The bar codes and other makings are placed on Cine film at the same time it is perforated. many of the data fields are specific to movie use, such as documenting the Strip and master roll number and the perforating machine used to produce a given stand of film. every foot of 35mm also has a footage number which is useful to film editors to match scenes back to the actual camera negative. The system tries to make sure that these numbers don't repeat any more often than needed.
For sheet film I would expect that you would only see a generic "Kodak" or perhaps Kodak Safety film, as they might have to do tooling to print anything else.
Well there's no tooling now, I believe it's all digital now, but really I think it's a price point. I do hope it says Double-X just because otherwise people might not believe me hah!
~Stone | "...of course, that's just my opinion. I could be wrong."~Dennis Miller