EP 0405166 B1 1994-03-09 - Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine.
Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine.
Vorrichtung zur Bogenglättung am Druckzylinder in einer Bogenrotationsdruckmaschine.
Dispositif pour déplisser les feuilles sur le cylindre d'impression dans une presse rotative à feuilles.
DE 3920730 A
[origin: JPH0336033A] PURPOSE: To effectively and sufficiently smooth a printing sheet on an impression cylinder by swingably supporting an air flow nozzle at a swinging shaft parallel to an axis of the cylinder as a center, and connecting it to a driving member to conduct a swingingly moving forward and reverse at the time of an operating stroke of a printer. CONSTITUTION: In order to effectively and sufficiently smooth a printing sheet 1 on a circumference of an impression cylinder 3, air supply nozzles 8 at an interval to a printing gap 5 forward from the gap 5 are directed toward the circumference of the cylinder 3, swingably supported to a swinging shaft 9 as a center. And when a feeding direction of the sheet 1 is observed at the time of an operating stroke of a printer, it is connectible to a driving member 13 to swing forward and backward. The nozzles 8 are constituted as a lead type nozzle. An air flow in a turning angle range β1 is directed toward a rear end of the sheet by turning to a forward position from a return rotated position '0'. Thus, the sheet is raised from the circumference of a conveyor drum 2 and hence not stained.
IPC 1-7 (main, further and additional classification)
IPC 8 full level (invention and additional information)
CPC (invention and additional information)
Designated contracting state (EPC)
AT CH DE FR GB IT LI
DOCDB simple family
EP 0405166 A2 19910102; EP 0405166 A3 19910731; EP 0405166 B1 19940309; CA 2015948 A1 19901224; CA 2015948 C 19950117; CN 1017034 B 19920617; CN 1048353 A 19910109; DE 3920730 A1 19910110; DE 3920730 C2 19911010; JP H0336033 A 19910215; US 5086698 A 19920211