Abstract: Printed sheets are delivered from a printer to a coating machine which feeds the sheets successively to a coating nip formed between a coating cylinder and an impression cylinder. A transport mechanism advances the sheets through the coating nip. The arrival of each sheet is sensed, and a control unit determines a speed necessary for each sheet to be initially fed in order to reach the coating nip simultaneously with an image area of the coating cylinder and with grippers of the transport mechanism, as well as at a speed equal to a surface speed of the coating cylinder. Independently driven rollers advance each sheet at that sheet's determined speed (e.g., acceleration or deceleration).

Abstract: An apparatus and method for improving print quality in a rotary offset press includes a variable speed servo motor for selectively applying a driving or braking action to a form roller in contact with a plate cylinder. The servo motor may be directly coupled to the form roller by a belt drive independent of the press drive and controlled to maintain a selected surface speed differential between the plate cylinder and the form roller during printing.

Abstract: An apparatus and method for improving print quality in a rotary offset press includes a variable speed servo motor for selectively applying a driving or braking action to a form roller in contact with a plate cylinder. The servo motor may be directly coupled to the form roller by a belt drive independent of the press drive and controlled to maintain a selected surface speed differential between the plate cylinder and the form roller during printing.