Replenishment - AGFA SelectSet Avantra Series Operating Manual

3–14 SelectSet Avantra Series Control Panel and Operating Guide

Replenishment

Replenishment is the automatic replacement of the developer solution
in a mechanical processor. The developer needs to be replenished
because it loses its strength, or becomes exhausted.
Photographic developer becomes exhausted by:
Exposure to air
Ingredients in the developer mix with the oxygen in the air. This
process, called oxidation, weakens the developer. The longer the
developer sits in a processor, the more exhausted it becomes.
Development
Ingredients in the developer are used up in the chemical reaction
that creates the photographic image. The more media you process,
the more the developer becomes exhausted.
Replenishment rates for media processors are controlled two ways:
Anti-oxidation or AOX function
Compensates for exposure to air; built into most processors.
Developer replenishment setting
Compensates for the amount of media processed. On some
processors, you can adjust this rate; others require adjustment by
a service representative.
For more information, consult the user documentation for your
processor or the manufacturer.
Note: Film requires more processing chemicals than paper because
it contains more silver. When you use both film and paper daily in
your production environment, we recommend that you set your
processor to the replenishment rate for film. Under-replenishment
for film produces inadequate working density. Over-replenishment
for paper does not harm the end result.