Abstract: A processor performs processing which includes inputting a plurality of mathematical formulas in response to operations performed on operation keys, displaying a list of the plurality of inputted mathematical formulas on a display, and displaying, in different display forms, a first mathematical formula which is a mathematical formula currently being inputted and a second mathematical formula which is a mathematical formula previously inputted, when displaying the list of the plurality of mathematical formulas.

Abstract: A disc device includes a plurality of magazines, each having a tray that stores a plurality of discs, a plurality of disc drives that performs recording or reproducing of information on or from the plurality of discs, a picker that draws out the tray from one of the plurality of magazines and that conveys the tray to a position near the plurality of disc drives, and a disc separating and supplying device that, at the position near the plurality of disc drives, holds the plurality of discs stored in the tray, separates at least one of the plurality of discs stored in the tray from a remainder of the plurality of the discs stored in the tray, and supplies the at least one of the plurality of discs stored in the tray to at least one of the plurality of disc drives.

Abstract: A disc device according to the present disclosure includes a plurality of magazines each having a tray that stores a plurality of discs, a plurality of disc drives that performs recording or reproducing of information on or from a disc, respectively, a picker that draws out the magazine tray from one magazine selected from the plurality of magazines and that conveys the magazine tray to a position near the plurality of disc drives, and a disc separating and supplying device that, at the position near the disc drives, holds the plurality of discs stored in the magazine tray, that separates at least one disc from the held plurality of discs, and that supplies the separated disc to the disc drive.

Abstract: A disc device according to the present disclosure includes a plurality of magazines each having a tray that stores a plurality of discs, a plurality of disc drives that performs recording or reproducing of information on or from a disc, respectively, a picker that draws out the magazine tray from one magazine selected from the plurality of magazines and that conveys the magazine tray to a position near the plurality of disc drives, and a disc separating and supplying device that, at the position near the disc drives, holds the plurality of discs stored in the magazine tray, that separates at least one disc from the held plurality of discs, and that supplies the separated disc to the disc drive.

Abstract: A disk (100) having a center hole (100a), the disk (100) being provided with a support-capable structure for making it possible to support a disk (100A) positioned one level above the lowermost part in a stacked state using separation claws (164Ac, 164Bc) protruding radially outward from the center hole (100a).

Abstract: A disc device according to the present invention includes a plurality of magazines each having a tray that stores a plurality of discs, a plurality of disc drives that performs recording or reproducing of information on or from a disc, respectively, a picker that draws out the magazine tray from one magazine selected from the plurality of magazines and that conveys the magazine tray to a position near the plurality of disc drives, and a disc separating and supplying device that, at the position near the disc drives, holds the plurality of discs stored in the magazine tray, that separates at least one disc from the held plurality of discs, and that supplies the separated disc to the disc drive.

Abstract: A disk (100) having a center hole (100a), the disk (100) being provided with a support-capable structure for making it possible to support a disk (100A) positioned one level above the lowermost part in a stacked state using separation claws (164Ac, 164Bc) protruding radially outward from the center hole (100a).

Abstract: A disc drive unit is configured with a plurality of disc drives as one unit. At least one of a pair of opposed disc drives arranged on an identical horizontal plane is provided with a tray support member for supporting a front end of a tray of the other disc drive when the tray is ejected. The tray support member is capable of protruding from the one disc drive and withdrawing into the same.

Abstract: A disc device which takes out a disc stored in a magazine and conveys the disc to any disc drive, in which the magazine comprises a tray which stores a plurality of discs, and a case which has a substantially rectangular parallelepiped shape and which stores the tray. The case has an opening at front face into which the tray can be inserted into or taken out therefrom. The tray has an outer shape being substantially rectangular in planar view. The tray is provided with cut portions formed at corner portions positioned on the back side of the case being cut off. The disc device further comprises a picker which holds the tray and draws out the tray from the case. The picker rotates the tray when the cut portion passes through the opening.

Abstract: A disc device which takes out a disc stored in a magazine and conveys the disc to any disc drive, in which the magazine comprises a tray which stores a plurality of discs, and a case which has a substantially rectangular parallelepiped shape and which stores the tray. The case has an opening at front face into which the tray can be inserted into or taken out therefrom. The tray has an outer shape being substantially rectangular in planar view. The tray is provided with cut portions formed at corner portions positioned on the back side of the case being cut off. The disc device further comprises a picker which holds the tray and draws out the tray from the case. The picker rotates the tray when the cut portion passes through the opening.

Abstract: A disc device which takes out a disc stored in a magazine and conveys the disc to any disc drive, in which the magazine comprises a tray which stores a plurality of discs, and a case which has a substantially rectangular parallelepiped shape and which stores the tray. The case has an opening at front face into which the tray can be inserted into or taken out therefrom. The tray has an outer shape being substantially rectangular in planar view. The tray is provided with cut portions formed at corner portions positioned on the back side of the case being cut off. The disc device further comprises a picker which holds the tray and draws out the tray from the case. The picker rotates the tray when the cut portion passes through the opening.

Abstract: There is provided a disc drive unit configured with a plurality of disc drives as one unit, wherein at least one of a pair of opposed disc drives arranged on an identical horizontal plane is provided with a tray support member for supporting a front end of a tray of the other disc drive when the tray is ejected, the tray support member being capable of protruding from the one disc drive and withdrawing into the same.

Abstract: A disc device which takes out a disc stored in a magazine and conveys the disc to any disc drive, in which the magazine comprises a tray which stores a plurality of discs, and a case which has a substantially rectangular parallelepiped shape and which stores the tray. The case has an opening at front face into which the tray can be inserted into or taken out therefrom. The tray has an outer shape being substantially rectangular in planar view. The tray is provided with cut portions formed at corner portions positioned on the back side of the case being cut off. The disc device further comprises a picker which holds the tray and draws out the tray from the case. The picker rotates the tray when the cut portion passes through the opening.

Abstract: There is provided a disk device having a buffer portion capable of relatively moving at least a rack at the beginning of meshing with a drive gear in an opposite direction to a moving direction of a slide cam member moved by conveyance of a disk, when the disk is conveyed to a replayable position by a disk conveyance mechanism and the slide cam member moves so that the drive gear and the rack are meshed with each other.

Abstract: A disk device is provided with a pair of slide cam members that start movement when a disk is conveyed to a replayable position, and a pair of clamper lifters respectively having clamper support portions supporting a clamper. The clamper lifters are moved in opposite directions to each other in a horizontal direction orthogonal to a thickness direction of the disk device in conjunction with the movement of the pair of slide cam members. They are arranged so that the timings of the start of movement in the opposite directions to each other are different from each other. The clamper support portions have inclined surfaces in contact with an outer peripheral part of the clamper so as to move the clamper in the thickness direction of the disk device in accordance with the movement of the pair of clamper lifters in the opposite directions to each other.

Abstract: A disk device of the invention is provided with a trigger member rotated by being contacted with and pressed by a disk having a different diameter to be conveyed to a replayable position, a slide cam member which drives a disk installment mechanism by being pressed and moved by the trigger member, and a centering member which centers the disk so that the disk faces a turntable at the replayable position. The trigger member has a rotation shaft portion serving as a rotation center, a disk contact portion to be contacted with the disk, and a pressing portion for pressing the slide cam member, and the centering member is provided movably in a disk conveying direction by being contacted with and pressed by the conveyed disk, and has a guide portion for moving the rotation shaft portion of the trigger member in accordance with movement in the disk conveying direction.

Abstract: A disk device is provided with a pair of slide cam members respectively starting movement when a disk is conveyed to a replayable position, and a pair of clamper lifters respectively having clamper support portions supporting clamper, the pair of clamper lifters are moved in opposite directions to each other in a horizontal direction orthogonal to a thickness direction of the disk device in conjunction with the movement of the pair of slide cam members, and formed so that timings to start movement in the opposite directions to each other are different from each other, and the clamper support portions have inclined surfaces being contacted with an outer peripheral part of the clamper in accordance with the movement of the pair of clamper lifters in the opposite directions to each other so as to move the clamper in the thickness direction of the disk device.

Abstract: There is provided a disk device having a buffer portion capable of relatively moving at least a rack at the beginning of meshing with a drive gear in an opposite direction to a moving direction of a slide cam member moved by conveyance of a disk, when the disk is conveyed to a replayable position by a disk conveyance mechanism and the slide cam member moves so that the drive gear and the rack are meshed with each other.

Abstract: A disk cartridge of the present invention comprises a case body (101) having a disk-storage portion and an opening/closing cover (201) having a pair of disk holding members (202) that hold a disk (10) in its inplane direction. The accommodated disk (10) is loaded together with the opening/closing cover (201) into an adapter having compatibility with a large disk cartridge. Thus, information can be, for example, reproduced from the disk (10) in a drive unit designed for a large disk cartridge via the adapter. Moreover, a series of operations can be conducted without touching the disk directly.