Double-sided printing system for continuous forms

摘要

An intermediate buffer device for absorbing the difference in paper feeding speed between first and second printers is disposed therebetween. The first printer prints on a first surface of continuous forms in accordance with the top-surface printing data input from a host apparatus, and the second printer prints on the second surface of continuous forms in accordance with the back-surface printing data input from a host apparatus. A detecting portion detects the amount of retention in the intermediate buffer device. A printer controller stops printing and paper feeding by the second printer when the amount of retention falls below a first set value L1 and stops paper feeding and printing by the first printer when the amount of retention exceeds a second set value L2.