Patent ID: 8869368

Claim:
A method of removing a cartridge in a library device, the library device comprising: a cell that houses a plurality of cartridges in a row parallel to an ejection direction of each of the plurality of cartridges; a picker mechanism movable in a first direction, which is the ejection direction, a second direction opposite the first direction, a third direction perpendicular to the first direction, and a fourth direction opposite the third direction; a first urging unit that urges an outermost cartridge of the plurality of cartridges toward a predetermined position; a latch lever provided in the wall surface of the cell movable between an engaged position and a released position; and a second urging unit that urges the latch lever into the engaged position, the method comprising: a pressing step of the picker mechanism applying pressing force in the third direction against an urging force of the second urging unit, by pressing the picker mechanism against an abutting surface of the latch lever which faces the fourth direction; and a releasing step of releasing, after the pressing step, the urging force of the second urging unit by moving the picker mechanism in the first direction and separating the picker mechanism from the abutting surface, wherein during the releasing step, the picker mechanism moves so that a surface of the picker mechanism facing the third direction moves along the abutting surface of the latch lever until a surface of the picker mechanism facing the second direction passes a surface of the latch lever facing the first direction.