Re: Printing white on black
Thanks much for the warning -> it seems that I will have to look for black paper or start "clear acrylic + finely ground activated carbon project" for printing white on black... Regards, Loris. 24 Mart 2009, Salı, 6:42 pm tarihinde, Katharine Thayer yazmış: > Loris, several years ago I had the same bright idea, to prepare black > paper by coloring white paper black with ink, and thought I'd share > my experience here for whatever it's worth to you. > > You were right to wonder whether "china ink" (by which I assume you > mean something like a sumi ink, or like what is often called here > "india ink") is waterproof. It didn't even occur to me to wonder; I > just assumed that when the bottle said "permanent" that meant it > wouldn't come off once it was dry. Imagine my surprise when I > started coating gum on it, and found that the wet coating lifted the > ink and spread it around, turning the white paint grey and turning > the underlying black background into a smeary mess. Sizing over it > would have the same effect; the wet brush would pick up the ink and > smear it around, spoiling the solid black background. > > I learned that there's a difference between "permanent" and > "waterproof" although at this distance I couldn't explain why > "permanent" is called "permanent" if it's not waterproof. At any > rate, I bought about eight different kinds of ink during this > exploration, and I found that if the ink was "permanent" but not > waterproof, then it wouldn't stay put when moistened, as described > above, and if the ink was "waterproof" then it formed an impenetrable > rubbery surface that repelled gum, or anything else wet that was put > on it. > > Someone on the list asked why didn't I just use Stonehenge black > paper (I had tried Arches Cover black and didn't like the coarse, > open texture). I did order a sheet of it to try, but it's still in > my flat file waiting to be gotten back to. It's not an expensive > paper, less than $2 a sheet, and I know Stonehenge prints gum well, > or did, some 10-15 years ago. > > Just some thoughts, from someone who wasted some time and money > going down that particular road, > Katharine >
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