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AssigneeHeidelberger Druckmaschinen AG
InventorGerhard Loffler
Estimating the term…
In the inking unit of a rotary printing press stand, a specified zonal adjustment for each print job is made to the ink ducts, which corresponds to the ink consumption required for the printed product in question. To create an ink distribution in the inking unit appropriate to the print run during the conversion of the inking unit from a previous job to a subsequent and new print job, the invention provides an improved method for the removal of the current ink profile so that the new ink profile can be established for the subsequent print job in a short time, without the necessity of emptying, cleaning and washing the inking unit. To change the ink profile before the beginning of printing, two process steps are proposed. First, the ink profile in the inking unit from the previous job is removed while the machine is running, and thereafter the ink profile in the inking unit appropriate to the subsequent print job is established under precisely defined conditions. Alternatively, a direct transition is made between the previous and subsequent required ink profiles.
A controlled process for producing a previous ink zone profile corresponding to a previous printing job in at least one printing stand of a printing press and for changing from the previous ink zone profile corresponding to the previous printing job to a subsequent ink zone profile corresponding to a subsequent printing job, said subsequent printing job being carried out immediately subsequent to said previous printing job, said printing stand comprising a printing plate cylinder for positioning a printing plate, an ink reservoir for holding a supply of ink and an inking mechanism for transferring the ink between said ink reservoir and said printing plate during operation of said printing stand, said inking mechanism comprising a plurality of inking rollers, a plurality of individually adjustable ink zone metering devices, at least one ink fountain roller positioned adjacent said plurality of individually adjustable ink zone metering devices, and at least one ink transfer roller for transferring the ink between said ink fountain roller and at least one of said plurality of inking rollers, each of said plurality of individually adjustable ink zone metering devices defining a substantially corresponding ink zone of said at least one printing stand, said process comprising the steps of:
A controlled process for producing a previous ink zone profile corresponding to a previous printing job in at least one printing stand of a printing press and for changing from the previous ink zone profile corresponding to the previous printing job to a subsequent ink zone profile corresponding to a subsequent printing job, said subsequent printing job being carried out immediately subsequent to said previous printing job, said printing stand comprising a printing plate cylinder for positioning a printing plate, an ink reservoir for holding a supply of ink and an inking mechanism for transferring the ink between said ink reservoir and said printing plate during operation of said printing stand, said inking mechanism comprising a plurality of inking rollers, a plurality of individually adjustable ink zone metering devices, at least one ink fountain roller positioned adjacent said plurality of individually adjustable ink zone metering devices, and at least one ink transfer roller for transferring the ink between said ink fountain roller and at least one of said plurality of inking rollers, each of said plurality of individually adjustable ink zone metering devices defining a substantially corresponding ink zone of said at least one printing stand, said process comprising the steps of:
Dependencies are inferred from the claim text.