Lithographic printing plates for use with laser-discharge imaging apparatus

  • US 5,339,737 A
  • Filed: 05/13/1993
  • Issued: 08/23/1994
  • 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 topmost first layer which is polymeric; and

    b. a second layer underlying the first layer; and

    c. a substrate underlying the second layer;

    whereind. the second layer is formed of a material which is subject to ablative absorption of imaging infrared radiation and the first layer is not; and

    e. the first layer and the substrate exhibit different affinities for at least one printing liquid selected from the group consisting of ink and an adhesive fluid for ink.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×