A first transmitting unit transmits print hold information to other
printing apparatus connected on a downstream side in a data transmitting
direction. A second transmitting unit transmits printing data from a host
apparatus to the other printing apparatus. A third transmitting unit
transmits page deletion information to the other printing apparatus every
time a page is printed. When a printing condition cannot be satisfied, a
fourth transmitting unit transmits print-disable information to the other
printing apparatus, and releases a hold of the printing process in the
other printing apparatus according to the print-disable information.