>>4010800For typical C-41 machine processing, the negs get taped to a leader card which drags it through a series of tanks like this. For scanning, it's fed in and mechanically pulled through the scanner. In either case, it's possible there's something in the way that is scratching the neg. It's possible too if there's an issue with the film canister itself, or your camera, that is causing the scratch. Hard to say.
