The Beginners Compendium
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of Non-Toxic Intaglio Printmaking
Donna Adams MFA
About the author:
Donna Adams received her Master of Fine Arts Degree from the University of Missouri, Columbia and the Graduate Certificate in Non-Toxic Intaglio Printmaking from Rochester Institute of Technology. Her RIT research is published here as 'The Beginners Compendium' - a comprehensive, easy-to-follow, illustrated guide which is a must for anyone interested in learning about and using the techniques of non-toxic intaglio printmaking.
Adams currently teaches photography and printmaking at the University of Indianapolis.
1. Compared to Traditional Intaglio

The simplified cross-section (right) represents the developed film (blue) on the plate (below) and the printed paper (above). The paper shows the characteristic edge embossing which results from the pressure of the press. Thick lines on the paper represent ink transferred to the paper under pressure. 
Materials include a liquid dish detergent, such as Palmolive; sponge; paper towels; white vinegar in a spray bottle. Preparing traditional metal plates requires an electric finishing sander and 600-grit wet-dry sandpaper, a deburring tool, and a rat-tail file. 






Turn the plate over; trim the emulsion with a blade so the emulsion does not extend beyond the plate edge. Lift and discard trimmings (opposite).








An aquatint screen exposure works in the same way aquatint works in traditional intaglio, to break up solid areas and avoid open biting. The simplified cross-section (right) represents an aquatint screen exposure. The aquatint screen is positioned emulsion-to-emulsion over the laminated ImagOn. The aquatint screen's opaque dots block ultraviolet light from reaching the film during exposure (represented by the short arrow above the black dot) but ultraviolet light reaches the film in the spaces between the dots (represented by the long arrow). The film remains soft below the dots but hardens in the openings between dots.
Turn the platemaker on ahead so it warms up.
7. Image Exposure
The simplified drawing (left) shows the effect of exposure on light tonal values (the lower arch) and on dark tonal values (the higher arch). With no exposure, the print would show white for all tones in the image. Light tones do not need much exposure to achieve the correct value and, beyond that, they harden so much that they do not hold ink well so they print increasingly lighter until they print as white. Dark tones need a longer exposure to achieve the correct value and, beyond that, they also harden too much to hold ink well so they print increasingly lighter until they print as white. Under-exposed images do not develop rich blacks. Over-exposed images lose the light tones first and eventually the dark tones as well. For images with the full tonal range, a compromise may need to be made between keeping the light tones and achieving the richest black.
Steps
Materials
Stir until the soda ash is dissolved (bottom photo).
Steps
After the ImagOn plate is exposed, it is ready to be developed in the standard developer as determined by the one-time developer test; if you are not going to develop the plate immediately, store it in a cool, dark location. The mild soft-water developer solution of soda ash is slightly base. White vinegar is slightly acidic; it stops development and stabilizes the film. Note: A few intaglio-type techniques require a variation on standard tray development procedures; these variations will be indicated in topics discussing those techniques.
Remove the top Mylar by rubbing it back from a corner and lifting off the film (top photo). Alternately, apply a small piece of masking tape to a corner of the Mylar and lift off.



Press gently from the center of the paper outward in all directions until no shiny spots remain on the paper (third photo).
Materials and equipment
13. Print the ImagOn Plate
Gently lift the print from the plate (fifth photo). It is now ready to be dried.
Steps
Materials and equipment
Dry the print
Steps
Toner-Wash preparation requires: used toner powder as the pigment; Future Acrylic Floor Polish as the binder; rubbing alcohol as the drying agent; window cleaner, such as Windex and/or soapy water (approximately 10 drops of liquid dish detergent per cup of water) in a spray bottle as the wetting agent; spoon for toner; stirring spoon or spatula for mixing; small container for mixing the Toner-Wash, such as a 1-cup yogurt container; paint brush; scrap of 0.003 single-sided drafting Mylar; dust mask to avoid inhaling toner powder; work surface covered with newsprint for easy clean up.
Add 1 teaspoon Windex to toner mixture (fourth photo). Stir well.
Materials and equipment
Toner-Wash-Drawing Intaglio-Type using Windex spray
Toner-Wash-Drawing Intaglio-Type with rubbing alcohol addition
Direct Intaglio-Type requires: prepared Toner-Wash; spoon or spatula; paint brush and other mark-making tools; rubbing alcohol with a hole in the bottle’s lid; Windex in a spray bottle; small container of water; prepared ImagOn plate; aquatint screen; standard materials and equipment for exposing, developing and printing a plate.
21. Mezzo-Type
Steps
Additive Wet-on-Wet Mezzo-Type
22. Spit-bite Intaglio-Type
Stencil Intaglio-Type combines techniques used in Mezzo Intaglio-Type and Spit-bite Intaglio-Type. Part of the Mylar remains in place for tray-development, which produces rich black shapes; the rest of the Mylar is removed for hand-developing with spit-bite to produce dark tones and applying screenfiller to produce light tones. 
24. Pastel Intaglio-Type
Steps 

27. Photo Intaglio-Type
Materials and equipment
This brings up the menu shown in the figure top right. Name the file and complete the options as shown in the menu. The dimensions shown here assume a transparency size 8½ x 11 inches.
In the Command Menu, select Image. This brings up a drop-down Menu; select Posterize, which brings up a pop-up menu. Change the Levels to 21. This produces the distinct gradients shown in the figure opposite.
Print the dot structure density test on the emulsion side of the transparency with the inkjet printer you plan to use for photo stencils. Set the printer to best quality, Black. If the printer has the option, print with two cartridges of matte black ink. To print AZON 787N Clear Graphic Film in the Epson PRO 7600 Inkjet Printer: Select the printer and film size; in Print Settings, select Black, Adhesive Vinyl, Advanced (uncheck all boxes), 720 dpi.

Straighten any angled lines: Select, All; Edit, Transform, Skew.
If the image was scanned, sharpen the image in increments; do not sharpen digital camera images. To sharpen: Filter, Sharpen, Unsharp Mask, check Preview so you can see the effect. Use 25-50%, 1-3 Radius, 0-2 Threshold, as shown in the figure opposite. Save as a new tiff file. If needed, repeat these steps and save as another new tiff file and add "fixed" to the title.

Layers of ImagOn can be laminated to a single plate after exposure. Standard tray development affects only the top layer. Hand development with spit-bite over-develops the top layer, which reveals the lower layer in selected areas. Dark tonal areas of ImagOn are thinner than light tonal areas so dark tonal areas respond more readily to spit-bite treatment to reveal the lower layer.
The print was produced by exposing a laminated ImagOn plate with the text stencil in the top photo; Arial Font 12 does not require an aquatint screen exposure since the font is smaller than 1/8 inch.
Wrinkled Intaglio-Type is a variation on Layered Intaglio-Type. ImagOn is laminated to one plate and another piece of ImagOn is taped to a separate plate for exposure. After exposure of both plates, the taped plate is wrinkled over the laminated ImagOn plate prior to standard tray development. Hand development with spit-bite may be used to reveal more areas of the lower image, if desired.
32. Construction Intaglio-Type
Expose the pieced plate with a text stencil. The text stencil used here is Arial Font 12; the lines are finer than 1/8 inch so an aquatint screen exposure is not needed prior to the image exposure with this text stencil (bottom photo).
Steps
Cut ImagOn-Ultra pieces and adhere to a prepared plate, leaving open areas. Remove the Mylar from the pieces before overlapping more pieces. Laminate each individual piece to the plate with a squeegee.
The second photo is a proof print made after three more rounds of exposure and hand development with spit-bite procedures.
Materials and equipment
Remove the Mylar from the unexposed ImagOn plate and place the ImagOn plate on the hot plate.
Turn the printmaking hot plate on and set the temperature to 110°F ahead of time. The temperature should not become too hot for finger touching.
Heat the construction plate until the Gum Arabic dries. Remove the construction plate from the hot plate.
Manipulate the photograph in Photoshop as desired; end by changing the Mode to Grayscale and the Curves to 80% and 15% to avoid the necessity for an aquatint screen exposure. Print a transparency. The photo (right) has been manipulated in Photoshop, including the Mode and Curves changes in preparation for use as a photo stencil.
34. Ghost Printing with Paper Stencils
35. À la Poupée Inking 
Materials and equipment
To create a border, select Black as the foreground color in the Toolbox. Select, All. Edit, Stroke. In the drop-down menu: select Inside, Blending Normal, 100%.
Steps

37. Four Color Inversion Printing
Wearing the headlight to aid positioning, place the red plate face-side-down on the printing stock in alignment with the yellow image (fourth photo). Cover the stock and plate with paper. Run through the press.
Wearing the headlight to aid positioning, place the cyan plate face-side-down on the printing stock in alignment with the yellow-red image (sixth photo). Cover the stock and plate with paper. Run through the press.
Wearing the headlight to aid positioning, place the black plate face-side-down on the printing stock in alignment with the yellow-red-cyan image (eighth photo). Cover the stock and plate with paper. Run through the press.
38. Printing with Chine Collé 
Materials and equipment
Reworking with Liquid Aquatint and Mezzo-Type
Reworking with Mezzo-Type requires: a small container of screenfiller; stirring device; painting tools; developed ImagOn plate; inking and printing supplies. 
Nitric acid etching solution
Dutch mordant contains diluted hydrochloric acid (HCl) and potassium chlorate (KClO3); the molecular structure of hydrochloric acid is shown at the right above the molecular structure of potassium chlorate (source: Wikipedia Online Dictionary). Dutch mordant produces toxic chlorine gas fumes that cause acute respiratory damage. The potassium chlorate in Dutch mordant is a strong oxidizer that can cause fire or explosion. Graphic Chemical & Ink Company, a printmaking supplier, has refused to carry the ingredients for Dutch mordant since the 1980s.


Always de-oxidize a copper or brass plate each time it is lifted from Edinburgh Etch. Oxidation occurs whenever the plate is exposed to air or water. The oxidation coating prevents further etching if the plate is re-submerged in Edinburgh Etch (or unmordanted ferric chloride solution) and prevents any additional acrylic resists adhering to the plate. Note: de-oxidizing does not adversely affect ImagOn or acrylic resists on the plate.
Etch Copper and Brass
3. Copper and Brass Plates
Prior to etching: fill an aerated vertical etching tank with Edinburgh Etch and prepare de-oxidant solution as described in the Edinburgh Etch topic; prepare the plate according to the previous topic, and apply a ground, or resist, to the degreased front of the plate using any of the techniques outlined below. Etch copper or brass only in Edinburgh Etch; etch no other metals in Edinburgh Etch. The rule is: warm-colored plates in warm-colored etchant.
Recipe
Etch Zinc, Steel, Aluminum
Nature of acrylics
Soft Ground Resist
Graphic Chemical's Water Soluble Relief Inks and Imagery
Materials and Equipment
Hard and Soft Ground
Hard Ground Resist
Hard and Soft Ground
Aquatint (from aquafortis, Latin for "strong water", and tinto, Italian for "tone") is a resist that permits producing an image solely with variations in tone (rather than with lines). Traditionally, a metal plate was dusted with tiny rosin particles and then heated to adhere the particles; acid etched the tiny exposed metal areas between the acid-resist particles. Spraying a fine mist of diluted acrylic on a metal plate with an airbrush produces a range of tones from white to velvety black without the dangers associated with rosin dust. 
Place a small container of soapy water nearby. After each use of the airbrush, insert it in the soapy water and depress the trigger/valve to prevent clogging, as shown (right). Whenever the airbrush is not in use, leave it in the soapy water. 
Prepare a copper plate for etching: sand with 600 grit wet/dry sandpaper and degrease.
Aquatint
ImagOn
photo-emulsion makes an effective stencil for photoetching. For
bitmap, text, line art or halftone transparencies with resolution less
than 120 ppi, the emulsion does not need to be thinned prior to
exposure with a prepared transparency and an aquatint exposure is
unnecessary.
Rinse gently in
a tray of water; spray vinegar; hand-wipe the
vinegar off; pat dry; heat to stabilize the ImagOn-Ultra. Leave
overnight.
ImagOn photo-emulsion makes an effective stencil for photoetching. For bitmap, text, line art or halftone transparencies with resolution less than 120 ppi, the emulsion does not need to be thinned prior to exposure with a prepared transparency and an aquatint exposure is unnecessary.
Convert to a bitmap image: Image > Mode > Bitmap > Method: Pattern Dither and Resolution Output 106 ppi (See second figure). Notes: Bitmap converts a tonal image to graphics so grays are translated as dots without any tonality; this increases contrast. Pattern dither is more random than halftone dither. Any resolution less than 120 ppi works.
30 minutes, checking periodically. When etching is desired depth, remove plate from etchant. Rinse. Remove the emulsion in stripping solution. Rinse. Blot dry. Dry on a hot plate on Low.