ArtLoving.net

I have a friend who is an artist. He would like to make reproductions of original works to sell.
He can not use places like Staples and photo shops because they would like to copy digital work (like a photo).
Is there a place where he can take or ship his art work to be reprinted any size?
His artwork is on canvas, how do we transfer them into prints to sell?

Any professional printer can make reproductions of original work based on a good photographic transparency or high-res digital image.