Patent ID: 6857593
Filing Date: 2005-02-22
Classification: G11B,Y10T

Abstract:
1. A magnetic tape cartridge comprising: a first opening through which a magnetic tape is drawn out, the first opening being provided in part of a sidewall of a cartridge case across a lower half and an upper half of the cartridge case; a slide door that slides along the sidewall provided with the first opening to open and close the first opening; an extension arm formed substantially in a middle section of a front end portion of the slide door; and a second opening formed substantially in a middle section of an end portion of the sidewall for receiving the extension arm when the first opening is closed, wherein at least one of a lower half portion and an upper half portion of the end portion of the sidewall, which is respectively below and above the second opening, is provided with a holding concave portion that receives at least one of a lower section and an upper section of the front end portion of the slide door when the first opening is closed, wherein the holding concave portion is recessed within the end portion of the sidewall, and wherein the cartridge case contains a lower guide groove for accommodating a lower portion of the slide door for sliding the slide door to open and close the first opening, the lower guide groove extending to and abutting the sidewall.