Abstract: A tape cartridge for use with a tape drive having an actuation member includes a cartridge body that is insertable into the tape drive. The cartridge body includes first and second faces that extend at an angle to each other. The first face has a first opening and the second face has a second opening. The cartridge further includes a door movably associated with the cartridge body and being engageable with the actuation member when the cartridge body is inserted into the tape drive. The door is pivotable between a closed position and an open position upon engagement with the actuation member. Furthermore, the door has first and second portions that at least partially cover the first and second openings, respectively, when the door is in the closed position.

Abstract: A recording tape cartridge has a case rotatably accommodating a single reel on which a recording tape is wound, an opening formed in portions of a front surface and a side surface adjacent to a corner portion of the case, and a door opening and closing the opening by rotating. The opening is for pulling-out of a leader member attached to an end portion of the recording tape. The door is structured so as to be able to cover the corner portion of the case including a portion of a top surface and/or a bottom surface when the door closes the opening.

Abstract: A seven-sided housing for an information storage medium, where one of the seven sides is moveable in two planes to allow access to an information storage medium disposed therein. A portable data storage cartridge, which includes an information storage medium disposed in the housing. A method to read information from, and/or write information to, the information storage medium is disposed within the portable data storage cartridge. An information storage and retrieval system, which includes one or more of the portable data storage cartridges. A method to read information from, and/or write information to, an information storage medium disposed in the data storage cartridge. An information storage and retrieval system, which includes a computer useable medium having computer readable program code disposed therein for writing information to and/or retrieving information from, an information storage medium disposed within the portable data storage cartridge.

Abstract: A system of rollers and guides that adjust a wrap angle of tape around a guide in a tape cartridge. The system of rollers is an outer guide and an inner roller connected to a spindle via rigid arms. The tape extends around the reel and around a portion of the outer diameter of the outer guide. The inner roller rolls against the tape pack as the tape is wound or unwound around the reel. As the radius of the tape pack changes, position of the inner roller relative to the reel changes, causing the spindle to rotate. In turn, the rotation of the spindle causes a change in the position of the outer guide relative to the reel. As outer guide moves inwardly or outwardly relative to the reel, the wrap angle of the tape around the outer guide changes.

Abstract: A recording tape cartridge having: a case which accommodates a reel for a recording tape; an opening formed at a corner portion of the case; and a door which has a bent portion formed in a substantial L-shape in plan view, and opens and closes the opening, wherein the plate thickness of the bent portion in a direction in which the door rotates is larger than that of the door, and a stepped portion is formed at the further end side from the bent portion of the door, wherein also the case includes a first abutting portion which abuts the door when it is closed, and second abutting portions which abut the end surface of the bent portion at a door distal-end side thereof, and the inner surface of the bent portion, when the closed door is further deflected in a direction of closing the opening.

Abstract: A tape cartridge includes a case, which is made of a lower case and an upper case, for accommodating a reel wound with a magnetic tape. The lower case includes a bottom surface disposed with two positioning holes formed separately from each other on a straight line orthogonal to a direction in which the tape cartridge is loaded into a drive device. The lower case also includes a front wall disposed with two surfaces for regulating a depth to which the case is loaded in the drive device. The two surfaces are positioned on straight lines that pass along the loading direction through the center of the positioning holes when seen from below. Positioning pins of the drive device are inserted into the positioning holes when regulating protrusions of the drive device abut against the two surfaces to regulate the depth to which the case is loaded.

Abstract: The magnetic tape cassette has a base with an opening for forming a transparent window and a transparent resin-made window member to be installed in said opening. The window member is provided with an engaging unit which is to be fitted into the base at an angle and the base is provided with an engaging portion that is formed at an angle in correspondence to the engaging unit and the window member is installed in the opening by being fitted in at an angle.

Abstract: The recording medium cartridge includes a cartridge case containing a recording medium and a noncontact-type memory having an IC section for storing information and performing signal processing and an antenna section for transmitting and receiving signals. The antenna section of the memory is placed in a region furthest from metallic parts.

Abstract: A data storage cartridge includes a housing having a reel disposed between an upper and a lower portion of the housing, the reel capable of movement within the cartridge housing. The data storage cartridge further includes a locking mechanism, where the locking mechanism selectively restricts movement of the reel within the cartridge housing. The reel may be selectively unlocked and locked to reduce the potential for damage during handling. The locking mechanism may be integrally formed with the cartridge housing, e.g., the locking mechanism is not removed from the cartridge when unlocked. In one example, the locking mechanism may include a cam actuator, where rotation of the cam actuator selectively restricts movement of the reel. The cam may be coaxially aligned with the reel and accessible from an exterior of the cartridge housing.

Abstract: A recording tape cartridge which can prevent positional offset of a case with respect to a cartridge accommodating device. Accompanying operation of loading the cartridge in an arrow A direction into a drive device, a door is moved to a side of opening an opening while an operation projection is engaged by an engagement projection. At this time, a pushing/engaging member of the drive device enters into a cell retention notch, and pushes a push surface and engages with an engagement surface. In this way, at the case, a moment in an arrow E direction around a region of engagement is offset, and the case is prevented from being coming out from the drive device. An inclined surface permits advance and withdrawal of the pushing/engaging member into and from the notch.

Abstract: In a magnetic tape cartridge (1) having a metal plate (25) at the central portion of the bottom surface of a reel hub (21) with a reel gear (24) being defined around its periphery, the metal plate (25) is disposed in a manner such that the outer periphery of the metal plate (25) is positioned under the inner facing surface of the reel gear (24). As a result, occurrence of a sink mark during molding at a portion where the reel gear (24) is formed and deformation of the reel hub (21) due to tape widing tention are prevented.

Abstract: A tape supply-side hub, a tape take-up-side hub and a magnetic tape wound onto the tape supply-side hub are included inside a mainframe case. A leader tape fixed onto the tape take-up-side hub and one end of the magnetic tape are connected via a splicing tape. The other end of the magnetic tape is wound onto the tape supply-side hub, and the magnetic tape and the tape supply-side hub are directly connected with adhesive agents. A wound tape layer wounded onto the tape supply-side hub in the fully wound state is composed of a non-recording layer on the winding leader side composed of a specified amount of the wound tape layer and a recording layer continuing to the non-recording layer. The feeding limit position of the magnetic tape in the tape supply-side hub is set to be in the vicinity of a boundary between the non-recording layer and the recording layer.

Abstract: A method of presenting a data storage diskette to a user is disclosed. The method includes the steps of providing the diskette and promoting that handwritten indicia be deposited directly onto an information field in labeling the diskette. In this regard, the diskette includes a housing defining first and second housing sections, and an exterior portion of at least one of the housing sections integrally forming the information field.

Abstract: An information recording medium of the present invention includes a pair of tape reels around which a magnetic tape is wound, a case main body having first windows and second windows formed to the side walls thereof and rotatably accommodating the pair of tape reels, wherein the first windows cause detection light to enter the inside of the case main body to detect the tape ends of the magnetic tape and the second windows cause the detection light to outgo to the outside of the case main body, a front cover turnably attached to the case main body to open and close a drawing-out port of the magnetic tape; and a reel brake, and the reel brake includes a main body disposed to the case main body so as to slide along a direction in which the main body comes into contact with and separates from the tape reels, and arms formed to the main body as well as slinging the main portion by moving along the direction in which they come into contact with and separate from the tape reels between the first windows and the seco

Abstract: In a recording tape cartridge, a reel has a reel hub around which a magnetic tape is wound. An annular reel gear is formed at an outer surface of a bottom portion of the reel hub. Rotation of the reel is impeded by a braking member engaging with an engaging gear formed at an inner surface of the bottom portion. When a clutch member is pressed by a rotating shaft of a drive device, the clutch member is guided by rotation restricting ribs which are engaged with rotation restricting grooves such that relative rotation is impossible, and the clutch member moves in an axial direction of the reel and cancels engagement of the braking member with the engaging gear. A press operation surface and the rotation restricting grooves are positioned further toward a radial direction inner side than the reel gear.

Abstract: A leader pin attaching device for attaching a leader pin to a pin attachment portion of the leader tape (a device for processing end portion of tape type recording medium) is provided. The device includes a transport suction block for holding a portion of the leader tape by negative pressure with the pin attachment portion of the leader tape being protruded; a clamper mechanical part for engaging the leader pin and a leader pin clip with the pin attachment portion of the leader tape being sandwiched therebetween. The transport suction block holds the leader tape in such manner that the leader tape is allowed to move in machine direction during the engagement of the leader pin and the leader pin clip with the pin attachment portion sandwiched therebetween. With the use of the device, wrinkle formation is prevented when a leader pin is attached to a tape.

Abstract: A media cartridge includes a housing, a tape, and at least two tape position sensor openings in the housing adjacent the information storage tape. The tape position sensor openings are separated by a distance that is less than the height of the tape.

Abstract: A tape guide mechanism in a storage device is disclosed for defining an improved roller guide tape path. A cartridge reel is provided for supplying tape to a take-up reel. Multiple flanged guides are provided located remotely from the cartridge and take-up reels. A non-flanged post guide is provided located proximate to the take-up reel for increasing a length of the tape path and for permitting the flanged guides to be located remotely from the cartridge and take-up reels so that the flanged guides are not located in proximity to the cartridge or take-up reels. An axis of symmetry exists longitudinally about one or two read/write heads. The tape path length is generally symmetrically disposed about this axis of symmetry.

Abstract: A magnetic tape having a lower non-magnetic layer containing non-magnetic powder and a binder, and an upper magnetic layer containing ferromagnetic powder and a binder, formed on a surface of a tape-form non-magnetic support. This magnetic tape has an intermediate binder layer, which is under the upper magnetic layer and has an average dry thickness of 10 to less than 50 nm. The average dry thickness of the upper magnetic layer is 5 to 100 nm, and the squareness ratio of the upper magnetic layer in the lengthwise direction is 0.8 or more. In this magnetic tape, the thickness of the magnetic layer and the fluctuation at the interface between the magnetic layer and the intermediate binder layer under the magnetic layer can be controlled. As a result, the PW50 value of a solitary waveform and modulation noise can be reduced. Thus, the magnetic tape shows excellent C/N characteristics.

Abstract: A cartridge case includes: a tape reel including a hub that is shaped like a bottomed-cylinder and on an outer surface of a base plate of which ring-shaped driven teeth, in whose base part an inclined surface is formed, are disposed; a lower case that has an opening, a ring-shaped contact part and a guide surface, the opening being formed in a center of a base plate of the lower case, the contact part being formed in a protruding state on an inner surface of the base plate so as to surround the opening and having a contact surface that contacts and supports the tape reel at a position on the base plate of the hub outside the driven teeth, and the guide surface, which has a complementary form to the inclined surface of the driven teeth, being formed at an edge of the opening; and an upper case that together with the lower case encloses the tape reel in a rotatable state.

Abstract: An information recording medium which is capable of holding a front cover in its closed state even if a large external force is applied. The information recording medium includes a casing body which has tape reels mounted for winding the magnetic tape, a front wall and a lower wall having an outlet formed for pulling out a magnetic tape, and a cover and a sliding section which open and close the outlet. The front cover is pivotally mounted to the casing body by a pair of support sections, for opening and closing a part of the outlet formed in the front wall of the casing body. The sliding section is slidably mounted to the lower wall of the casing body, for opening and closing a part of the outlet formed in the lower wall of the casing body.

Abstract: A recording tape cartridge which can be loaded into a drive device having a reel on which a recording tape is wound and which is rotatably accommodated in a case, the reel including: a resin-formed main portion which includes a reel hub formed in a tubular shape having a floor, the recording tape being wound around an outer peripheral surface of the reel hub; and a substantially disc-shaped metal plate attached firmly to an outer surface of a floor portion of the reel hub, wherein a gate portion, through which a resin material is introduced at the time of molding the main portion, is provided at a radial direction outer side of the metal plate.

Abstract: In a recording tape cartridge, a reel, at which a magnetic tape is wound around a cylindrical tube portion of a reel hub provided at an axially central portion of the reel, is accommodated within a case so as to be movable in an axial direction between a ceiling plate and a floor plate. A locking member can be set at a restricting position, at which, in a state in which the reel is shifted toward the floor plate, a lock portion is disposed in a gap between a top end portion of the reel and the ceiling plate and the locking member restricts axial direction movement of the reel, and a restriction releasing position, at which the locking member is withdrawn from the restricting position and permits the axial direction movement of the reel.

Abstract: A data storage tape cartridge providing robust interactions with leadering mechanisms of data storage tape drives. In one relevant aspect, a data storage tape cartridge includes improved leader member access area features, such as a docking ramp configured to transition from a first height, to a second height greater than the first.

Abstract: The present invention provides a recording tape cartridge including an engagement portion formed on a hub of a reel; a brake member provided movable along an axial-direction, regulating reel rotation by engaging with the engaging portion and releasing the engagement to allow reel rotation; a component mounting portion formed at a position further at inner-side of the hub; a lock member, mounted at the component mounting portion movable in a radial-direction and provided between the reel and the case to regulate movement of the reel in the axial-direction, which moves away from the reel by being pressed by the brake member to allow movement of the reel, the lock member having a center of gravity provided along a direction in which the brake member initially abuts with and presses the lock member; and a biasing member biasing the lock member in the radial-direction.

Abstract: A method and system for transmitting tape cartridge information using a bi-axial tape cartridge antenna design. A contactless tape cartridge memory device is provided in which the memory device is accessible from multiple surfaces of the cartridge. A single flexible antenna surrounds the tape cartridge memory device. The antenna may be bent to fit within the corner of the tape cartridge, thus providing a parallel antenna surface to two locations on the cartridge, such as the front of the cartridge and the side or bottom of the cartridge. As a result, the memory device in the tape cartridge may be read when the cartridge is being inserted into the tape drive as well as while the cartridge is stored within the tape drive.

Abstract: A recording tape cartridge has: a case rotatably accommodating a single reel with which one end portion of a recording tape is engaged and on which the recording tape is wound, the case having an opening which is formed at a corner portion of the case at a side of loading the case into a drive device, the opening being for pulling-out of a leader member attached to another end portion of the recording tape; and a projecting portion provided at an inner surface of the case in a vicinity of the opening. The projecting portion is provided substantially parallel to a direction of loading the case into the drive device.

Abstract: The recording tape cartridge includes a case body formed by joining together an upper half and a lower half and a tape reel around which a recording tape is wound. The cartridge further includes a lid covering a front side of the case body, and a reel lock member which has a braking claw to be engaged with an engagement tooth provided on a flange of the tape reel and which is adapted to slide with rotation of the lid. Ribs nip the reel lock member so as to perform positional regulation, and a sliding reel lock member urging device urges the reel lock member so as to engage the braking claw with the engagement tooth. A reel lock releasing member urges the reel lock member with rotation of the lid so as to release the engagement.

Abstract: The recording medium cartridge accommodates a recording medium such as a magnetic tape, a optical and/or magnetic disk, or the like in a cartridge body having an upper half and a lower half. A non-contact type memory device storing information, for example, given when producing the cartridge is provided in a reel of at least one of upper and lower flanges of a tape reel or on a surface facing to the tape winding surface of the body in the cartridge accommodating the tape reel wound with the tape, or in a recessed portion formed in at least one of a bottom surface of the lower half and an upper surface of a slider or in the slider in the cartridge having the slider, or in a transparent window of the body. A part of at least one of the upper and lower halves that corresponds to the memory device may be notched. The memory device may be welded together when fitting other members.

Abstract: A magnetic tape cartridge includes a reel around which a magnetic tape is wound, a cartridge case rotatably accommodating the reel, a reel lock for locking rotation of the reel relative to the cartridge case, a resilient member urging the reel lock toward the reel, a release pad for disengaging the reel lock by displacing the reel lock against an urging force of the resilient member, so as to allow rotation of the reel, and a pivot provided on the reel lock at a position facing with and slidably contacting a contact surface of the release pad in a manner allowing rotation of the release pad. The pivot and the contact surface are both made of resin, and the contact surface is made of a resin having a higher hardness than the pivot.

Abstract: In one example of one aspect of the invention, a data storage cartridge is provided. The data storage cartridge includes a housing having at least one opening, a reel rotatably disposed within the housing and accessible through the opening, the reel capable of translating axially, a biasing member for biasing the reel toward the opening, and an absorbing member disposed between the reel and a portion of the housing opposite the opening. In one example, the absorbing member includes a spring constant value of greater than 30 ounces per inch. The absorbing member may be disposed to engage and dampen the motion of the reel when the reel is displaced beyond a desired distance.

Abstract: The present invention provides a recording tape cartridge comprising: a rectangular case having, at a corner portion, an opening for pulling-out of one end of a recording tape, and accommodating the recording tape; and a cover member which opens and closes the opening. The opening is formed by cutting-off the corner portion of the rectangular case, and when the cover member at least opens the opening, the cover member is accommodated within the case.

Abstract: Retention portions that retain a leader member of recording tape are formed inside a case, and a spring member pushes the leader member toward the retention portions. The spring member contacts support point members, and the support point members serve as support points when the spring member deforms. The support point members, which are disposed such that they protrude from side walls of the case, include a height D1 from an inner surface (attachment reference surface) of the side walls. The spring member is bent such that its height at positions contacting the support point members from the attachment reference surface includes a height D2 in a state where the spring member is not attached to the case. Here, D2?D1. When the spring member is attached to the case, the spring member always contacts the support point members. Thus, the pushing force of the spring member is stable.

Abstract: Each lock portion (15) has a front portion (23) including an anchoring pawl (24) and a back portion (25) extending in a direction opposite to the front portion. Therefore, when a slider (14) withdraws, each back portion comes into contact with the inside surface of a back wall (10) of a cassette shell (4) and each lock portion rotates in an unlocking direction. A bottom surface (109) defining each recess between engaging teeth (107) has a central portion which protrudes in a chevron shape. A corner of each protrusion has tapered surfaces (110?) and (110?). An anchoring pawl of each lock portion has a flat surface that comes into contact with one inclined surface (109?) of a chevron-shaped portion of any one of the recesses and one tapered surface (110?) of a protrusion disposed behind the adjacent recess.

Abstract: A tape cartridge includes a leader pin that is fixed to an end of a magnetic tape, a case main body that is composed of an upper case and a lower case, has a tape withdrawal opening through which the magnetic tape can be withdrawn formed in a side surface thereof, and has leader pin storage parts capable of respectively storing an upper end and a lower end of the leader pin formed in the upper case and the lower case in a vicinity of the tape withdrawal opening, and a spring member that is disposed in the case main body, regulates movement of the leader pin by having contact surfaces thereof contact or be near to side surfaces of both the end parts of the leader pin that are stored in the leader pin storage parts, and elastically deforms when the leader pin is withdrawn to stop regulating the movement. The contact surfaces of the spring member are curved towards central parts thereof so as to project towards the side surfaces.

Abstract: The present invention aims to provide a magnetic tape cartridge capable of improving operational precision and efficiency in the process of mounting a release part for unlocking a reel. A magnetic tape cartridge having a release button (part) for unlocking a reel, the release button being mounted in a hub with a cup shape formed on the reel, wherein a bottom portion of the hub has a fitting opening into which the release part fits, and a detection opening with a predetermined positional relationship with the fitting opening; and a reflection (metal) plate attached on a bottom surface of the bottom portion of the hub is viewed from an aperture of the detection opening defined in a top surface of the bottom portion of the hub.

Abstract: A reel which rotates to wind or feed out the recording or recordable tape wound therearound is set in a cartridge. The reel rotation is locked by a reel lock that seizes the reel by being pushed against the reel with a spring and is unlocked by the release pad pushed back against the force of the spring. The release pad has a pivot, of which tip has a partial globe shape head, on the surface facing to the reel lock and the reel lock has a recess on the surface facing to the release pad. The curvature of the recess is larger than that of the pivot. The head of the pivot contacts within the recess. Then the pivot and the recess on reel lock surface can keep uniformly wear out in tape winding or feeding out and the reel lock hardly generates sound noise in the operation.

Abstract: A magnetic tape cartridge made up of a cartridge case composed of an upper and lower cases welded together on the mating surfaces by ultrasonic welding with a plurality of energy directors, and a single reel of magnetic tape rotatalby retained in the case, in which the weld deposits formed by the energy directors may be prevented from sticking out of the mating surfaces. A plurality of energy directors provided on one of the mating surfaces have an elongated shape, and are disposed with the longitudinal direction substantially perpendicular to the direction along the side wall of the upper and lower cases.

Abstract: A tape cassette wherein, on one of the central upper portion of a reel and a pressure mechanism, there is disposed a center pin, on the other, there is formed a contacting flat plate portion with which the center pin can be contacted, one of the center pin and contacting flat plate portion is molded mainly of polyacetal-system synthetic resin, the other is molded mainly of polybutylene-system or polyethylene-system synthetic resin, and inorganic powder is added to at least one of these two kinds of synthetic resin.

Abstract: In a recording tape cartridge, a braking member positioned at a restricting position within a reel hub in a state of abutting an inner surface of a floor plate of a case when the recording tape cartridge is not in use, is held at the restricting position by a top end surface of the braking member abutting a bottom end surface of a clutch member. Upward movement of a reel is restricted. When a release operation portion is pushed by a releasing portion of a drive device and the clutch member rotates, due to cam grooves and cam projections converting torque of the clutch member into axial direction moving force, the braking member, whose held state is cancelled by the bottom end surface sliding along the top end surface, moves to a rising-up permitting position, such that rising-up of the reel within the case is permitted.

Abstract: When a recording tape cartridge is not in use, rotation of a reel, which abuts an annular rib of a floor plate of a case, is locked by a braking member which meshes together from above with an engaging gear, and a gap between the braking member and a spacer wall of a ceiling plate is filled-in by a spacer portion of a spacer member, and movement away from the annular rib is impeded. When, due to operation of a drive device, the spacer portion enters into a relief portion of the braking member which relief portion opens upwardly, the braking member is raised up by an amount corresponding to the gap formed between the braking member and the spacer wall, and meshing of the braking member and the engaging gear is cancelled. The reel thereby becomes able to rotate and to move away from the annular rib.

Abstract: Cassette based systems and methods of hydrogen storage, distribution, and recovery are disclosed. A cassette or other container may contain a hydrogen storage or storing material. Information may be stored in the material and subsequently read or accessed. A probe may be used to interrogate the material. The hydrogen content or other characteristics of the material may be determined based on the interrogation. A hydrogen dispensing unit may contain a depleted cassette acceptor to accept depleted cassettes and a charged cassette dispenser to dispense charged cassettes. The dispensing unit may be implemented in a hydrogen retail store or as a standalone unit. The retail store or the unit may connect to a hydrogen network and implement various business methods, as disclosed herein.

Abstract: The tape cartridge leader includes a smoothing feature that comprises a blind cut out formed in a surface of the tape cartridge leader that faces the hub of the take-up reel when the tape cartridge leader is wound on the hub to compensate for the irregularity generated by the buckling mechanism. The blind cut out consists of a shallow, smooth depression that is positioned to overlay the buckling mechanism. The geometry and size of the blind cut out can be selected from a wide variety of options, with all of these variations having the advantage of providing increased tensile strength for the tape cartridge leader over tape cartridge leaders that use smoothing apertures, since there is no hole formed in the tape cartridge leader.

Abstract: The present magnetic tape cartridge having a data storage medium connected to an integral cleaning tape section is designed to accommodate the length of cleaning tape in a manner that is compatible with existing tape drive systems. In particular, the hub on the supply reel in the single reel magnetic tape cartridge is dimensioned to accept the length of cleaning tape such that the radial position of the End Of Tape hole in the magnetic tape media occurs in the same position as that of existing single reel magnetic tape cartridges that are not equipped with the length of cleaning tape appended to the magnetic tape media. This enables the cleaning tape equipped magnetic tape cartridge to be compatible with existing tape drive systems.

Abstract: A magnetic tape cartridge having an opening provided on one side wall of a cartridge case, a slide door slidably supported by a guide part disposed along the one side wall, the slide door for achieving a shutting-and-opening operation of the opening. A spring member impels the slide door to the shutting direction side, and is provided with a supported part. A spring supporting part retains the supported part. The spring member is retained by the spring supporting part through the supported part and impels the slide door to the shutting direction side.

Abstract: A brake slide assembly for securing a spool inside a data storage tape cartridge housing is disclosed. The brake slide assembly includes at least one brake slide and a flexible member. The brake slide(s) include a locking wedge, a brake button end, and a riser. The locking wedge is configured to selectively engage between the spool and an interior surface of the cartridge. The brake button end is configured to slidingly couple with a brake button of the cartridge. The riser extends between the locking wedge and the brake button end. In this regard, the flexible member is coupled to the brake slide(s).

Abstract: A reel has: a cylindrical hub, which is molded of a resin material, and around which a recording tape is wound; a pair of flanges provided at end portions of the hub, and holding transverse direction end portions of the recording tape; and a ring-shaped member formed of metal and disposed at an inner side of the hub, at least one portion of an outer peripheral surface of the ring-shaped member contacting an inner peripheral surface of the hub. The ring-shaped member of the reel contacts a substantially central portion, in a heightwise direction, of the inner peripheral surface of the hub.

Abstract: A recording medium cartridge that is housed in a library, extracted from the library by a gripping mechanism, and loaded into a drive device includes a case, within which is housed a recording medium, and a memory, in which is stored information relating to the recording medium and that is noncontactingly accessible by reading and writing devices disposed at the drive device and at the gripping mechanism. A communication surface of the memory is disposed within the case at an angle at which the memory is accessible from at least three directions.

Abstract: A recording medium cartridge including a case with two main surfaces which are disposed substantially parallel to each other and side surfaces which connect the main surfaces. An opening is provided on one of the side surfaces which is disposed toward a direction in which the recording medium cartridge is loaded into the drive device. A through hole is provided on one of the main surfaces. A cover member opens and closes the opening and is urged in a closing direction in which the cover member closes the opening. A cam member is mounted on the cover member. When the recording medium cartridge is loaded into the drive device, an engagement pin disposed at the drive device passes through the through hole to move the cover member in an opening direction.

Abstract: A metal plate of a recording tape cartridge is provided with a tapered portion at an outer circumference thereof. In a state in which the metal plate is attached at a fixed-side mold plate of a metal mold for molding a reel hub and a lower flange, a gap is formed between the tapered portion and the fixed-side mold plate. During molding, molding material flows into the gap. Because of this gap, an annular pawl portion is formed at the reel hub, which annular pawl portion integrally joins the metal plate with the reel hub by sandwiching the metal plate via the tapered portion.