Mamiya 645 Polaroid back: light leaks or what?

[LikeAPolaroid]

Hi.

It's the second pack of Fuji FP-100 that I get this strange things on the film - see attached. Both color and bw, different packs, so it's not a specific pack issue.

Looks to me it's a light leak, but: I have never, really never had this before. It happened all of a sudden yesterday afternoon. I had shot another pack like 15 minutes before.

What do you guys think it is? Anyone had this experience already?

 

[Q.G.]

Perhaps time to clean the rollers in the back?

 

[LikeAPolaroid]

Perhaps time to clean the rollers in the back?

Yes, that worked...Thanks, I managed to save almost an entire pack.