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Fleksografinių spausdinimo formų paruošimo procesų tyrimas / Investigation of the preparation of flexo printing platesVelebskaja, Aliona 19 June 2010 (has links)
Magistro studijų baigiamajame darbe išanalizuoti fleksografinių spausdinimo formų gamybos procesai, išnagrinėti ir atskleisti vaizdų rastravimo ypatumai, detaliai aprašyta originalo (projekto) paruošimo spausdinimui eiga ir spausdinimo formų gamyba. Eksperimentiškai ištirta rastravimo proceso režimų įtaka spausdinimo formų kokybei naudojant skirtingas skaitmenines plokštes. Nustatytos geriausios rastravimo programų versijos atskiriems atvejams. / In the MS thesis are analyzed procedures of the flexographic printing plates manufacturing. The peculiarities of the screening processes are revealed. The details of the workflow of the preparation of the originals (projects) for printing and the process of printing plates manufacturing are described. Experimentally is investigated the influence of the screening regimes on the quality of the printing plates using different photopolymeric plates. The best versions of the screening program for the particular cases were determined.
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Ofsetinių spausdinimo formų paviršinių savybių tyrimas / Investigation of surface charakteristics of offset printing platesŠimėnas, Mindaugas 16 June 2006 (has links)
It was investigated characteristics of surfaces of offset printing plates. A method of measurement of wetting angle was improved and there were investigated the wetting characteristics of hydrophilic surfaces of offset printing plates and their dependence on dampening solution and on printed run. Experimentally investigated 16 offset printing plates. Wetting angle increases with the run. Surface roughness was investigated using profilograph. Changes of surface roughness during printing were determined and it was found that during printing quantity of bigger over 1 µm irregularities increases.
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