PRINTING DEVICE FOR ROLLER PRINTING MACHINE Russian patent published in 1998 - IPC

FIELD: polygraphy. SUBSTANCE: printing device has two cooperating cylinders 1,4 defining printing gap and provided with printing members 2,5 separated by slots on cylinders 3,6. Paper web 7 extending through printing gap in moved in pilger-pitch mode to provide for printing of adjoining strips. Position of cylinders 1,4 relative to their printing members 2,5 cooperating in printing gap may be offset for part of circle equal to difference between length S of circle of printing member and length of perimeter B of print. Therefore, printing zone has size similar to that of print and zone free from printing and providing access for drawing off paper web is respectively increased. EFFECT: increased efficiency by eliminating output loss during transfer to smaller strip. 2 cl, 4 dwg