Tone J
Tone J—Red (Dye Tone)
By first toning in Tone A, washing, and then immersing the copper toned film in an acid solution of a basic dye, the dye is mordanted to the toned image, thus modifying the color.
Nature of Positive—Medium
Tone for five to ten minutes in solution as for Tone A, and after washing for ten minutes immerse in the following dye-bath.
| Avoirdupois | Metric | |||
| Safranine A (National Aniline and Chemical Co., Inc.) | 7 | ozs. | 200 | grams |
| Acetic Acid (Glacial) | 32 | ozs. | 1000 | cc. |
| Water to | 50 | gals. | 200 | liters |
Time of Toning
Five to ten minutes, according to depth desired.
Temperature of Toning—65 degrees to 70 degrees F.
Time of Washing
Usually only a slight rinse in water is necessary. If the highlights are stained, the film should be washed for five or ten minutes or until clear. Stained highlights are caused either by insufficient washing after toning, too strong a dye-bath, or an incorrect amount of acid in the dye-bath.