Ngokubanzi, ukuprintwa kwe-UV kubandakanya ezi ndidi zilandelayo zobuchwepheshe:
1. Izixhobo zoMthombo wokukhanya kwe-UV
Oku kuquka izibane, izixhobo zokubonakalisa ubushushu, iinkqubo zokulawula amandla, kunye neenkqubo zokulawula ubushushu (ukupholisa).
(1) Izibane
Izibane ze-UV ezisetyenziswa kakhulu zizibane zomphunga ze-mercury, eziqulathe i-mercury ngaphakathi kwityhubhu. Kwezinye iimeko, ezinye iintsimbi ezifana ne-gallium zongezwa ukulungisa i-spectral output.
Izibane ze-metal-halide kunye nezibane ze-quartz nazo zisetyenziswa kakhulu, kwaye ezininzi zisathengwa kwamanye amazwe.
Uluhlu lobude be-wavelength olukhutshwa zizibane ze-UV eziphilisayo kufuneka lube phakathi kwe-200–400 nm ukuze lusebenze kakuhle ekuphilisa.
(2) Izinto ezibonisa ukukhanya
Umsebenzi ophambili wesibonisi kukubuyisela imitha ye-UV kwi-substrate ukuze kwandiswe ukusebenza kakuhle kokuphilisa (UV Tech Publications, 1991). Enye indima ebalulekileyo kukunceda ukugcina ubushushu obufanelekileyo bokusebenza kwesibane.
IiReflectors zihlala zenziwe nge-aluminium, kwaye ukubonakalisa kufuneka kufikelele kwi-90%.
Kukho uyilo olusisiseko lwezibonisi-mbonakalo ezimbini: olugxile (oluyi-elliptical) nolungagxile (oluyi-parabolic), kunye notshintsho olongezelelweyo oluphuhliswe ngabavelisi.
(3) Iinkqubo zoLawulo lwaMandla
Ezi nkqubo ziqinisekisa ukuba imveliso ye-UV ihlala izinzile, igcina ukusebenza kakuhle kokulungisa kunye nokuhambelana ngelixa ihlengahlengisa isantya sokuprinta esahlukileyo. Ezinye iinkqubo zilawulwa ngekhompyutha, ngelixa ezinye zisebenzisa ulawulo lwe-microcomputer.
2. Iinkqubo zokupholisa
Ngenxa yokuba izibane ze-UV azikhuphi nje kuphela imitha ye-UV kodwa zikwakhupha nobushushu be-infrared (IR), izixhobo zisebenza kumaqondo obushushu aphezulu (umzekelo, ubushushu bomphezulu wezibane ezisekwe kwi-quartz bunokufikelela kumakhulu aliqela ee-degrees Celsius).
Ubushushu obugqithisileyo bunokunciphisa ixesha lokusebenza kwezixhobo kwaye bunokubangela ukwanda okanye ukuguqulwa kwe-substrate, okukhokelela kwiimpazamo zokubhalisa ngexesha lokuprinta. Ke ngoko, iinkqubo zokupholisa zibaluleke kakhulu.
3. Inkqubo yoNikezo lweInki
Xa kuthelekiswa nee-inki ze-offset eziqhelekileyo, ii-inki ze-UV zinoburhabaxa obuphezulu kunye nokungqubana okukhulu, kwaye zinokubangela ukuguguleka kwiindawo zomatshini ezifana neengubo kunye neerola.
Ngoko ke, ngexesha lokuprinta, i-inki esemthonjeni kufuneka ihlale ishukunyiswa, kwaye iirola kunye neengubo ezikwinkqubo ye-inki mazibe zizinto ezenzelwe ngokukodwa ukuprinta nge-UV.
Ukugcina uzinzo lwe-inki nokuthintela utshintsho lwe-viscosity olunxulumene nobushushu, iinkqubo zokulawula ubushushu ezijikelezayo nazo zibalulekile.
4. Iinkqubo zokusasaza ubushushu kunye nokuphuma komoya
Ezi nkqubo zisusa ubushushu obugqithisileyo kunye ne-ozone eveliswa ngexesha le-inki polymerization kunye ne-curing.
Ngokwesiqhelo ziquka injini yokukhupha umoya kunye nenkqubo yokuhambisa umoya.
[Ukuveliswa kwe-ozone kunxulunyaniswa kakhulu namaza e-UV angaphantsi kwe-~240 nm; iinkqubo ezininzi zanamhlanje zinciphisa i-ozone ngokusebenzisa imithombo ehluziweyo okanye ye-LED.]
5. Ii-inki zokuprinta
Umgangatho we-inki yeyona nto ibalulekileyo echaphazela iziphumo zokuprintwa kwe-UV. Ukongeza ekuchaphazeleni ukuveliswa kombala kunye nobungakanani obuhlukeneyo, ukuprintwa kwe-inki kumisela ngokuthe ngqo ukunamathela, amandla, kunye nokumelana nokukrweleka koshicilelo lokugqibela.
Iimpawu ze-photoinitiators kunye nee-monomers zibalulekile ekusebenzeni.
Ukuqinisekisa ukunamathelana okuhle, xa i-inki ye-UV emanzi idibana ne-substrate, uxinzelelo lomphezulu we-substrate (dynes/cm) kufuneka lube phezulu kunolo lwe-inki (Schilstra, 1997). Ke ngoko, ukulawula uxinzelelo lomphezulu we-inki kunye ne-substrate bubuchwepheshe obuphambili ekuprintweni kwe-UV.
6. Izixhobo zokulinganisa amandla e-UV
Ngenxa yokuba izinto ezinje ngokuguga kwezibane, ukuguquguquka kwamandla, kunye notshintsho lwesantya sokuprinta zinokuchaphazela ukuphiliswa, kubalulekile ukujonga nokugcina amandla e-UV ezinzile. Ke ngoko, iteknoloji yokulinganisa amandla e-UV idlala indima ebalulekileyo ekuprintweni kwe-UV.
Ixesha leposi: Disemba-30-2025
