Cartridge case

A press jig for use in adhesion of a plate-shaped cartridge memory onto a memory retaining portion provided on a bottom plate of a lower half of a magnetic tape cartridge such that the cartridge memory is retained on the memory retaining portion so that a first end of the plate-shaped cartridge is closer to the bottom plate of the lower half than an opposite second end of the plate-shaped cartridge, the press jig pressing the cartridge memory in a direction toward the bottom plate during the adhesion of the cartridge memory onto the memory retaining portion with glue, comprising:

• a pressing portion for pressing an upper surface of the cartridge memory that is placed on the memory retaining portion;
• and
• a displacement-restriction portion for contacting a lateral side of the first end of the cartridge memory when the pressing portion presses the cartridge memory, to prevent the cartridge memory from displacing downwardly along the memory retaining portion.

A method of assembling a cartridge memory with a lower half, which forms a part of a cartridge case of a magnetic tape cartridge, the cartridge memory including a plate-shaped substrate, and an IC chip placed on a flat portion of the substrate and forming a ridge portion, and the cartridge memory being sucked and picked up while assembling with respect to the lower half, the method comprising the steps of:

• supplying the cartridge memory with its ridge portion faced upward;
• and
• sucking the cartridge memory at the flat portion.

An assembling device comprising:

• a suction means for sucking a cartridge memory, the cartridge memory including a plate-shaped substrate on which an IC chip is placed to form a ridge portion and a flat portion, and the cartridge memory being picked up with its flat portion sucked by the suction means;
• and
• a sucking tube of the suction means in the form of a long thin tube such that when the cartridge memory is obliquely assembled with a lower half, which forms a part of a cartridge case of a magnetic tape cart,ridge, the sucking tube does not contact with a reel around which a magnetic tape is wound.