GRA 324 Final: GRA324 Exam Review
12 Dec 2013
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Document Summary
Should improve automation & efficiency so there are less downtime, spoilage and re-runs. >fan + hot-air can reducing drying/setting time by 1/2. >needs uv inks+coating in-line or (i. e. ,die-cutting, embossing) surface finishing. Gloss(optical effect) gives a better look, more attn. from people print enhancement. I. e. , slitting in a pocket holder non-stop sheet feeder. Useful in improving efficiency, saves time automation in print media. Mechanical devices can feed ink/dampening solution automatically to the fountains. Paper ph is necessary (4. 5 is the target) Can be chronic (all the time) or sporatic (occasionally) Ink problems usually mean that ink is not suitable fo the paper or that. Fountain solution is too acidic that causes ink drying problems. *know the 23 most common printing problems (refer to handout) ink in the non-image area. Problems such as catch up, tinting, toning, scumming can occur. Too much ink will show up in areas with ink in the non-image areas.
