Abstract: A magnetic tape cartridge reel includes a hub having a first end and a second end configured to receive a magnetic tape to be wound thereon and at least one flange which is attached to at least one of the first end and the second end of the hub, wherein the at least one flange is formed separately from the hub and is made of a flexible material.

Abstract: A single reel with magnetic tape wound thereon is housed in a case. A restraining member, for restricting rotation of the reel by moving toward or away from the reel, is urged in a restraining direction by an urging member. The pushing-up portions of a releasing member are inserted into the through holes bored in the reel gear of the reel 2 so that the lower ends can abut a driving gear. The releasing member moves the restraining member in a releasing direction by moving according to the chucking operation of drive-side rotation drive means. In this manner, reel-rotation restraining means allows rotation of the reel when being used and restricts the rotation when not being used. In this construction, each of the through holes is bored between the tooth edges of the reel gear so that the releasing member can perform a reliable releasing operation.

Abstract: A magnetic tape cartridge includes a cartridge casing and a single reel which is contained in the cartridge casing for rotation. The reel has a reel hub in the form of a cylindrical member which has a bottom wall and is provided with an opening and a stopper gear formed on the bottom wall. A brake member is provided with a brake gear and is movable up and down between an operative position where the brake gear is brought into engagement with the stopper gear to prevent rotation of the reel and a retracted position where the brake gear is disengaged from the stopper gear to permit rotation of the reel. The brake member is normally urged toward the operative position and moved to the retracted position by a pusher member of a tape drive system which acts on the brake member through the opening in the reel hub when the magnetic tape cartridge is loaded in the tape drive system.

Abstract: A magnetic tape cartridge with an improved reel-rotation restraining mechanism is disclosed. The reel-rotation restraining mechanism has a reel locking member, which is movable toward and away from the reel, for restricting rotation thereof; an urging member for urging the reel locking member in a restraining direction; and an releasing member, which is rotatable integrally with the reel, for moving the reel locking member in an unlocking direction by moving according to a chucking operation of a rotation drive mechanism of a drive unit. The releasing member has three leg portions on the vertexes of a triangular plate portion insertable into through holes in the reel. The releasing member is sized so that with part of the releasing member inserted into a center opening of the reel, and two of the three leg portions positioned near the through holes, the remaining one leg portion can be dropped and inserted within the center opening.

Abstract: The present invention aim at providing a magnetic tape cartridge, which can be assembled using an automated products line by enabling the assembling operation of a spring member and a slide door with ease. For attaining these problems, there is provided a magnetic tape cartridge comprising a magnetic tape cartridge comprising; an opening provided on one side wall of a cartridge case, and is used for tape drawing; a slide door slidably supported by a guide part disposed along said one side wall, and said slide door is used for achieving the shutting-and-opening operation of said opening; a spring member for impelling said slide door to the shutting direction side, and is placed on said guide part; and a leading part for leading one end part of said spring member to a spring engaging part provided on said slide door, and is provided at one end part of said spring member.

Abstract: Disclosed herein is a magnetic tape cartridge including a cartridge case. In the cartridge case, a single reel with magnetic tape wound thereon is rotatably housed, and a leader pin coupled with a leading end of the magnetic tape is caught by a pin catching member of a recording-reproducing unit and is inserted into a tape leader opening formed in the cartridge case. The magnetic tape cartridge also includes a pin retaining spring member which elastically engages the leader pin so that the leader pin is detachably retained at a predetermined position within the cartridge case. Furthermore, a wall surface is provided in the cartridge case so that when the leader pin is inserted into the cartridge case, displacement of the pin retaining member due to the engagement of the pin retaining member with the leader pin is regulated within a predetermined range.

Abstract: A magnetic tape cartridge reel includes a hub having a first end and a second end configured to receive a magnetic tape to be wound thereon and at least one flange which is attached to at least one of the first end and the second end of the hub, wherein the at least one flange is formed separately from the hub and is made of a flexible material.

Abstract: A disk cartridge comprising a flat housing and a recording disk medium. The flat housing is constructed of upper and lower metal shells, and the recording disk medium is rotatably enclosed within the housing. The housing is assembled by mechanically linking the circumferential edge portions of the upper and lower shells together.

Abstract: A magnetic disk cartridge including a flexible magnetic disk, a hub, disk-holding protrusions, and an anti slip-out member. The hub has a disk-holding surface on which the central portion of the magnetic disk is held. The disk-holding protrusions are formed on the disk-holding surface of the hub, and are inserted through holes formed in the magnetic disk. The anti slip-out member is used to prevent the magnetic disk from slipping out from the disk-holding protrusions.

Abstract: Disclosed herein is a magnetic tape cartridge comprising a single reel with magnetic tape wound thereon, a cartridge case for rotatably housing the single reel, a leader pin having a tape clamp portion on which the magnetic tape is wound, and a clamp member with a C cross section that has an axial slit. The leader pin is affixed to a leading end of the magnetic tape by elastically fitting the clamp member onto the tape clamp portion of the leader pin. A sheet member for enhancing a coefficient of friction is interposed at least between the magnetic tape and the tape clamp portion.

Abstract: A single-reel magnetic tape cartridge has a cartridge casing and a single reel around which a magnetic tape is wound and which is contained in the cartridge casing for rotation, in which the magnetic tape is fixed at the leading edge thereof to a leader pin employed for extracting the magnetic tape from the cartridge and the flanges at the upper and lower ends of the leader pin are engaged by the lateral drawing force of a latch spring removably held in the tape cartridge casing. Even for cases in which there is a deviation in the insertion position in which leader pin is inserted by the record and playback apparatus, etc. causing the entry path of the leader pin into the cartridge casing to be off track, etc., it is still possible for the leader pin to be inserted into the cartridge casing.

Abstract: A magnetic disk cartridge comprising a magnetic disk medium, a casing for rotatably housing the magnetic disk medium, and dust-removing liners fixed on the inner surfaces of the casing which face both sides of the magnetic disk medium. Each of the liners has an outer circumferential portion that is not fixed on the inner surface of the casing.

Abstract: In a recording disk cartridge, a plurality of flexible recording disk media is housed in a cartridge case, and a rotational member is provided to support the plurality of flexible recording disk media and cause them to rotate in unison within the cartridge case. The cartridge case has an opening to provide access to a first end of the rotational member from outside therethrough. A supporting shaft fitted to a portion on an axis of rotation of the rotational member near a second end thereof is slidable along the axis of rotation of the rotational member. A bearing ball is held between an inner surface of the cartridge case and an end of the supporting shaft protruding from a second-end face of the rotational member. An elastic member is provided between the supporting shaft and the rotational member, to press the rotational member toward the opening of the cartridge case.

Abstract: Generation of metallic dust due to metal-on-metal sliding contact between a case of a magnetic disk cartridge and a housing portion of a PC card type drive apparatus during insertion and ejection of the magnetic disk cartridge into and from the PC card type drive apparatus. A non-metallic coating having a low frictional coefficient and anti-wear properties is provided on surfaces of metal parts of the housing portion against which outer surfaces of the magnetic disk cartridge case slide during insertion and ejection thereof into and from the housing portion.

Abstract: A magnetic disk cartridge comprising a magnetic disk medium, a casing for rotatably housing the magnetic disk medium, and liners mounted on the inner surfaces of the casing that face both sides of the magnetic disk medium. Each liner is provided with a portion protruding toward the magnetic disk medium, and an adhesive portion adjacent to the protruding portion and formed at a position lower than the protruding portion.

Abstract: Disclosed herein is a magnetic tape cartridge comprising a single reel with magnetic tape wound thereon, a cartridge case for rotatably housing the single reel, a leader pin having a tape clamp portion on which the magnetic tape is wound, and a clamp member with a C cross section that has an axial slit. The leader pin is affixed to a leading end of the magnetic tape by elastically fitting the clamp member onto the tape clamp portion of the leader pin. A sheet member for enhancing a coefficient of friction is interposed at least between the magnetic tape and the tape clamp portion.

Abstract: A magnetic disk cartridge including a flexible magnetic disk, a hub, disk-holding protrusions, and an anti slip-out member. The hub has a disk-holding surface on which the central portion of the magnetic disk is held. The disk-holding protrusions are formed on the disk-holding surface of the hub, and are inserted through holes formed in the magnetic disk. The anti slip-out member is used to prevent the magnetic disk from slipping out from the disk-holding protrusions.

Abstract: The present invention aim at providing a magnetic tape cartridge, which can be assembled using an automated products line by enabling the assembling operation of a spring member and a slide door with ease. For attaining these problems, there is provided a magnetic tape cartridge comprising a magnetic tape cartridge comprising; an opening provided on one side wall of a cartridge case, and is used for tape drawing; a slide door slidably supported by a guide part disposed along said one side wall, and said slide door is used for achieving the shutting-and-opening operation of said opening; a spring member for impelling said slide door to the shutting direction side, and is placed on said guide part; and a leading part for leading one end part of said spring member to a spring engaging part provided on said slide door, and is provided at one end part of said spring member.

Abstract: A magnetic disk cartridge including a flexible magnetic disk, a hub, disk-holding protrusions, and an anti slip-out member. The hub has a disk-holding surface on which the central portion of the magnetic disk is held. The disk-holding protrusions are formed on the disk-holding surface of the hub, and are inserted through holes formed in the magnetic disk. The anti slip-out member is used to prevent the magnetic disk from slipping out from the disk-holding protrusions.

Abstract: A magnetic disk cartridge including a flexible magnetic disk, a hub, disk-holding protrusions, and an anti slip-out member. The hub has a disk-holding surface on which the central portion of the magnetic disk is held. The disk-holding protrusions are formed on the disk-holding surface of the hub, and are inserted through holes formed in the magnetic disk. The anti slip-out member is used to prevent the magnetic disk from slipping out from the disk-holding protrusions.