Details:
Summary:
Designing halftone dots has been done with fine craftsmanship and details about it have never been disclosed because the method is classified knowhow of the companies or the craftspeople up to now. At this time, the mathematical method to design halftone dots without such craftsmanship is invented and it is verified that the same halftone dots like the dots offered by many prepress companies are designed only based on the parameters and equations. The main issues are: 1.How to find out the shape of halftone dot pattern and 2.How to number the pixels within the halftone dot. In this paper, the algorithm about how to design the halftone dots is made clear. The relationship between characteristics of printers and the best halftone dots to suppress moire is discussed. Finally, the properties of the best halftone dots for web offset printers and office printers are proposed.