Baigiamajame magistro darbe buvo lyginama ofsetinės ir fleksografinės spaudos kokybė spausdinant spalvines kontrolines skales, spalvų sutapdinimo kryžius, skiriamosios gebos elementus. Atspaudai buvo atspausdinti ofsetine lapine spaudos mašina ir siauraritinine fleksografinės spaudos mašina su centriniu spaudos cilindru. Mikroskopu buvo matuojamas spalvų sutapdinimo tikslumas, skiriamosios gebos elementų dydis. Densitometru buvo matuojamas atskirų ir binarinių spalvų rastrinių taškų santykinis plotas bei įvertintas gradacinis tikslumas. Pagal gautus kiekybinius rezultatus nustatyta, jog fleksografinės spaudos kokybė prastesnė negu ofsetinės spaudos. Darbą sudaro šios dalys: įvadas, literatūros apžvalga, kokybės reikalavimai, problemos analizė, eksperimento eiga ir rezultatų analizė, išvados, literatūros sąrašas. Darbo apimtis – 80 p. teksto be priedų, 65 pav., 43 lentelės, 18 literatūros šaltinių. / In master thesis was compared the offset and flexographic printing quality. Printing quality was evaluated using control strips, register crosses, resolving power test elements. Jobs were printed with offset sheet-fed printing press and flexographic narrow web press with central impresion cilinder. Register accuracy and resolving power were investigated using microscope. Dot area of single and binary colors wes measured with densitometer and halftone graduation characteristics were evaluated. On the basis of quantitative results it was determined that offset printing quality in comparison with flexography is higher. Master thesis comprise of folowing chapters: literature review, quality requirements, experimental, results and discusion, conclusions, references. Amount – 80 pages, 65 figures, 43 tables, 18 references.

It was investigated the colour reproduction on prints made in ink-jet printer. Experimentally investigated gradation characteristics of CMYK colours. It was made a 26 step strip with raster dots from 0 to 100 %. Prints were made at different printing regimes on papers with different whiteness. Zone optical densities were measured, compared with theoretical density values and gradational distortions were determined. Also were measured 100% raster strips in CIE L*a*b* coordinate system and defined the maximum reproduction of colours in ink-jet printer.