This formula gives a range of red tones to sepia-toned prints, the brilliance of the tone depending on the paper used. On some papers brilliant chalk red tones can be formed. If desired, deep blue tones may also be obtained with this formula by using black-and-white prints instead of prints that have first been sepia-toned.
The actual color that is obtained is dependent upon the type of paper used to make the print. Slow, warm-tone papers tone more readily than do fast cold-tone papers. Prints that have been fully exposed and developed in dilute developers tend to give the best results.
Red tones may be obtained by first toning the print with Sepia Sulfide Toner 221, Bleach and Redevelopment. This process involves an intial bleaching of the print with a ferricyanide-bromide toner then redeveloping the image with a sulfide bath. The well washed print is then toned in Gold Toner (GAF 231) for 15 to 45 minutes. For redder tones one-half the specified amount of Ammonium Thiocyanate may be used.
Unusual effects of mixed tones of blue-black shadows and soft reddish highlights can be produced by using prints which have been partially toned in a sulfide bath without initially bleaching the image. Toners to carry out this type of sulfide toning are Hypo-Alum Print Toner and Polysulfide Toner. The well washed print is then toned in Gold Toner (GAF 231).
MIXING THE SOLUTIONS
Stock Solution A
You will need a 1-liter storage cantainer and a mixing bowl.
| Chemical | Amount | Units |
|---|---|---|
| Water (125°F/52°C) | 750 | ml |
| Ammonium Thiocyanate* | 105 | g |
| Water to make | 750 | ml |
Place the warm water in a mixing bowl and add the ammonium thiocyanate. Stir the mixture to dissolve the solid then add sufficient water to bring the final volume up to 750 ml (a little less than 250 ml will be needed). Stir the final solution to ensure the solution is homogeneous. Transfer the solution to its storage container.
Stock Solution B
You will need a 250 or 500 ml storage container, a graduated cylinder, and a plastic funnel to mix this solution.
| Chemical | Amount | Units |
|---|---|---|
| Water (68°F/20°C) | 100 | ml |
| Gold Chloride, 1% Solution** | 60 | ml |
| Cold distilled Water to make | 250 | ml |
Place the plastic funnel on the storage container and add 100 ml of water to the storage container. Pour all of the gold chloride solution into the storage container. Measure 90 ml of water and add half of it to the gold chloride-solution conatainer then transfer this rinse water to the storage container. Use the other half of the 90 ml portion of water to wash the funnel used for transfer.
Working Solution
The working solution is prepared by mixing 3 parts of Stock Solution A and 1 part Stock Solution B. Stock Solution B is to be added to Stock Solution A.
Unfortunately, the working solution is not vary stable after mixing. In addition, the capacity depends upon silver silver density of the print and the method in which the print is toned. Therefor the capacity is very hard to estimate before the fact. Plan to tone about 20 8x10 prints per liter, but save your poorer prints to be toned towards the end.
| Chemical | Amount | Units |
|---|---|---|
| Stock Solution A | 750 | ml |
| Stock Solution B | 250 | ml |
USING THE TONER
For Blue Tones
Immerse a well-washed and wet black-and-white print in the toning solution. Rock the tray to wash the print with fresh toning solution. The degree of blue toning depends upon the length of time in the toning bath. Tone to the hue desired then remove the print and wash in running water for 10-20 minutes. When first using this toner, you will not know the time needed to achieve the desired hue. We suggest you use a few test strips of prints you wish to tone to calibrate the bath.
For Red Tones
Staring with a sulfide-toned print, use the following procedure to obtain red toned prints. Be sure the print is well washed and wet before toning. Immerse the print in the working solution of the toning bath. Proper toning takes a considerable amount of time (15-45 minutes). During this time occasionally rock the tray to wash the print with fresh toning solution. As toning proceeds, the color of the print will first turn to brown and then to red. The exact color of the toning is dependent upon the time the print remains in the toning bath. To obtain the desired hue, we recommend that you first tone a test strip of the print in order to calibrate the time of toning.
After Treatment for Red Toned Prints
Wash the print for 1-2 minutes in running water then refix it in a 10 percent solution of sodium thiosulfate. Finally, wash the print thoroughly (10-20 minutes) in running water.
REFERENCE
Photo-Lab-Index, Section 15, Supplement 172, p. 60.
Formulary Gold 231 Toner Kit No. 06-0210,
Photographers' Formulary (800-922-5255).