1 Isakhiwo sangaphakathi sephrinta ye-laser
Isakhiwo sangaphakathi sephrinta ye-laser siqukethe izingxenye ezine ezinkulu, njengoba kuboniswe kuMfanekiso 2-13.
Umfanekiso 2-13 Isakhiwo sangaphakathi sephrinta ye-laser
(1) Iyunithi ye-Laser: ikhipha i-laser beam enolwazi lombhalo ukuze iveze isigubhu se-photosensitive.
(2) Iyunithi Yokuphakelwa Kwamaphepha: lawula iphepha ukuze ufake iphrinta ngesikhathi esifanele bese uphuma kuphrinta.
(3) Iyunithi Yokuthuthukisa: Mboza ingxenye esobala yesigubhu esizwela ukukhanya nge-toner ukuze wenze isithombe esingabonwa ngeso lenyama, bese usidlulisela ebusweni bephepha.
(4) Iyunithi yokulungisa: I-toner emboze ubuso bephepha iyancibilika futhi iqiniswe ngokuqinile ephepheni kusetshenziswa ingcindezi nokushisa.
2 Umgomo wokusebenza wephrinta ye-laser
Iphrinta ye-laser iyisisetshenziswa esikhiphayo esihlanganisa ubuchwepheshe bokuskena nge-laser nobuchwepheshe be-imaging kagesi. Amaphrinta e-Laser anemisebenzi ehlukene ngenxa yamamodeli ahlukene, kodwa ukulandelana kokusebenza nomgomo kuyafana.
Ukuthatha amaphrinta we-laser we-HP ajwayelekile njengesibonelo, ukulandelana kokusebenza kungokulandelayo.
(1) Uma umsebenzisi ethumela umyalo wokuphrinta kuphrinta ngohlelo lokusebenza lwekhompuyutha, ulwazi lwesithombe oluzophrintwa luqala luguqulelwe lube ulwazi kanambambili ngomshayeli wephrinta, futhi ekugcineni luthunyelwe ebhodini eliyinhloko lokulawula.
(2) Ibhodi eliyinhloko lokulawula lithola futhi lihumushe ukwaziswa kanambambili okuthunyelwa umshayeli, likulungise ukuze lihambisane ne-laser beam, futhi lilawula ingxenye ye-laser ukuze ikhiphe ukukhanya ngokwalolu lwazi. Ngesikhathi esifanayo, ingaphezulu lesigubhu se-photosensitive sishajwa idivayisi yokushaja. Bese i-laser beam enolwazi oluyingcaca ikhiqizwa yingxenye yokuskena nge-laser ukuze kuvezwe isigubhu se-photosensitive. Isithombe esifihlekile se-electrostatic senziwa endaweni yesigubhu se-toner ngemva kokuchayeka.
(3) Ngemuva kokuthi i-cartridge ye-toner ixhumene nesistimu esathuthuka, isithombe esifihlekile siba yimifanekiso ebonakalayo. Lapho udlula ohlelweni lokudlulisa, i-toner idluliselwa ephepheni ngaphansi kwesenzo senkambu kagesi yedivayisi yokudlulisa.
(4) Ngemva kokuqedwa kokudluliselwa, iphepha lithinta i-sawtooth elahla ugesi, futhi likhiphe ukushaja ephepheni phansi. Ekugcineni, ingena ohlelweni lokulungisa izinga lokushisa eliphezulu, futhi ihluzo nombhalo owenziwe yi-toner kuhlanganiswa ephepheni.
(5) Ngemva kokuba imininingwane yesithombe isiphrintiwe, idivayisi yokuhlanza ikhipha i-toner engadluliswanga, bese ingena emjikelezweni olandelayo wokusebenza.
Zonke izinqubo zokusebenza ezingenhla zidinga ukudlula ezinyathelweni eziyisikhombisa: ukushaja, ukuchayeka, ukuthuthukiswa, ukudluliswa, ukuqedwa kwamandla, ukulungisa, nokuhlanza.
1>. Shaja
Ukuze wenze isigubhu se-photosensitive simunce i-toner ngokuya ngolwazi oluyingcaca, isigubhu se-photosensitive kufanele sishajwe kuqala.
Njengamanje kunezindlela ezimbili zokushaja zamaphrinta emakethe, eyodwa ukushaja i-corona kanti enye ishaja ukushaja kwama-roller, womabili anezici zawo.
Ukushaja i-Corona kuyindlela yokushaja engaqondile esebenzisa i-conductive substrate yesigubhu se-photosensitive njenge-electrode, futhi ucingo lwensimbi oluncane kakhulu lubekwe eduze kwesigubhu esithatha izithombe njengenye i-electrode. Lapho ukopisha noma uphrinta, i-voltage ephezulu kakhulu isetshenziswa ocingweni, futhi isikhala esizungeze ucingo sakha insimu kagesi enamandla. Ngaphansi kwesenzo senkundla kagesi, ama-ion ane-polarity efanayo nokugeleza kwentambo ye-corona ebusweni besigubhu se-photosensitive. Njengoba i-photoreceptor engaphezulu kwesigubhu se-photosensitive inokumelana okuphezulu ebumnyameni, ukushaja ngeke kugeleze, ngakho amandla angaphezulu wesigubhu esizwelayo azoqhubeka nokukhuphuka. Lapho amandla ekhuphukela emandleni aphezulu kakhulu okwamukelwa, inqubo yokushaja iyaphela. Ububi bale ndlela yokushaja ukuthi kulula ukukhiqiza imisebe ne-ozone.
Ukushaja i-roller yokushaja kuyindlela yokushaja othintana naye, engadingi i-voltage yokushaja ephezulu futhi enobungani bemvelo. Ngakho-ke, amaphrinta amaningi e-laser asebenzisa ama-roller wokushaja ukushaja.
Ake sithathe ukushaja kwerola yokushaja njengesibonelo ukuze siqonde yonke inqubo yokusebenza yephrinta ye-laser.
Okokuqala, ingxenye yesekethe ye-high-voltage ikhiqiza amandla kagesi aphezulu, ashaja ingaphezulu lesigubhu se-photosensitive ngogesi ongekho emthethweni ofanayo ngengxenye yokushaja. Ngemuva kokuthi isigubhu esizwela isithombe kanye nerola eshajayo izungezise ngokuhambisanayo umjikelezo owodwa, yonke indawo yesigubhu ezwelayo ishajwa ngokushaja okungeyikho okufanayo, njengoba kuboniswe kuMfanekiso 2-14.
Umfanekiso 2-14 Umdwebo wohlelo lokushaja
2>. ukuchayeka
Ukuchayeka kwenziwa eduze kwesigubhu se-photosensitive, esivezwa nge-laser beam. Ingaphezulu lesigubhu se-photosensitive ungqimba oluzwela izithombe, isendlalelo se-photosensitive simboza ingaphezulu le-aluminium alloy conductor, futhi i-aluminium alloy conductor isekelwe phansi.
Isendlalelo se-photosensitive siyinto ethinta i-photosensitive, ebonakala ngokuba ne-conductive lapho ivezwa ekukhanyeni, kanye nokuvikela ngaphambi kokuchayeka. Ngaphambi kokuchayeka, ukushaja komfaniswano kushajwa idivayisi yokushaja, futhi indawo ekhanyiswe imisebe ngemva kokushiswa yi-laser izoshesha ibe umqhubi futhi iqhube nge-aluminium alloy conductor, ngakho-ke inkokhiso idedelwa phansi ukuze yakhe indawo yombhalo iphepha lokunyathelisa. Indawo engakhanyiswanga yi-laser isagcina ukushajwa kwasekuqaleni, yenza indawo engenalutho ephepheni lokuphrinta. Njengoba lesi sithombe somlingisi singabonakali, sibizwa ngokuthi isithombe esifihlekile se-electrostatic.
Inzwa yesiginali ehambisanayo nayo ifakiwe kusikena. Umsebenzi wale nzwa uwukuqinisekisa ukuthi ibanga lokuskena liyahambisana ukuze i-laser beam ekhanyiswe phezu kwesigubhu esine-photosensitive ikwazi ukufeza umphumela omuhle kakhulu wokucabanga.
Isibani se-laser sikhipha umsebe we-laser onolwazi lomlingiswa, okhanya kuprism ephendukayo enezinhlangothi eziningi, futhi i-prism ekhanyayo ikhombisa ugongolo lwe-laser ebusweni besigubhu se-photosensitive ngokusebenzisa iqembu le-lens, ngaleyo ndlela iskena isigubhu se-photosensitive sivundlile. Injini eyinhloko ishayela isigubhu se-photosensitive ukuthi sijikeleze ukuze sibone ukuskena okuqondile kwesigubhu esizwelayo ngesibani esikhipha i-laser. Umgomo wokuchayeka ukhonjiswe kuMfanekiso 2-15.
Umfanekiso 2-15 Umdwebo wohlelo lokuchayeka
3>. ukuthuthukiswa
Ukuthuthukiswa kuyinqubo yokusebenzisa umgomo wokwenyanya abobulili obufanayo kanye nokukhangwa kwabobulili obuhlukile kwamashaji kagesi ukuze uguqule isithombe esifihlekile se-electrostatic singabonakali ngeso lenyama sibe yizithombe ezibonakalayo. Kukhona idivayisi kazibuthe enkabeni yerola kazibuthe (ebuye ibizwe ngokuthi ukuthuthukisa i-magnetic roller, noma i-magnetic roller ngamafuphi), futhi i-toner emgqonyeni oyimpushana iqukethe izinto kazibuthe ezingamuncwa uzibuthe, ngakho-ke i-toner kufanele ihehe. ngozibuthe phakathi nendawo yerola kazibuthe ekhulayo.
Lapho isigubhu se-photosensitive sizungeza siye endaweni lapho sithintana khona nerola kazibuthe ekhulayo, ingxenye yobuso besigubhu esine-photosensitive engakhanyiswa yi-laser iba ne-polarity efanayo ne-toner, futhi ngeke imunce i-toner; kuyilapho ingxenye ekhanyiswa i-laser ine-polarity efanayo ne-toner Ngokuphambene nalokho, ngokomgomo wokuxosha abobulili obufanayo kanye nokuheha abobulili obuhlukile, i-toner imuncwa phezu kwesigubhu se-photosensitive lapho i-laser ikhishwa khona imisebe. , bese kwakheka imidwebo ye-toner ebusweni, njengoba kuboniswe kuMfanekiso 2-16.
Umfanekiso 2-16 Umdwebo womgomo wokuthuthuka
4>. ukudlulisa ukuphrinta
Uma i-toner idluliselwa eduze kwephepha lokuphrinta ngesigubhu esine-photosensitive, kukhona idivayisi yokudlulisa ngemuva kwephepha ukuze kufakwe ukudluliselwa kokucindezela okuphezulu ngemuva kwephepha. Ngenxa yokuthi i-voltage yedivayisi yokudlulisa iphakeme kune-voltage yendawo yokuchayeka yesigubhu se-photosensitive, ihluzo, nombhalo owenziwe i-toner kudluliselwa ephepheni lokuphrinta ngaphansi kwesenzo senkambu kagesi yedivayisi yokushaja, njengoba kubonisiwe. kuMfanekiso 2-17. Imidwebo nombhalo kuvela ebusweni bephepha lokuphrinta, njengoba kukhonjisiwe kuMfanekiso 2-18.
Umfanekiso 2-17 Umdwebo wohlelo lokuphrinta kokudlulisa (1)
Umfanekiso 2-18 Umdwebo wohlelo lokuphrinta kokudlulisa (2)
5>. Hlikihla ugesi
Lapho isithombe se-toner sidluliselwa ephepheni lokunyathelisa, i-toner ihlanganisa kuphela ingaphezulu lephepha, futhi isakhiwo sesithombe esakhiwe yi-toner sichithwa kalula ngesikhathi sokuhambisa iphepha lokunyathelisa. Ukuqinisekisa ubuqotho besithombe se-toner ngaphambi kokulungiswa, ngemva kokudlulisa, sizodlula kudivayisi yokususa emile. Umsebenzi wayo ukuqeda i-polarity, ukunciphisa wonke amacala futhi wenze iphepha lingathathi hlangothi ukuze iphepha lingene endaweni yokulungisa kahle futhi liqinisekise ukuphrinta okukhiphayo Ikhwalithi yomkhiqizo, iboniswe kuMfanekiso 2-19.
Umfanekiso 2-19 Umdwebo wohlelo lokuqedwa kwamandla
6>. ukulungisa
Ukushisa nokulungiswa kuyinqubo yokufaka ingcindezi nokushisa esithombeni se-toner esikhangisiwe ephepheni lokuphrinta ukuze kuncibilike i-toner bese icwiliswa ephepheni lokuphrinta ukuze kwakhiwe umfanekiso oqinile ebusweni bephepha.
Ingxenye eyinhloko ye-toner yi-resin, indawo yokuncibilika ye-toner cishe i-100°C, futhi izinga lokushisa le-roller yokushisa leyunithi yokulungisa lingaba ngu-180°C.
Ngesikhathi senqubo yokuphrinta, lapho izinga lokushisa le-fuser lifinyelela izinga lokushisa elinqunywe kusengaphambili elingaba ngu-180°C lapho iphepha elidonsa i-toner lidlula igebe phakathi kwerola yokushisisa (eyaziwa nangokuthi i-roller engenhla) kanye nerola yerabha yokucindezela (eyaziwa nangokuthi i-roller ephansi yokucindezela, i-roller ephansi), inqubo yokuhlanganisa izoqedwa. Ukushisa okuphezulu okwenziwe kushisa i-toner, encibilikisa i-toner ephepheni, ngaleyo ndlela yakha isithombe esiqinile nombhalo, njengoba kuboniswe kuMfanekiso 2-20.
Umfanekiso 2-20 Umdwebo wesimiso sokulungisa
Ngenxa yokuthi ubuso be-roller yokushisa buhlanganiswe nokugqoka okungelula ukunamathela ku-toner, i-toner ngeke ibambelele ebusweni be-roller yokushisa ngenxa yokushisa okuphezulu. Ngemuva kokulungiswa, iphepha lokuphrinta lihlukaniswa ne-roller yokushisa nge-claw yokuhlukanisa futhi lithunyelwe ngaphandle kwephrinta ngokusebenzisa i-roller feed paper.
Inqubo yokuhlanza iwukuklwebha i-toner kusigubhu se-photosensitive esingakadluliswa ukusuka phezulu kwephepha ukuya kumgqomo we-toner kadoti.
Phakathi nenqubo yokudlulisa, isithombe se-toner esigubhu se-photosensitive asikwazi ukudluliselwa ngokuphelele ephepheni. Uma ingahlanzwa, i-toner esele phezu kwesigubhu se-photosensitive izohanjiswa emjikelezweni wokuphrinta olandelayo, ibhubhise isithombe esisanda kukhiqizwa. , ngaleyo ndlela kuthinte ikhwalithi yokuphrinta.
Inqubo yokuhlanza yenziwa i-rubber scraper, umsebenzi wayo ukuhlanza isigubhu esine-photosensitive ngaphambi komjikelezo olandelayo wokuphrinta imigqomo e-photosensitive. Ngenxa yokuthi i-blade ye-rabha yokuhlanza i-scraper ayigugi futhi iyavumelana nezimo, i-blade yenza i-engeli enqunyiwe nengaphezulu lesigubhu se-photosensitive. Uma isigubhu se-photosensitive sizungeza, i-toner engaphezulu iklwejwa emgqonyeni we-toner kadoti, njengoba kukhonjisiwe kuMfanekiso 2-21 obonisiwe.
Umfanekiso 2-21 Umdwebo wohlelo lokuhlanza
Isikhathi sokuthumela: Feb-20-2023