# US 8,786,980 B2 · Magnetic tape library device including cartridge exchange number restriction mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,980 B2 - Document ID: US8786980B2 - Status: Granted - Kind: B2 - Application number: 13/745,581 - Filed: 2013-01-18 - Published: 2013-07-25 - Granted: 2014-07-22 - Earliest claimed: 2012-01-20 - Assignees: NEC Corporation - Applicants: Shinichi Sudou - Inventors: Shinichi Sudou - Web page: https://patentgrep.com/patent/US8786980B2 ## CPC - G11B 15/6815: {in horizontal direction} - G11B 15/6825: {Details of magazines, e.g. removable, adapted for cassettes of different sizes} - G11B 15/6835: {the cassettes being transferred to a fixed recorder or player using a moving carriage} - G11B 15/689: {Control of the cassette changing arrangement} - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract To provide a magnetic tape library device capable of easily exchanging a specific cartridge required to be exchanged under the mailslot function and shortening the time for inventory with a simple structure even with the magazine where a plurality of stages of cells for housing the magnetic tape cartridges inside thereof are loaded. The magnetic tape library device includes: a magazine which houses cartridges via a plurality of stacked cells; a device main body which houses the magazine to be freely movable; an accessor which transports the magnetic tape cartridge extracted from the magazine towards a magnetic tape drive; and a cartridge exchange number restricting mechanism which restricts the magnetic tape cartridges from being ejected out from remaining cells except for the cell where at least a specific magnetic tape cartridge is housed out of the plurality of cells on the very front row of the drawn out magazine. ## Claims ### Claim 1 A magnetic tape library device, comprising: a magazine which houses a magnetic tape cartridge inside thereof via a cell; a device main body which houses the magazine in a freely movable manner within a same plane along an inserting/extracting direction; and an accessor provided on one side of the device main body along the inserting/extracting direction, which transports the magnetic tape cartridge extracted from the magazine along the inserting/extracting direction and towards a magnetic tape drive, wherein: a plurality of the cells are provided inside the magazine in a plurality of rows along the inserting/extracting direction and on a plurality of stages in a height direction in a stacked manner; and a cartridge exchange number restricting mechanism is provided for restricting the magnetic tape cartridges from being ejected out from remaining cells except for the cell where at least a specific magnetic tape cartridge is housed out of the plurality of cells under a state where the magazine is being drawn out so that the plurality of cells on a front-side drawer end part in the inserting/extracting direction out of the plurality of cells are outside of the device main body. ### Claim 2 (depends on 1) The magnetic tape library device as claimed in claim 1, wherein: a part of the cartridge exchange number restricting mechanism is provided in the magazine; and the cartridge exchange number restricting mechanism comprises a block section which blocks ejection of the cartridges housed in the cells, and an interlocker which holds the block section at one end part and operates in an interconnection manner when the magazine is drawn out. ### Claim 3 (depends on 2) The magnetic tape library device as claimed in claim 2, wherein: an interlocker driving mechanism which constitutes the cartridge exchange number restricting mechanism and drives the interlocker is provided to the device main body; and the interlocker driving mechanism is constituted with an engaging member which enables a top-end projection part formed in one end of the rocking member to be displaced when engaged with the top-end projection part by having the attaching pin member as a rotation center. ### Claim 4 (depends on 1) The magnetic tape library device as claimed in claim 1, wherein the interlocker comprises: a sliding member provided to the front-side end part in the inserting/extracting direction of the magazine, one end part thereof in a length direction being attached to a bottom face part of the magazine via an attaching pin member, and other end part being able to slide by the attaching pin member; and a rocking member provided to a bottom face of the sliding member in an integrated manner with the sliding member in T-shape on a plane, which is displaced in a direction that is orthogonal to the inserting/extracting direction when the magazine is drawn out, and the block section is provided to the other end part of the sliding member. ### Claim 5 (depends on 1) The magnetic tape library device as claimed in claim 1, wherein the interlocker is constituted with: a slide member provided to the front-side end part of the inserting/extracting direction of the magazine, both ends in the length direction being supported, respectively, by attaching pin members provided on the bottom face part of the magazine to be slidable in the length direction; an energizing member provided in a center part of the slide member in the length direction, which energizes the slide member constantly to one side of sliding directions; a block section forming member provided on one end of the slide member in the length direction, which enables the block section to frequent along the inserting/extracting direction in association with sliding movements of the slide member in the length direction; and the rocking member provided to a bottom face of the slide member in an integrated manner with the slide member in T-shape on a plane, which is displaced in a direction that is orthogonal to the inserting/extracting direction by resisting the energizing member when the magazine is drawn out. ### Claim 6 (depends on 5) The magnetic tape library device as claimed in claim 5, wherein: the interlocker driving mechanism for driving the interlocker is provided in the device main body; and the interlocker driving mechanism is constituted with an engaging member which enables a top-end projection part formed in one end of the rocking member to be displaced to the block section, side when engaged with the top-end projection part. ### Claim 7 A magnetic tape library device, comprising: a magazine which houses a magnetic tape cartridge inside thereof via a cell; a device main body which houses the magazine in a freely movable manner within a same plane along an inserting/extracting direction; and accessor means provided on one side of the device main body along the inserting/extracting direction, for transporting the magnetic tape cartridge extracted from the magazine along the inserting/extracting direction and towards a magnetic tape drive, wherein: a plurality of the cells are provided inside the magazine in a plurality of rows along the inserting/extracting direction and on a plurality of stages in a height direction in a stacked manner; and cartridge exchange number restricting means is provided for restricting the magnetic tape cartridges from being ejected out from remaining cells except for the cell where at least a specific magnetic tape cartridge is housed out of the plurality of cells under a state where the magazine is being drawn out so that the plurality of cells on a front-side drawer end part in the inserting/extracting direction out of the plurality of cells are outside of the device main body.