Method for Printing A Substrate

Abstract

A method for printing on a substrate, wherein the substrate is printed upon with a plate-based printing process, i.e., an offset printing process, and with a plateless printing process, i.e., an inkjet printing process, inline with the plate-based printing process. In accordance with the invention, the printing resolution of the plateless printing process is determined depending on a printing speed of the plate-based printing process.

1 .- 8 . (canceled) 
     
     
         9 . A method for printing on a substrate,
 determining a first printing resolution of a plateless printing process based on a printing speed of a plate-based printing process inline with the plateless printing process; and   printing on the substrate with the plate-based printing process and the plateless printing process at the determined printing speed of the plate-based printing process.   
     
     
         10 . The method according to  claim 9 , wherein a second printing resolution of the plateless printing process transverse to the transporting direction of the substrate is independent from the printing speed of the plate-based printing process. 
     
     
         11 . The method according to  claim 9 , wherein the first printing resolution of the plateless printing process is in a transporting direction of the substrate. 
     
     
         12 . The method according to  claim 10 , wherein the first printing resolution of the plateless printing process in a transporting direction of the substrate. 
     
     
         13 . The method according to  claim 11 , wherein the first printing resolution of the plateless printing process in the transporting direction of the substrate is determined such that when the printing speed of the plate-based printing process is less than or equal to a maximum printing speed of the plateless printing process at which printing can be performed at a maximum printing resolution, the first printing resolution of the plateless printing process in the transporting direction of the substrate corresponds to the maximum printing resolution of the plateless printing process. 
     
     
         14 . The method according to  claim 11 , wherein the first printing resolution of the plateless printing process in the transporting direction of the substrate is determined such that when the printing speed of the plate-based printing process is greater than a maximum printing speed of the plateless printing process at which printing can be performed at a maximum printing resolution, the first printing resolution of the plateless printing process in the transporting direction of the substrate is lower than the maximum printing resolution of the plateless printing process. 
     
     
         15 . The method according to  claim 13 , wherein the first printing resolution of the plateless printing process in the transporting direction of the substrate is determined such that when the printing speed of the plate-based printing process is greater than the maximum printing speed of the plateless printing process at which printing can be performed at the maximum printing resolution, the first printing resolution of the plateless printing process in the transporting direction of the substrate is lower than the maximum printing resolution of the plateless printing process. 
     
     
         16 . The method according to  claim 15 , wherein when the printing speed of the plate-based printing process is greater than a maximum printing speed of the plateless printing process at which printing can be performed at maximum printing resolution, the printing resolution of the plateless printing process in the transporting direction of the substrate is determined in accordance with the following relationship: 
       
         
           
             
               
                 
                   DA 
                   inkjet 
                 
                 = 
                 
                   
                     DA 
                     inkjet 
                     max 
                   
                   * 
                   
                     
                       v 
                       inkjet 
                       max 
                     
                     
                       v 
                       offset 
                     
                   
                 
               
               , 
             
           
         
       
       where DA inkjet  is the first printing resolution of the plateless printing process in the transporting direction of the substrate, DA inkjet   max  is the maximum printing resolution of the plateless printing process, v inkjet   max  is the maximum printing speed of the plateless printing process at which printing can be performed at the maximum printing resolution DA inkjet   max , and v offset  is the printing speed of the plate-based printing process. 
     
     
         17 . The method according to  claim 9 , wherein the first printing resolution of the plateless printing process is determined depending on a maximum printing speed of the plate-based printing process so that the first printing resolution of the plateless printing process is constant and is independent from an actual printing speed of the plate-based printing process. 
     
     
         18 . The method according to  claim 9 , wherein the first printing resolution of the plateless printing process is determined depending on an actual printing speed of the plate-based printing process so that the first printing resolution of the plateless printing process is variable. 
     
     
         19 . The method according to  claim 9 , wherein the plate-based printing process is an offset printing process and the plateless printing process is an ink jet printing process.