Get Your Dots Right

Media can vary from batch to batch. Watch the batch numbers on your film and paper supplies. Use your media a batch at a time, and calibrate each time you start a new batch.

Imagesetters create an electronic version of the traditional halftone screen. Screening software in the imagesetter applies an electronic dot pattern to the electronic image. Halftone dots are formed by the combination of the image recorder resolution (dpi) and the screen frequency (lpi). Figure B shows their relationship.