Background
Johann Baptist Obernetter was born on May 31, 1840, in Munich, Bayern, Germany. He was the son of an inspector in the Bavarian government printing plant.
the University of Leipzig
Johann Baptist Obernetter was born on May 31, 1840, in Munich, Bayern, Germany. He was the son of an inspector in the Bavarian government printing plant.
Johann Obernetter studied chemistry at the University of Leipzig. Then in 1859-1860, he studied photography in Professor Kayser's laboratory, where he worked.
In 1860 Johann Obernetter began work for Josef Albert in Munich, seeking a printing process to substitute for the silver-positive one. He patented a ceramic enamel process in 1864 and, in 1867, introduced a commercial silver chloride collodion paper, and made improvements on Albert and Husmk's collotype printing process. By 1878 Johann Obernetter had developed a reversal collodion-negative process, and in 1880 encouraged Otto Perutz to manufacture his silver bromide gelatin dry plate. Perutz later produced Obemetter's fast orthochromatic plate (1884), developed with Dr. Hermann Vogel's color-sensitizing processes and referred to as the Vogel-Obemetter Silver Eosin Plate.