Guided Tour

Return to Search »
Compare with Another Print

from the group: Carbro

Select a New Process: X




Bromoil Transfer
Collodion POP
Direct Carbon (Fresson)
Dye Imbibition
Gelatin Dry Plate
Gelatin POP
Gum Dichromate
Instant (Diffusion Transfer)
Instant (Dye Diffusion Transfer)
Instant (Internal Dye Diffusion Transfer)
Matte Collodion
Salted Paper
Screen Plate
Silver Dye Bleach
Silver Gelatin DOP
Wet Plate Collodion


view fullscreen

Notes on this view:

The carbro and carbon processes are almost indistinguishable from one another; in fact carbro is a variation of the carbon process. The image in each is composed of pigmented gelatin on a paper support. The main difference is in how the gelatin was exposed. Carbon prints are made placing a pigmented sheet of dichromated gelatin, called a tissue, in contact with a negative and exposing it to light; the gelatin hardens in proportion to the amount of light received. Carbro prints are made by placing the tissue in contact with a silver gelatin bromide print; the gelatin hardens in proportion to the amount of silver present in the print. The name “carbro” is derived from the combination of “carbon” and “bromide.”

Despite their similarities, there are ways to distinguish a cabro from a carbon print. While monochromatic carbro prints were made, the process was commonly used for producing full color images. One major advantage of carbro was the ability to make enlargements because the tissues were exposed in contact with a silver bromide enlargement rather than contact printed. Therefore, carbro prints tend to be larger than carbon prints. Finally, carbon printing began to decline with the introduction of carbro so prints made after 1930 are likely carbro.