TAPE TENSION CONTROLLING DEVICE

PURPOSE:To easily perform minute adjustment, by providing a sectorial shaped adjusting lever having a rotating center a joint and a spring giving a rotating torque to a tension detection arm, and controlling a pin on the adjusting lever by an operation lever. CONSTITUTION:One end 7a of a spring 7 is latched to another end 17 of an L- shaped tension detecting arm pressing a tape 1 on a pin 2 of one end supported at a shaft 4. Another end 7b of the spring 7b is latched to a sectorial adjusting lever 15. The adjusting lever 15 is borne 27 with a chassis (not shown) near the spring latch 17, pressed on a clutch lever 23 and a friction force is given with a spring 22. A pin 29 implanted to the adjusting lever 15 and a pin 31 on the chassis are clipped with a torsion spring 28 to provide a returning force to a center position O. An operation lever 33 can be turned around a shaft 35 and is interlocked with the adjusting lever 15 via a pin 36 and a long hole 37. Thus, the operating lever 35 is controlled, allowing to perform minute adjustment of tape tension easily.