Patent ID: 6038968
Filing Date: 2000-03-21
Classification: B41L

Abstract:
A stencil printer comprisinga printing drum which is supported for rotation about its longitudinal axis and is provided with a clamp means for clamping an end portion of a stencil master, thereby holding the stencil master on the printing drum,a paper supply means which supplies printing sheets to the printing drum in synchronization with rotation of the printing drum,a first motor which drives the paper supply means by way of a first transmission mechanism,a second transmission mechanism which is operatively connected to the first transmission mechanism to be driven by the first motor by way of the first transmission mechanism, thereby rotating the printing drum,a phase adjustment means which can drive the second transmission mechanism with the first transmission mechanism held in place, thereby changing the relative phases of rotation of the printing drum and sheet supply operation of the paper supply means,a second motor which drives the phase adjustment means,a master feed means which feeds a stencil mater to a predetermined clamping position in which it is clamped by the clamp means on the printing drum,a drum position sensor which generates a detecting signal upon detection that the printing drum comes to a reference position where the clamp means is in said clamping position, anda control means into which the detecting signal is input from the drum position sensor and which controls the first and second motors, wherein the control means stops the printing drum in said reference position by driving the first motor to rotate the printing drum in one direction, stopping the first motor upon receipt of the detecting signal from the drum position sensor, and driving the second motor to rotate the printing drum to said reference position by way of the second transmission mechanism.