JPS58108070A - Cartridge - Google Patents

Abstract

PURPOSE:To obtain a small-sized, low-cost cartridge, by providing at least either one of a cartridge positioning hole and an information recording prevention detection part at a left and a right symmetrical position about a lengthwise center line. CONSTITUTION:At position in both surfaces of a cartridge case 1 which are near the front end and symmetrical about the lengthwise center line X-X' of the case 1, cartridge positioning holes 6a and 6b where positioning pins provided to a recording and reproducing device are inserted when this cartridge is loaded at a prescribed position of the recording and reproducing device, small holes 7a and 7b for displaying information on the kind of a magnetic disk 2, etc., and information recording prevention detecion parts 8a and 8b are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cartridge such as a floppy disk rotatably containing a disk-shaped recording medium such as a magnetic disk.

Traditionally, cartridges with rotatable magnetic disks, such as floppy disks, have magnetic layers on both sides of the dfB disk, but with single-sided specifications, information is recorded and played back only on one side of the magnetic disk. The utilization efficiency of disks, that is, the storage capacity of information, was small. In addition, for double-sided specifications, there are two recording/reproducing (writing/reading) heads corresponding to each side of the magnetic disk.
Some devices record and reproduce information on both sides of a magnetic disk by using two recording/reproducing heads and selectively operating them. Since a mechanism and an electric circuit are required to selectively operate the two recording/reproducing heads, the recording/reproducing device becomes complicated and large;
The cost was getting high.

The above problems are caused by the fact that conventional floppy disks have a square shape and have asymmetrical openings for inserting recording/reproducing heads.

The present invention provides a cartridge main body case having a rectangular shape, an opening into which a drive body for rotationally driving a recording medium such as a magnetic disk can be inserted, and an opening for recording information on the recording medium or the recording medium. The arrangement of the opening that allows the insertion of the head for reproducing information recorded on the cartridge (including when recording and reproducing information), as well as the cartridge positioning hole and the information recording (writing) prevention detection section. By specifying the casting relationship, it is possible to record and reproduce information on both sides of the recording medium using a single recording/reproducing head, and it is possible to record and reproduce information on both sides of the recording medium even though it is small. It is an object of the present invention to provide a cartridge that can be easily simplified, downsized, and lowered in cost.

Hereinafter, the present invention will be explained based on illustrated embodiments.

In the drawings, 1 is a rectangular cartridge body case made of, for example, a synthetic resin molded product;
Inside it is a magnetic disk 2, which is a disk-shaped recording medium.
is built in so that it can be rotated.

Incidentally, magnetic layers are formed on both sides of the magnetic disk 20, so that information can be recorded on both sides.

3 is a drive body (
Although this is not shown, the first opening 4 allows the insertion of the magnetic disk (provided in the recording/reproducing device), and the first opening 4 allows information to be inserted into the magnetic disk 2, or information recorded on the magnetic disk 2. This is a second opening into which a head for reproducing information (also not shown, but provided in the J recording/reproducing apparatus) can be inserted. Reference numeral 5 denotes a vertical opening for detecting the rotation of the magnetic disk, which is provided in the cartridge body case 1 and faces the rotation trajectory of one hole (not shown) for detecting the rotation of the magnetic disk, which is drilled at a suitable position in the magnetic disk 2. This is because when this cartridge is loaded into a recording/playback device, a light emitting element and a light receiving element are respectively placed on both sides of the cartridge where the sensor opening 5 is located, so that the magnetic disk 201 rotates. This is to obtain 91 pulses as rotational position detection pulses.

Here, the first opening 3, the second opening 4, and the sensor opening 5 are arranged so that they are located on the longitudinal center line x-x' of the cartridge main body case 1, and the cartridge They are provided on both side portions 1m and 1b of the main body case 1, respectively.

In addition, the cartridge is installed on both sides of the cartridge body case 1 near the front end (the front side in the drawing) and at a location symmetrical with respect to the longitudinal center line x-x' of the cartridge body case 1. Record/re-record? A cartridge positioning hole 6*+6b into which a positioning bin (not shown) provided in the recording/reproducing device is inserted when loading the cartridge into a predetermined location of the device, the type of magnetic disk 2 (magnetic material), etc. Small holes 7a, 7 for displaying information on
b and information recording prevention (write prevention) detection unit 8 t
+8b is provided. Note that the small hole 7 at
7b may be omitted if necessary. The information recording prevention detection section 8' + 8b is of a sliding type, for example, and when 81 is pushed into the cartridge body case 1, a recess is formed and one side of the cartridge body case 1 is inserted. This is to make it no longer possible to record on one side of the magnetic disk 2 corresponding to the surface portion 1a side. Needless to say, if the other side 8b is pushed in to form a recess, information cannot be recorded on one side of the magnetic disk 2 corresponding to the other side 1b of the cartridge body case 1. Of course, it is obvious that the recording/reproducing apparatus is equipped with a device for detecting the presence or absence of recess formation by the information recording prevention detection section 5atsb.

As described above, the present invention has a rectangular cartridge body case rotatably housing a disk-shaped recording medium capable of recording information on both sides, and a drive body for rotating the recording medium inserted therein. a first opening made of;
a 20th opening into which a head for recording information on the recording medium or reproducing information recorded on the recording medium can be inserted; a cartridge registration positioning hole; and an information recording prevention detecting section; The first opening and the second opening are provided on both sides of the main case at locations located on the longitudinal centerline thereof, and at locations symmetrical with respect to the longitudinal centerline. , since at least one of the cartridge positioning hole and the information recording prevention detection section is provided,
Even if the cartridge main body case is rotated 180 degrees around the longitudinal center line, the positional relationship of each part remains unchanged.Therefore, the recording/reproducing head, the drive body for rotating the magnetic disk, and the cartridge positioning pin. For example, when inserting this cartridge into a recording/reproducing device equipped with an information recording prevention detection device, etc.,
Information can be recorded and reproduced on both sides of the recording medium by inserting and loading it in the direction indicated by the arrow with the side facing upward, or conversely, by inserting and loading it in the direction indicated by the arrow with the other side 1b facing upward. Therefore, even if the cartridge is made small, the information storage capacity can be increased. Also,
On the recording/reproducing device side, since only one head is required for recording/reproducing, the structure is simple and miniaturization and cost reduction are easily possible.

[Brief explanation of the drawing]

The drawing is a perspective view of a cartridge according to an embodiment of the present invention. 1...Cartridge body case, 2...
・Magnetic disk, 3...First opening, 4...
...Second opening, sa, 6b... Cartridge positioning hole, 8L, 8b... Information recording prevention detection section.

Claims (1)

[Claims] A rectangular cartridge body case rotatably houses a disc-shaped recording medium that can record information on both sides, and a first opening into which a driving body for rotationally driving the recording medium can be inserted. a second opening into which a head for recording information on the recording medium or reproducing information recorded on the recording medium can be inserted; a cartridge positioning hole; and an information recording prevention detection section. death,
The first opening and the second opening are provided on both sides of the cartridge body case and at locations located on the longitudinal center line thereof, and are symmetrical with respect to the longitudinal center line. Where is the car? +7
A cartridge characterized in that it is provided with at least a side of the side positioning hole and the information recording prevention detecting section.