Abstract: This method for clinching a can cover has a small diameter center panel formed from a center panel, ring-shaped reinforcing groove, chuck wall, and curled part in which the ratio of the center panel diameter and can cover diameter is 0.65-0.75. The chuck wall is provided with a first inclined part and a second inclined part that are inclined toward the outside. When a flange tip part of a can body and the curled part of the can cover are superimposed in a virtual horizontal plane, a lower end part of the second inclined part or a second curved part that connects the first inclined part and second inclined part is positioned in a position in a range of an angle of 0°-35° to a virtual horizontal plane passing through the center of the curve of a rounded part of the flange.

Abstract: This method for clinching a can cover has a small diameter center panel formed from a center panel, ring-shaped reinforcing groove, chuck wall, and curled part in which the ratio of the center panel diameter and can cover diameter is 0.65-0.75. The chuck wall is provided with a first inclined part and a second inclined part that are inclined toward the outside. When a flange tip part of a can body and the curled part of the can cover are superimposed in a virtual horizontal plane, a lower end part of the second inclined part or a second curved part that connects the first inclined part and second inclined part is positioned in a position in a range of an angle of 0°-35° to a virtual horizontal plane passing through the center of the curve of a rounded part of the flange.

Abstract: A lid for a beverage can possessing excellent characteristics in pressure resistant strength in which a predetermined pressure requirement is ensured by a simple gauging down. An annular groove portion of the can lid is formed to have such cross-sectional shapes that a panel wall portion is connected to a chuck wall radius portion so that a tangential line at a second contact point is vertical with respect to an axial direction of a center panel portion, while a chuck wall portion is connected to the chuck wall radius portion so that a tangential line at a first contact point is inclined to the radially inner side, and a curved portion with a radius R1 is provided at a height h1 from the lowest point of the chuck wall radius portion and bent to the radially outer side.

Abstract: According to one embodiment, a storage device includes at least one disk rotated by a spindle motor on a base formed of a magnetic material, a head actuator configured to access the disk, and a VCM configured to drive the actuator. A magnetic circuit of the VCM includes a top yoke with a flat plate-shape, a top magnet attached to a surface of the top yoke on the base side, and support portions formed on the base, and configured to support the top yoke, the top yoke being magnetically coupled to the support portions.

Abstract: A lid for a beverage can excellent in pressure resistant strength in which a predetermined pressure requirement is ensured by a simple gauging down. An annular groove portion 10 of the can lid is formed to have such cross-sectional shapes that a panel wall portion 3 is connected to a chuck wall radius portion 4 so that a tangential line at a second contact point e2 is vertical with respect to an axial direction of a center panel portion 1, while a chuck wall portion 5 is connected to the chuck wall radius portion 4 so that a tangential line at a first contact point e1 is inclined (inclined by ?1 in the clockwise direction) to the radially inner side, and a curved portion (hereinafter referred to as “first radius portion 5a”) with a radius R1 is provided at a height h1 from the lowest point of the chuck wall radius portion 4 and bent to the radially outer side.

Abstract: An optical recording medium is provided with a substrate having a land and a groove alternately arranged in a predetermined direction, a data recording region provided on the land and the groove, and an identification mark recording region recorded with a data block identification mark. The identification mark recording region is provided on only one of the land and the groove.

Abstract: An optical recording medium is provided with a substrate having a land and a groove alternately arranged in a predetermined direction, a data recording region provided on the land and the groove, and an identification mark recording region-recorded with a data block identification mark. The identification mark recording region is provided on only one of the land and the groove.

Abstract: There is disclosed a magneto-optical information reproducing apparatus which can perform information reproducing with a low crosstalk level, and the apparatus comprises a biasing electromagnet 19 for generating a reproducing magnetic field, and an MPU 26 for adjusting an intensity of the magnetic field generated by the biasing electromagnet 19 with respect to a land and a groove so that with respect to one of the land and the groove in which reproducing object information is recorded, a level of a crosstalk attributed to the information recorded in the other one of the land and the groove is lowered.

Abstract: A battery pack is detachably provided for a drive main body. When carrying, an interface card and a connector cable are detachably supported and fixed to the drive main body by a holder member, thereby packaging. A power source is supplied from an upper apparatus to a control IC circuit unit of a device via the interface card. Only when both of the power supply from the upper apparatus and the power supply from an external power source unit are detected, the power source from the external power source unit is supplied to a device circuit unit, thereby making the device circuit unit operative.

Abstract: An optical storage device adapted so that a cartridge accommodating an optical storage medium is inserted/ejected with respect to the device. The device includes a drive base, a cartridge holder mounted on the drive base for receiving the cartridge, a first carriage mounted on the drive base so as to be movable in a first direction, a first drive mechanism for moving the first carriage, and an optical head mounted on the first carriage. The device further includes a second carriage mounted on the cartridge holder so as to be movable in the first direction, a second drive mechanism for moving the second carriage, a magnetic head assembly mounted on the second carriage and having a magnetic head, and a holding mechanism for selectively holding the magnetic head in its lifted condition above the optical storage medium.

Abstract: A battery pack is detachably provided for a drive main body. When carrying, an interface card and a connector cable are detachably supported and fixed to the drive main body by a holder member, thereby packaging. A power source is supplied from an upper apparatus to a control IC circuit unit of a device via the interface card. Only when both of the power supply from the upper apparatus and the power supply from an external power source unit are detected, the power source from the external power source unit is supplied to a device circuit unit, thereby making the device circuit unit operative.

Abstract: An information storage device having a mechanism for automatically detecting a misalignment between a magnetic head and an optical head and correcting the misalignment. The information storage device includes a carriage, an optical head mounted on the carriage and having an objective lens and an actuator for moving the objective lens, a first driving mechanism for moving the carriage in a first direction, and a magnetic head assembly mounted on the carriage and having a magnetic head. The information storage device further includes a light emitting element mounted on the optical head and a photodetector mounted on the magnetic head assembly for detecting light emitted from the light emitting element. A misalignment between the optical head and the magnetic head is detected by using the photodetector and the light emitted from the light emitting element.

Abstract: An optical storage device adapted so that a cartridge accommodating an optical storage medium is inserted/ejected with respect to the device. The device includes a drive base, a cartridge holder mounted on the drive base for receiving the cartridge, a first carriage mounted on the drive base so as to be movable in a first direction, a first drive mechanism for moving the first carriage, and an optical head mounted on the first carriage. The device further includes a second carriage mounted on the cartridge holder so as to be movable in the first direction, a second drive mechanism for moving the second carriage, a magnetic head assembly mounted on the second carriage and having a magnetic head, and a holding mechanism for selectively holding the magnetic head in its lifted condition above the optical storage medium.

Abstract: An optical storage device adapted so that a cartridge accommodating an optical storage medium is inserted/ejected with respect to the device. The device includes a drive base, a cartridge holder mounted on the drive base for receiving the cartridge, a first carriage mounted on the drive base so as to be movable in a first direction, a first drive mechanism for moving the first carriage, and an optical head mounted on the first carriage. The device further includes a second carriage mounted on the cartridge holder so as to be movable in the first direction, a second drive mechanism for moving the second carriage, a magnetic head assembly mounted on the second carriage and having a magnetic head, and a holding mechanism for selectively holding the magnetic head in its lifted condition above the optical storage medium.

Abstract: An optical information storage device for directing an incident light beam onto a recording medium having a recording surface composed of lands and grooves as tracks and detecting a reproduced signal from a reflected light beam from the recording medium. The optical information storage device includes a phase plate provided in an optical path of the reflected light beam so as to be tiltable between a first position where the phase plate gives to the reflected light beam a first phase compensation amount required for detection of signals from the lands and a second position where the phase plate gives to the reflected light beam a second phase compensation amount required for detection of signals from the grooves; and a drive mechanism for tilting the phase plate. Examples of the drive mechanism include a solenoid, DC motor, and voice coil motor.

Abstract: A disk drive adapted to accept and eject a disk cartridge accommodating a disk includes a carriage movable in a radial direction of the disk, a magnetic head assembly mounted on the carriage and having a magnetic head, and a cartridge ejecting mechanism for ejecting the disk cartridge from the disk drive. The disk drive further includes a magnetic head lifter pivotally movable between a first position where the magnetic head lifter is engaged with the magnetic head assembly to lift the magnetic head from the disk when the disk cartridge is not inserted in the disk drive and a second position where the magnetic head lifter is pushed by the disk cartridge to gradually disengage from the magnetic head assembly and allow contact of the magnetic head with the disk when the disk cartridge is inserted into the disk drive.

Abstract: A disk drive adapted to accept and eject a disk cartridge accommodating a disk includes a carriage movable in a radial direction of the disk, a magnetic head assembly mounted on the carriage and having a magnetic head, and a cartridge ejecting mechanism for ejecting the disk cartridge from the disk drive. The disk drive further includes a magnetic head lifter pivotally movable between a first position where the magnetic head lifter is engaged with the magnetic head assembly to lift the magnetic head from the disk when the disk cartridge is not inserted in the disk drive and a second position where the magnetic head lifter is pushed by the disk cartridge to gradually disengage from the magnetic head assembly and allow contact of the magnetic head with the disk when the disk cartridge is inserted into the disk drive.

Abstract: A battery pack is detachably provided for a drive main body. When carrying, an interface card and a connector cable are detachably supported and fixed to the drive main body by a holder member, thereby packaging. A power source is supplied from an upper apparatus to a control IC circuit unit of a device via the interface card. Only when both of the power supply from the upper apparatus and the power supply from an external power source unit are detected, the power source from the external power source unit is supplied to a device circuit unit, thereby making the device circuit unit operative.

Abstract: An optical storage device adapted so that a cartridge accommodating an optical storage medium is inserted/ejected with respect to the device. The device includes a drive base, a cartridge holder mounted on the drive base for receiving the cartridge, a first carriage mounted on the drive base so as to be movable in a first direction, a first drive mechanism for moving the first carriage, and an optical head mounted on the first carriage. The device further includes a second carriage mounted on the cartridge holder so as to be movable in the first direction, a second drive mechanism for moving the second carriage, a magnetic head assembly mounted on the second carriage and having a magnetic head, and a holding mechanism for selectively holding the magnetic head in its lifted condition above the optical storage medium.

Abstract: An optical information storage apparatus is constructed to include a light source, a polarization beam splitter reflecting a light beam emitted from the light source and irradiating a reflected light beam on a recording surface of a recording medium, a first part for eliminating a coma aberration which is generated due to a light beam which is reflected by the recording surface and passes through the polarization beam splitter, a second part for eliminating an astigmatism which is generated by the polarization beam splitter and the first part, and a third part for generating an astigmatism.