| 摘要 |
<p>PURPOSE:To prevent a loss of self-reset, by always meshing a drive gear with at least one gear of either a gear for loading system or a gear for cam system. CONSTITUTION:The cam system gear 2 and loading system gear 3 to be meshed with the drive gear 1 are elastically supportably held by a gear supporting body 31, and the intermeshing of the cam system gear 2 and loading system gear 3 with the drive gear 1 is controlled by displacing the supporting body 31 up and down against its elasticity by a loading system lever 6 and cam system lever 7. Then, the intermesh is executed with either both the system gears at the same time or one system gear and with always at least one of those gears against the elasticity in accordance with each of the loading, transition segment and tape travel driving conditions, so that the self-reset will never be lost.</p> |
