From: Tadeuz Jalocha (tjalocha@netexpress.cl)
Date: 11/20/00-10:53:52 PM Z
Hello Liam,
It's very strange, you say that dichromate stains when you unse it for
paper reversal?
The first reversal experiments i did were made on Ilford Ilfospeed some
time ago. And i can say, that i got some really nice negs from negs. No
stain at all. I remember that i needed to double the normal exposure to
get clean whites.
1. dev.:
Dektol 1+2
1.5 min @ 20 celsius
2: Bleach:
Dichromate 10%
Sulfuric A. 10%
Dilute 1+19 to use ONCE!
5 min @ 20 Celsius
3: Sulfite:
50 gr/l
1 min @ 20 Celsius
--------------------- Light --------
4: Dev: same as above
Note. I didīnt unse any halide solvent in the 1st dev. If you dont use
the sulfite bath, very interesting pseudosolarisation-like effects may
occure....
Tell me what kind of stain you are getting.
And yes, some time ago i had the idea of using inmediately after the
1.dev a sepia developer and then a common color Blix to convert the B/W
reversal process into a true 3 step process. It has the advantage of no
dichromate...
Tadeuz
Liam Lawless wrote:
>
> Hi,
>
> OK, I'll get in touch with Wayde. I'll rewrite the thing to bring it up to
> date, and leaving out all that's not needed (which is most of the early
> parts). I'm trying paper negs now, but finding that dichromate stains;
> don't know about permanganate, but suspect it would too. Amm. ceric nitrate
> is a possible alternative to dichromate, which, if MW's correct, will not
> stain, or need a clearing stage, and I'll know later this week. Other
> experiments have been unsuccessful so far, but I think I've had a
> partiularly brilliant idea for a new reversal method about 10 minutes ago.
> Will test it tonight.
>
> When is Thanksgiving -Tuesday tomorrow, Tuesday next week, or some other
> Tuesday? Whenever, hope it goes well & they're all grateful.
>
> Liam
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