Naslov
The Influence of Paper on Physical-Chemical Characteristic Change of Fountain Solution

Autori
Gojo, Miroslav ; Mahović, Sanja ; Agić, Darko ; Mandić, Lidija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Annals of DAAAM for 2003 & Proceedings of the 14th International DAAAM Symposium / Katalinic B. - Beč : DAAAM International Vienna, 2003, 167-168

Skup
The 14th International DAAAM Symposium "INTELLIGENT MANUFACTURING & AUTOMATION: FOCUS ON RECONSTRUCTION AND DEVELOPMENT"

Mjesto i datum
Sarajevo, Bosna i Hercegovina, 22.10.2003. - 25.10.2003

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
contact angle; electrical conductivity; fountain solution; paper; pH value; surface tension

Sažetak
Paper with its properties and the way of producing in the process of offset printing changes properties of fountain solution. This is especially in respect with newspaper paper, where for the reasons of alkaline paper production process and its composition and structure, pH value in the printing process significantly changes. Except pH value, electrical conductivity and surface tension changes, as well other physical-chemical parameters. Investigations in this paper covered physical-chemical measurements of fountain solution in dependence on the quantity of newspaper printing paper, as well interacting time of the paper to the fountain solution. The results show that the addition of paper to the solution raises all physical chemical parameters. The wetting process is carried out in a mild acid media, in a pH range 4.4 to 4.9. Increasing pH value above 6 could cause a permanent damage of boemite Al2O3 structure that forms nonprinting elements, and that could cause changes in nonprinting elements structure and change their hydrophility. The increase of surface tension and contact angle of the fountain solution could cause significant changes in physical-chemical properties. These changes are evident in disturbing the emulgation ratio and the ink-water ratio.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA