Has anyone tried printing a Vita cover at Staples? I ordered Danganronpa 2 used from GameStop awhile back and it had no cover art. I have the cover art on a USB drive ready to print just don't know if I'll run into any copyright issues. Also does it need to be in a PDF or anything? I currently have it in a PNG file.
Copyright is usually applied to the game itself, not the cover art. Unless there are registered intellectual properties (i.e. Mickey Mouse) on the cover, you should be fine. I honestly doubt a Staples employee would care either way, though.
In terms of printing quality, DPI is what matters 300 is benchmark for standard, 600 is the benchmark for high quality. For a PDF you can check the DPI in Adobe Reader (Advanced > Preflight > Options > Edit Preflight Profile). For a PNG, you can check by looking at its properties (Right Click the file > Properties > Details). TIFF and BMP file formats are typically the best for printing.
I've never tried printing my own cover art, but I know it's very difficult to get it exactly right. There are a lot of factors in printing. As long as you're okay with something fairly close, you shouldn't have issues though.