Lithographic printing plates for use with laser-discharge imaging apparatus

  • US 5,487,338 A
  • Filed: 08/16/1994
  • Issued: 01/30/1996
  • Est. Priority Date: 07/20/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. A lithographic printing member directly imageable by laser discharge, the member comprising:

  • a. a first durable, solid organic polymer layer that is oleophobic or hydrophilic;

    b. a solid oleophilic substrate underlying the first layer; and

    c. an imaging-radiation-reflective layer disposed between the first layer and the substrate;

    whereind. the first layer is characterized by ablative absorption of imaging radiation and the substrate is not.

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