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Originally Posted by Colquhoun Correct me if I'm wrong OnTheButton, but I think inkjet is more water-based and not solvent or oil based. That means that as long as the inkjet is dry, any oil-based spray should sit on top of the print and not loosen or bleed the image, provided you don't soak the paper with overspray. I'm sure something like a thermal wax-based print or color laser would be far more susceptible to oil-based or solvent-based sprays. |
No, you are not wrong in theory, I'm just talking from experience, not from hypotheticals.
Inkjets are typically either dye based (indoor) or pigment based (outdoor) inks. Niether are a true "water base" like acrylic or latex paints would be classified as. Nor are they "oil based" as enamels are. You can however clean up most inkjet ink, with water while they are still wet, but they are not considered to fall into the same category.
There
are solvent based ink-jets but I doubt this is what we are discussing here. These are large commerical "banner printer" types of ink-jet machines, and the ink and vapors can be very toxic if filters and exhaust systems are not correctly implemented.
Your typical HP, Canon, Epson home style inkjet printer is going to use aqueous inks which can be a mixture of different bases, depending on the color. (i.e. the black may be pigment based, and the colors dye based.)
Of course waiting until they are dry, (as with any artwork) goes without saying, but I guess I could have said it.
History has proven for us, that the "art" line of Krylon sprays are far better suited for the inquired purpose. Their fine spray will not soak or wrinkle the paper, or make the ink run, and go on smoother and are designed to protect artwork and preserve whatever they are printed on.
You might have good results with any type of crystal clear spray, on any type of medium, with any type of printer (so long as you don't try shellac!) I'm just vocalizing what I know works on inkjet prints, rather than trial and error experimentation.