Back to results
US 2012/0060710 A1Published application
Inkjet-imageable lithographic printing members and methods of preparing and imaging them
OwnerAlbert S. Deutsch, Eugene L. Langlaisinventors
Life of this patent
Estimating the term…
Abstract
Lithographic printing plates are imaged using an inkjet printer to imagewise apply a chemical or masking agent onto the plate surface. In some embodiments, the chemical causes an affinity change, thereby facilitating lithographic printing.
Claims9
1-24. (canceled)
A method of lithographic printing, the method comprising the steps of:
- (a) providing a printing member comprising a hydrophilic layer having an exposed surface, at least the surface of the layer undergoing a phase change from a hydrophilic state to an oleophilic state in response to an imaging fluid;
- (b) dispensing the imaging fluid in an imagewise pattern, the imaging fluid chemically reacting with at least the surface of the layer and inducing the phase change, thereby creating an imagewise lithographic pattern of hydrophilic and oleophilic areas on the printing member;
- (c) without developing the printing member to remove portions of the hydrophilic layer, sequentially applying an aqueous fluid and ink to the printing member, whereby the ink adheres only to the oleophilic areas of the printing member;
- and
- (d) transferring the adhered ink from the printing member to a recording medium.
2 more elements
Dependencies are inferred from the claim text.