USPOREDBA SPEKTROGRAMA BOJA NA PAPIRU RAZLIČITE GRAMATURE

Aleksandra Bernašek Petrinec, Katija Milković

Sažetak

Zbog različite upojnosti i općenito različitih svojstva papira, boja može poprimiti potpuno drugačiji izgled od zamišljenog. Puno je faktora koji utječu na vizualni dojam nijanse određene boje. Testiranja su rađena na papirima raznih gramatura. Promatrane su četiri nijanse boje vidljivog spektra, otisnute na papirima od 80g/m2, 160g/m2 i 250g/m2. Odabrani uzorci analizirani su i uspoređivani na uređaju za digitalnu forenziku, gdje su mjerenjem apsorpcije u definiranim poljima dobivene spektrofotometrijske krivulje. Izmjerene valne duljine dale su uvid u fizikalne podražaje koje izaziva određena, definrana boja.

Ključne riječi: spektrofotometrija, boja, gramatura papira

COMPARISON OF COLOR SPEKTROGRAMS ON PAPER WITH DIFFERENT GRAMMAGE

Aleksandra Bernašek Petrinec, Katija Milković

Abstract

Due to the different absortion and generally different properties of papers, colors can take completly different aperance from the one that is conceived. There are many factors that affect the visual impression of a certain color shade. Test have been done on variety of paper grammage. Four shades of colors in the visible spectrum were observed, printed on paper of 80g/m2, 160g/m2 i 250g/m2. Selected samples were analyzed and compared on the device for digital forensics, where by measuring apsorptions in definded fields obtained spectophotometric curve. Measured wave lenght provide insight in physical stimuli that certain, defined color excites.

Keywords: spectrophotometry, color, paper grammage

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