Thermal imagable waterless lithographic member
AssigneeVIM Technologies, Inc.
InventorsOded Danzinger, Avigdor Bieber, Michael Karp, Sergei Bonder
Life of this patent
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Abstract
A layered printing plate that attains a high degree of clarity and improved clean out. The printing plate may include an oleophilic substrate, a laser absorbing imaging layer and an oleophobic silicon layer. One embodiment utilizes an amine resin rather than a traditional polymer as the basic organic matter of the imaging layer, adds of colloidal silica into the imaging layer to improve the cleanout properties, and utilizes a substrate that absorbs IR radiation rather than reflects it.
Claims27
A waterless lithographic printing member, comprising:
- a. an oleophilic solid substrate;
- b. a laser absorbing imaging layer positioned above the substrate, wherein the laser absorbing imaging layer comprises an infrared absorbing substance;
- c. a silicone layer positioned above the laser absorbing imaging layer, the silicone layer having oleophobic characteristics;
- d. wherein the laser absorbing layer is comprised at least of approximately 15% by weight of a self-condensation oligomeric amine.
A waterless lithographic printing member comprising:
- a. an oleophilic solid substrate;
- b. a laser absorbing imaging layer positioned above the solid substrate and comprising infrared absorbing substance;
- c. an oleophobic silicone layer positioned above the laser absorbing imaging layer;
- d. wherein, the laser absorbing imagine layer comprises a dispersion of inorganic nano-particles.
A waterless lithographic printing member comprising:
- a. an oleophilic solid substrate;
- b. a laser absorbing imaging layer positioned above the solid substrate and comprising an infrared absorbing substance;
- c. an oleophobic silicone layer positioned above the laser absorbing imaging layer;
- d. wherein the substrate is constructed of a material that absorbs a substantial portion of the infrared radiation that is incident onto the substrate.
A method of creating prints using a waterless lithographic printing machine, the method comprises the actions of:
- creating a printer member that comprises an oleophilic solid substrate;
- a laser absorbing imaging layer positioned above the substrate, wherein the laser absorbing imaging layer comprises approximately 15-70% by weight of a self-condensation oligomeric amine and an infrared absorbing substance;
- and an oleophobic silicone layer positioned above the laser absorbing imaging layer;
- installing the printing member into an IR laser imaging device to expose an image onto the printing member;
- installing the imaged printing member onto a waterless lithographic printing machine;
- and
- obtaining impressions from the waterless lithographic printing machine.
Dependencies are inferred from the claim text.