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US 6,783,228 B2Granted
Digital offset lithographic printing
AssigneeEastman Kodak Company
InventorsThomas P. Szumla, David A. Niemeyer, Charles D. DeBoer
Life of this patent
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Abstract
An apparatus for offset lithographic printing including an offset lithographic printing press including a printing cylinder having a surface including a mixture of cationic colloidal silica, fumed alumina, and a polymeric amine; and an inkjet printhead disposed to print a digital image on the printing cylinder with an ink jet fluid including a pigment and a polymeric dispersing agent, which ink jet fluid dries to produce a surface active to oleophilic lithographic printing inks.
Claims8
An apparatus for offset lithographic printing comprising:
- (a) an offset lithographic printing press including a printing cylinder having a surface including a mixture of cationic colloidal silica, fumed alumina, and a polymeric amine;
- and
- (b) an inkjet printhead disposed to print a digital image on the printing cylinder with an inkjet fluid comprising a pigment and a polymeric dispersing agent, which inkjet fluid dries to produce a surface attractive to oleophilic lithographic printing inks.
Dependencies are inferred from the claim text.