UPPER INKING SYSTEM OF WEB-FED ROTARY OFFSET PRESS Russian patent published in 1997 - IPC

FIELD: manufacture of printing machines. SUBSTANCE: upper inking system has screen cylinder, sectional doctor engageable with screen cylinder, drum roller, form roller, offset roller and dampening system rollers engageable with form rollers. Dampening system rollers are located on the side opposite to sectional doctor. Sectional doctor is mounted under screen cylinder to interact with perimeter of screen cylinder in zone of its third and fourth quarters of its circumference, forming inscribed angle up to 30 deg relative to vertical plane running through axis of rotation of screen cylinder. Axes of rotation of screen cylinder and drum roller are located in plane running through them and intersecting the vertical plane passing through rotation axis of drum roller at angle from 30 to 60 deg. Axes of rotation of drum roller and form roller are located in plane running through them to intersect the vertical plane running through axis of rotation of offset cylinder at angle from 30 to 60 deg. In this case, all above-mentioned axes are intercrossed along the axis of rotation of drum roller. EFFECT: higher efficiency. 1 dwg