Patent ID: 7187522
Filing Date: 2007-03-06
Classification: G11B

Abstract:
1. A tape cassette comprising: upper and lower half cases of which a cassette case is composed; a reel with a magnetic tape wound thereon being rotatably stored in the cassette case; a pressure mechanism for pressing elastically the central upper portion of the reel, the pressure mechanism being mounted on the upper half case; a center pin being disposed on one of the reel central upper portion and the pressure mechanism; and a flat plate portion contacted by the center pin, the flat plate portion being disposed on the other of the reel central upper portion and the pressure mechanism; wherein one of the center pin and the flat plate portion is molded mainly of polyacetal-system synthetic resin, the other is molded mainly of polybutylene-system or polyethylene-system synthetic resin, and titanium oxide is added to the polybutylene-system or polyethylene-system synthetic resin.