Bromoil Printing was discovered in 1907 by C Wellbourne Piper, and has been in use ever since. Bromoil printing is essentially a print that has had the silver image bleached away and replaced with an oil pigment.
The process is as follows:
An image is printed onto silver bromide paper, the print is then placed in a bleaching bath which hardens the gelatin where the image has formed. The print is then soaked in a week sulphuric bath which allows the paper to swell, (darker shadow areas containing the hardened gelatin are less prone to swelling, whereas the highlighted areas will swell the most). Bromoil ink is then applied using a specialised brush, areas with water will reject the ink as water and oil don't mix. and volla! A Bromoil print!:)
Images by Joe Besse.
For more information on Bromoil printing click here.
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