Agfa Process 85, for Agfa 310/Type 4 & Type 5 Colour Papers

The following information has been researched by Michael Talbert. See his early colour print information relating to Agfa and Kodak.

Agfacolor 310 Type 4 paper was last made around 1977. By 1979 Agfa were making Type 5 paper.

The last reference Michael has managed to find to the chemicals used for Type 4 (and Type 5) papers is the composition and procedure published within the British Journal Photographic Almanac (BJPA) of 1985. By that time Agfa were producing their Type 6 and Type 7 papers, which were compatible with the (by then) universal Kodak EP-2 process. But the Type 4 (and Type 5) Agfa papers (using Agfa Process 85) were not completely compatible with EP-2 and this is confirmed by the processing chemical compositions published for Types 4 and Type 5 in the 1985 BJPA i.e. they were different to the chemical compositions given for EP-2.

The Agfa formulae as printed in the BJPA for 1985, and also the processing sequence, is as follows:

These are the chemicals required to make 1 litre of
Colour Developer.

Calgon 1.4 grams
Hydroxylamine sulphate 2.7 grams
Sodium Sulphate 2.7 grams
Sodium Bromide 0.7 grams
Potassium Carbonate 67.0 grams
Water to 1,000.0 ml
The add, some hours before use:
Ac 60 (Agfa) or Colour Developer 60 (Merck)
OR
T32 or Droxychrome or S5
OR
Diethyl paraphenylenediamine sulphate

4.0 grams

3.3 grams

2.0 grams



Bleach – Fixer

EDTA Na Fe 50.0 grams
EDTA Na4 5.0 grams
Sodium Carbonate (anhydrous) 1.0 grams
Sodium Sulphite (anhydrous) 10.0 grams
Sodium Thiocyanate (20% solution) 50.0 ml
Potassium Iodide 2.0 grams
Ammonium Thiosulphate (crystalline) 120.0 grams
Water to 1,000.0 ml


Note that EDTA is ethylene-diamine-tetra-acetic acid.

Stabilizer

Brightening Agent 4.0 grams
Sodium Acetate (3H2) 3.0 grams
EDTA Na4 2.0 grams
Formaldehyde (30% solution) 80.0 ml
Water to 1,000.0 ml


Note that Possible Brightening Agents are:
Leucophore B.R (Sandoz)
Blancophore BBU, BUP, BP (Bayer)
Uvitex CF conc. PRS (Ciba)
Tinopal BV (Geigy)
PhotineC, B (Hickson & Welch)
Celumyl, B,R,S, (Bezons)

However, if you wash the paper for at least 3 minutes in running water you can omit the Stabilizer bath.

Stop-Bath
Use a 2% Acetic Acid solution.

Processing Sequence
Using a Small Rotary Drum processor at 35°C. The sequence should also work for dish processing.

1. Pre Heat 1 minute
2. Developer 2 minutes
3. Stop Bath ½ minute
4. Rinse ½ minute
5. Bleach–Fix 1½ minutes
6. Wash 1½ minutes or longer (see above)
7. Stabilizer (optional) ½ minute
8. Rapid Rinse (optional) 5 seconds
Dry at a temperature not exceeding 90°C


Keep the Developer temperature at + or – ½ degree C but the other solutions and washes can vary + or – 2 degree C either way without making any difference to the end result.

This page last updated: 31st March 2015