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Njengoba ubuchwepheshe bokuphrinta buqhubeka nokuvela, izindlela zendabuko zokuphulukisa i-ultraviolet (UV) ziya ngokuya zithathelwa indawo ubuchwepheshe bokwelapha be-LED. Izibani zokuphulukisa ze-LED azigcini nje ngokuhlinzeka ngokusebenza kahle kwamandla kanye nempilo ende yesevisi, kepha futhi zinciphisa kakhulu izindleko zokukhiqiza futhi zithuthukise ikhwalithi yokuphrinta. Le ndatshana ihlola izimiso, izinhlobo, izinzuzo, izimo zokufaka isicelo, nokucatshangelwa kokukhethwa kwezibani zokuphulukisa ze-LED emkhakheni wokunyathelisa, ukusiza abafundi ukuthi bathole ukuqonda okujulile kwalobu buchwepheshe besimanje bokwelapha. 1. Isimiso sokusebenza se-LED Curing Lamps Isibani sokuphulukisa se-LED sisebenzisa ama-diode akhipha ukukhanya (ama-LED) ukukhipha ama-wavelengths athile wokukhanya kwe-ultraviolet, okwenza kusebenze ama-photoinitiators kuma-inks wokuphrinta noma ukumboza. Lokhu kusebenzela kubangela ukusabela okusheshayo kwe-free-radical noma i-cationic polymerization, ukuguqula inkinobho yamanzi noma ukumbozwa kube yisiphetho esiqinile cishe ngokushesha. Uma kuqhathaniswa bendabuko mercury isibani ukuphulukisa, ukuphulukiswa LED inikeza izici ezilandelayo ezibalulekile: 2. Izinhlobo ezinkulu ze-LED Curing Lamps ekunyatheliseni Ngokuya ngendlela yokuphrinta nobubanzi obudingekayo bokuphulukisa, izibani zokuphulukisa ze-LED zingahlukaniswa ngezigaba eziningana. Isigaba ngasinye sihlukile ku-irradiance (ukuminyana kwamandla), ububanzi bekhanda lesibani, indlela yokupholisa, kanye ne-wavelength esebenzayo. Nazi izinhlobo ezivame kakhulu ezitholakala embonini yokunyathelisa: Izinhlelo zokwelapha ngesandla noma zendawo Izici: Lezi zibani zesitayela sepeni noma ezincane zikhipha phakathi kuka-3 W no-15 W, zigxile endaweni emincane yokuphulukisa okuqondile kwendawo. Zihlangene kakhulu futhi zilula kubasebenzisi ukukhomba izindawo ezithile. Izicelo: Ilungele ukulungiswa kwendawo, ukwenza ...

Njengoba ubuchwepheshe bokuphrinta be-inkjet buqhubeka nokuthuthuka, izibani zokuphulukisa ze-UV LED ziye zavela njengezingxenye ezibalulekile emisebenzini yanamuhla yokukhiqiza. Ngokuqinisa ngokushesha ama-inki nokumbozwa kwe-UV, lezi zibani zisheshisa isivinini sokuphrinta, zithuthukise ubukhali besithombe, futhi zithuthukise ukuqina komkhiqizo jikelele. Kodwa-ke, ukufeza imiphumela esezingeni eliphakeme njalo nokugcina ukusebenza kahle kwenqubo, kubalulekile ukukala njalo nokuqinisekisa ukukhishwa kwe-UV kwalezi zibani. Kulesi sihloko, sihlola izimiso eziyisisekelo ngemuva kokuphulukiswa kwe-UV LED, sichaza ukuthi kungani ukuhlolwa kokuqina okujwayelekile kubalulekile, sihlole izinto ezibalulekile ezithinta ukukhishwa kwe-UV, futhi sichaze amathuluzi nemikhuba emihle yokugcina izimo ezinhle zokuphulukisa. 1. Ukubuka konke kwe-UV LED Curing ku-Inkjet Printing 1.1 Kuyini ukwelashwa kwe-UV LED?Ukuphulukisa kwe-UV LED kuhlanganisa ukukhanya kwe-ultraviolet okukhishwa ngama-diode akhethekile okukhipha ukukhanya (ama-LED) ukudala ukusabela okusheshayo kwe-photochemical ngaphakathi kwama-inki azwela i-UV nokugqoka. Lezi zakhiwo ziqukethe ama-photoinitiators amunca ama-wavelengths e-UV-A (imvamisa kuma-365 nm, 385 nm, 395 nm, noma ama-405 nm bands) futhi akhiqize ama-radicals wamahhala lapho echayeka. Ama-radicals wamahhala, nawo, aqala i-polymerization kanye ne-crosslinking, eguqula inkinobho esekwe kuketshezi ibe yifilimu eqinile, ephulukisiwe ngokuphelele nge-millisecond noma imizuzwana. 1.2 Kungani Ukuphrinta kwe-Inkjet Kuncike kubuchwepheshebe-UV LED Kuzicelo ze-inkjet-ezisukela kwizimpawu zezohwebo nokupakisha ukukhiqizwa kwelebula nokuphrinta kwendwangu-ikhono lokuphulukisa inkinobho ngokushesha lapho kufakwa inikeza izinzuzo eziningana ezibalulekile: 2. Kungani ukuhlolwa okujwayelekile kwe-UV Intensity Kubalulekile Yize izibani zokuphulukisa ze-UV LED zidume ngokuphila kwazo ...