Ukuxazulula Izinkinga Zokuphulukisa I-UV LED ye-Inkjet: Ukulungiswa Okujwayelekile

Ukuxazulula izinkinga ze-UV LED zokuphrinta kwe-inkjet ngokuyinhloko kuhilela ukwandisa ibhalansi phakathi kokukhanya kwe-UV (ukukhanya ukukhanya) kanye nomthamo (isikhathi sokuchayeka). Uma inkinobho yakho ingakomi noma inamathele kahle, ukulungiswa okuvame kakhulu kufaka phakathi ukwandisa ukukhishwa kwamandla e-LED, ukunciphisa ijubane lokuhambisa noma inqola ukwandisa isikhathi sokuhlala, nokuqinisekisa ukuthi ubude bakho be-LED (imvamisa i-395nm noma i-385nm) ifana nama-photoinitiators kusethi yakho ethize yeyinki. Ukugcinwa njalo, njengokuhlanza amafasitela engilazi ye-quartz emakhanda esibani ukususa inkungu ye-inki, nakho kubalulekile ekugcineni amandla okuphulukisa angaguquguquki.

Ukukhubazeka okujwayelekile kwe-UV Inkjet Ukwelapha Izimbangela Zazo

Ngaphambi kokulungisa izilungiselelo zomshini, kubalulekile ukucacisa ukuthi ukwelashwa kwehluleka kanjani. Izinkinga zokuphulukisa zivame ukuvezwa ngezindlela ezimbili: i-tackiness ebusweni (ukuphulukisa okungaphansi) noma ukunamathela okungalungile (i-delamination).

Ukuqonda isayensi ngemuva kwale nqubo kusiza ekutholeni imbangela yembangela yalesi simo. Ukuze uthole ukujula okujulile ekuphenduleni kwamakhemikhali, ungafunda Indlela yokuphulukisa i-UV LED isebenza kanjani ekunyatheliseni kwe-inkjet.

Surface Tackiness (The "Wet" Feeling)

Uma ukuphrinta kuzwakala kunamathele noma kugcwala lapho kuthintwa ngokushesha ngemuva kokuphrinta, inkinobho ayizange i-polymerized ngokuphelele. Lokhu kuvame ukuba yinkinga yokuvinjelwa kwe-oksijini, lapho i-oksijini emoyeni ivimbela ukusabela kokuphulukisa ungqimba olungaphezulu.

• Ukulungisa: Ukwandisa i-UV peak irradiance (ukuqina).
• Ulungisa: Hlola ukuthi ukuphakama kwesibani se-LED kukude kakhulu ne-substrate; ukuqina kwehla kakhulu ngebanga.

Through-Cure Failure (Adhesion Issues)

Uma ubuso bomile kepha inki iphuma noma iklwebha kalula, ukukhanya kwe-UV akuzange kungene ezansi kwesendlalelo sikayinki. Lokhu kungukwehluleka "kokwelapha".

• Ulungisa: Nciphisa ijubane lokuphrinta ukwandisa umthamo ophelele we-UV (ukuminyana kwamandla).
• Ulungisa: Qinisekisa ukuthi usebenzisa ubude obufanele bezidingo zokuphulukisa ukujula kwe-inki yakho.

Ukuze uthole umhlahlandlela ophelele wokuqonda izinto eziyisisekelo, hlola ukubuka konke kwethu ku UV LED Ink Curing.

Kungani inkinobho yami ye-UV ihlaba noma ihlala i-tacky?

Uma inkinobho yakho ye-UV igcoba, imvamisa kusho ukuthi izibani azilethi amandla anele ukunqoba ukuvinjelwa kwe-oksijini ebusweni, noma ijubane lokuphrinta lishesha kakhulu.

Ukulungisa ukugcoba, qala uhlanze iwindi lesibani se-UV LED. Inkungu ye-inki (umkhiqizo ojwayelekile wokuphrinta kwe-inkjet) ingaqongelela efasiteleni le-quartz, ivimbela kuze kufike ku-20-30% wamandla e-UV. Uma ingilazi ihlanzekile, khulisa ukusethwa kwamandla e-LED ku-100%. Uma i-smearing iqhubeka, kungadingeka ukuthi unciphise ijubane lemoto.

I-Smearing nayo ingenzeka uma ungqimba lwe-inki lujiyile kakhulu. Abamnyama abacebile nemibala eminyene bavimbela ukukhanya kwe-UV ukuthi kungangeni ngaphakathi. Ungafunda amasu anemininingwane ethe xaxa kumhlahlandlela wethu: Indlela Yokuvimbela I-UV Ink Smearing Ngokuphulukisa Okufanele kwe-LED.

Ngiyilungisa kanjani ukunamathela kweyinki empofu kuma-substrates anzima?

Ukunamathela okungalungile kuvame ukuphazamiseka ngokuphulukiswa okungalungile, kepha kuvame ukuba yinkinga yokungezwani komhlaba. Uma amandla ebusweni be-substrate (izinga le-dyne) liphansi kunokungezwani kobuso beyinki, inki ngeke ihlanganise, kungakhathalekile ukuthi uqhuma kangakanani ukukhanya kwe-UV.

Izinyathelo zokuthuthukisa ukunamathela:

1. Hlanza i-substrate: Susa uwoyela noma uthuli nge-isopropyl alcohol.
2. Ukwelashwa kwangaphambili: Sebenzisa i-primer noma ukwelashwa kwelangabi ukukhulisa amandla angaphezulu.
3. Lungisa ukubambezeleka kokuphulukisa: Kwesinye isikhathi, ukuvumela inki ukuthi "imanzi" (ukugeleza) ingxenyana yomzuzwana ngaphambi kokuphulukisa kungathuthukisa isibopho.

Ukuze uthole izilungiselelo ezithile zomshini ezisiza ukuthi inki ilume ezintweni ezibonakalayo, funda Indlela Yokuthuthukisa Ukunamathela Kwe-UV Ink Ngezilungiselelo Zokuphulukisa ze-LED.

Ukucatshangelwa kwe-Hardware: Ama-Wavelengths kanye nokukhethwa kwesibani

Akuwona wonke amalambu e-UV LED ahambisana nawo wonke ama-inki. Isici esibaluleke kakhulu se-hardware ukufanisa ubude be-wavelength.

Wavelength Mismatch

Izibani ze-UV LED zikhipha amabhande amancane okukhanya, ngokuvamile afinyelela ku-365nm, 385nm, noma 395nm. Uma inkinobho yakho yakhelwe ukusabela ku-395nm kepha usebenzisa isibani esingu-365nm, ama-photoinitiators kungenzeka angavumeli kahle.

• I-395nm: Indinganiso yomkhakha yokuphulukisa ama-inkjet inks ajwayelekile; inikeza ukuphulukiswa okuhle.
• I-365nm: Kungcono ukuphulukisa ubuso nokunqoba ukuvinjelwa kwe-oksijini, okuvame ukusetshenziswa ku-varnish.

Uma ungaqiniseki ukuthi yikuphi ukucaciswa okuhambisana nezidingo zakho zokukhiqiza, buyekeza Yibuphi ubude be-wavelength obungcono kakhulu ekwelapheni inkinobho ye-UV?.

Lamp Intensity and Degradation

Ngenkathi ama-LED ehlala isikhathi eside kunezibani ze-mercury, anganciphisa noma ashise ngokweqile. Uma uhlelo lwakho lokupholisa (umoya noma amanzi) luhluleka, izinga lokushisa le-LED chip junction lizokhuphuka, kubangele ukukhishwa kwe-UV kwehle. Uma usola ukuthi i-hardware yakho iyibhodlela, hlola ukuhlaziywa kwethu ku- Yikuphi ukuphulukiswa kwe-UV LED okulungile ukuphrinta kwe-inkjet?.

Troubleshooting Matrix: Defect vs. Solution

Sebenzisa leli thebula ukuxilonga ngokushesha izinkinga zakho zokuphrinta.

Imibuzo Evame Ukubuzwa

Ingabe ijubane lokuphrinta lingathinta ukwelashwa kwe-UV?

Yebo, impela. Ijubane lokuphrinta linquma "umthamo" noma inani eliphelele lamandla i-inki etholakalayo. Ukuhambisa i-substrate ngokushesha kakhulu kunciphisa isikhathi sokuchayeka, okungaholela ekuphulukisweni okungalungile. Ukunciphisa ijubane lomugqa kuyindlela elula yokwandisa umthamo we-UV.

Ngazi kanjani ukuthi isibani sami se-UV sisebenza kahle?

Awukwazi ukwahlulela ukukhishwa kwe-UV ngeso lenyama. Kufanele usebenzise i-radiometer (imitha yokukhanya ye-UV) elinganiswe ngokukhethekile kuma-wavelengths e-LED ukukala ukukhanya ($W / cm ^ 2 $) kanye nokuminyana kwamandla ($J / cm ^ 2 $). Ukwehla kwalezi zifundo kukhombisa isidingo sokulondoloza.

Kungani inkinobho yami emhlophe ingaphulukisi ngenkathi imibala ilungile?

I-inki emhlophe iqukethe i-Titanium Dioxide ($TiO_2 $), i-pigment esindayo ekhombisa futhi isakazele ukukhanya kwe-UV. Kunzima kakhulu ukwelapha ngoba ukukhanya kulwela ukungena ungqimba olungabonakali. Imvamisa udinga amandla aphezulu noma isivinini esihamba kancane sikayinki omhlophe uma kuqhathaniswa ne-CMYK.

Ingabe ukwelashwa kwe-UV LED kuphephile?

Ukuphulukiswa kwe-UV LED kuphephile kunokuphulukiswa kwe-mercury arc ngoba akukhiqizi i-ozone futhi kuqeda ubungozi bokuchitheka kwe-mercury. Kodwa-ke, ukuchayeka okuqondile ekukhanyeni kwe-UV kuyingozi esikhunjeni nasemehlweni. Njalo gqoka izibuko zokuphepha ezivimbela i-UV futhi umboze isikhumba esiveziwe lapho usebenza noma ukuxazulula imishini.

Key Takeaways

• Ukuhlanzeka kuyinkosi: Iwindi le-quartz elingcolile esibani sakho se-LED yimbangela ye- # 1 yezinkinga zokuphulukisa okungazelelwe.
• Yazi inki yakho: Qinisekisa ukuthi ubude bakho be-LED (isb., 395nm) buhambisana nokwakhiwa kweyinki yakho.
• Umthamo vs. Irradiance: Ukwandisa amandla (irradiance) ukulungisa tackiness ebusweni; Nciphisa ijubane (ukwandisa umthamo) ukulungisa ukunamathela / peeling.
• Phatha ukushisa: Ngenkathi "kupholile," ama-LED e-UV asakhiqiza ukushisa; qinisekisa ukuthi uhlelo lwakho lokupholisa lusebenza ukuvimbela ukwehla kwamandla.

Isiphetho

Ukuxazulula izinkinga ze-UV LED zokuphulukisa i-inkjet akudingeki kube ngumdlalo wokuqagela. Ngokuhlola ngokuhlelekile amazinga akho we-irradiance, isivinini sokuphrinta, nezimo ze-substrate, ungaqeda izinkinga zokugcwala nokuqhuma. Qala ngokuhlanza amakhanda akho wesibani futhi uqinisekise ukuhambisana kwakho kweyinki, bese ulungisa izilungiselelo zakho zamandla ukuthola indawo emnandi yezinto zakho ezithile.