Original scientific paper

An analytical approach for determining the mechanical dot gain of AM and FM screen technology

Dean Valdec orcid.org/0000-0001-6897-8601 ; Sveučilište Sjever, Sveučilišni centar Koprivnica, Hrvatska
Darijo Čerepinko orcid.org/0000-0001-9234-9573 ; Sveučilište Sjever, Sveučilišni centar Varaždin, Hrvatska
Mario Tomiša orcid.org/0000-0002-0221-0138 ; Sveučilište Sjever, Sveučilišni centar Koprivnica, Hrvatska

Abstract

FM screening technology differs from conventional AM screening by the absence of screen ruling and the use of micro dots to represent the tonal values in an image. Mechanical dot gain is the change in geometrical dot size that occurs during the reproduction process. The major question of this study was to define the relationship between mechanical dot gain of AM and FM screening technology. Using two independent analytical methods, based on mathematical equations, the transition points of percentage dot area were defined where dot gain at both screening technology has the same value. The research results show that using both methods get identical values important for choosing a raster technology and defining basic parameters of screening.

Keywords

mechanical dot gain; TVI - tone value increase; AM and FM screen technology; dot diameter; dot perimeter

Hrčak ID:

149764

URI

https://hrcak.srce.hr/149764

Publication date:

15.12.2015.

Article data in other languages: croatian

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