Rog23 Posted July 8 Report Share Posted July 8 I'm getting what I assume to be roller marks on negatives processed in my T15RA. Is this most likely from the crossovers, or elsewhere? Any clues as to where I should be looking? Thanks. Quote Link to comment Share on other sites More sharing options...
davidlam Posted July 13 Report Share Posted July 13 No familiar with T15 model <but > I saw the marks are quite evenly located on film surface so I guess they might be from "Roller unit "surface Z009020 or Z009021 on V30, V50 IF these units exist also on T15 CD rack Quote Link to comment Share on other sites More sharing options...
davidlam Posted July 13 Report Share Posted July 13 Can try finding my earlier "Roller unit" photo in my another post in this forum .. my plane engines start... Quote Link to comment Share on other sites More sharing options...
Rog23 Posted July 18 Author Report Share Posted July 18 Thanks David. Interestingly it only appears to be happening on old (long expired) film. Maybe the base on that film is slightly thicker or something. If it becomes a problem on everything I'll definitely check the CD rack more thoroughly. My only remaining problem now is some small white deposits (like a white powder) on the back (non-emulsion) side of the developed film. They can be wiped off with a cloth, so not the end of the world, but wonder where they might be coming from? Stabilizer residue? Dirty rollers in the dryer? Quote Link to comment Share on other sites More sharing options...
Dave S Posted July 18 Report Share Posted July 18 If it wipes off it's usually happening in the STB. As the STB tanks are very small it's a good idea to dump the 3 STB tanks every month and mix fresh STB. White spots can be caused by the dryer temperature being a bit too hot, there is a post on here talking about this kind of issue. Quote Link to comment Share on other sites More sharing options...
Rog23 Posted July 19 Author Report Share Posted July 19 Thanks Dave. I had wondered about the dryer temp and had already brought it down from 55 to 50 degrees. The film still comes out dry at 50, but the white spots remain. I might try going even lower, because one never really knows how well it's calibrated anyway. The STB is fresh, but I might try adjusting the dilutions or run a couple of rolls just with distilled water to see whether it makes any difference. Having said that, I see in the post you reference that the guy had been plagued by his issue for months if not years, so perhaps I should consider myself lucky that it wipes off reasonably easily and not worry about it too much! Quote Link to comment Share on other sites More sharing options...
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