Marco Biagtan wrote:
>
> thanks for the response.
>
> I use a coordinate measuring machine and measure four corner points on the
> photo tool. At first, I get the dimensions of the master film (X1,X2,Y1,Y2)
> and then compare this with the dimensions taken from the contact film.  The
> contact film always show about -30 to -40 micron reduction in length.
>
        Are you allowing 24 hours for the films to stabilize
        and measuring in a room controlled to the same temp/humidity
        environment as they were created in?

        Using 7 mil film?

        Maybe you should be trying to dry it at as little an
        heat rise as possible.  Find out the hysteresis (sp?)
        characteristics from your film vendor, you may be going
        outside the temperature envelope.

        (forgive me in advance, my photo experience is very old,
        but had many many stability problems in hot/humid climate)
--

      Jeff Seeger                         Applied CAD Knowledge Inc
      Chief Technical Officer                  Tyngsboro, MA  01879
      jseeger "at" appliedcad "dot" com                978 649 9800

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