FIELD: engineering of disk cartridges for recording and reproducing information.
SUBSTANCE: disk cartridge is made by positioning optic disk in the body, recording surface of which contains circular zones: internal zone, holding zone, transfer zone, information recording zone and edge zone. Identification information of disk cartridge is recorded in transfer zone of optical disk so, that it is discernible from outside the body.
EFFECT: it is possible for user to find out, what content is recorded in disk cartridge without reproducing said content.
3 cl, 10 dwg
