JPS6193879U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the structure of a magnetic disk cartridge according to an embodiment of the present invention based on the structure of a conventional cartridge, and Fig. 2 is a plan view showing the structure near the recording prevention identification member in the above embodiment. It is a diagram. 1A...upper half, 1B...lower half, 2...magnetic disk, 3...recording prevention identification member, 4...display section.

Claims (1)

[Scope of utility model registration request] A disk-shaped magnetic disk is rotatably housed in a case consisting of a pair of upper and lower cartridge halves, and the upper and lower end surfaces are exposed to openings provided in the upper and lower cartridge halves in the case, respectively, and recording on the magnetic disk is performed. rotates in a fixed direction as the amount increases, and is made visible from the outside depending on the amount of recording on the magnetic disk and the position of the display groove provided on the upper end surface;
In a magnetic disk cartridge capable of accommodating a counter gear whose position is mechanically detected by a drive/identification groove provided on the lower end surface, the upper and lower end surfaces are positioned in the case at a position where the counter gear can be accommodated. A display section is fixed to be exposed in openings provided in the upper and lower halves, and a display section is provided in a portion of the upper end surface where the display groove is not located during normal recording, and a display portion is provided in a portion of the lower end surface where the drive/identification groove is located during normal recording. A magnetic disk cartridge characterized in that it is provided with a recording prevention identification member each having an identification part in a portion where it is not located.