| 摘要 |
PURPOSE:To simplify the structure of a titled device by forming a conductive pattern on the inside wall surface of a cassette case containing an erase head, and providing a constituting element of an erasing circuit on said pattern. CONSTITUTION:An adhesive layer 10 is formed in a state of a thin film on the inside wall surface of a lower case 3, and a conductive pattern 11 of an erasing circuit consisting of a copper foil is formed on said layer 10. Constituting elements of the erasing circuit such as capacitor 12, a transistor 13, a resistor 14, a light emitting element 15, etc. are provided on the conductive pattern 11. A lever 17 of a limit switch 16 contacts a wire spring 9, and it is opened and closed by advancing and moving backward of an erase head 8. A power source battery is provided on one corner of a case 1, and contacts battery contact plates 19, 20. In this way, by constituting the erasing circuit by forming the conductive pattern 10 on the inside wall surface of the lower case 3, a rib for supporting and fixing a distributing board becomes unnecessary, and the structure is simplified. |
