Bliska infracrvena spektroskopija keramičkih boja namijenjene umjetničkom slikarstvu

Ulla Lanier Maksan, Sandra Koprivnjak, Maja Strgar Kurečić

Sažetak

Za slikanje na keramici razvijena su bojila za infracrveno slikarstvo. Za bojila su određene Z vrijednosti, što omogućuje umjetničkoj slikarici Nadi Ziljak izradu kolekcije dvojnih IRArt slika na porculanu. Vrijednosti absorpcije svjetlosti su određena za području 400-900 nm. Spektroskopske vrijednosti sugeriraju popravke miješanja bojila u postupcima postizanja nevidljive, skrivene grafike. Takva grafika se prepoznaje pomoću ZRGB kamere. Mješavina Y i K boja ima prošireni maksimum absorpcije u rasponu 660-760 nm. To ih razlikuje od ostalih bojila u drugim grafičkim tehnologijama. Eksperimentalni plan uključuje svojstva transparentnosti bojila a razvijen je i podešen za bojila za keramiku za stvaranje infrared umjetničkih slika. Načinjena je Spektralna analiza osnovnih komponenti i mješavine boja. Umjetnička djela su skenirana uz blockade svjetla kod 560, 650, 710 i 1000 nm. Nova procedura je postavljena za određivanje originalnosti umjetničkih djela na porculanu i keramici.

Ključne riječi: infrared bojila, Infrared keramik painting, NIR spektroskopija, skeniranje s blokadama, blizanci boja

Near infrared spectroscopy for ceramic inks intended for artistic painting

Ulla Lanier Maksan, Sandra Koprivnjak, Maja Strgar Kurečić

Abstract

For ceramic painting special inks for infrared painting are developed. Inks have been assigned with Z value, what ensures art painter Nada Žiljak to create a collection of double IRArt images in the porcelain material. Light absorption values were determined in range from 400 to 900 nm. Spectroscopic values suggest corrections mixing inks in the processes of achieving invisible, hidden graphics. Such graphics can be recognized by ZRGB camera. Mixture of Y and K inks have an extended maximum light absorption in the range 660-760 nm. This distinguishes them from other inks in other graphics technologies. The experimental plan includes properties of transparency inks and has been developed and adjusted for inks for ceramics to create the infrared paintings. Spectral analysis for pure components and inks mixtures is performed. Art works are scanned with blockades of light at 560, 650, 710 and 1000 nm. A new procedure is set for determining originality for art works inks on ceramic and porcelain materials.

Ključne riječi: infrared inks, Infrared ceramic painting, NIR spectroscopy, scanning with blockades, twins colors


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