Emulsion for High-Speed Papers
This gives high speed & high contrast.
Part A Mix at 0°C
Part B Mix at 20°C
Part C In the Dark Room
Warm to 70°C mix Part C into Part B rapidly maintain at 70°C for 2 minutes then add part A and ripen for 5 minutes.
Cool and set at 2°-7°C for approx 4 hours. Shred and wash at 2°-7°C. After ripen at 70° C for 50-60 minutes, with the addition of 2ml 1% KBr
This formula is ideal for document copying papers. I've posted it as this is one extreme of the emulsions suitable for paper coating.