Fuji Photo Film Company, Limited

Other

Fujifilm Corporation

Hidetoshi Yamamoto

Hideaki Shiga

Yusuke Ishihara

Seiji Tsuyuki

Kouta Kitamura

Kenji Ishikawa

Yasushi Hatano

Naoki Okutsu

Kiyoo Morita

Daisuke Takahashi

Akihiro Hashimoto

The object of the invention is to provide a magnetic tape cartridge, in which a release pad can be assembled securely by a robot. A magnetic tape cartridge including: a reel around which a magnetic tape is wound; a cartridge case which houses the reel in a locked position; a release pad for releasing locking of the reel; and a cup-like hub of the reel in which the release pad is mounted, wherein a plurality of guide holes for allowing a plurality of lock release pins to penetrate therein, which extend from the lower surface of the release pad, are made in the periphery of a base plate of the cup-like hub, and a plurality of pairs of guide ribs, which are capable of guiding the plurality of lock release pins to the plurality of guide holes, stand inside the cup-like hub corresponding to the plurality of guide holes.

Method for determining a relative position of a part of a magnetic tape cartridge

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.

Magnetic tape cartridge

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.

A method of assembling a magnetic tape cartridge where an opening, through which a magnetic tape is drawn out, is provided in part of a sidewall of a cartridge case across a lower half and an upper half of the cartridge case. A slide door that opens and closes the opening is mounted between guide portions provided in the cartridge lower and upper halves, while stressing the slide door with a spring member toward a position in which the opening is closed. During mounting, the slide door is stressed with the spring member toward the position in which the opening is closed by fitting a lower edge of the slide door into the guide portion of the lower half A mounting position of the slide door is retained by holding an end of the slide door facing a direction in which the slide door moves to close the opening.

Method for assembling a magnetic tape cartridge

A magnetic tape cartridge is provided, in which the mating of the lower half and the upper half can be easily performed and which is applicable to automated assembly, when the magnetic tape cartridge having a sliding door is assembled. The rib projects from the upper section of the first guide wall in the direction of the opposite second guide wall. On the other hand, the groove, which faces the rib, is carved on the inner side surface of the sliding door. The rib engages with the groove, thereby restricting the vertical displacement of the sliding door. Also, the engagement of the rib and the groove guides the sliding door in the guide channel freely.

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.

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.

A cartridge casefor a magnetic tape cartridge comprises a cartridge caseconsisting of a lower halfand an upper half. The lower halfis provided with retaining ribseach having a retaining slanted surfacesuch that a plate-like cartridge memoryis positioned on the retaining slanted surfaceswith its one sidelowered and is obliquely supported with respect to a bottom plateof the lower half. The upper halfis provided with supporting members for supporting various non-resilient constituent parts positioned on the lower halfand including the cartridge memory. The upper halfis provided with a stopper rodsuch that when the upper halfis assembled with the lower half, the stopper rodreaches a cartridge memory-rising region before the supporting members contact with the non-resilient constituent parts on the lower half

Cartridge case with chip retaining features

A magnetic tape cartridge comprises: a reelaround which a magnetic tape MT is wound; a cartridge casefor accommodating the reelin a locked state; and a release padinserted into a cup-shaped hubA of the reelin a locked state of the reel. The release padincludes a pad bodyA having a plurality of corners to be faced proximately to the inner peripheral surfaceC of the cup-shaped hubA, and a plurality of lock releasing pinsB projecting downwardly from a bottom surface of the pad bodyA at the respective corners and inserted through a bottom surface of the cup-shaped hubA. The release padis provided with a flankE extending from each corner downwardly through the respective lock release pinB so that an assembling clearance is formed with respect to an inner periphery of a flangeG position in an open side of the cup-shaped hubA.

A tape cartridge is characterized by being provided with an opening to pull out a tape formed at a corner of a cartridge case; a curved door to open/close the opening; a slide mechanism to slide the door for the cartridge case; a door-side spring hooking portion formed at an end of said door; a case-side spring hooking portion formed on a bottom surface of the cartridge case; a coiled spring which is attached across the door-side spring hooking portion and case-side spring hooking portion, and energizes the door so as to close; and a regulation portion which is provided on one surface of the door, in which one end of a coiled spring is trial-fitted on a door-side spring hooking portion, and which is composed so as to regulate a position of the coiled spring when the coiled spring is pressed on one surface of the door.

A magnetic tape cartridge includes an openingC through which a magnetic tape is drawn out, and a slide doorthat slides along a sidewallD provided with the openingC to open and close the openingC. The cartridge having an assembly support device that guides a distal end of a spring support rod onto a support rod receiving block when the slide door is fitted in a lower half of the cartridge case. A proximal end of the spring support rod projects from the slide door, and a compression coil spring is wound around the spring support rod.

Assembly supporting device for magnetic tape cartridge

A magnetic tape cartridge includes an openingC through which a magnetic tape is drawn out, and a slide doorthat slides along a sidewallD provided with the openingC to open and close the openingC. The openingC is provided in part of the sidewallD across a lower halfA and an upper halfB of the cartridge case. At least one of a lower half portion and an upper half portion of the sidewall is provided with a holding grooveL that receives a front end portionA of the slide doorwhen the opening is closed. Therefore, the upper halfB and the lower halfA of the magnetic tape cartridge may be smoothly combined.

Growing community of inventors

Kanagawa, Japan

Hidetoshi Yamamoto