3 Color Cyanotype and Gum Print

This print was a work in progress when I posted earlier. This was printed from a RGB negative separation. This used the same negatives as the example in the previous post, but colors were used in different strengths and exposure times were different.

Cyanotype With Gum Prints

I have been exporing a different alternative process: Cyanotype. This very early form of photographic printmaking evolved into todays "blueprints." One print was done from a b/w white negative and is a true cyanotype. The other print was made from R,G,B separations from the same photo used to create the b/w negative. This print was created using cyanotype process for the C (of C,M,Y) layer. This print was then "developed in a water bath and after drying was coated with two more sucessive layers: Alizeran and Yellow.

New Gum Prints

These are all Gum Bichromate Prints printed on Coventry Rag paper. Exposures were made using either sunlight or artificial light. For an inexpensive UV light source I have discovered that a 150W GE Reveal light bulb works pretty well. The exposure time is long, 20-30 min, but it allows me to print in the evening when the sun is not available.

Gum Bichromate Print

 

This is another attempt at gum bichromate printing. Slowly but surely I am learning the finer points of this photographic printing process. This print is 8.5" x 10.5" and is printed with black, grey and raw sienna.

CYMK Gum Print

This 6"x 9" print was contact printed using a negative created in Photoshop. My original digital image was opened in the CMYK mode, the channels were then split, inverted and then flipped horizontally. Each of the channels (gray scale) was lazer printed onto a transparency. Then using the gum bichromated process I printed this image in four different exposures.