| 摘要 |
Two guides (15, 16) which can be slid backwards and forwards relative to each other are mounted on brackets (11, 12) inside the cassette, each bracket having two toothed bars (112, 113, 122, 123) pointing towards the opposite bracket, all the toothed bars being parallel to each other. The brackets can be moved in the same direction as the guides, which can be secured to the toothed bars. Toothed wheels (132, 133) between the toothed bars are used to move the two guide brackets, and therefore the guides, simultaneously. The guides can also be at right angles to the sliding direction of the brackets. |
