Patent ID: 8873360

Claim:
A stand-alone library apparatus comprising: a cabinet having an operating part on its front panel, a first storage rack which is set at a back panel side of said cabinet and a second and a third storage racks which are set at the left and right side panel side of said cabinet for storing a plurality of recording media, a recording/reproduction device of said recording media, a robot which makes said recording media move between said storage racks and said recording/reproduction device, a provisional storage rack which is provided at one level part of said first storage rack and which can be detached from said first storage rack, two opening parts equal in cross-sectional shape to said provisional storage rack which are provided at side surfaces of said cabinet which are positioned at the two sides of said provisional storage rack, and detachable lids which cover said opening parts being provided at the side surfaces of the cabinet, a conveyer device including two track members each having a length equal to a length between said opening parts and replaceable with said provisional storage rack and a moving member which is able to hold and convey a cartridge on said track members: wherein another library apparatus of a substantially identical specification can be aligned at either side of said library apparatus in parallel after detaching said lids which are facing each other, exchanging said provisional storage racks for said track members with said moving member on one of them and connecting said track members to increase a capacity thereof.