Flint Ink Corporation

Kevin P Kingman

Michael Vincent Oberski

Rick A Balyo

Mark D Latunski

Graham C Battersby

Dennis R Gelarden

A planographic printing apparatus and method is provided for single fluid lithographic printing using a plate cylinder having a generally neutral pH hydrophilic material in the non-image areas.

Lithographic printing method using a single fluid ink

A single fluid lithographic printing ink composition includes a hydrophobic phase and a hydrophilic fluid phase. The hydrophilic fluid phase contains water or a liquid polyol or both. The hydrophobic phase contains a hydrogen bonding vinyl polymer that can hydrogen bond with the hydrophilic fluid phase. The vinyl polymers are preferably branched, but remain soluble in the hydrophobic phase. The invention provides stable inks that can be used as single fluid inks with excellent fountain stability and resistance to toning.

Lithographic printing inks

The present invention provides a process of printing using a single fluid lithographic printing ink that includes a continuous phase and a discontinuous polyol phase.

Lithographic printing method

The present invention provides single fluid lithographic printing inks that include a continuous phase and a discontinuous polyol phase. The continuous phase includes an acid-functional vinyl resin. The polyol phase includes a liquid polyethylene glycol material. The invention further provides a method of making a single fluid ink composition and a process of printing using the single fluid ink of the invention with improved resistance to toning.

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Brownstown, MI, United States of America

Kevin P Kingman