Multiple prints in one Jobo print tank? Clips or not?

> I tried running two sheets in a 2830 tank this morning and the
> sheets slipped causing some overlap. Are people using the clips? I think
> Jobo claims you don't need them? Or should I just be more carefull putting
> the sheets in the tank?
>
> Nick

ISTM Jobo makes a set of clips for their drums, but perhaps that's only
for the film drums. In any case, I'd be concerned about agitation
moving the prints around, and I'd think clips would be a very good idea
even if Jobo says they aren't needed.

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I may be a scwewy wabbit, but I'm not going to Alcatwaz!
-- E. J. Fudd, 1954

Donald Qualls, aka The Silent Observer
Lathe Building Pages http://silent1.home.netcom.com/HomebuiltLathe.htm
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Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

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Nick Zentena - 11 Jul 2004 18:41 GMT

>> I tried running two sheets in a 2830 tank this morning and the
>> sheets slipped causing some overlap. Are people using the clips? I think
[quoted text clipped - 7 lines]
> moving the prints around, and I'd think clips would be a very good idea
> even if Jobo says they aren't needed.

The reason I'm wondering if I'm doing something wrong is I bought this
tank used. It came with two bags of clips but they've never left the sealed
bag. The new tanks supposedly now come with no clips.

Nick

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Donald Qualls - 12 Jul 2004 04:21 GMT

>>> I tried running two sheets in a 2830 tank this morning and the
>>>sheets slipped causing some overlap. Are people using the clips? I think
[quoted text clipped - 13 lines]
>
> Nick

I'm afraid I've given you what I have -- I've never even handled a Jobo
tank, though I've lusted after them many times on eBay.

Signature

I may be a scwewy wabbit, but I'm not going to Alcatwaz!
-- E. J. Fudd, 1954

Donald Qualls, aka The Silent Observer
Lathe Building Pages http://silent1.home.netcom.com/HomebuiltLathe.htm
Speedway 7x12 Lathe Pages http://silent1.home.netcom.com/my7x12.htm

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

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> I tried running two sheets in a 2830 tank this morning and the
> sheets slipped causing some overlap. Are people using the clips? I think
> Jobo claims you don't need them? Or should I just be more carefull putting
> the sheets in the tank?

Hi Nick,

I have processed two 8x10's and 4 5x7's at a time in the Jobo 2830
without clips and with no slippage. What I noticed is that I've needed
to play around with the sheets to get them to snap into place against
the slots just right. I've had times where it seemed like it snapped
into place but where there really was a bit of slack, so that the
sheet bowed away from the curve of the tank. I think that if you make
sure the sheet is snapped into the slots in such a way that the sheet
is snug against the surface of the tank, you should be ok.

--Phil

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Nick Zentena - 12 Jul 2004 19:08 GMT

>> I tried running two sheets in a 2830 tank this morning and the
>> sheets slipped causing some overlap. Are people using the clips? I think
[quoted text clipped - 11 lines]
> sure the sheet is snapped into the slots in such a way that the sheet
> is snug against the surface of the tank, you should be ok.

I guess I need to pratice some more in the light. I've got plenty of
negatives to print but doing them one at a time just leaves me further behind.

Thanks
Nick

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> I tried running two sheets in a 2830 tank this morning and the
> sheets slipped causing some overlap. Are people using the clips? I think
> Jobo claims you don't need them? Or should I just be more carefull putting
> the sheets in the tank?

I got it straight now. You need to be carefull to place the print next to
the right raised edge. Now I need more drying space. On the downside when
your developer dies now I loose two sheets of paper. On the upside the two
prints look kind of good. Sort of like B&W prints that have been toned blue.

Nick

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Donald Qualls - 18 Jul 2004 16:53 GMT

>> I tried running two sheets in a 2830 tank this morning and the
>>sheets slipped causing some overlap. Are people using the clips? I think
[quoted text clipped - 5 lines]
> your developer dies now I loose two sheets of paper. On the upside the two
> prints look kind of good. Sort of like B&W prints that have been toned blue.

Seems to me that rotary processing is a place where one-shot chemical
use is most desirable -- if a chemical can oxidize, it'll be much more
prone to do so in a rotary drum with a small amount of liquid, large
surface area, and lots of air in the tank.

Signature

I may be a scwewy wabbit, but I'm not going to Alcatwaz!
-- E. J. Fudd, 1954

Donald Qualls, aka The Silent Observer
Lathe Building Pages http://silent1.home.netcom.com/HomebuiltLathe.htm
Speedway 7x12 Lathe Pages http://silent1.home.netcom.com/my7x12.htm

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

Reply to this Message

Nick Zentena - 18 Jul 2004 17:12 GMT

> Seems to me that rotary processing is a place where one-shot chemical
> use is most desirable -- if a chemical can oxidize, it'll be much more
> prone to do so in a rotary drum with a small amount of liquid, large
> surface area, and lots of air in the tank.

That's true but my print developer gives me about 30+ 8x10s for 250ml of
developer. This has held steady so far. The tank requires 100ml of developer
at the very least so using the developer one shot would be expensive. I'm
actually kind of suprised how the developer dies right on schedule. I think
the bleach actually needs oxygen to work right so it's benefiting from the
process.

I take that back. Since switching to a pre-wet I'm
getting more prints then the claimed capacity for the developer. Partly I
guess from not having the paper suck up developer and partly from the
developer bottle staying full.

Nick

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