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Pre-heat the UV tubes by "running" them for at least 5
minutes prior to commencing any exposure - set the tubes
running before proceeding further should achieve this.
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Trim the vellum to the desired size with no less than a 5mm
margin.
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Remove a sheet of JMP Daylight Film from the pack - on one side of the
bag or box you will see "EMULSION SIDE UP" indicating which
side of the film is the coated side. If you are not sure
which side is the coated side scratch the surface with a
sharp knife in one corner - the coating will scrape away on
the coated side.
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Cut the film to size if necessary, making sure that the film
is slightly larger than the vellum - if the vellum is larger
than the film it can cause leakage which will detrimentally
affect your negative.
-
Place the exposure foam (sheet 4mm plastic foam) on the
lower glass and place the film "emulsion side up" on the
exposure foam.
-
Place the printed artwork over the film so that it is "right
reading" - emulsion down if the print was mirrored and up if
not.
-
Cover the film and artwork with the top glass and tighten
the clamps to secure. Invert the assembly so that the
artwork is face down towards the UV tubes.
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Set the exposure time to 3 minutes (150-180 seconds) and
commence exposure. The actual time required may vary
according to the strength and age of the tubes so some
variation may be required.
-
Once the exposure time has elapsed disassemble and/or remove
the exposed film and place it emulsion side up on the
washout plate.
-
Spray the film with developer - liberal amounts of developer
should be used to ensure that the chemical reaction occurs
evenly over the entire film. If using an Ideal Spray Nozzle
spray until the film is covered with foam.
-
Let the developer soak in for 70 to 90 seconds - more if the
ambient temperature is below 20