Presstek, Inc.

Travis Softic

Kevin Ray

Michael Karp

Oren Etziony

Alan Doyle

Geula Zegnioyev

Maria Sypek

Thuan Nguyen

Dry, ablation-type, nitrocellulose-containing lithographic printing members include dual adjacent imaging layers, both including an absorber and at least one containing a binder (which may include or consist essentially of a melamine resin). The absorber of the nitrocellulose-containing layer is a pigment and this layer contains no absorbing dye, while the absorber of the other imaging layer includes or consists essentially of a dye.

Ablation-type lithographic printing members having improved exposure sensitivity and related methods

The blanket cylinder of a printing press is used to remove oleophobic debris from an imaged dry printing member. Following imaging&#x2014;e.g., imagewise exposure of the printing member to radiation that ablates the layer below the oleophobic layer, or de-anchors it from the oleophobic layer without ablation&#x2014;the printing member is brought into rolling contact with the blanket cylinder, and the press is operated 'on impression.' This rolling contact may remove not only the oleophobic top layer but ablation debris of the underlying imaging layer as well.

Dry printing with simplified plate cleaning

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Springfield, MA, United States of America

Travis Softic