Photopolymer comprising lithographic plates and process for...

B - Operations – Transporting – 41 – N

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101/61

B41N 1/00 (2006.01) B41N 3/03 (2006.01)

Patent

CA 1099147

PRECIS DE LA DIVULGATION: La présente invention concerne des plaques litho- graphiques à base de photopolymères et leurs procédés de mise en oeuvre. On utilise une couche d'ancrage à base d'ester hydrophobe de colloïde susceptible d'être régénéré sous forme de colloïde hydrophile. Après insolation sous un original, le photopolymère est réticulé dans les zones insolées. Il est solubilisé dans un révélateur dans les zones non isolées, la couche d'ester hydrophobe étant régénérée sous forme de colloïde hydrophile. On obtient des plaques lithographiques de longévité améliorée.

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