B - Operations – Transporting – 41 – N
Patent
B - Operations, Transporting
41
N
B41N 3/03 (2006.01)
Patent
CA 2238475
A method of preparing a substrate for a planographic printing plate comprises contacting a support, for example of aluminium or plastics, with a liquid having a pH of 9 or greater and comprising a silicate solution, for example sodium silicate solution, in which particulate material, for example of alumina or titania, are dispersed. The liquid when cured produces a hydrophilic layer on the support. A substrate per se and a printing plate are also described.
La présente invention concerne un procédé de préparation d'un support destiné à une plaque d'impression à plat. Ce procédé comprend la mise en contact d'un support, par exemple en aluminium ou en matière plastique, et d'un liquide dont le pH est supérieur ou égal à 9, et qui comporte une solution de silicate, par exemple une solution de silicate de sodium, et dans laquelle est dispersée une matière particulaire, par exemple de l'alumine ou de l'oxyde de titane. Quand il est cuit, le liquide donne une couche hydrophile sur le support. L'invention concerne aussi un support en tant que tel et une plaque d'impression.
Bhambra Harjit Singh
Organ Robert Michael
Horsell Graphic Industries Limited
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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