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  Photography Forum: Darkroom Techniques Forum: 
  Q. Contact printing

Asked by Elangovan S    (K=10675) on 1/16/2005 
I was trying to do contact printing of my 120 roll. I m unable to get the prints. I was using 15w light, I tried different exposures such 12, 6 and 4 secs. The print doesnt seem to be showing up. Cant figure out the cause!

The chemicals are at room temperature which is roughly 64F. Is that ok? What is the suggested temperature?

Or what else am I doing wrong here?

Thanks
Elangs.


    


Matej Maceas
 Matej Maceas  Donor  (K=24381) - Comment Date 1/16/2005
Short of making sure that you have the paper sensitive side up, the only thing that comes to my mind at the moment is simply to try longer exposures.





 ann clancy   (K=2014) - Comment Date 1/16/2005
how close is the bulb to the paper, would be one factor.
what is the density of the negatives? that is another factor. If they are overdeveloped they will need an increase in the exposure.

what are the times for the development of the paper.

it would help to have more detail or a scan of the negative






 Elangovan S   (K=10675) - Comment Date 1/16/2005
Shiny side of paper is the emulsion side, isnt it? If so, I m using the right side up for the exposure.

Well, I cant say the print does not show up, but the paper stays just gray and just ghost image showing.

So... any other ideas? :-)

Elangs.





 Elangovan S   (K=10675) - Comment Date 1/16/2005
The bulb was about 1.5 to 2 ft above the paper. The negative looks very healthy...

I used 90 secs for the paper development, 15secs for the stop bath and 3min for fixing.

Now, what I cant figure out is, did something gone wrong with papers, did I fog them out by mistake... :-(

Elangs.






 ann clancy   (K=2014) - Comment Date 1/16/2005
"healthy" means a lot of things,
either the paper was in with the non-emulsion side, up; the negative is over-developed ; or you just need more time.

If the paper is fogged, it will be gray in color, starting from the edges out and moving in to the center (usually,not not always), but there will definetly be a change in color of the paper.

try an exposure at 30 secs and see what happens.






 Nigel Smith   (K=3834) - Comment Date 1/17/2005
I would check the paper by developing a small piece straight from the pkt. If that's ok (doesn't go grey) then I'd expose a small piece to lots of room light and develop. That should go black. If it doesn't, mix up some new developer and try again.

What sort of paper are you using? 3 mins fixing is excessive for RC. What developer are you using and what dilution?




Phillip Cohen
 Phillip Cohen  Donor  (K=10561) - Comment Date 1/17/2005
Elangs,

Do you have a sheet of glass over the negatives to hold them flat against the paper? If not light may be getting under the negative and causing it to fog.

Does the area between the negative strips turn black? IF not you are not giving it near enough light, the paper is upside down, or your developer is bad.

Do as the others mentioned and see if the paper is fogged or developer is bad, this can be caused by extreme heat, or old age of the paper. I pitched out several old boxes of paper that had turned grey to the level that they were not usable.

What kind of paper are you using and what developer / dilution? Are the negatives color or black and white? If they are color negatives you will have a very low contrast image due to the orange mask and other colors in the emulsion. If you are using color negs and VC paper, try using a magenta filter to hold back the green light and expose for higher contrast or use grade 4 or 5 graded paper.

Phil





 Elangovan S   (K=10675) - Comment Date 1/17/2005
Nigel, Excellent suggestions. I will try em to find if my papers are in good condition.

Elangs.





 Elangovan S   (K=10675) - Comment Date 1/17/2005
Phillip,

I m using Arista RC Plus Medium weight paper with Arista paper developer (1:9 dilution), and Arista stop bath, and arista fixer.

Yes, I had a glass over the negatives before expose the negatives. I dont see any blact areas on the paper. After developing the whole paper looks muddy grey and the goasty images...

Kinda confused.

Elangs.






 Elangovan S   (K=10675) - Comment Date 1/17/2005
Ann, please confirm that the shiney side is the emulsion side. and the negatives are on the shiney side.

Will try some of the experiments that Nigel suggested to see what happens.

Thanks
Elangs





 ann clancy   (K=2014) - Comment Date 1/17/2005
the emulsion side of paper is shiney, the emulsion side of the negative is dull they go together,

you can print with the negative non-emulsion side next to the emulsion side of the paper, but if you have any writings on the negative they will print backwards.

I am going to review up others have said, as i see where you said something about the paper being gray, that is fogg. the paper isn't any good.




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