B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
B05D 1/28 (2006.01) B05C 1/08 (2006.01) B05D 7/14 (2006.01)
Patent
CA 2113535
A method and apparatus for coating a metallic substrate with an oily substance. Use is made of a support member having a ceramic coating comprising an oxide ceramic material, onto which is applied the oily substance to form a film of the oily substance uniformly covering the surface of the ceramic coating, the film of oily substance breaking down into micro-droplets having substantially uniform size and distribution. The micro-droplets of oily substance are thereafter transferred onto a surface of the metallic substrate without substantially altering the size and distribution of the micro-droplets, thereby coating the surface of the metallic substrate with the oily substance. The invention is particularly useful for coating the positive electrode of a high-speed electrocoagulation printing apparatus with an olefinic substance containing a metal oxide.
La présente invention concerne un procédé et un appareil permettant d'appliquer une substance huileuse sur un substrat métallique. On utilise un support ayant un revêtement céramique comprenant une céramique oxydée et sur lequel on applique la substance huileuse afin de former un film qui couvre uniformément la surface du revêtement céramique. Le film de substance huileuse se divise en microgouttes qui ont une taille et une répartition sensiblement uniformes. Ces microgouttes de substance huileuse sont ensuite transférées sur une surface du substrat métallique sans modification notable de leur taille ni de leur répartition, ce qui couvre la surface du substrat métallique de la substance huileuse. La présente invention est particulièrement utile pour couvrir l'électrode positive d'un dispositif d'impression ultra-rapide par électrocoagulation d'une substance oléfinique contenant un oxyde métallique.
Castegnier Adrien
Gadbois Gilles
Elcorsy Technology Inc.
Ogilvy Renault
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