Bleached fiber prints. Phase II of the Bromoil process using the above photographs: each photograph was developed in the darkroom, dried, soaked, bleached, and then dried again. The bleaching process removes the pigment from the paper, leaving only a faint trace of the image in the areas where the silver crystals, i.e. where the emulsion hardened, rest on the surface of the print; the areas with no emulsion remain as white, raw paper, and therefore susceptible to absorbing water whereas the darker areas repel water and accept oil-based ink.
The prints are then re-soaked, wiped down and then coated in ink with a brayer. The water-soaked paper fibers reject the ink, and upon a second washing, the image begins to reappear in the areas where the lithographic ink clung to the crystals. Eventually, after several more soakings and inkings, a more photographic image is achieved.
The Bromoil alternative photographic process was first developed in 1907.