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Protection of prints by varnishing
Lokotschová, Radka ; Dzik, Petr (referee) ; Veselý, Michal (advisor)
This bachelor thesis deals with the issue of basic inkjet printing principles. It describes the continual stream and the drop on demand technique. It also deals with the issue of paper media, which are used during the inkjet printing – supporting bases and receiving layers. The thesis includes a description of print degradation, which is caused by UV-VIS radiation, pollutants, humidity or by elevated temperature. It also deals with the basic characteristics of varnishing and lamination.
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Barrier properties of varnishes for protection of photographs
Lokotschová, Radka ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
In this diploma thesis the basic principles of inkjet print, ink composition, print media and degradation mechanisms of ink dyes are summarized. The thesis deals with study of varnish barrier properties in coloured inkjet prints. Permeability of water vapour and oxygen (parts of atmosphere) depending on different coatings are tested there. In addition the influence of ozone on degradation of dyes was studied, while ozone was permeating through barrier varnish layer of inkjet print. Ozone plays an important role in degradation processes of the inkjet prints and it also causes a gas-fading. Concentrations of acting ozone were established by iodometric titration. Simultaneously kinetics of degradation of Orange 7 was studied on indicator papers.
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Barrier properties of varnishes for protection of photographs
Lokotschová, Radka ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
In this diploma thesis the basic principles of inkjet print, ink composition, print media and degradation mechanisms of ink dyes are summarized. The thesis deals with study of varnish barrier properties in coloured inkjet prints. Permeability of water vapour and oxygen (parts of atmosphere) depending on different coatings are tested there. In addition the influence of ozone on degradation of dyes was studied, while ozone was permeating through barrier varnish layer of inkjet print. Ozone plays an important role in degradation processes of the inkjet prints and it also causes a gas-fading. Concentrations of acting ozone were established by iodometric titration. Simultaneously kinetics of degradation of Orange 7 was studied on indicator papers.
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|
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Protection of prints by varnishing
Lokotschová, Radka ; Dzik, Petr (referee) ; Veselý, Michal (advisor)
This bachelor thesis deals with the issue of basic inkjet printing principles. It describes the continual stream and the drop on demand technique. It also deals with the issue of paper media, which are used during the inkjet printing – supporting bases and receiving layers. The thesis includes a description of print degradation, which is caused by UV-VIS radiation, pollutants, humidity or by elevated temperature. It also deals with the basic characteristics of varnishing and lamination.
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