Printing-machine cylinder, especially an impression cylinder, for a sheet-fed rotary printing machine, and method of production
AssigneeHeidelberger Druckmaschinen AG
InventorsWilli Becker, Andreas Fricke
Life of this patent
Estimating the term…
Abstract
A printing-machine cylinder includes a basic cylinder body and a covering element fitted to the basic cylinder body, one of the basic cylinder body and the covering element being formed with a multiplicity of recesses connectable to one of a suction-air source and a blast-air source and having, in the region of the recesses, through-channels extending from the recesses to the peripheral surface of the covering element and defining blasting/suction sections for acting upon the underside of a sheet conveyed on the peripheral surface of the cylinder; a printing machine Including the cylinder; and a method for producing the cylinder.
Claims23
A printing-machine cylinder comprising:
- a cylinder body having a multiplicity of channels connected to one of a suction-air source and a blast-air source;
- a covering element fitted to said cylinder body and having a multiplicity of through-channels with channel sections of varying diameters, at least two through-channels of said multiplicity of through-channels being connected to one of said channels and extending to a peripheral surface of said covering element defining blasting/suction sections for acting upon a underside of a sheet conveyed.
A printing-machine cylinder, comprising:
- a cylinder body having a multiplicity of channels connected to one of a suction-air source and a blast-air source;
- a covering element fitted to said cylinder body and formed with a multiplicity of through-channels connected to said channels;
- a porous film fitted to said covering element, said porous film connected to said through-channels and having a peripheral surface defining blasting/suction sections for acting upon a underside of a sheet conveyed.
Dependencies are inferred from the claim text.