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AssigneeRicoh Company, Ltd.
InventorsAkira Suzuki, Keiji Kubo, Suguru Kunitake, Fumiaki Arai
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The present invention provides a spark-recording type printing method and a spark-recording material for use in the method, which printing method comprises the processes of: forming an image on a spark-recording material by the spark-recording method, said spark-recording material comprising a support and a layer of metal deposited thereon by vacuum evaporation, and, if necessary, being provided with a colored layer interposed between said support and metal layer, and if further necessary, being provided with a protective layer which is easy to desensitize and/or a desensitized layer which requires no desensitization treatment as formed on said metal layer; and conducting offset printing by employing said spark-recording material having an image formed thereon as a master either after subjecting it to desensitization treatment when it is not provided with said desensitized layer or directly when it is provided with said desensitized layer.
A spark-recording material for use in offset printing, which comprises a support, a colored layer based on oleophilic resin and colorant, a layer of metal deposited by vacuum evaporation, a protective layer based on either (a) hydrophilic polymer or (b) polymer and acid-soluble polyvalent metal compond, and a desensitized layer based on desensitizing substance.
A spark-recording material for use in offset printing comprising a first support layer of paper and the following layers in successive superimposed relationship:
Dependencies are inferred from the claim text.