SILVER BASED
| Process | Sensitizer/binder | Image | Inventor | Year |
| Salt print | Silver chloride/none | Silver | Talbot | 1834 |
| Albumen | Silver chloride/albumen | Silver | Evrard | 1850 |
| Collodion | Silver chloride/collodion | Silver | Simpson | 1865 |
| Print-out | Silver chloride/gelatin | Silver | Mawdsley | 1874 |
| Ozobrom | Silver bromide/gelatine contact diffusion |
Pigments | Manly | 1905 |
| Bromoil | Silver bromide/gelatine dichromate bleach & harden |
Litho Ink | Piper & Wall | 1907 |
| Carbro | Silver bromide/gelatine contact diffusion |
Pigment | Farmer | 1919 |
IRON-BASED
| Process | Sensitizer (Developer) | Image | Inventor | Year |
| Argentotype | Ferricitrate (Dev: Silver nitrate) |
Silver | Herschel | 1842 |
| Vandyke Brownprint Sepiaprint |
Ferricitrate+Silver nitrate (Dev: water) |
Silver | Arndt & Troost |
1889 |
| Kallitype | Ferric oxalate + Silver nitrate (Dev: Borax or Rochelle salt) |
Silver | Hunt Nicol |
1844 1889 |
| Argyrotype | Ferricitrate+Silver sulphamate (Dev: water) |
Silver | Ware | 1991 |
| Cyanotype Blueprint Ferroprussiate |
Ferricitrate+Ferricyanide (Dev: water) |
Prussian Blue |
Herschel | 1842 |
| New Cyanotype | Ferrioxalate+ferricyanide (Dev: dil. nitric acid) |
Prussian Blue |
Ware | 1992 |
| Pellet Print | Ferricitrate/tartrate (Dev: Ferrocyanide+gum) |
Prussian Blue |
Herschel Pellet |
1842 1878 |
| Chrysotype | Ferricitrate (Dev: chloroaurate(III)) |
Gold | Herschel | 1842 |
| New Chrysotype | Ferrioxalate+gold(I) complex (Dev: carboxylic acids) |
Gold | Ware | 1987 |
| Platinotype | Ferric oxalate+chloroplatinite (Dev: oxalate) |
Platinum | Willis | 1873 |
| Sepia Platinum | Ferric oxalate+chloroplatinite +Mercury(II) salts (Dev: oxalate) |
Mercury+ Platinum |
Willis | 1890 |
| POP Platinum | Sodium ferrioxalate + sodium chloroplatinite | Platinum | Pizzighelli | 1887 |
| Satista | Ferric oxalate+silver chloride +chloroplatinite | Silver+ Platinum | Willis | 1913 |
| Palladiotype | Ferric oxalate+chloropalladite (Dev: oxalate) |
Palladium | Willis | 1916 |
| Amphitype | Ferricitrate/ferritartrate +Mercury(II) salts | Mercury | Herschel | 1842 |
| Obernetter’s Ferrocupric | Ferric chloride+cupric chloride (Dev: thiocyanate) (Tone: ferricyanide) |
Cupric Ferrocyanide |
Obernetter | 1864 |
| Phipson’s | Ferrioxalate (Dev: permanganate) |
Manganese Dioxide |
Phipson | 1861 |
| Ferrogallate Colas Blackline |
Ferritartrate (Dev: Gallic acid) |
Ferric Gallate |
Colas | 1860 |
| Heliographic Nakahara’s |
Ferritartrate (Dev: Tannic acid) |
Ferric Tannate |
Nakahara | 1894 |
CHROMIUM BASED
| Process | Sensitizer/Colloid | Image | Inventor | Year |
| Gum Bichromate | Dichromate/gum arabic | Pigment | Poitevin | 1855 |
| Carbon (direct) | Dichromate/gelatine | Pigment | Poitevin | 1855 |
| Carbon Transfer | Dichromate/gelatine | Pigment | Fargier | 1860 |
| Fresson | Dichromate/colloid | Pigment | Fresson | 1899 |
| Oil print | Dichromate/gelatine | Litho Ink | Rawlins | 1904 |
| Ozotype | Dichromate/gelatine | Pigment | Manly | 1899 |
| Gum-Ozotype | Dichromate/gum arabic | Pigment | Manly | 1899 |