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Bronzing

I think one should do a sheet of test strips to determine what the maximum exposure for any given paper-emulsion-developer combination to determine if double coating is necessary and at what exposure time it would become necessary.

BRONZING IS CAUSED BY TOO MUCH LIGHT HITTING TOO LITTLE EMULSION
possible remedies:

1. Less exposure
2. More metal in emulsion ) ie: 50-0-50 could be 50-0-60
3. Double coat dry paper normally between coats!
4. Less contrasty emulsion
*5. Add tween 20 from Bostick and Sullivan also you may need more total drops of emulsion
6.add some photoflo 1 drop or so of it (dilute 1 drop per 25 drops of distilled water) to emulsion to start increase # of total drops of emulsion as paper will become more absorbent with the photoflo tweens' better!

*

Shows depth elmulsion has gone into paper.
Also shows time at which emulsion is saturated with light and will start to reverse from solid black into the bronzing stage.


Table of Contents
enlarged negatives
retouching negatives
papers
traditional pl/pt formula
contrast control
tween 20
  
testing coating area and ferric oxalate
coating the paper
drying prior to printing
exposure information
bronzing
development
  
clearing baths
gold tone
washing
final drying
retouching prints
suppliers

 

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