Re: haunted VDB

[francis schanberger <frangst@gmail.com>]

Joao,

This is a long shot but when you said stored in a portfolio did you mean an archival storage box (non-buffered) or a photographer's portfolio with plastic protected pages?

I noticed a duller brown after a night of dry down when using older VDB (made over 4 months previous). 

Is there another paper you have printed on which hasn't displayed the graying?

Would you be able to scan or photograph a fresh VDB and one that has shifted after 20 days and post them to a web page?

Are you re-using the same trays for different processing steps or do you dedicate one tray for each of the clearing fixing steps?



-francis schanberger, online doctor of VDB prints

On Wed, Sep 30, 2009 at 9:18 AM, <C.Breukel@lumc.nl> wrote:

The silver image of VDB is said to be quite vulnerable to attack (by say
pollution in the air), since the silver filaments of VDB (if they have
that shape) are quite small, in general the smaller the silver
filaments, the warmer/browner the image, and toning with gold protects
these silver filaments..but also changes colour (for the better IMHO...)

Did the white parts of the image change colour (towards yellow) because
that would indicate that you did not fix strong enough, change of colour
of the blacks could indicate that you did not wash the fixer out enough
(I used also a hypo-clear step)

...but I should stop, my experience with VDB is limited and dated,

Best,

Cor

-----Original Message-----
From: Joao Ribeiro Globo [mailto:ribeiro.joao@globo.com]

Sent: woensdag 30 september 2009 14:56
To: alt-photo-process-l@usask.ca

Subject: Re: haunted VDB

Hi Cor,

No treatment other than normal processing and washing.

Joao


On 30/09/2009, at 09:46, C.Breukel@lumc.nl wrote:

> Joao,
>
> Did you gold tone them?
>
> Cor
>
> -----Original Message-----
> From: Joao Ribeiro Globo [mailto:ribeiro.joao@globo.com]
> Sent: woensdag 30 september 2009 14:32
> To: alt-photo-process-l@usask.ca
> Subject: haunted VDB
>
> Hi Folks
>
> After printing really brown prints with traditional formula on arches
> aquarelle and archiving them in a portfolio, some prints changed from
> brown to gray.
> They were perfect 20 days before.
> Does anyone know what might be happening?
>
> Thanks in advance,
> Joao
>
>
>
>

Joao Ribeiro
jr@joaoribeiro.com
(11) 9607-2106
www.joaoribeiro.com

-- 
francis schanberger

www.frangst.com