JPH042392U

JPH042392U -

Info

Publication number: JPH042392U
Application number: JP4085190U
Authority: JP
Priority date: 1990-04-17
Filing date: 1990-04-17
Publication date: 1992-01-09

Description

[Brief explanation of the drawing]

第１図ないし第６図は本考案に係る３．５イン
チ用のデイスクカートリツジの一実施例を示す図
であり、第１図はこのデイスクカートリツジの表
側の斜視図、第２図は同裏側の斜視図、第３図は
このデイスクカートリツジの正面図、第４図はこ
の二重書き込み防止部の断面図、第５図はこの二
重書き込み防止部の下半片部分の斜視図、第６図
は前記下半片部分の平面図、第７図ないし第１０
図は従来のデイスクカートリツジを示す図であり
、第７図はこのデイスクカートリツジの斜視図、
第８図はこの二重書き込み防止部の斜視図、第９
図および第１０図はケースの部分側面図である。１…ケース、１ａ…上半片、１ｂ…下半片、１
１…二重書き込み防止部、１３ａ，１３ｂ…通過
孔、１５…閉止片。 1 to 6 are views showing an embodiment of a 3.5-inch disk cartridge according to the present invention, FIG. 1 is a perspective view of the front side of this disk cartridge, and FIG. 2 is a perspective view of the front side of this disk cartridge. 3 is a front view of this disk cartridge, FIG. 4 is a sectional view of this double write prevention section, FIG. 5 is a perspective view of the lower half of this double write prevention section, and FIG. Figure 6 is a plan view of the lower half, Figures 7 to 10.
The figure shows a conventional disk cartridge, and FIG. 7 is a perspective view of this disk cartridge.
Fig. 8 is a perspective view of this double writing prevention section, Fig. 9
Figures 1 and 10 are partial side views of the case. 1...Case, 1a...Upper half piece, 1b...Lower half piece, 1
DESCRIPTION OF SYMBOLS 1... Double writing prevention part, 13a, 13b... Passing hole, 15... Closing piece.

Claims

[Scope of utility model registration request]

A case formed by combining an upper half piece and a lower half piece so as to sandwich a disk-shaped recording medium, and a double-writing prevention device provided in this case to prevent double writing by an optical head on the disk-shaped recording medium. a passage hole formed in the upper and lower halves so that the double write prevention section allows the irradiation light from the write prevention sensor to pass therethrough;
In a 3.5-inch disk cartridge having a closing piece disposed to be able to close the passage hole, the closing piece is slidably housed in both the upper and lower halves. This is a 3.5 inch disc cartridge.