Pens and Inks, ContinuedInkInk is a water-soluble emulsion of opaque pigment. Ink comes in colors, butthe most opaque and the color you will be most familiar with is black.Although you can thin ink with water, once ink dries it becomes waterproof.Old ink is no longer useful. The emulsion separates or the pigment thickens.If the ink has separated, throw it away. If the ink has thickened, you may beable to salvage it by adding a small quantity of water. Thinning ink withwater reduces opacity.Ink drawingDrawings made in ink are referred to as line drawings. The image is blackand white. Areas that appear grey do so only by textural variation.TexturalvariationsStipple and crosshatch are examples of textural variations. How light or darkareas appear depends on the ratio of black ink lines to the white paper spacebetween the lines. When rendering textural effects, make sure the first set oflines dry before crossing them with another. If you do not, the lines pooland blur or the paper becomes saturated and the pen nib tears the paper fiber.Figure 1-23 shows lines made by a variety of pens and brushes.Figure 1-23.—Varied effects with different pen points andbrushes.Continued on next page1-37
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