Chosinthira cha 'Dual Cure' kukhala UV LED

Patatha pafupifupi zaka khumi kuchokera pamene anayambitsa, ma inki ochiritsira a UV LED akugwiritsiridwa ntchito mofulumira ndi osintha ma label. Ubwino wa inki kuposa ma inki a UV a mercury 'odziwika bwino' - kuuma bwino komanso mwachangu, kukhazikika bwino komanso kuchepetsa ndalama zogwirira ntchito - ukumveka bwino kwambiri. Kuphatikiza apo, ukadaulowu ukupezeka mosavuta pamene opanga atolankhani akupereka mitundu yambiri ya nyali zokhalitsa pamizere yawo.
Kuphatikiza apo, pali chilimbikitso chachikulu kwa osintha magetsi kuti aganizire zosintha ku LED, chifukwa zoopsa ndi ndalama zochitira izi zikuchepa. Izi zikuthandizidwa ndi kufika kwa mbadwo watsopano wa inki ndi zokutira za 'dual cure' zomwe zitha kugwiritsidwa ntchito pansi pa nyali za LED ndi mercury, zomwe zimathandiza osintha magetsi kuti agwiritse ntchito ukadaulowu pang'onopang'ono, osati mwadzidzidzi.
Kusiyana kwakukulu pakati pa nyali ya mercury yachikhalidwe ndi nyali ya LED ndi kutalika kwa mafunde komwe kumachokera kuti kuzizirike. Nyali ya mercury-vapor imatulutsa mphamvu pa sipekitiramu ya pakati pa 220 ndi 400 nanometers (nm), pomwe nyali za LED zimakhala ndi kutalika kwa mafunde kocheperako pakati pa 375nm ndi 410nm ndipo zimafika pachimake pafupifupi 395nm.
Inki za LED za UV zimatsukidwa mofanana ndi inki za UV zachikhalidwe, koma zimamva bwino kuwala kochepa. Chifukwa chake, zimasiyana wina ndi mnzake malinga ndi gulu la opanga ma photoinitiator omwe amagwiritsidwa ntchito kuyambitsa kuchiritsa; utoto, oligomers ndi monomers zomwe zimagwiritsidwa ntchito ndizofanana.
Kuyeretsa kwa LED ya UV kumapereka ubwino wamphamvu pa chilengedwe, ubwino, komanso chitetezo kuposa kuyeretsa kwachizolowezi. Njirayi sigwiritsa ntchito mercury kapena ozone, kotero palibe njira yochotsera yomwe ikufunika kuti muchotse ozone pafupi ndi makina osindikizira.
Imaperekanso mphamvu kwa nthawi yayitali. Nyali ya LED imatha kuyatsidwa ndi kuzimitsidwa popanda chifukwa chotenthetsera kapena kuziziritsa, zomwe zimapangitsa kuti ikhale yogwira ntchito bwino kuyambira nthawi yomwe yayatsidwa. Palibe chifukwa choti ma shutter ateteze gawo lapansi ngati nyali yazimitsidwa.