Yes I think they are. Never had a problem with one. The only thing I don't like about TY discs is the top coating is a bit thin on the silver inkjet printable discs so that fingerprints show when you touch the disc. However the problem goes away sfter the disc gets printed on if the whole surface is covered by ink. Store bought Fugifilm (the ones made by TY) have the exact same problem & they are not inkjet printable. They record & play back (as audiodiscs) really great!!