1 Ubume bangaphakathi bomshicileli welaser
Ulwakhiwo lwangaphakathi lomshicileli we-laser luquka iinxalenye ezine ezinkulu, njengoko kubonisiwe kuMfanekiso 2-13.
Umzobo 2-13 Ulwakhiwo lwangaphakathi lomshicileli welaser
(1) IYunithi yeLaser: ikhupha umqadi welaser ngolwazi olubhaliweyo ukuveza igubu elibonisa ukukhanya.
(2) Iyunithi yokutya kwePhepha: lawula iphepha ukuze ufake umshicileli ngexesha elifanelekileyo kwaye uphume kumshicileli.
(3) IYunithi yokuphuhlisa: Gubungela indawo evulekileyo ye-photosensitive drum nge-toner ukwenza umfanekiso onokuthi ubonwe ngeso lenyama, kwaye uyidlulisele kumphezulu wephepha.
(4) Iyunithi yokulungisa: I-toner egubungela umphezulu wephepha iyancibilika kwaye igxininiswe ngokuqinileyo kwiphepha usebenzisa uxinzelelo kunye nokufudumala.
2 Umgaqo osebenzayo weprinta yelaser
Umshicileli welaser sisixhobo esiphumayo esidibanisa itekhnoloji yokuskena i-laser kunye ne-electronic imaging technology. Abashicileli beLaser banemisebenzi eyahlukeneyo ngenxa yeemodeli ezahlukeneyo, kodwa ulandelelwano lokusebenza kunye nomgaqo ziyafana.
Ukuthatha abashicileli belaser be-HP abaqhelekileyo njengomzekelo, ulandelelwano lokusebenza lulandelayo.
(1)Xa umsebenzisi ethumela umyalelo woshicilelo kumshicileli ngenkqubo yokusebenza yekhompyutha, ulwazi lomzobo oluza kushicilelwa luqale luguqulelwe kwingcaciso yokubini ngomqhubi womshicileli kwaye ekugqibeleni luthunyelwe kwibhodi yolawulo engundoqo.
(2)Ibhodi yolawulo ephambili ifumana kwaye itolike ulwazi lwebinary oluthunyelwe ngumqhubi, luhlengahlengise kwi-laser beam, kwaye lulawula inxalenye yelaser ukuba ikhuphe ukukhanya ngokwale ngcaciso. Ngexesha elifanayo, umphezulu wedrum ye-photosensitive ihlawuliswa isixhobo sokushaja. Ke umqa welaser onolwazi lwegraphic uveliswa yinxalenye yokuskena kwelaser ukuveza igubu lephotosensitive. Umfanekiso ofihlakeleyo we-electrostatic wenziwa kumphezulu wegubu letoner emva kokuba sesichengeni.
(3)Emva kokuba i-cartridge ye-toner idibene nenkqubo yokuphuhlisa, umfanekiso ofihliweyo uba yimizobo ebonakalayo. Xa udlula kwinkqubo yokudlulisa, i-toner idluliselwa kwiphepha phantsi kwesenzo sentsimi yombane yesixhobo sokudlulisa.
(4)Emva kokuba ukuhanjiswa kugqityiwe, iphepha lidibanisa i-sawtooth yokucima umbane kwaye ikhuphe intlawulo kwiphepha emhlabeni. Ekugqibeleni, ingena kwinkqubo yokulungisa ukushisa okuphezulu, kunye nemizobo kunye nombhalo owenziwe yi-toner uhlanganiswe kwiphepha.
(5)Emva kokuba ulwazi lwegraphic luprintwe, isixhobo sokucoca sisusa itoner engagqithiselwanga kwaye singene kumjikelo olandelayo wokusebenza.
Zonke ezi nkqubo zokusebenza zingentla kufuneka zidlule kumanyathelo asixhenxe: ukutshaja, ukuvezwa, uphuhliso, ukudluliselwa, ukupheliswa kwamandla, ukulungiswa kunye nokucoca.
1>. Ukuhlawulisa
Ukwenza igubu lefotosensitive lifunxa itoner ngokolwazi lwegraphic, igubu elifotosensitive kufuneka lihlawulwe kuqala.
Ngoku kukho iindlela ezimbini zokutshaja zabashicileli kwimarike, enye iyatshaja i-corona kwaye enye itshaja i-roller yokutshaja, zombini zineempawu zazo.
Ukutshaja i-Corona yindlela yokutshaja engathanga ngqo esebenzisa i-conductive substrate ye-photosensitive drum njenge-electrode, kunye nocingo olubhityileyo kakhulu lwentsimbi lubekwe kufutshane negubu le-photosensitive njengenye i-electrode. Xa ukopisha okanye uprinta, i-voltage ephezulu kakhulu isetyenziswe kwintambo, kwaye indawo ejikeleze ucingo yenze intsimi yombane enamandla. Ngaphantsi kwesenzo sommandla wombane, ii-ion ezine-polarity efanayo ne-corona wire flow to the surface of the drum photosensitive. Ekubeni i-photoreceptor ebusweni bombhobho we-photosensitive inokumelana okuphezulu ebumnyameni, intlawulo ayiyi kuhamba, ngoko ke amandla omhlaba we-photosensitive idrum iya kuqhubeka nokunyuka. Xa amandla anyuka ukuya kweyona ndlela iphakamileyo yokwamkelwa, inkqubo yokutshaja iyaphela. Ukungalungi kwale ndlela yokutshaja kukuba kulula ukuvelisa i-radiation kunye ne-ozone.
Ukutshaja i-roller yokutshaja yindlela yokutshaja yomfowunelwa, engadingi amandla ombane aphezulu wokutshaja kwaye ihambelana nokusingqongileyo. Ke ngoko, uninzi lwabashicileli belaser basebenzisa iirola zokutshaja ukuhlawula.
Masithathe ukutshaja kwerola yokutshaja njengomzekelo ukuqonda yonke inkqubo yokusebenza yomshicileli welaser.
Okokuqala, i-high-voltage circuit circuit ivelisa i-voltage ephezulu, ehlawulisa umphezulu we-photosensitive drum kunye nombane ongekho ngokufanayo ngokusebenzisa icandelo lokutshaja. Emva kokuba i-photosensitive idrum kunye ne-roller yokutshaja ijikeleza ngokuhambelanayo kumjikelo omnye, yonke indawo yesigubhu se-photosensitive ihlawuliswa ngentlawulo engafanelekanga efanayo, njengoko kubonisiwe kuMfanekiso 2-14.
Umfanekiso 2-14 Umzobo weSchematic wokutshaja
2>. ukungakhuseleki
I-exposure yenziwa malunga nedrum ye-photosensitive, evezwe nge-laser beam. Umphezulu wegubu le-photosensitive ngumaleko we-photosensitive, umaleko we-photosensitive ugubungela umphezulu we-aluminium alloy conductor, kwaye i-aluminium alloy conductor isekelwe.
Umaleko we-photosensitive yimathiriyeli ye-photosensitive, ebonakala ngokuba yi-conductive xa ibonakaliswe ekukhanyeni kunye ne-insulating ngaphambi kokuvezwa. Ngaphambi kokuvezwa, intlawulo yeyunifomu ihlawuliswa ngesixhobo sokutshaja, kwaye indawo ene-radiated emva kokuhlanjululwa yi-laser iya kukhawuleza ibe ngumqhubi kwaye iqhube kunye nomqhubi we-aluminium alloy, ngoko ke intlawulo ikhutshwa emhlabeni ukuze yenze indawo yesicatshulwa. iphepha lokushicilela. Indawo engakhanyiswa yilaser isagcina intlawulo yokuqala, yenza indawo engenanto kwiphepha lokushicilela. Kuba lo mfanekiso womlinganiswa ungabonakali, ubizwa ngokuba ngumfanekiso we-electrostatic latent.
Isivamvo sophawu lwe-synchronous sikwafakwe kwi-scanner. Umsebenzi wale sensor kukuqinisekisa ukuba umgama wokuskena uhambelana ukwenzela ukuba i-laser beam irradiated phezu kombhobho we-photosensitive inokufikelela kwisiphumo esihle sokucinga.
Isibane selaser sikhupha isibane selaser esinolwazi lomlinganiswa, olukhanya kwiprism ejikelezayo enamacala amaninzi, kwaye iprism ebonakalisayo ibonakalisa umqadi welaser kumphezulu wegubu lephotosensitive ngeqela lelens, ngaloo ndlela iskena igubu lephotosensitive ngokuthe tye. Eyona moto iphambili iqhuba igubu lefotosensitive ukuba lijikeleze ngokuqhubekayo ukuze liqonde ukuskena okuthe nkqo kwegubu lephotosensitive ngesibane esikhupha i-laser. Umgaqo wokuvezwa uboniswa kuMfanekiso 2-15.
Umfanekiso 2-15 Umzobo wesicwangciso sokutyhileka
3>. uphuhliso
Uphuhliso yinkqubo yokusebenzisa umgaqo wokunyanyeka kwabantu besini esinye kunye nomtsalane wesini esahlukileyo kwiintlawulo zombane ukuguqula umfanekiso ofihlakeleyo we-electrostatic ungabonakali ngeso lenyama ube yimizobo ebonakalayo. Kukho isixhobo semagnethi esembindini werola umazibuthe (ekwabizwa ngokuba yi-magnetic roller, okanye imagnethi ngokufutshane), kunye netoner emgqomeni womgubo iqulethe izinto ezinozibuthe ezinokufunxwa yimagnethi, ngoko ke itoner kufuneka itsalwe. ngemagnethi esembindini werola ephuhlayo umazibuthe.
Xa idrum ye-photosensitive ijikeleza kwindawo apho idibana khona ne-roller magnetic ephuhlisayo, inxalenye yobuso bombhobho we-photosensitive ongakhange ukhutshwe yi-laser une-polarity efanayo ne-toner, kwaye ayiyi kubamba i-toner; ngelixa inxalenye ehlanjululwa yi-laser ine-polarity efanayo ne-toner Ngokuphambene noko, ngokomgaqo wokugxotha kunye nesini esahlukileyo kunye nokukhangayo, i-toner ifunxeka phezu komgqomo we-photosensitive apho i-laser i-irradiated. , kwaye emva koko imizobo yetoner ebonakalayo yenziwe phezulu, njengoko kubonisiwe kuMfanekiso 2-16.
Umzobo 2-16 umzobo womgaqo wophuhliso
4>. ugqithiselo loshicilelo
Xa i-toner idluliselwa kwindawo ekufutshane nephepha lokushicilela kunye ne-drum ye-photosensitive, kukho isixhobo sokudlulisa ngasemva kwephepha ukuze sisebenzise ukuhanjiswa koxinzelelo oluphezulu emva kwephepha. Ngenxa yokuba i-voltage yesixhobo sokudlulisa iphezulu kunombane wendawo yokuvezwa yedrum ye-photosensitive, imizobo, kunye nombhalo owenziwe yi-toner ukhutshelwa kwiphepha lokuprinta phantsi kwesenzo sommandla wombane wesixhobo sokutshaja, njengoko kubonisiwe. kuMfanekiso 2-17. Imizobo kunye nokubhaliweyo kubonakala kumphezulu wephepha lokushicilela, njengoko kubonisiwe kuMfanekiso 2-18.
Umzobo 2-17 umzobo ocwangcisiweyo wogqithiselo loshicilelo (1)
Umzobo 2-18 umzobo weSkimu sokutshintshela ushicilelo (2)
5>. Uchithe umbane
Xa umfanekiso we-toner udluliselwa kwiphepha lokushicilela, i-toner igubungela kuphela umphezulu wephepha, kwaye isakhiwo somfanekiso esakhiwe yi-toner sichithwa ngokulula ngexesha lokuhambisa iphepha lokushicilela. Ukuqinisekisa ukunyaniseka komfanekiso we-toner ngaphambi kokulungiswa, emva kokudluliselwa, kuya kudlula kwisixhobo sokuphelisa i-static. Umsebenzi walo kukuphelisa i-polarity, ukuphazamisa zonke iintlawulo kunye nokwenza iphepha lingathathi hlangothi ukwenzela ukuba iphepha likwazi ukungena kwiyunithi yokulungisa kakuhle kwaye uqinisekise ukushicilelwa kokuphuma Umgangatho wemveliso, uboniswe kuMfanekiso 2-19.
Umzobo 2-19 Umzobo weSchematic wokupheliswa kwamandla
6>. ukulungisa
Ukufudumeza kunye nokulungiswa yinkqubo yokufaka uxinzelelo kunye nokufudumeza kumfanekiso we-toner adsorbed kwiphepha lokushicilela ukunyibilikisa i-toner kunye nokucwiliswa kwiphepha lokushicilela ukwenza umzobo oqinileyo phezu kwephepha.
Inxalenye ephambili ye-toner i-resin, i-melting point of toner i malunga ne-100 ° C, kwaye ukushisa kwe-roller yokufudumala kweyunithi yokulungisa malunga ne-180 ° C.
Ngexesha lenkqubo yoshicilelo, xa ubushushu befuser bufikelela kubushushu obumiselweyo malunga ne-180°C xa iphepha elifunxa itoni lidlula kwisithuba esiphakathi kwerola yokufudumeza (ekwaziwa ngokuba yirola ephezulu) kunye nerola yoxinzelelo lwerabha (eyaziwa nangokuthi njengoko i-roller ephantsi yoxinzelelo, i-roller ephantsi), inkqubo yokudibanisa iya kugqitywa. Iqondo lokushisa eliphezulu elivelisiweyo litshisa i-toner, enyibilikisa i-toner kwiphepha, ngaloo ndlela yenza umfanekiso oqinileyo kunye nesicatshulwa, njengoko kuboniswe kuMfanekiso 2-20.
Umzobo 2-20 Umzobo womgaqo wokulungisa
Ngenxa yokuba ubuso be-roller yokufudumala bufakwe ngengubo engabilula ukunamathela kwi-toner, i-toner ayiyi kubambelela ebusweni be-roller yokufudumala ngenxa yokushisa okuphezulu. Emva kokulungiswa, iphepha lokushicilela lihlukaniswe kwi-roller yokufudumala nge-claw yokwahlula kwaye ithunyelwe ngaphandle komshicileli ngokusebenzisa i-roller feed paper.
7>. icocekile
Inkqubo yokucoca kukukrazula i-toner kwi-drum ye-photosensitive engazange idluliselwe ukusuka kumphezulu wephepha kwi-bin toner bin.
Ngethuba lenkqubo yokudlulisa, umfanekiso we-toner kwi-drum ye-photosensitive ayikwazi ukudluliselwa ngokupheleleyo kwiphepha. Ukuba ayicocwanga, i-toner eseleyo phezu komphezulu we-photosensitive drum iya kuqhutyelwa kumjikelo olandelayo wokushicilela, ukutshabalalisa umfanekiso osanda kuveliswa. , ngokwenza njalo ichaphazela umgangatho woshicilelo.
Inkqubo yokucoca yenziwa yi-rubber scraper, umsebenzi wayo kukucoca idrum ye-photosensitive phambi komjikelezo olandelayo we-photosensitive drum printing. Ngenxa yokuba i-blade ye-rubber yokucoca i-scraper inxiba-resistant kwaye iguquguqukayo, i-blade yenza i-angle yokusika kunye nomphezulu we-drum photosensitive. Xa igubu le-photosensitive lijikeleza, i-toner phezu komhlaba ikhutshwe kwi-scraper yenkunkuma, njengoko kubonisiwe kwi-Figure 2-21.
Ixesha lokuposa: Feb-20-2023