OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE

摘要

PURPOSE:To secure the sufficiently large length of a track and to attain the effective use of the recording area on an optical card, by providing a card mounting stage holding an only end part of the card which is parallel to the track with use of a mounting stage. CONSTITUTION:A card mounting stage 15 contains grooves 51 and 52, and both ends of an optical card 11 which are parallel to its information track 12 are put into those grooves 51 and 52. The stage 15 also has recesses 53 and 53' where card holding members 54 and 54' are stored with free up-down movements. Both members 54 and 54' are depressed by a degree equal to the thickness of the card 11 to press the card from its rear side and then presses the upper surface side of the card 11 to the lower side surfaces of the parts 56 and 57 of the stage 15. Therefore the end part of the card 11 which is orthogonal to the track 12 is not held. At the same time, a plate spring 58 presses the card 11 the surface of a form when the card is inserted to fix the card set position. While the relative linear shift amount is increased between an optical head 13 and the card 11. This increases the length of the track 12.