Fujicolor Crystal Archive Professional Type MP paper

[Barry Pickering]

I am new to colour darkroom work. I have purchased a old second hand LPL
enlarger. I have a new Jobo CPE2 processor with lift. I am using Fujicolor
Crystal Archive Professional paper with Photocolor RA4 chemistry. I am
pedantic on temperature and timing. I record all my exposure data. All my
prints have an orange cast irrespective of filtration or time of exposure. I
set Cyan at zero and have tried all combinations of yelloe and magenta from
10 to 90 units but nothing changes. Fuji technical have stopped
communicating with me. Can anyone point me in the right direction?

[Mark Harrington]

It sounds as if the filters are not in the light path. Is there a 'white
light' lever on the enlarger head? (i.e. a lever to move all three filters
out of the light path for focusing). Does the colour of the image change
when you change the filter settings?

Mark Harrington

Barry Pickering <FURZ...@email.msn.com> wrote in message
news:OZiAwlob$GA.307@cpmsnbbsa02...

[Lionel S.]

In article <OZiAwlob$GA.307@cpmsnbbsa02>, "Barry Pickering"
<FURZ...@email.msn.com> wrote:

> All my prints have an orange cast irrespective of filtration or time of
exposure.

Sounds like fog.

--
Lionel S.
www.isn.net/~camera/camera.htm

[Manny Bhuta]

If you have "tried all combinations of yellow and magenta
from 10 to 90 units but nothing changes", then:

1. may be there is a problem with your enlarger. May be
you are changing the dial but the filtration itself does not
change. You can easily check this buy looking the light
striking the paper. Do this without any negative and put a
white paper on easel.

2. may be there is a problem with chemicals. You can mix a
new batch and test again. You can also develop an
unexposed sheet of paper. If the unexposed print is not
white then problem is in developing.

3. may be the paper is getting fogged by blue green light.
In this case, you should see changes in the print as you
change filtration from 10 to 90 units. Make sure that there
are no blue or green LEDs casting light on paper.

Good luck and let us know what you find.
--

Manny Bhuta
Randolph, NJ USA
________

"Barry Pickering" <FURZ...@email.msn.com> wrote in message
news:OZiAwlob$GA.307@cpmsnbbsa02...
> I am new to colour darkroom work. I have purchased a old
second hand LPL
> enlarger. I have a new Jobo CPE2 processor with lift. I am
using Fujicolor
> Crystal Archive Professional paper with Photocolor RA4
chemistry. I am
> pedantic on temperature and timing. I record all my

exposure data. All my

> prints have an orange cast irrespective of filtration or

time of exposure. I

[John Costello]

Barry Pickering wrote:

> I am new to colour darkroom work. I have purchased a old second hand LPL
> enlarger. I have a new Jobo CPE2 processor with lift. I am using Fujicolor
> Crystal Archive Professional paper with Photocolor RA4 chemistry. I am
> pedantic on temperature and timing. I record all my exposure data. All my
> prints have an orange cast irrespective of filtration or time of exposure. I
> set Cyan at zero and have tried all combinations of yelloe and magenta from
> 10 to 90 units but nothing changes. Fuji technical have stopped
> communicating with me. Can anyone point me in the right direction?

Hi Barry,

When I first got a color enlarger, I experimented a little and found that white
light produced a dark orange or brownish color. This was with Kodak Plus paper
and Ep-2 chemistry, so the results may or may not be relevant to your problem.

My experience with Fuji papers has been that fogging produces magenta, not deep
orange. (That's using RA4-AT chemistry in drums or Nova processors.)

You said that the enlarger was "... old ...". Both Mark and Manny have
suggested that for some reason the filters are not moving into the light path.
My guess is that they have hit the nail on the head. Can you remove a cover and
see whether the filters move?

Hope you can find and solve the problem.

John

[wvl]

Orange cast is a sign of filters out of light path. Find the lever.
Check that you see big magenta and tellow light changes when adjusting
the filters. It is obvious. If not, filters are out of the path.

Bill Lawlor