that houses the disk tray. An opening is provided on one side surface of the tray holder so that the disk tray can be inserted into and extracted from the opening. A sliding member is mounted to a front wall of the disk tray so as to protrude more upward than a top surface of the disk tray. The front wall serves as a side where the disk tray is inserted into the opening. The sliding member is constituted of a resin material different from a resin material that constitutes the disk tray.

Abstract: A disc tray includes a bottom wall including an outer periphery and an inner rib supporter supporting the lowermost disc from below. The bottom wall is thickened from the outer periphery toward the inner rib supporter. The lowermost disc includes a data recording area, an inner rib, and an outer rib. When the lowermost disc is stationary, the outer rib of the lowermost disc and the upper surface of the bottom wall are separated by a gap. When the lowermost disc is inclined in such a manner that part of the outer rib of the lowermost disc comes into contact with the upper surface of the bottom wall, the data recording area of the lowermost disc and the upper surface of the bottom wall are separated by a gap greater than thickness of the outer or inner rib.

Abstract: An information recording medium of the present exemplified embodiment is configured by laminating a substrate having a predetermined thickness and a substrate having a predetermined thickness to each other. A film forming region including a recording region, a clamp region and a rib are formed on one surface of the information recording medium. A film forming region including a recording region, a clamp region and a rib are formed on the other surface of the information recording medium. On both surfaces, the components are formed in the order of the rib, the clamp region and the film forming region toward an outer peripheral side from an inner peripheral side.

Abstract: An information recording medium of the present exemplified embodiment is configured by laminating a substrate having a predetermined thickness and a substrate having a predetermined thickness to each other. A film forming region including a recording region, a clamp region and a rib are formed on one surface of the information recording medium. A film forming region including a recording region, a clamp region and a rib are formed on the other surface of the information recording medium. On both surfaces, the components are formed in the order of the rib, the clamp region and the film forming region toward an outer peripheral side from an inner peripheral side.

Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at an angle greater than or equal to 25 degrees and less than or equal to 35 degrees with respect to the non-inclined surface.

Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at an angle greater than or equal to 25 degrees and less than or equal to 35 degrees with respect to the non-inclined surface.

Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at a predetermined angle to the non-inclined surface and is larger than the non-inclined surface in the thin portion.

Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at a predetermined angle to the non-inclined surface and is larger than the non-inclined surface in the thin portion.

Abstract: A case includes a bottom plate in a substantially rectangular shape, a first side plate rising from a border line of the bottom plate, a second side plate rising from a border line facing the border line of the bottom plate, so as to face the first side plate, and a third side plate rising from an edge perpendicular to the border line of the bottom plate. On an edge opposite to the edge of the bottom plate where the third side plate is provided, an entrance for inserting the cartridge is formed of the first and second side plates and the bottom plate. On an inner surface of the first side plate, a first rib having a top face parallel to the inner surface of the first side plate is provided with a height D1 between the inner surface and the border line of the first side plate. On an inner surface of the second side plate, a second rib having a top face parallel to the inner surface of the second side plate is provided so as to face the first rib with a height D2 shorter than the height D1.

Abstract: A case for holding a cartridge for a disc-shaped information medium, comprising a lower half provided on the recording side of the disc-shaped information medium and an upper half provided so as to engage with the lower half with the disc-shaped information medium sandwiched therebetween in order to allow the disc-shaped information medium to be rotatably held, in which an opening window for exposing the recording side of the disc-shaped information medium in its radial direction is formed in the lower half provided for the cartridge, and shutters for opening and closing the opening window are provided between the lower half and the disc-shaped information medium, wherein said case comprises a bottom panel provided so as to be facing the lower half of the cartridge, a plurality of latching members provided to the bottom panel for latching the cartridge, and a release member provided on the bottom panel so as to lift up the lower case of the cartridge in order to release the latching of the cartridge with one

Abstract: A protective material for electronic parts comprises monoalkylated phenol.formaldehyde novolak resin having 6 to 12 carbon atoms in the alkyl group, and a process for the production of electronic parts, which comprises the following steps A to C:A. covering a device side surface of a semiconductor plate on which semiconductor elements and so forth are mounted with a protective film of a protective material comprising monoalkylated phenol.formaldhyde novolak resin having 6 to 12 carbon atoms in the alkyl group;B. finishing the other or backside surface of the semiconductor plate, not covered with the protective film, to reduce the thickness of the plate; andC. removing the protective film with a solvent.

Abstract: A grinding machine adapted for grinding surfaces of thin workpieces comprises a rotating table provided with at least a workpiece holder on which a workpiece to be ground is held, and a plurality of grinding wheels having different grain sizes ranging from coarse to fine, and rotating independently of each other the wheels are disposed above the table and in arrangement so that, as the table rotates, the wheels grind successively the surface of the workpiece to provide a desired total thickness of grind and a reasonable surface finish through one rotation of the table.

Abstract: A grinding machine adapted for grinding surfaces of thin workpieces comprises a rotating table provided with at least a workpiece holder on which a workpiece to be ground is held, and a plurality of grinding wheels having different grain sizes ranging from coarse to fine, and rotating independently of each other. The wheels are disposed above the table and in arrangement so that, as the table rotates, the wheels grind successively the surface of the workpiece to provide a desired total thickness of grind and a reasonable surface finish through one rotation of the table.

Abstract: A semiconductor device with multilayer wirings can be produced with high yield by applying a liquid source for silicate film to a surface of a chemically vapor deposited insulating layer placed on a surface of the semiconductor substrate in order to provide a smoothed surface. After solidification of the liquid source, the substrate is subjected to a controlled etching to leave the same contour as the one of the smoothed surface on the resultant surface. An upper wiring layer is placed on the resultant smoothed surface in contact with a lower wiring layer through the insulating layer thereby decreasing disconnections in the upper wiring layer which could easily be caused by steep edges existing on an insulating surface layer of a conventional device.