Spots, Dots, Rulings, Angles, Moirés and More: An Introduction to Screening for Flexography

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FTA Membernar logo

September 17
11 a.m. ET
Mark Samworth

Spots, Dots, Rulings, Angles, Moirés and More: An Introduction to Screening for Flexography

This Membernar is part one of a two-part series on screening for flexography. In this “introductory level” presentation, Mark will take a look at some of the basics of flexographic screening—including resolution, dot shapes and screen angles. He will then go beyond the basics to look at angle systems, rosette structures, moirés and more. Mark concludes with a look at transitional (AM/FM) screens as well as cell patterns designed for ink transfer.

Join Mark as he explains:

  • How color is reproduced on a flexographic press by using screens made up of halftone dots of different sizes.
  • The basic parameters of screening technology, including dot shape, screen ruling and screen angle.
  • Computer-to-Plate resolution and its impact on dot quality.
  • Why screens that combine AM/FM screening categories are called “transitional” or “hybrid.”
  • How screens can enhance ink transfer by imaging smaller “cells” into the larger dots.

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About Our Presenter

headshot Mark Samworth

Mark Samworth, Esko

Mark Samworth began his career with DuPont, where he held numerous positions in the areas of flexographic plates and electronic imaging. Mark joined Esko in 1997 and is currently focused on consulting in screening, calibration, G7, color management and expanded gamut. He holds 11 patents in digital imaging, including FlexoCal, Hybrid Screening, Plate Cell Patterning, Concentric Screening, Equinox expanded gamut technology and PressSync. He has authored numerous articles in the industry’s major trade publications and presented many papers at the industry’s major trade forums. In May of 2011, Mark was inducted as the 49th member of the FTA Hall of Fame. Mark received his Bachelor of Science from RIT and his MBA from the University of Delaware. He lives in Wilmington, DE.