Isihluthulelo sekhwalithi yokuphrinta ye-inki: i-viscosity

I-viscosity ithonywa izici eziningi, okuhlanganisa i-viscosity engokwemvelo yesisombululo se-binder resin, izakhiwo ze-pigment (njengokumunca uwoyela, isilinganiso, usayizi wezinhlayiyana, nokuhlakazwa), ukuhambisana phakathi kombala nezibophezelo, kanye nohlobo nenani lezincibilikisi. Ukuthambekela kwesikhathi esizayo koyinki bepulasitiki be-intaglio iyinhlanganisela yokugxila okuphezulu okune-viscosity ephansi.

• I-Viscosity inomthelela omkhulu kwikhwalithi yokuphrinta: i-viscosity ephezulu inciphisa uketshezi, okuholela ekugcwalisweni okungaphelele kwamaseli noma amabala amhlophe; inamandla amakhulu ku-blade kadokotela, okubangela ubunzima bokukhuhla kanye nemigqa ye-blade; futhi kuphazamisa ukudluliselwa kukayinki, okuholela ekuvinjweni. Ngokuphambene, i-viscosity ephansi kakhulu ikhuthaza ukugeleza kukayinki okweqile, okubonakala njengama-watermark, ukucaca okuncishisiwe, kanye namathuba akhulayo ezinkinga ze-electrostatic, ezithiya ukufana kombala.

• I-viscosity yokusebenza kayinki kufanele ilungiswe ngokuya ngesivinini sokuphrinta kanye nezici zamapuleti. Ukuphrinta ngesivinini esikhulu kudinga i-viscosity ephansi ukuze udlulise kahle uyinki; kodwa-ke, ama-inki aphansi angase athuthukise ama-watermark kuma-viscosity aphansi kakhulu, angafanelekile izinqubo zesivinini esikhulu. Amathoni ajulile nezindawo eziqinile zidinga oyinki abaphezulu be-viscosity ukuze kukhiqizwe okuningiliziwe, kuyilapho izifunda ezilula, ikakhulukazi lezo ezinezici ezinhle kakhulu, zizuza koyinki be-viscosity abaphansi. Oyinki bekhwalithi ephezulu banikeza uhla olubanzi lwama-viscosity aguquguqukayo, kanti abampofu banobubanzi obuncane futhi banqunyelwe ukusebenza kuma-viscosity aphezulu.

• Izinto ezithonya i-viscosity ye-inki yokusebenza zihlanganisa isilinganiso sokwengezwa kwe-solvent, ukusebenza kahle kokuncibilika kwe-solvent, izinga lokushisa le-ambient ne-inki, izinga lokuhwamuka kwe-solvent, kanye nebhalansi ye-solvent. Ukwengeza ama-solvents ngendlela efanele kungalungisa i-viscosity, kodwa ukweqisa kungase kubangele amaphutha; inhlanganisela ye-solvent ehlukene ithuthukisa ukuncibilika; ukushintsha kwezinga lokushisa kuthinta i-viscosity nesikhathi sokumisa; ukuhwamuka kwe-solvent kudinga ukugcwaliswa kabusha ngesikhathi ukuze kugcinwe i-viscosity ezinzile; futhi ukungalingani kwe-solvent kungabangela ukungafani kwe-viscosity noma imvula ye-resin, edinga ukulungiswa kokubunjwa kwe-solvent ukuze kubuyiselwe ukulingana.