Patent ID: 8476566

Claim:
A library device comprising: a storage shelf that includes storage units aligned in a plurality of columns; and a conveying robot that grasps and conveys cartridges stored in the storage units, wherein the conveying robot includes: a base board that is located to face the plurality of columns, one end of the base board being supported movably up and down by a first support post, and another end of the base board being supported movably up and down by a second support post; a movable unit that includes a grasping unit that grasps the cartridges stored in the storage units and moves on the base board; an inclination measuring unit that measures an inclination of the movable unit; and an inclination correction unit that adjusts heights of both ends of the base board according to an inclination value of the movable unit measured by the inclination measuring unit and corrects the inclination of the movable unit, each of the first support post and the second support post includes a part where a first engage portion is formed that is engaged with a second engage portion provided to the base board and supports the base board, and the inclination correction unit includes a first motor that drives the first support post and a second motor that drives the second support post.