SU781963A1 - Device for optical recording of information onto flexible disk - Google Patents

Description

(54) DEVICE FOR OPTICAL RECORDING INFORMATION

 FLEXIBLE DAYS

This invention relates to recordings and. information reproduction and can be used in devices for optical recording of information on a floppy disk. A flexible disk storage device containing a flexible carrier, a drive of its rotation, two pairs of clips located on opposite sides of the carrier magnetic heads mounted opposite each other, a carriage for moving them, and a cassette fixture for holding the clips and placing the disk carrier l are known. A disadvantage of this device is that when the flexible disk carrier accelerates, it contacts the walls of the envelope, which break the active surface of the carrier. In addition, the devices provided for processing the information of the above-mentioned device also contribute to an additional external influence on the recording medium both by direct influence on the coating and as a disrupter of stable rotation. It is also known a device for optical recording of information on a flexible disk, comprising a hub in which this disk is fixed, a hollow drive shaft rigidly connected to the hub, made with holes, a drive, a source of compressed air, and a shaft of the drive shaft and a zalc head and reproducing . The disadvantage of this device is that flexible disk media mounted on the drive shaft at a small distance from each other, at the time of acceleration or at the time of the release of one of them to prepare for recording (playback) is subject to alternating contact, which is causing damage to the coating and reducing the stability of the condition. At the same time, distortions of the processed information and reduction of the device reliability are possible. Flexible disk media are also not protected from dust and premature wear, which is important for high-quality performance, especially in optical -53 memory devices.

The purpose of the invention is to increase the reliability of the device.

The goal is achieved by the fact that the device is provided with an elastic transparent cassette rigidly coupled to the hub, in which a flexible disk is placed, and the hub is made with through radial channels located opposite the holes of the drive shaft.

The drawing schematically shows the device.

The flexible carrier - disc 1, mounted in cassette 2, is placed in the hub 3 on the active shaft 4, which has an internal cavity 5 and holes 6. The optical recording and playback head 7 is located outside the cassette. The compressed air source 8 is hermetically connected through the shaft cavity, its orifices and radial corners in the hub 9. The shaft was driven by the drive 10.

The device works as follows.

From the beginning of the rotational movement received by the disk information carrier 1 from the actuator 10, pressure is supplied from the compressed air source 8 through the axial cavity 5 through the radial holes 9 of the hub 3 vO into the elastic cassette 2. Consequently, the flexible carrier 1, located inside the cartridge 2, is counterbalanced by the action of compressed air, and due to the action of the centrifugal rotational forces - it is pulled out. When rotating the floppy disk 1 with the cassette

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2, the compressed air forms a flight ring, aligning the sides of the cassette, and the flexible disk 1 does not come into contact with it.

The use of the proposed device eliminates the vibrations of a flexible carrier arising from the external effects of the environment and mechanical damage to the working surface of the carriers.

Claims (2)

1. US patent 3879757, cl. 360-99, publ. 04/02/75. 2. For France No. 2250181, cl. 6 11 At 25/04, publ. 07/02/75 (prototype).