FIELD: printing equipment. SUBSTANCE: printer has carrier feeding system, ink supply mechanism movable relative to carrier along closed guiding rail with power supplying bars, precise positioning creasing rule and printer control unit. Carrier feeding system has shafts positioned in vertical plane. Feeding shaft is provided with reversible engine. Tension shafts are positioned at the top and underneath feeding shafts and connected with reversible shafts through magnetic couplings. Ink supply mechanism has at least one carriage with power supply brushes, receiver which may be filled with air through readily detachable lock, controller equipped with transmitter-receiver and optical detector electrically connected with controller. Electric valves are positioned between ink charging vessels and readily detachable locks of system for additional charging of ink vessels. Ink charging vessels are disposed on carriage and provided with level sensor. Electric valves are connected with printer control unit. Locks are positioned at guiding rail turning locations. Such construction allows single-sided printing on two carriers. EFFECT: increased efficiency, enhanced reliability in operation and improved printing quality. 2 cl, 5 dwg
