So I've recently been shooting a bunch of TMY-2, along with other 120 film.
In understanding that it's a backing paper issue, I wanted to actually analyze the backing paper differences that might help people know if they might have an issue.
So...
Here are 6 rolls
2 HP5+
2 TMY-2 (pre-backing paper change)
2 TMY-2 (post-backing paper change)
It appears that there were differences even between batches of the new backing paper, not just the ink, but the white paper itself seems to be of different translucency levels (what I mean is that in one on the left you can clearly see through the white paper to the black backing, while another is "whiter" and less able to see through to the black backing.
There's also a difference between them in terms of the black edging where one has "bleed" and the other black edge ends and white paper beings before the edge.
Furthermore, there seems to be a difference in the ink amounts for sure.
EDIT: This is the post-change ink...
This is the ink on the more transparent roll that has full bleed to the edge with the ink.
And this is the one that the edge stops and then white appears before the edge. This is the one that seems to have the most ink, so much so that it almost is raised and has a visible texture to it, although it doesn't FEEL like it use a texture, there is a definite "shine" to the ink, more than the others and it seems thicker with more visible texture.
For comparison, here's the HP5+ which has so little ink that it has patches on the numbers where no ink exists, as if they were running out of ink (most likely on purpose to limit the amount of possible ink contamination).
EDIT: it appears that the paper that had the THICKER ink, is from before Kodak made its change over to the new backing company. And that the initial picture above is from the NEWER batches that have issues. I made an ass out of myself by ASSuming that the rolls that appeared to have a heavier ink must be the newer ones. I am thoroughly apologetic about this, however this is still going to be somewhat helpful I suppose when I develop since I do have one roll from batch 0151 002 date 11/2017 that is part of the list of "don't even bother" batch numbers. So I guess the lesson is, you can't always go by a visual inspection of the ink on the paper itself. END EDIT.
Hope this helps people.
I have NOT developed the film yet, but I'll let people know when I do, probably by Tuesday.
It will be interesting to see if the one with the heavy appearance of ink is the culprit or if I'll get something unexpected.
I hope this helps people in some way.
~Stone