A positive-positive processing on photographic emulsions for negative-positive. (Machine-translation by Google Translate, not legally binding)

摘要

Positive-positive processing on photographic emulsions for negative-positive. A slide is placed in the portanegativos and is exposed in the enlarger with its built-in corrective filtration, which gives the print of paper in color. A complete development is performed, with a black and white developer, on color paper, not practicing any fixed. It washes with natural water. The paper is exposed under the light of the enlarger for a period of 1 to 1.5 minutes, using the basic filtration of the paper plus the corrective correction for the type of lamp of the extender. A complete development is performed with a usual color developer in the negative-positive process. It is treated with a stop bath constituted by acetic acid in aqueous solution at 2 per 100. It is washed with natural water. It is blanked with the appropriate products for the type of paper and last it is renewed with natural water to eliminate the excess of reagents and drying. (Machine-translation by Google Translate, not legally binding)