Supply Russia - Le for the shake - gradual plotter comprise a key

摘要

PURPOSE: To hold a stretched sheet between a supply roll and a take-up roll by a method in which a reverse bias member is biased by a spring, deformed from a neutral position in the rewinding direction of the supply roll, and moved, and the movement is restricted by a stop. CONSTITUTION: To the end part of the arm 228 of a reverse bias member 231, the free end of a spring 242 is connected to the arm 228. During feed, by pulling a sheet 34 from a supply roll 30 to a take-up roll 32 in the arrow 35 direction, the supply roll 30 is rotated in the arrow A direction, and the reverse bias member 231 is rotated with a journalling part 234 until the arm 228 contact the stop 464 of a plate 64. When the arm is once put together with the stop 464, the journalling part 234 is rotated to the bias member, and a frictional torque is created against the rotation in the rewinding direction of the supply roll 30 so that tension is applied to the sheet between the supply roll 30 and the take-up roll 32.