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from the group: Carbro

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Pre-photographic

Photomechanical

Photographic

Carbon
Silver Gelatin DOP
Chromogenic
Dye Imbibition
Instant
Silver Dye Bleach
Albumen
Salted Paper
Gelatin POP
Collodion POP
Matte Collodion
Cyanotype
Platinum
Tintype
Chromogenic Slide Film
Carbro
Ambrotype
Screen Plate
Gelatin Dry Plate
Direct Carbon (Fresson)
Gum Dichromate

Digital

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Notes on this view:

Color carbro was used primarily for proofing color reproductions for advertisements and magazines. This example, dated August 11, 1949, was likely made for a fashion advertisement.

Carbro is similar to the carbon process except that the pigmented sheets of dichromated gelatin harden in contact with a silver gelatin bromide print; the gelatin hardens in proportion to the amount of silver present in the print. After printing the gelatin sheets are transferred to a temporary support and washed in warm water, which dissolves the unhardened gelatin resulting in an image in gelatin relief. The name “carbro” is derived from the combination of carbon and bromide. Color carbro is a subtractive color assembly process. The color image is composed of three superimposed subtractive color (cyan, magenta, yellow) pigmented gelatin reliefs on a paper support.