User`s manual

127
Version 1.1 Revised February, 2009
Chapter 9 - Print Modes and Printer Information
FastRIP Proof at 45 LPI-Ultra
FastRIP Proof at 55 LPI-Ultra
FastRIP Proof at 65 LPI-Ultra
Ha l F t O n e Fr e Q u e n C y , an g l e a n d SH a p e
Both FastRIP XL and FastRIP LF create an excellent halftone at a line count of up to 133 lines
per inch (LPI). As you get higher than 133 LPI, slight banding may occur. is is due to the
fact that at a printer resolution of 2880 x 1440 DPI, a higher line count will produce more gray
levels.
FastRIP XL and FastRIP LF do a good job of creating whatever dot shape you set. While it has
been a commonly held belief that an elliptical dot was better, you might find that with an inkjet
printer, round is a better dot shape choice.
When printing halftone dots on or next to halftone dots, optical patterns can form called ”Moiré
Patterns.” ese patterns look like checker boards and are not desirable. To minimize Moiré
Patterns, use a halftone angle of 25 degrees for all screens on photorealistic jobs. is is called
”Simulated Process Color.” For normal CMYK Process Color, try angles of Cyan 15, Magenta
45, Yellow 75 and Black 75 (Yes, the Black and Yellow are the same angles.)
Ou t p u t t i n g F r O m ap p l i C a t i O n S
When using FastRIP XL ,select printer Epson Stylus Pro 7800-Full or Epson Stylus Pro
7800-Sheet. When using FastRIP LF, select printer Epson Stylus Pro 9800-Full or Epson Stylus
Pro 9800-Sheet. e ”Full” is for full roll and the ”Sheet” is for sheet fed. Make sure you have
installed both drivers.