Bromoil : le tirage à l’huile des pictorialistes, sans le bichromate
Bromoil is a printing process in which an image is inked by hand, with a brush and greasy ink. You start from a silver bromide print which is bleached: the silver vanishes, the gelatin hardens where the image was dark, and that gelatin then takes the greasy ink in proportion. The result — matter, relief, an artist's touch — made bromoil one of the summits of Pictorialism. Its weak point: the bleaching bath contains bichromate, a carcinogen.
A process born in 1907, carried by Demachy
In 1904 G. E. H. Rawlins described the oil print; in 1907, on a suggestion by E. J. Wall, the Englishman C. Welborne Piper derived bromoil from it — the same greasy ink, but applied to a bleached bromide print, which allowed enlargement. Robert Demachy became its leading European practitioner and introduced bromoil transfer in 1911; F. J. Mortimer refined the technique. Before bromoil there is the oil print — its direct ancestor.
Two bromoils: a period print bleached with bichromate (Petrocelli, 1920) and today's Vision Picturale bromoil — same hand-inking, without the toxic salt.
The masters of bromoil
Bromoil is a practitioner's process: you can read a hand, a gesture in it. Two masters of the Maison Picturale library practised it.
The Pictorialists who inked bromoil by hand.
The truth: the bichromate bleach
In traditional bromoil the sensitive step is not the ink — it is the bleaching bath, which contains potassium bichromate (dichromate). The hexavalent chromium it releases is a proven carcinogen and mutagen (CMR), toxic by inhalation. That is what makes the classic practice tricky at home.
Vision Picturale bromoil: the look, without the bleach
Vision Picturale bromoil removes silver bleaching entirely: the matrix that takes the ink is built with our N°05 gelatin, sensitized by N°03, dichromate-free. You still ink by hand, you still get the matter and relief — but without the bichromate.
Inking by hand, without the poison
The bromoil gesture — inking a matrix with a brush — without the bichromate bleaching step. The matter and relief stay; the toxicity goes.
- Matrix
- VP N°05 gelatin
- Sensitizer
- VP N°03 — dichromate-free
- Classification
- No CMR · no silver bleaching
- Gesture
- Brush-inked, by hand
The matter, in pictures
Vision Picturale bromoil in a few prints and inked-matter details.
FAQ
Does VP bromoil give the same look as classic bromoil?
Yes: you ink a gelatin matrix by hand, which gives the same matter and relief. The difference is upstream — no silver print bleached in bichromate.
Why is traditional bromoil problematic?
Because of the potassium bichromate bleaching bath (hexavalent chromium, CMR), not because of the greasy ink.
Do you need a darkroom?
No: the VP matrix is built without a silver print or bleaching, in daylight.
For the full panorama of non-toxic processes, see our guide to alternative processes or the glossary.
