Oops, was just junking a bunch of old test prints, came across one I had used for a while to start the ink flowing on a Fine Point Sharpie. Definite smearing migration of the ink out onto the Epson Premium Luster surface. Not a lot, but noticeable without a magnifier. This apparently occurred over time, I'm sure I didn't notice it at the time of marking. Some of the scribblings were made months after the print dried. The smearing is more noticeable on some scribbles than on others, don't know why.
Has anybody else seen this? I have never liked signing prints, now this. Good thing all the Sharpies signature are covered up with pencil-signed mattes, yikes!
Also...
Does anybody know a way to make really good white or gray opaque signatures using a old-fashioned technical pen, or some sort of pen that can write opaquely on RC surfaces? Have been experimenting with framing styles, I'm kind of liking using linen liners in place of paper mattes, with the liner right up against the edge of the print with no "writing border". Gives a perceived-classy oil painting look to certain types of images, but requires signing over the image. PS I know it's probably not archival.