Carbro Magnification
Carbro prints consist of three superimposed pigmented gelatin reliefs on a heavy paper support. Because the image is composed of three color layers, misregistration will be visible, particularly in areas where a shadow meets a highlight. Pigment particles will also be visible. Pigment particles will vary in size depending on the pigments used and how finely ground they are.
Misregistration is visible where dense image areas meet lighter areas.
Pigment particles are slightly visible at 10x magnification.
Pigment particles and misregistration are detectible at 10x magnification in this print.
Viewed at 30x magnification, misregistration and pigment particles are clearly visible.
Under higher magnification of 50x, pigment particles and misregistration are easily detectible.
Some carbro prints have a two layer structure consisting of a paper support and the pigmented gelatin image layers. Other prints have on a baryta paper and therefore have a three layer support consisting of a paper support, baryta, and the pigmented gelatin image layers.
Paper fibers are partially visible in the highlights of prints without a baryta layer.
With raking light and 50x magnification paper fibers are partially visible. Matting agents are visible as well.
Matting agents to reduce differential gloss are common in carbro prints and are seen here with 50x magnification and raking light.
This cross section shows the layer structure of a print with a baryta layer. Notice the layer order of the gelatin tissues; yellow is at the bottom, magenta in the middle and cyan is the top layer.