Abstract: A tape cassette which can maintain stably the accuracy of the reference planes for determining the height of the tape cassette and which allows enhancement in accuracy of positioning, height positioning reference planes being provided inwardly a specified distance apart from an outside casing surface of the tape cassette such that the reference plane for determining the height of the tape cassette relative to the apparatus is not provided on the outside casing surface of the tape cassette, thus the reference planes remain free from contact with any mechanism for loading the tape cassette or with any foreign matter in transport, thus the reference planes can be kept free from damage.

Abstract: An apparatus, such as a cassette or a cartridge, for storing a continuous tape medium in reeled form has first and second hubs contained in a housing having a base, with a continuous tape medium wound on said hubs, with a portion of the tape medium wound on one hub and another portion wound on the other hub. The hubs are respectively mounted on axles allowing rotation of the hubs. The axles are rotatably mounted in a platform which is slideable within an opening in the base of the housing so as to allow the axles to exhibit a translational movement, in tandem, in a direction parallel to the base as the tape medium is transferred between the hubs. As the diameter of reeled tape increases on one of the hubs due to the tape transfer, the platform, and the axles and the hubs, will move in a direction toward the housing sidewall closest to the hub having the smaller amount of tape reeled thereon, thereby increasing the spacing between the other hub and the other sidewall to accommodate the increasing diameter.

Abstract: A film magazine comprising a housing having a film egress slot and a film ingress slot, a film supply spool rotatably supported within the housing proximate the film egress slot, and a film take-up spool rotatably supported within the housing proximate the film ingress slot, is characterized in that the housing has a pair of opposite ends that are spaced apart a maximum dimension of the housing, and the film egress and film ingress slots are positioned at the respective ends of the housing in order that a filmstrip connected through the film egress and film ingress slots to the film supply and film take-up spools must longitudinally extend between the film supply and film take-up spools a minimum length that is greater than the maximum dimension of the housing.

Abstract: A tape cartridge in which it is possible to suppress warping otherwise produced in a lower cartridge half in its entirety on insert molding a meal plate on the lower cartridge half. A reel lock unit 21 having a reel lock member 37 and a mistaken recording inhibiting member 39 is mounted on a backside outer peripheral wall section 16. Formed adjacent to the corners intermediate between the reel lock unit 21 and the corners are cut-outs 16C, 16D in the outer peripheral wall section 16. The cut-outs 16C, 16D are of cut-out depths coincident with the boundary line of a label area L bonded on the backside of the main cartridge body portion 2.

Abstract: A tape cartridge is provided with a cartridge case constituted by installing a cover on an upper surface of a base plate, a magnetic tape runningly installed in the cartridge case, and a drive belt for running the magnetic tape.The base plate includes a hard protective coat layer at its upper and lower surface or either of upper and lower surfaces.The base plate is formed by punching a base plate material sheet covered with the protective coat layer into a predetermined shape.

Abstract: A tape cassette capable of permitting a parting line during manufacturing of a die for molding a casing thereof to be kept constant to accomplish joining between an upper casing member and a lower casing member with increased accuracy and facilitate incorporation of components for the cassette into the casing. The upper casing member has tapping bosses for screwing provided thereon and having the same height as a peripheral wall thereof. The lower casing member has tapping bosses, at least one of which also functions as a reference hole, and which have a height greater than a peripheral thereof. The tapping bosses of the lower casing member which are arranged on opposite sides of a front portion of the casing are each formed on a peripheral wall thereof with a cutout so as to fit therein a portion of a front wall of the upper casing member.

Abstract: Improved data protection features for a magnetic recording tape cartridge comprise a recess in the cartridge shell and a movable "file protect" device, which may be a rotatable plug or slidable member. The features enable tape drives to distinguish between two types of cartridges with otherwise identical form factors, allowing one of the cartridges to contain a recording tape with different characteristics that require the tape drive to identify the characteristics of the tape prior to use.

Abstract: A recording medium storage cassette includes a cassette housing composed of an upper cassette shell and a lower cassette shell and in which a part of an outer ornamented body of the cassette is formed of a metal plate member made by press-treatment.

Abstract: A tape cartridge comprising a base plate, a pair of tape reels, a drive roller for allowing magnetic tape to undergo a traveling operation, and a cover member of synthetic resin attached to cover one surface side of the base plate. This tape cartridge comprises a pair of engagement recessed portions respectively provided on both sides of the cover member so that, at the time of loading into a tape drive unit, supporting members provided at the side of the unit are engaged therewith, an erroneous loading limiting portion being provided in either of the engagement recessed portions. A plurality of supporting mechanisms absorb expansion differences or contraction differences resulting from a difference between the coefficient of thermal expansion of the cover member and that of the base plate.

Abstract: A data tape cartridge is formed on a baseplate of polymeric material which supports mounting pins and tape guides thereon for supporting tape components in rigid and dimensionally-stable manner using integrally formed bosses to support the mounting pins and guides. Additional stability against flexure is achieved using a matrix pattern of integrally-formed webs or ribs and sidewalls in the baseplate and by attaching a top plate substantially about the entire perimeter of the sidewalls. Lateral forces exerted against rotatable components on the mounting pins are transferred to the baseplate and top plate by the mounting pins that are supported in both plates. A midguide support is integrally formed in the baseplate to support a guide pin at critical location adjacent the location along the tape path in the cartridge at which a tape transducer interacts with tape.

Abstract: A tape cassette including a cassette case consisting of an upper half and a lower half fastened together by at least one boss provided integrally on the upper half and at least one boss-receiving member provided integrally on said lower half. The boss includes an upper post and a plurality of first radial ribs projecting radially from the surface of the upper post and the boss-receiving member includes a lower post having a recess at its top end for receiving a projecting end of the boss, and the lower post is provided with a plurality of second radial ribs extending radially from the periphery of the lower post and said lower post has a minimum wall thickness around the recess sufficient to to connect the second radial ribs. The accuracy of the boss-receiving member is improved, the deviation of the total thickness of the upper and the lower halves which could otherwise occur is prevented, and the molding cycle can be shortened.

Abstract: A tape cartridge comprises a base plate, a pair of tape reels rotatably supported by a pair of upstanding reel shafts which shafts are supported on the base plate, and a magnetic tape wound on the tape reels wherein a plurality of tape guides are provided to define a tape travel path. The base plate is formed with an aluminum-alloy plate with a hard protective film on both faces of the aluminum-alloy plate and small impressions in the hard protective film for elimination of residual strain. The hard protective film is formed by an anodic oxidation coating. In order to eliminate residual stress or strain existing in the base plate formed by a punching operation, each of the small impressions is formed by impressing the hard protective film to a depth within a thickness of the hard protective film or to a depth within a permissible limit of deformation (elongation) of the hard protective film.

Abstract: A cassette transport configuration provides a cassette insertion slot for introducing a cassette cartridge, guide rails for guiding and positioning each cassette cartridge and a plurality of cassette detecting elements for detecting the correct positioning of each cassette. The detecting elements are spaced apart on an upper inner portion of the insertion slot.

Abstract: A tape cassette which can maintain stably the accuracy of the reference planes for determining the height of the tape cassette and which allows enhancement in accuracy of positioning, height positioning reference planes being provided inwardly a specified distance apart from an outside casing surface of the tape cassette such that the reference plane for determining the height of the tape cassette relative to the apparatus is not provided on the outside casing surface of the tape cassette, thus the reference planes remain free from contact with any mechanism for loading the tape cassette or with any foreign matter in transport. Thus, the reference planes can be kept free from damage.

Abstract: In order to prevent interference between the upper flange of a tape reel and the upper edge of a magnetic tape when a tape cassette is ejected from a cassette drive system, the tape cassette case is formed with a raised portion. In the illustrated examples, the cassette case consists of upper and lower half case members, and a pair of tape reels rotatably supported in the case. When loaded in the drive system, reel holders enter first and second holder holes of the cassette case and uphold the tape reels above the inside surface of the cassette case, respectively. Each holder hole is fringed by an inner raised portion raised from the inside surface of the cassette case, and an outer raised portion which is outside the inner raised portion and lower in height than the inner raised portion.

Abstract: The tape cassette (10) of the present invention comprises a cassette body comprising an upper half (1) and a lower half (2), and an openable lid (3) provided at the front end of the cassette body. The tape cassette is characterized in that the upper half (1), the lower half (2) and the lid (3) comprise an anti-static resin.

Abstract: In order to assure the assembly steps of a tape cartridge, a base plate of the cartridge has a rough surface. The rough surface is possessed by a plastic layer coated on the base plate. For producing the rough surface, fine particles and/or fibrous members are embedded in the plastic layer.

Abstract: A data cartridge for use for example in an external memory unit for backing up a computer in which it is possible to secure a smooth surface quality of an upper surface of a base plate in base contact areas with which rotating parts and other mechanism parts of the data cartridge make base contact. In the upper surface 3b of an aluminum base plate 3, a plurality of base contact areas TA of rotating parts RP and other mechanism parts MP such as tape reels, a drive roller, a corner roller and a mirror for optical detection of tape ends are partially surface-pressed to form a plurality of recesses 3c having smooth surfaces free of scratches.

Abstract: A tape cassette includes tape reels and a cassette main body formed of an upper shell and a lower shell. In such a tape cassette, a tape reel position restricting portion serving as a reinforcing member for the lower shell is provided on the lower shell at a position outside an outer periphery of the lower flange. The tape reel position restricting portion includes a high rib; an intermediate rib being lower than the high rib within a range not to obstruct passing of a tape end detecting light beam, and being positioned in a tape end detecting light path; and a low rib being lower than the intermediate rib, and being positioned in a tape path region. The intermediate rib and the low rib are preferably disposed outside the high rib.

Abstract: A tape cassette for a recording/reproducing apparatus comprises a cassette casing comprising an upper half and a lower half, a front cover provided to cover a front opening portion of the cassette casing for protecting a magnetic tape and for opening and closing the front opening portion and a locking member provided on at least one of right and left side surfaces of the cassette casing to lock the front cover when it is closed. A gap is formed between an outer side surface of the cassette casing and an inner side surface of the front cover so as to permit insertion of a member which serves to release the locking member from being locked. A projection is formed on an inner surface of the front cover covering the gap.

Abstract: A tape cassette includes a pair of cassette halves and a pair of hubs enclosed between the cassette halves, and about which a recording medium, or tape can be wound. Each cassette half includes a first molded body and a second molded body overlying it. The first molded body has a first principal surface and a first upstanding wall which is perpendicular to the principal surface and forms an integral part thereof and a part of a peripheral surface of the half. The second molded body has a second principal surface which is generally rectangular and overlies the first principal surface, and a second upstanding wall connected to the first upstanding wall to form the peripheral surface of the half therewith, forming an integral part of the second principal surface and surrounding it. The first and second upstanding walls are connected by a junction having a thickness increasing gradually across the thickness of the half.

Abstract: A cover of a tape or data cartridge to be used as an external memory for a computer includes a number of temporary fixture pins integral with a main body of the cover. The pins function to temporarily fix the main body to a base plate of the tape cartridge. The pins are arranged to be engageable respectively with engaging sections formed in the base plate. Each pin includes a first engagement portion for causing the main body to be provisionally fixed to the base plate in a state where the main body is in contact with the base plate, and a second engagement portion for causing the main body to be temporarily fixed to the base plate in a state where the main body is separate from the base plate.

Abstract: A tape cassette includes a pair of cassette halves and a pair of hubs enclosed between the cassette halves, and about which a recording medium, or tape can be wound. Each cassette half includes a first molded body and a second molded body overlying it. The first molded body has a first principal surface and a first upstanding wall which is perpendicular to the principal surface and forms an integral part thereof and a part of a peripheral surface of the half. The second molded body has a second principal surface which is generally rectangular and overlies the first principal surface, and a second upstanding wall connected to the first upstanding wall to form the peripheral surface of the half therewith, forming an integral part of the second principal surface and surrounding it. The first and second upstanding walls are connected by a junction having a thickness increasing gradually across the thickness of the half.

Abstract: A tape cassette comprising a cassette casing composed of an upper half casing and a lower half casing, a pair of hubs around which a magnetic tape is wound and which are rotatably fitted into circular peripheral walls formed in the cassette casing, and tape guide members formed in the cassette casing at positions through which the magnetic tape wound around the hubs is traveled, wherein the thickness of the flat surface walls and the thickness of the outer peripheral walls of the upper and lower half casings are respectively uniform.

Abstract: A cover of a tape or data cartridge to be used as an external memory for a computer includes a number of temporary fixture pins integral with a main body of the cover. The pins function to temporarily fix the main body to a base plate of the tape cartridge. The pins are arranged to be engageable respectively with engaging sections formed in the base plate. Each pin includes a first engagement portion for causing the main body to be provisionally fixed to the base plate in a state where the main body is in contact with the base plate, and a second engagement portion for causing the main body to be temporarily fixed to the base plate in a .state where the main body is separate from the base plate.

Abstract: A lightweight video cassette cartridge includes a cartridge shell and an outer structural frame that is secured to the front face of the cartridge shell for significantly increasing the rigidity of the cartridge shell without adding excessive weight to the lightweight video cassette cartridge.

Abstract: A recording medium containing cartridge comprises a first casing shell having a recess formed proximate a side wall thereof and a second casing shell matingly fitting with the first casing shell. The second casing shell has a projection formed at a location corresponding to the recess formed in the first casing shell. A dimension of a distal surface of the projection contacting a bottom of the recess is made less than a corresponding dimension of the bottom of the recess. This leaves a gap that safely accommodates a burr formed during a welding process that joins the casing shells together. First and second reels are rotatably mounted between the first and second casing shells and tape is wound therebetween.

Abstract: A lightweight solid-core video cassette cartridge includes a cartridge shell and a solid-core structural member. The cartridge shell includes spaced apart top and bottom panels which define an interior hollow chamber therebetween. A pair of video tape reels are positioned within this hollow chamber for winding video tape. The solid core structural member is provided for maintaining the spaced relationship of the top and bottom panels. The solid core structural member is formed of lightweight materials such as styrofoam, cardboard or synthetic resin. The solid core structural member and the video tape reels fill substantially the entire volume of the cartridge shell hollow chamber.

Abstract: A tape cassette comprises a cassette casing composed of an upper casing and a lower casing; a pair of tape reels rotatably installed in the cassette casing and wound with a tape; a guide pin for controlling a running position of the tape; and a rotatable opening and closing lid for covering an opening portion of the cassette casing for drawing out the tape. A protrusion or protrusions are provided for restraining a height of the guide pin on a bottom face of a recess for inserting the guide pin provided on an inner face of the upper casing.

Abstract: A data tape cartridge is formed on a baseplate of polymeric material which supports mounting pins and tape guides thereon for supporting tape components in rigid and dimensionally-stable manner using integrally formed bosses to support the mounting pins and guides. Additional stability against flexure is achieved using a matrix pattern of integrally-formed webs or ribs and sidewalls in the baseplate and by attaching a top plate substantially about the entire perimeter of the sidewalls. Lateral forces exerted against rotatable components on the mounting pins are transferred to the baseplate and top plate by the mounting pins that are supported in both plates. A midguide support is integrally formed in the baseplate to support a guide pin at critical location adjacent the location along the tape path in the cartridge at which a tape transducer interacts with tape.

Abstract: The upper cassette casing of a videotape cassette comprises a base panel and peripheral walls vertically extending from corresponding edges thereof. The base panel is provided with a first section which carries a pressure spring adapted to depress the tape reels toward the lower cassette casing, and a second section surrounding the first section, the second section having a thickness less than that of the first section. Each of the peripheral walls includes a plurality of reinforcement ribs which inwardly protrude therefrom, and is of a substantially same thickness with respect to each other and as that of the second section of the base panel. The thickness of the second section of the base panel and the peripheral walls is as thin as 50 percent of that of the first section.

Abstract: A lightweight solid-core video cassette cartridge is provided. The lightweight solid-core video cassette cartridge includes a cartridge shell and a solid-core structural member. The cartridge shell includes spaced apart top and bottom panels which define an interior hollow chamber therebetween. A pair of video tape reels are positioned within this hollow chamber for winding video tape. The solid core structural member is provided for maintaining the spaced relationship of the top and bottom panels. The solid core structural member is formed of lightweight materials such as styrofoam, cardboard or synthetic resin. The solid core structural member and the video tape reels fill substantially the entire volume of the cartridge shell hollow chamber.

Abstract: Mechanical incompatibility features between a first and a second belt-driven magnetic recording tape cartridge comprise a shorter rail-mating channel and a countersunk lip in one of the side walls of the first cartridge. The features prevent the first cartridge from being inserted into a tape drive for reading the second cartridge, and vice versa, in order to mechanically distinguish between belt-driven cartridges containing magnetic tapes with different recording characteristics, but having the same form factor.

Abstract: A tape cassette for a recording/reproducing apparatus comprises a cassette casing comprising an upper half and a lower half, a front cover provided to cover a front opening portion of the cassette casing for protecting a magnetic tape and for opening and closing the front opening portion and a locking member provided on at least one of right and left side surfaces of the cassette casing to lock the front cover when it is closed. A gap is formed between an outer side surface of the cassette casing and an inner side surface of the front cover so as to permit insertion of a member which serves to release the locking member from being locked. A projection is formed on an inner surface of the front cover covering the gap.

Abstract: In order to produce a cassette, such as tape cassette, disc cassette or the like, the following steps are taken. First, fixed and movable dies are prepared which are unitable to define therewithin a shaped cavity. The movable die has at its inner surface a retaining ridge which includes a first portion immediately projected from the inner surface and a second portion immediately projected from the first portion. The second portion has side walls at least one of which has a laterally extending projection at the position remote from the first portion. Second, the fixed and movable dies are coupled to define the shaped cavity therewithin. Third, a plastic material is injected into the shaped cavity in such a manner that the retaining ridge is immersed in the injected plastic material. Fourth, the fixed and movable dies are uncoupled and a cured molded article of the plastic material thus produced is released from the movable die.

Abstract: A videocassette housing includes a base connected to a cover. Cover bosses are received within respective base bosses, and the cover is connected to the base by fasteners passing through the base bosses and cover bosses. The cover bosses extend only slightly beyond the centerline of the cassette and seat at the bottom of the base bosses. There is very little clearance between the bosses and the base boss has an inner surface defined by a plurality of ribs axially and equiangularly located along a circle.

Abstract: A tape-cassette of the now popularly standardized dual transfer-spool type, having identical top and bottom mating halves, including a slightly raised mesial anterior portion, having a pair of anterior aperatures for entry of a capstan-drive roller apposed to a central anterior aperture for entry of an electromagnetic-head. Wherein is provided a special "anti-jam" perimeter-declivity formation serving to ameliorate occasional jamming tendancy known to the standard squared perimeter cross-section manner of construction. The notably smooth-running characteristics of this otherwise successful cassette configuration are not in any way compromised, while now rendered virtually care-free as to loading procedure, even in a darkened room.

Abstract: An integrally molded polypropylene tape cassette has a base with vertical first and second side walls. A rear wall is attached to the base by an integral hinge. A cover attached to the rear wall by an integral hinge, and a dust door attached to the cover by an integral hinge. Snaps between the cover and base connect and close the apparatus with integral springs pressing on tape reel hubs. The dust door covers a forward wall protruding from the base between the first and second side walls. The forward wall has slots and posts for allowing passing of the tape between the interior and exterior of the cassette. The cassette further includes a dust door latch which is integrally molded with one of the sides of the tape. An integrally molded tape hub brake is positioned between the hubs for locking the hub flanges when the cassette is not in use the entire cassette is made of polypropylene material.

Abstract: A videotape cassette case has a plurality of miniaturized ribs, effectively replacing the prior art guide ribs of complicated structure, to thereby attain the advantages of lowering the manufacturing cost and increasing the cooling efficiency during the injection moulding thereof.

Abstract: A lightweight, limited use video cassette cartridge that performs all of the needed functions of permanent-use video cassette cartridges, but comprises only eight parts, all made of thin gauge, recyclable synthetic resin material. The lightweight video cassette cartridge includes a top panel and a bottom panel which are mated to form the cartridge shell, a supply reel and a take-up reel rotatably mounted within the cartridge shell, a novel structure for maintaining the position of the reels within the cartridge while in use, leader tape for attaching the recorded video tape to the reels, two pieces of low coefficient Teflon tape, and a removable dust cover to protect the exposed video tape. The cartridge weighs less than 1.3 ounces when completely assembled and can be recycled without removing parts.

Abstract: A cassette base includes a lower wall, two side walls perpendicular to the lower wall, a front wall perpendicular to the lower and side walls, and a rear wall opposing the front wall and perpendicular to the lower and side walls. An insert area is disposed on the lower wall adjacent the rear wall for receiving a reel brake mechanism. The insert area includes a front wall and two opposing side walls. Each side wall has a notch for receiving and holding a reel brake mechanism and is spaced from the base rear wall. At least one strengthening brace connects the rear and lower walls.

Abstract: A tape cassette comprising a casing for housing a tape-like medium, which is made of synthetic resin; the casing including an upper half casing and a lower half casing, which are connected together at connecting portions as one unit; a cylindrical projection which is formed on either one of the upper half casing and the lower half casing, and which has a hollow recess and a receiving recess formed therein to be apart from each other by a partition wall; a pole-like boss which is formed on the other half casing to project therefrom, and which has an engagement rib and a supporting rib, the engaging rib being adapted to be inserted into the receiving recess of the cylindrical projection, and the supporting rib being adapted to support an abutting surface of the cylindrical projection; the supporting rib having an abutting surface formed thereon to receive the abutting surface of the cylindrical projection and to form a gap between melt-bonding surfaces of the cylindrical projection and the pole-like boss when t

Abstract: An integrally molded tape cassette has a base with vertical first and second side walls. A rear wall is attached to the base by an integral hinge. A cover attached to the rear wall by an integral hinge, and a dust door attached to the cover by an integral hinge. Snaps between the cover and base connect and close the apparatus with integral springs pressing on tape reel hubs. The dust door covers a forward wall protruding from the base between the first and second side walls. The forward wall has slots and posts for allowing passing of the tape between the interior and exterior of the cassette. The cassette further includes a dust door latch which is integrally molded with one of the sides of the tape. An integrally molded tape hub brake is positioned between the hubs for locking the hub flanges when the cassette is not in use.

Abstract: A recording tape cassette which includes two sets of printed material disposed between an outer disk of each tape reel and a wall of the cassette case. The first set of printed material comprises a plurality of lines which cross obliquely with respect to visual fields of the second set of printed material such that in response to the rotation direction of the tape reels, both sets of printed material combine to produce an optical effect of turbulence.

Abstract: A tape cartridge having a housing structure. The housing structure includes a base plate and a cover having an open-ended box shape and secured to the base plate. The cover includes a top wall, a front wall and a side wall which extend substantially perpendicular to each other to define a corner portion of the cover. A notch is formed at the corner portion of the cover to be thereby prevented from failing to be detected.

Abstract: A magnetic tape cassette and a method for manufacturing a magnetic tape cassette including a combination of upper and lower half cases each including a window part and a main body half, the main body half including a trapezoidal portion on a top side of the main body half extending along a length thereof and defining a portion of the cassette having an increased thickness. The cassette is produced in accordance with a process including the steps of providing a mold having a first injection space defining the main body half and a second injection space defining the window part, providing a first gate, communicating with the first injection space, in the metal mold at a position of the trapezoidal portion of the main body half, injecting a first resin into the first injection space through the first valve gate, providing a second valve gate, communicating with the second injection space, in the metal mold, and injecting a second resin into the second injection space through the second valve gate.

Abstract: A magnetic tape cassette which solves the problem of deformation of a guide groove due to a sink mark formed when the neighboring portions of a shaft insertion opening are reduced in thickness to reduce the weight of the cassette case. A tongue-shaped projection is formed adjacent to a central guide groove, the projection including a recessed portion, such as a circular recess or a lateral notch, for reducing the thickness of the projection.

Abstract: A tape cassette for accommodating a magnetic recording tape comprises a casing including first and second major walls opposite to each other and spaced a distance corresponding to the width of a length of magnetic tape, a pair of opposite end walls, and front and rear walls opposite to each other, all assembled together to render the casing as a whole to represent a generally rectangular box-like configuration. Art erroneous erasure preventing member is accommodated within a detection hole, defined in the rear wall, for selective movement between retracted and projected positions in a direction substantially perpendicular to the rear wall. The erasure preventing member has an outer surface which, when in the projected position, closes the detection hole while lying flush with an outer surface of the rear wall, indicating the condition in which the magnetic tape contained in the tape cassette is available for information recording or erasure.

Abstract: A data tape cartridge is formed on a baseplate of polymeric material which supports mounting pins and tape guides thereon for supporting tape components in rigid and dimensionally-stable manner using integrally formed bosses to support the mounting pins and guides. Additional stability against flexure is achieved using a matrix pattern of integrally-formed webs or ribs and sidewalls in the baseplate and by attaching a top plate substantially about the entire perimeter of the sidewalls. Lateral forces exerted against rotatable components on the mounting pins are transferred to the baseplate and top plate by the mounting pins that are supported in both plates. A midguide support is integrally formed in the baseplate to support a guide pin at critical location adjacent the location along the tape path in the cartridge at which a tape transducer interacts with tape.

Abstract: A tape cartridge including an improved housing is disclosed. The housing has a base plate on which tape packs are rotatably mounted and a cover secured to the base plate and having an opening. A transparent panel is fitted to the opening of the cover and allows a light to pass from an outside to an inside of the housing. The transparent panel has on peripheral portions thereof projections engageable with grooves which are formed on peripheral portions of the cover adjacent the opening.