DORAN 4"x 5" developing tank

[andrea_milano]

Dear contributors,

I just bought such a tank and everything is pretty clear to me eccept how to agitate the film while developing,stopping (wether that is necessary or not.......) and fixing. Does anybody have the instructions for this tank and would be so kind to mail a copy to me or give me the address of the american company DORAN enterprise inc.(based in Milwaukee I believe). Thanks

[tony_brent]

It is like the old Yankee tank. In fact, you can see the "FR" logo in

the casting in a couple of places. You agitate in the direction

parallel to the slots, but be VERY gentle. These tanks are very prone

to producing a higher density area in the region where the film is

held in the slots if you slosh it around too much. I have found a

gentle straight back and forth motion, maybe 4 or 5 cycles once a

minute is plenty. You may find you need to lengthen the time to

compansate for a more gentle agitation to maintain the contrast you

want.

 

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Doran Enterprises Inc

2779 South 34th St

Milwaukee WI 53215

414 645 0109

[rob_weststrate1]

I have the instructions here in front of me, I can't seem to be able

to fire up my scanner so here goes:

(snip)

Loading:...with the pouring spout of the tank in the lower right hand

corner, place the loading guide on the first pair of ridges so that

the slot in the guide is directly over the first film groove on each

side....The loading gide is moved across the top of the tank one

ridge at a time by pressing down and forward with the thumbs and

raising the front edge of the loading guide with the index fingers

until the guide moves forward one pair of ridges.....You will insure

perfect results by loading films so that the emulsion side is on the

inside of the curve.....Tap the films gently down to the bottom of

the tank and slide the metal retainer bar down until it comes gently

in contact with the films. Depress the retainer bar firmly down upon

the deges of the film making certain that the film takes the semi

circular shape of the grooves on the inside wall. Replace the top

plate making sure that the cup of the air vent is at the opposite

corner of the pouring spout. Put the cover on in the same manner. The

white light may now be turned on and the films are ready for

processing.

Development: Since it is only necessary that films be completely

covered, the Doran tank makes possible an economy in the use of

processing solutions. Following as a table showing the quantities

required to cover the various sizes of film accomodated by the tank:

4 1/2 x 6 cm 750cc

2 1/4 x 3 1/4 and 6 1/2 x 9 cm 1150cc

3 1/4 x 4 1/4 1400cc

9 x 12 cm 1480cc

4 x 5 1600cc

 

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So that the devolopment may be troughout, the solution should be

poured in as rapidley as possible. It is advisable to make the

pouring operation a continuous one, starting with the full amount of

liguid in one vessel. You will find that the solution may be poured

in very rapidley, particularly if the stream is aimed directly into

the center hole.

 

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Agitation: Immediatly after pouring in the devoleper, grasp the tank

in the right hand with the air vent knob protruding between the thumb

and index finger; the thumb in the cover and the four fingers on the

side of the tank. Support the tank with the left hand. Move the tank

sharply back and forth, in a horizontal plane, away from and toward

the body. This method of agitation allows fresh devoleper to

continually come into contact with the emulsion side of the film.

Agitate for 10 seconds every minute during development.

 

<p>

 

Caution: Agitation in the wrong direction (perpendicular to emulsion

side of the film) may cause film to be jarred loose from its retainer

groove (snip)

 

<p>

 

Pfooh, hope this helps

Rob Weststrate