| 摘要 |
PURPOSE:To prevent an inadvertent shift of a dial display member, by releasing a locking means of the dial display member and displaying the number of recorded tracks only when a jacket housing is set into a jacket holder. CONSTITUTION:A display means 7 is provided at a part of a jacket housing 1 to display the number of magnetically recorded tracks on a magnetic sheet 2. A cover body 15 receives the tensile force of an elastic member 23 and closes a window part 3 for insertion of a magnetic head in case the housing 1 is not loaded to a magnetic recorder/reproducer. At the same time, a lock lever 27 is energized by a spring member 29 to have a contact between a contact part 31 and another contact part 32. In such way, an inadvertent turn is avoided for a dial display member 9 of the means 7. |
