Truth be known, many of us just swipe our clean, bare hands over the bare prints. Those us with archival leanings use a clean cotton glove. Recently washed hands are best because of slight moisture content killing static, or the cotton glove can be ever so slightly moist with some distilled water, as by pressing lightly against a slightly moist cloth. Best done with the print in the vertical position so dislodged dust falls to the ground rather than just moves to the side.
For really hard to get dirt a fine-pointed tweezers from the hobby or electronic store can save the day, also a useful tool for picking off dust between coats. Rest your hand on a piece of paper to avoid contact with the print.
Paint brushes are useful too, especially if they have been very slightly moistened then smacked-dry against a clean table edge. Or a piece of blue masking tape that has been slightly dulled by contact with a piece of paper can be used, but be careful.
Somehow the lint roller seems a little too rough, and probably wouldn't penetrate down into the more extreme canvas textures. Great for getting cat hair off the framing table carpet covering, however.
