Is there a preferred LPI (Lines Per Inch) for halftones?
The ideal LPI depends on your paper and presswork, but most printers printing on uncoated paper use a 100 LPI. Its a good balance of fine screen and easy printing. The higher the line screen, the more difficult it will be to print, because the high line-screen plate plugs up with ink in the shadows and looks murky over-all. Some printers prefer playing it safe and order 85 or 65 LPI. Using a lower LPI does make the dots coarser and more obvious. The finest line screen that we usually process is 133 LPI, although we would even question the use of 133 LPI, except on coated or hard papers. Our plates can hold detail to 200 LPI, but such a high line screen would be very difficult to print. If youd like a halftone for your image, you dont adjust the LPI. Just tell us what LPI youd like us to use, and well take care of the rest. You will, however, adjust the DPI of the image before submitting your file to us. Your images DPI should be at least one and a half times the size of the LPI. For a
