Printing apparatus including a forme cylinder and method of preparing the forme cylinder for printing
AssigneeMAN Roland Druckmaschinen AG
InventorsHartmut Fuhrmann, Josef Gottling, Wolfram Fischer
Life of this patent
Estimating the term…
Abstract
The printing apparatus with a forme cylinder which has in its interior a first roller for winding off a printing foil which can be pulled onto the outer surface of the forme cylinder, and a second roller for winding up the printing foil which has been pulled onto the outer surface of the forme cylinder. The forme cylinder has in its outer surface a single opening for a recess into the interior of the forme cylinder. The first roller and the second roller are together arranged in the recess. The printing foil can be wound from the first roller onto the outer surface of the forme cylinder and from the outer surface onto the second roller.
Claims24
A printing apparatus comprising a forme cylinder, the forme cylinder having an outer circumferential surface and end faces, the outer surface defining a single opening, the forme cylinder having a groove in communication with the single opening, a first roller mounted in the groove and a second roller mounted in the groove, and a printing foil provided on the first roller and windable off the first roller through the opening onto the outer surface of the forme cylinder, around the outer surface of the forme cylinder, through the opening and onto the second roller, the printing foil being windable by rotation of the rollers.
A method of preparing a forme cylinder of a printing apparatus for printing, comprising providing a forme cylinder having an outer circumferential surface, providing a groove in the outer surface of the forme cylinder and first and second rollers mounted in said groove, means of a feeding device a supply roll with printing foil wound thereon toward the forme cylinder, clamping a first end of the printing foil to the first roller, winding a first portion of the printing foil from the supply roll onto the first roller, subsequently rotating the forme cylinder by an almost complete rotation during which rotation a second portion of the printing foil is wound onto the outer surface of the forme cylinder, clamping a second end of the printing foil to the second roller, and subsequently rotating the first and second rollers to move the foil along the outer surface of the forme cylinder.
A method of preparing a forme cylinder of a printing apparatus for printing, comprising providing a forme cylinder having an outer circumferential surface and a groove formed in the outer surface of the forme cylinder, placing a first roller and a second roller ill a cassette, wherein a printing foil is wound onto the first roller, moving the cassette by means of a swivel arm into the groove of the forme cylinder, pulling by means of a gripping device a second end of the printing foil from the first roller out of the groove, subsequently rotating the forme cylinder by an almost complete rotation during which rotation the printing foil is wound onto the outer surface of the forme cylinder, passing the printing foil into the groove and subsequently clamping the second end of the printing foil to the second roller.
Dependencies are inferred from the claim text.