[pure-silver] Re: How do you wash fiber paper?

RC papers have a maximum wet time of about 10 minutes, after which the
polyethylene layers start to delaminate from the base (look at the corners).
I seriously doubt that any paper base whiteners could be washed out of the
base at all (being protected by the plastic layer on both sides), but I'm
pretty sure it couldn't be done in 10 minutes.

David Vestal (and I believe Richard Henry) reported whiteners to visibly
wash out of FB paper within an hour or so. One good reason to limit FB
washing (some residual hypo actually doing some good being another) to
optimum washing times.





Regards



Ralph W. Lambrecht

http://www.darkroomagic.com







On 2005-06-30 22:51, "Matthew Gaylen" <mgaylen@xxxxxxx> wrote:

> As long as we're talking about this, I wanted to mention something that's been
> nagging at the back of my mind for a long time... I read somewhere along the
> line that you don't want to leave RC prints in the wash too long because you
> can actually washout the brighteners. I wonder if anybody on this list has
> heard of that.
> 
> When I'm doing RC prints I use an 8x10 Patterson washer with a water infeed at
> one end, an out feed at the other end and a fence at the lower end, presumably
> to aid in the process of circulation and turbulence. My print goes into this
> tray by itself from the Photoformulary wash aid I use.
> 
> It stays there while I'm working the next print at which time it goes into an
> 11x17 tray equipped with one of those fabulously expensive Kodak siphons that
> make a terribly annoying gurgling noise. It stays there until the next print
> comes down the pike and then it goes into the Patterson drying rack - which
> isn't cheap itself as a matter of fact.
> 
> To answer the original question... when I'm doing fiber prints, it goes from
> the kodak siphon tray into a exquisitely expensive 20" Versalab washer where
> it stays for a period of time after my printing session. From there they go
> onto some unbelievably expensive Zone VI drying screens.
> 
> I love working with fiber... but it's too expensive for everyday work. But
> compared to a $5k digital camera it's probably not that bad.
> 
> Best,
> 
> --
> joe suburbs the post modern hyper rural sub urban anti hero and vertiginous
> surrealist
> 
> http://homepage.mac.com/mgaylen/PhotoAlbum22.html
> 
> --snippage follows--
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