Patent ID: 7780106

Claim:
A recording tape cartridge comprising: a case for accommodating a reel on which recording tape is wound, the case comprising an upper case and a lower case which define a case wall; a non-contact memory board, on which various information is stored and which is disposed at a specific angle within the case, wherein the lower case comprises a position control member of substantially a C-shape in plan view for controlling the position of the memory board, the position control member being formed with an opening of a specific width at substantially a central portion in a left-right direction of the case wall, in the C-shape in plan view, and a portion of the position control member in a direction facing the opening being cut out with a specific width, and the upper case comprises a retaining member that faces portions of the top face of the memory board at both ends in the memory board length direction; a support member provided at the lower case for supporting the memory board at substantially the central portion of the bottom face of the memory board, wherein the support member protrudes out from an inside face of the lower case at an inside of the position control member formed in the C-shape in plan view, and a top face of the support member is slanted at a specific angle from the lower case; and a projecting portion formed at one end side in the length direction of the memory board, and a protruding leading end portion of the retaining member is cut out in an inverted V-shape and faces the projecting portion.