JOBO Sheet Film Tank System

Hello,

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I'm trying to get info about the "JOBO Sheet Film Tank System" that interests me. Though, I don't intend to use this system with any automated rotary system.

Do you think that it is possible to use those tanks (2551) by inversion intermittent-agitation as I would with the roll film? Is there a manual processing system that let be agitate at intermittent intervals?

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Thank you.

Mario,

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I Use a Jobo tank to hand develop my sheet film. Yeah it takes a lot

of chemistry (I fill it up and develop only 4 sheets at a time), but

chemistry is cheap (and re-useable). I agitate for the first minute,

then 5 seconds every minute thereafter.

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Tony P.

Tony,

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How much chemistry do you need to put in it?

What about the uniformity of the development� are you happy with it?

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Thank for you time.

.

Mario,

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I fill my 2500 series tank until it's almost full - about 1.4 liters.

With the exception of the devoloper, I reuse all the other chemicals.

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Development has been uniform, and I'm more than happy to be able to

develop in the light.

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Cheers,

Tony P.

I do exactly as Tony, and it takes 1.4 liters. I've got a 2-reel

system, and only load the bottom reel. That way the chemistry has

space to mix when I invert. 1.4 liters covers the bottom reel

completely.

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I get very consistent results following this process. I'm now

experimenting with 2-bath (divided) developers so I can re-use the

developer.

Tony and Charlie,

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Can I ask you which times you use for your developement when you

agitate your tank by hand. Are you using the times quoted for small

tanks or sheet film?

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thank you,

Claudia.

Mario, Claudia,

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I used the manufacturer's recommendation for sheet film as a starting

point, and worked from there...

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Not that I'm displeased with my results, but if I had the money I

would purchase the double reel tank like Charlie (I use double reels

for my 35mm and MF development, and should be consistent).

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Cheers,

Sorry, forgot to add that I process 1 sheet of negatives (1 roll 35mm,

1 roll 120, 4 sheets 4x5) at a time.

I use one too. Mine holds a single reel, and I develop 4 sheets at a

time and use 1 liter of chemistry to allow some air space for better

mixing during inversion.

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I shoot Tri-X at 200 and develop in HC-110 dilution B for 6 minutes at

68 degrees with constant agitation. I roll forward 10 times, backward

10 times, invert twice, and slap to dislodge bubbles. Works great for

me. I use the developer one shot, but reuse the other chemistry.

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Dave

Hi,

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I've used the Jobo Reels and tanks for close to a decade now, in

various forms. I have done manual processing with a 12 sheet tank

(two reels) on a Beseler drum (with the alternating rotation), and

now use the Expert Dryms. With the sheet reels, I used 24 oz of

chemistry for 12 sheets, or 2 oz each. Now I use Xtol in the Expert

Drums, so I have to use more chemistry, but the results are worth it.

I have never tried intermittent agitation, as the drums are made for

rolling - I'd recomend picking up a Beseler roller (with alternating

rotation) and take advantage of the constant rotation/agitation.