2081-577 Printing Process Control Quiz 5 — Screening Name _______________ Date ________________ 1. Which is the best method to increase accuracy of rendering screen ruling and screen angle for AM screening? A Increase the addressability of the output device B Use a coarser screen ruling C Add noise to the image in the RIP D Use more than one halftone dot in the halftone cell E Use a bitdepth of more than 1 2. If there are not enough graylevels and therefore banding or posterizing occurs, what can be done to reduce this effect? A Add a transfer curve (to open up the shadows of an image that is too dark because the screen ruling is too fine. This makes the bands less visible) B Blur the image slightly to soften the edges of the bands. C Add a small amount of noise to the image D Use AM screening E Both C and D 3. When the same ink film thickness is applied to a coated paper and an uncoated paper, the density of the coated paper will be _______ than that of the uncoated paper. Such a difference is mainly due to _______. A. Lower, gloss B. Higher, gloss C. Lower, illumination angle D. Higher, illumination angle 4. In tone and color analysis, which factor has the biggest impact on the size of the process ink color gamut? A. Solid ink density B. Dot gain C. Print contrast D. Hue error 5. Based on the Murray-Davies formula for dot gain calculation, what is the maximum % dot gain possible for a 50% midtone? A. 30% B. 50% C. 70% D. 90%6. Which of the following best describes how dot gain is compensated in FM screening and printing? A. The microdot cluster is reduced from 2 x 2 to 1 x 1 spots B. The frequency of microdots are reduced C. The solid ink density is reduced at presswork D. All of the above 7. When compensating dot gain differences in plate/press curve between a reference printing condition and a sample printing condition, A. The reference printing condition is altered B. The sample printing condition is altered C. The data sent to the sample printing condition is altered D. Both reference and sample printing conditions are altered Essay questions 1 List 4 frequencies that interact with one another (and might cause moirés) when an image is rendered in a digital