I have a an old BJC-5100 from Canon of which the normal paper-feed mechanism for the stock A3-paper is busted but there is a manual feed slot below it that accepts cardboard of a certain thickness (yet to be tested). But the question is do Canon inks resist the etching of PCB production? I would proceed only when I have certainty that the ink resists the process and the result is within amateur satisfaction.
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Canon BJC 5100 A3-printer
2011-03-24 by serge.vereecke