Document Detail


Microscopic studies of the influence of main exposure time on parameters of flexographic printing plate produced by digital thermal method.
MedLine Citation:
PMID:  19422049     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The digital thermal technology of producing flexographic printing plates from photopolymer plates is one of the newest technologies. This technology allows to develop flexographic plates without the use of any solvent. The process of producing flexographic printing plates by the digital thermal method consists of several main stages: back exposure, laser exposure, main exposure, thermal development, post exposure, and light finishing. The studies carried out with the use of optical stereoscopic microscopy allowed to determine the effect of time of main exposure to ultraviolet radiation on the dot area, diameter, and edge factor of halftone dots reproduced on flexographic printing plate produced by the digital thermal method, as well as on the quality of reproducing the surface and on the profiles of free-standing printing microelements. The results of the microscopic studies performed have allowed to define the criteria of establishing optimum time of main exposure of photopolymer plates used in the digital thermal technology of producing flexographic printing plates. A precise definition of the criteria for determining the optimum time of main exposure will enable to reduce the time-consuming control tests and to eliminate errors in both the process of manufacturing flexographic printing plates and in the printing process carried out with the use of such plates.
Authors:
Liliya Harri
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Microscopy research and technique     Volume:  72     ISSN:  1097-0029     ISO Abbreviation:  Microsc. Res. Tech.     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-09-30     Completed Date:  2009-11-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9203012     Medline TA:  Microsc Res Tech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  707-16     Citation Subset:  -    
Affiliation:
Institute of Mechanics and Printing, Faculty of Production Engineering, Warsaw University of Technology, Warsaw, Poland. l.harri@ztp.internetdsl.pl
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