2081-577 Printing Process Control Quiz 6 — Device Optimization and CTP Name _______________ Date ________________ 1. If an output device has an addressability of 2,400 spi, then the side length of an addressability square is close to _______. a) 0.0004” b) 10.6 µm c) 256 nm d) Both a and b 2. At 2,400 spi addressability, a single 150 lpi AM halftone dot is made up of what size halftone cell? a) 8 x8 spots b) 16x16 spots c) 256 gray levels d) 254 µm 3. A thermal imaging device might use energy at a wavelength of? a) < 400 nm b) 550 nm c) 400-700 nm d) 830 nm 4. How many gray levels can a device with a bitdepth of 4 produce on each spot? a) 16 b) 256 c) 16.7 million d) 4 5. The addressability of a laser imaging device is affected by a) How well the laser is focused b) Laser exposure level (power wattage) c) The type of imaging material used d) None of the above 6. What screen ruling is just about fine enough where the halftone is seen at the typical reading distance as continuous tone and not as dots? a) 60 lpi b) 60 l/cm c) 600 spi d) 2,400 spi7. Which output devices have a gray level bit depth of one? a) Lithographic presses b) NextPress c) Ink jet d) Xeikon 8. The following output devices have a gray level bit depth of one except a) Imagesetters (CtF) b) Platesetters (CtP) c) Flexo printing d) DocuColor12 9. What is the smallest dot area difference in the midtones of a 150 lpi screen tint that is just perceptible? a) 0.1% b) 1% c) 5% d) 10% 10. An SOP for platemaking, as discussed in the lecture, describes a) How a subsystem is calibrated b) How a subsystem is optimized c) How a printing system is characterized d) How a color management system is