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US 4,063,507 AGranted
Process for burning in planographic printing plates
AssigneeFuji Photo Film Co., Ltd.
InventorsTadao Toyama, Masaru Watanabe, Harumasa Kitago
Life of this patent
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Abstract
A process for producing a planographic printing plate comprising subjecting a light-sensitive planographic printing plate member to a burning in wherein the light-sensitive planographic printing plate member is treated with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof, prior to the burning in.
Claims9
A process for producing a planographic printing plate comprising exposing and developing a light-sensitive printing plate;
- coating the exposed and developed surface of said plate with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof;
- drying said coating and then subjecting said treated plate to a burning-in without removal of said coating composition from said surface whereby printing can be carried out without applying a conventional surface smoothing treatment after the burning-in.
Dependencies are inferred from the claim text.