Patent ID: 7918412
Filing Date: 2011-04-05
Classification: G11B

Abstract:
1. A recording tape cartridge comprising: a case that includes an upper case and a lower case and houses a reel around which a recording tape is wound, the upper case comprising a peripheral wall which forms a side-wall of the upper case and extends in a rotational axis direction of the reel, and the lower case comprising a peripheral wall which forms a side-wall of the lower case and extends in the rotational axis direction of the reel, wherein a lower portion of the peripheral wall of the upper case and an upper portion of the peripheral wall of the lower case abut each other; a restricting wall that is formed at least in the lower case and defines an area in which the reel is housed; a housing portion that is formed between the restricting wall and a corner portion of the case; and a planar radio frequency identification tag that is provided in the housing portion such that the rotational axis direction of the reel is a normal line direction of the planar radio frequency identification tag, wherein the radio frequency identification tag includes a main portion and a peripheral edge portion, and wherein the main portion of the radio frequency identification tag is positioned between the abutting lower portion of the peripheral wall of the upper case and the upper portion of the peripheral wall of the lower case, such that the rotational axis direction of the reel is the normal line direction of the main portion of the radio frequency identification tag.