this just goes to show the more you know, the more you know . . .
With the new information "only happens to the contact films, not the plotted films".  Can you look for some residual contamination that is not being removed from the stable base material post processing.  you know the way chemistry is . . .  the irrestible force

----------
From:   Arnold C. Escanilla
Sent:   Thursday, May 21, 1998 5:25 PM
To:     [log in to unmask]
Subject:        Re: [TN] Photo tool stability

Hi John,

Thanks for the advise.
There have been a lot of suggestions about conditioning the photo tool for
24hrs after taking them out of the bag.  We usually only condition them for
4 hours but I'll try your suggestions.  Thanks!
By the way, the dimensional instability problem only happens with our
contacted films and not our plotted ones, but thanks for the input anyway.

Marco



----------
> From: John Waite <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: [TN] Photo tool stability
> Date: Friday, May 22, 1998 7:46 AM
>
> Just a couple of quick Ideas without diving too deep into  the situation.
>     1) Do you stabilize the film (open the package and "fan" it) for 24
hrs before using in
> plotting.  This should be done in the plotter area
>     2) Are your humidity and temp in the plotting room and other areas
consistent with each
> other?
>     3) Some material movement from the processor is normal (1-2 mils over
the sheet of film).  If
> your shrinkage is constant, size at the plotting/cam station according.
>      There are a number of other items that will also cause this, but
start simple... JOHN WAITE
>
> Marco Biagtan wrote:
>
> > Hi Guys,
> >
> > I have a problem with dimensional stability of photo tools.  The photo
> > tools shrink after processing.  I've tried increasing the drying
> > temperature (50-55C) just so it will not shrink but it still does.
This is
> > really giving me a headache.  Any suggestions?
> >
> > Marco Biagtan
> > NEC-CPI Process Engineer.
> >
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