Jobo Expert drums: do the chems get the back?

[Robert A. Zeichner]

I have several drums of this type and most times, it is not a problem. Occasionally I'll have to clear a neg that has some residual dye stains. I prepare a small tray with fixer and a couple of minutes in that solution takes care of the problem. I then wash for a minute, hypo clear again and wash in my Gravity Works washer hanging in Kodak #4 5x7 hangers. A bit of a nuisance, but considering the consistancy of the develpoment possible with the Jobo system, it's a small price to pay.

[SAShruby]

Tim, it is the same problem wheter i dev 5x7 or 8x10
I presoak for 5 minutes but still have antihaltion dyes in spots and ocationally spots not completely fixed to.

Is the machine is properly leveled? What speed do you set? If table is not leveled, it might cause those problems.

[Jan Pedersen]

Peter, it is level at least within narrow tollerances. It is running on a Beseler motor base in one direction and would run of if not level.

[Nicolai Morrisson]

Thanks for all the replies! Every once in a while is OK, I just don't want to be double-fixing every last sheet. I wasn't planning on using T-MAX anyway.

[tim atherton]

It is running on a Beseler motor base in one direction and would run of if not level.

that could well be part of the problem

Have you tried reversing the drum several times during processing? (or introducing an "irregularity" on one of the roller wheels...?)

[Jan Pedersen]

The drum can unfortunately only run in one direction but i will flip the drum 180 degree next time i develop (Tomorrow) Just completing a couple of test sheets of TMY and again blue dye in a couple of spots after 20 minutes of rinse. No fixing problems this time though.
Is it possible that the Beseler is running to fast? I have a Unicolor motor base which is quite a bit slower than the Beseler. Did not try it casue it feels a little rinky dinky compared to the Beseler.

[Deane Johnson]

Tim:

I love your Immersive Landscapes. What an original idea, and what a great series.

Deane

[tim atherton]

Tim:

I love your Immersive Landscapes. What an original idea, and what a great series.

Deane

thanks... it's sort of incomplete and been left up in the air for a while.

I have a bunch more to scan, and also a whole lot of ideas for looking at the southern (where I am now) rather than the northern edge (where I was) of the Boreal forest and how it intersects with the city among other things

[tim atherton]

The drum can unfortunately only run in one direction but i will flip the drum 180 degree next time i develop (Tomorrow) Just completing a couple of test sheets of TMY and again blue dye in a couple of spots after 20 minutes of rinse. No fixing problems this time though.
Is it possible that the Beseler is running to fast? I have a Unicolor motor base which is quite a bit slower than the Beseler. Did not try it casue it feels a little rinky dinky compared to the Beseler.

Try the Unicolour and see if it makes a difference - I used one for quite a while with the same drum just fine (until I got an actual Jobo)

[Brian Ellis]

The fixer need to get to the back to clear the negative and that is a constant problem for me. I have used 50% more chemistry than called fore but still need to clear the film in a tray. Not that exited about the Expert drum (3005).