1 Mapangidwe amkati a chosindikizira cha laser
Mapangidwe amkati a chosindikizira cha laser ali ndi magawo anayi akuluakulu, monga momwe tawonetsera pa Chithunzi 2-13.
Chithunzi 2-13 Mapangidwe amkati a chosindikizira cha laser
(1) Laser Unit: imatulutsa kuwala kwa laser yokhala ndi zidziwitso zamawu kuti iwonetse ng'oma yojambula zithunzi.
(2) Paper Feeding Unit: wongolerani pepala kuti lilowetse chosindikizira panthawi yoyenera ndikutuluka chosindikizira.
(3) Chigawo Chokulitsa: Phimbani mbali yowonekera ya ng’oma yojambula zithunzi ndi tona kuti mupange chithunzi chooneka ndi maso, ndikuchisamutsira pamwamba pa pepalalo.
(4) Chigawo Chokonzekera: Tona yomwe imaphimba pamwamba pa pepala imasungunuka ndikukhazikika pamapepala pogwiritsa ntchito mphamvu ndi kutentha.
2 Mfundo yogwiritsira ntchito chosindikizira cha laser
Chosindikizira cha laser ndi chipangizo chotulutsa chomwe chimaphatikiza ukadaulo wa laser scanning ndi ukadaulo wojambula wamagetsi. Makina osindikizira a laser ali ndi ntchito zosiyanasiyana chifukwa cha mitundu yosiyanasiyana, koma ndondomeko yogwirira ntchito ndi mfundo ndizofanana.
Kutengera osindikizira wamba a HP laser mwachitsanzo, kutsata kogwirira ntchito kuli motere.
(1) Wogwiritsa ntchito akatumiza lamulo losindikiza kwa chosindikizira kudzera pamakina ogwiritsira ntchito makompyuta, chidziwitso chazithunzi chomwe chiyenera kusindikizidwa chimasinthidwa kukhala chidziwitso cha binary kudzera pa driver wosindikiza, ndipo pamapeto pake chimatumizidwa ku board yayikulu.
(2) Gulu lalikulu loyang'anira limalandira ndikutanthauzira zidziwitso zamabina zomwe zimatumizidwa ndi dalaivala, kuzisintha ku mtengo wa laser, ndikuwongolera gawo la laser kuti litulutse kuwala molingana ndi chidziwitsochi. Panthawi imodzimodziyo, pamwamba pa ng'oma ya photosensitive imayendetsedwa ndi chipangizo cholipiritsa. Kenako mtengo wa laser wokhala ndi zidziwitso zojambulidwa umapangidwa ndi gawo la sikani la laser kuti liwonetsere ng'oma ya photosensitive. Chithunzi chobisika cha electrostatic chimapangidwa pamwamba pa ng'oma ya tona pambuyo powonekera.
(3) Pambuyo pa cartridge ya toner ikukhudzana ndi dongosolo lomwe likutukuka, chithunzi chobisika chimakhala chowonekera. Podutsa mu dongosolo losamutsa, toner imasamutsidwa ku pepala pansi pa ntchito ya magetsi a chipangizo chosinthira.
(4) Pambuyo pa kusamutsidwa, pepalalo limalumikizana ndi sawtooth yotulutsa magetsi, ndikutulutsa ndalamazo pamapepala pansi. Potsirizira pake, imalowa m'dongosolo lokonzekera kutentha kwambiri, ndipo zojambula ndi zolemba zopangidwa ndi toner zimaphatikizidwa mu pepala.
(5) Chidziwitso chazithunzi chikasindikizidwa, chipangizo chotsuka chimachotsa tona yosasunthika, ndikulowa mumayendedwe otsatirawa.
Njira zonse zomwe zili pamwambazi ziyenera kudutsa masitepe asanu ndi awiri: kulipiritsa, kuwonekera, chitukuko, kusamutsa, kuchotsa mphamvu, kukonza, ndi kuyeretsa.
1>. Limbani
Kuti ng'oma yojambula zithunzi itenge tona molingana ndi zithunzi, ng'oma ya photosensitive iyenera kuyimbidwa kaye.
Pakali pano pali njira ziwiri zolipirira osindikiza pamsika, imodzi ndi yolipiritsa ma corona pomwe ina imatchaja ma roller, onse ali ndi mawonekedwe awo.
Kucharger kwa Corona ndi njira yolipiritsa yosalunjika yomwe imagwiritsa ntchito gawo laling'ono la ng'oma yojambula zithunzi ngati ma elekitirodi, ndipo waya wachitsulo woonda kwambiri amayikidwa pafupi ndi ng'oma ya photosensitive ngati electrode ina. Pokopera kapena kusindikiza, magetsi okwera kwambiri amagwiritsidwa ntchito pa waya, ndipo malo ozungulira waya amapanga mphamvu yamagetsi yamphamvu. Pansi pakuchita kwa gawo lamagetsi, ma ion okhala ndi polarity yofanana ndi waya wa corona amayenda pamwamba pa ng'oma ya photosensitive. Popeza photoreceptor pamwamba pa ng'oma ya photosensitive imakhala ndi kukana kwakukulu mumdima, mtengowo sudzachoka, kotero kuthekera kwapamwamba kwa ng'oma ya photosensitive kudzapitirira kukwera. Pamene kuthekera kukwera mpaka kukhoza kuvomerezedwa kwambiri, njira yolipiritsa imatha. Kuipa kwa njira yolipiritsayi ndikuti ndikosavuta kupanga ma radiation ndi ozoni.
Kucharging roller kulipiritsa ndi njira yolumikizirana, yomwe simafuna voteji yothamanga kwambiri komanso ndiyogwirizana ndi chilengedwe. Chifukwa chake, osindikiza ambiri a laser amagwiritsa ntchito zodzigudubuza kuti azilipira.
Tiyeni titenge kulipiritsa kwa chodzigudubuza cholipiritsa monga chitsanzo kuti timvetsetse ntchito yonse ya chosindikizira cha laser.
Choyamba, gawo la dera la high-voltage limapanga magetsi apamwamba, omwe amawombera pamwamba pa ng'oma ya photosensitive ndi magetsi a yunifolomu amagetsi kudzera pachigawo cholipiritsa. Pambuyo pozungulira ng'oma yojambula zithunzi ndi chogudubuza cholingirira, mbali yonse ya ng'oma yojambula zithunzi imayimbidwa ndi charger yolakwika, monga momwe chithunzi 2-14 chikusonyezera.
Chithunzi 2-14 Schematic chithunzi cha kulipiritsa
2>. kukhudzika
Kuwonekera kumachitidwa mozungulira ng'oma ya photosensitive, yomwe imawululidwa ndi mtengo wa laser. Pamwamba pa ng'oma ya photosensitive ndi wosanjikiza wowoneka bwino, wosanjikiza wa zithunzi umakwirira pamwamba pa kondakitala wa aluminiyamu aloyi, ndipo kondakitala wa aluminiyumu wa alloy amakhazikika.
The photosensitive wosanjikiza ndi photosensitive zinthu, amene yodziwika ndi conductive pamene kuwala, ndi insulating pamaso pazipita. Asanawonetsedwe, chiwongolero cha yunifolomu chimayimbidwa ndi chipangizo cholipiritsa, ndipo malo owunikiridwa pambuyo powunikiridwa ndi laser adzakhala kondakitala mwachangu ndikuchita ndi aluminum alloy conductor, kotero kuti mtengowo umatulutsidwa pansi kuti upangitse gawo lolemba. pepala losindikiza. Malo osayatsidwa ndi laser amasungabe chiwongola dzanja choyambirira, ndikupanga malo opanda kanthu pamapepala osindikizira. Popeza chithunzichi sichikuwoneka, chimatchedwa chithunzi cha electrostatic latent.
Sensa yolumikizirananso imayikidwanso mu scanner. Ntchito ya sensa iyi ndikuwonetsetsa kuti mtunda wojambulira umakhala wokhazikika kotero kuti mtengo wa laser wowunikiridwa pamwamba pa ng'oma ya photosensitive ukhoza kukwaniritsa chithunzithunzi chabwino kwambiri.
Nyali ya laser imatulutsa mtengo wa laser wokhala ndi chidziwitso chamunthu, chomwe chimawala pa prism yozungulira yamitundu yambiri, ndipo prism yonyezimira imawonetsa kuwala kwa laser pamwamba pa ng'oma yojambula zithunzi kudzera pagulu la mandala, potero imayang'ana ng'oma yojambula mopingasa. Galimoto yayikulu imayendetsa ng'oma ya photosensitive kuti izungulira mosalekeza kuti izindikire kuyang'ana koyima kwa ng'oma ya photosensitive ndi nyali yotulutsa laser. Mfundo yowonetsera ikuwonetsedwa mu Chithunzi 2-15.
Chithunzi 2-15 Chithunzi cha chiwonetsero
3>. chitukuko
Chitukuko ndi njira yogwiritsira ntchito mfundo ya kugonana kwa amuna kapena akazi okhaokha komanso kukopa amuna kapena akazi okhaokha kutengera magetsi kutembenuza chithunzithunzi cha electrostatic chobisika chosawoneka ndi maso kukhala zithunzi zooneka. Pakatikati pa maginito wodzigudubuza pali chipangizo chamagetsi (chomwe chimatchedwanso kupanga maginito odzigudubuza, kapena maginito odzigudubuza mwachidule), ndipo tona mu bin ya ufa imakhala ndi zinthu zomwe zimatha kutengedwa ndi maginito, kotero tona iyenera kukopeka. ndi maginito omwe ali pakati pa chodzigudubuza chomwe chikukula.
Pamene ng'oma ya photosensitive imazungulira pamalo pomwe imakhudzana ndi chodzigudubuza cha maginito, gawo la pamwamba pa ng'oma ya photosensitive lomwe silinatenthedwe ndi laser limakhala ndi polarity mofanana ndi tona, ndipo silingatenge tona; pomwe gawo lomwe limawunikiridwa ndi laser lili ndi polarity yofanana ndi tona M'malo mwake, molingana ndi mfundo yothamangitsa amuna kapena akazi okhaokha komanso kukopa amuna kapena akazi okhaokha, tona imatengedwa pamwamba pa ng'oma ya photosensitive komwe laser imayatsidwa. , ndiyeno zojambula zowoneka za tona zimapangidwira pamwamba, monga momwe tawonetsera pa Chithunzi 2-16.
Chithunzi 2-16 Chithunzi cha mfundo zachitukuko
4>. kusamutsa kusindikiza
Pamene tona imasamutsidwa kufupi ndi pepala losindikizira ndi ng'oma ya photosensitive, pali chipangizo chosinthira kumbuyo kwa pepala kuti chigwiritse ntchito kusuntha kwapamwamba kumbuyo kwa pepala. Chifukwa voteji ya chipangizo chosinthira ndipamwamba kuposa mphamvu yamagetsi ya malo owonekera a ng'oma ya photosensitive, zithunzi, ndi zolemba zopangidwa ndi tona zimasamutsidwa kupita ku pepala losindikizira pansi pakuchita kwa gawo lamagetsi la chipangizocho, monga momwe zasonyezedwera. Chithunzi 2-17. Zithunzi ndi zolemba zimawonekera pamwamba pa pepala losindikiza, monga momwe tawonetsera pa Chithunzi 2-18.
Chithunzi 2-17 Chithunzi chojambula chosindikizira (1)
Chithunzi 2-18 Chithunzi chojambula chosindikizira (2)
5>. Kutaya magetsi
Chithunzi cha toner chikasamutsidwa ku pepala losindikizira, toner imangophimba pamwamba pa pepala, ndipo mawonekedwe opangidwa ndi toner amawonongeka mosavuta panthawi yosindikiza mapepala osindikizira. Kuonetsetsa kukhulupirika kwa chithunzi cha toner musanayambe kukonza, pambuyo pa kusamutsidwa, chidzadutsa mu chipangizo chochotsa static. Ntchito yake ndikuchotsa polarity, kusokoneza milandu yonse ndikupangitsa kuti pepala likhale losalowerera ndale kuti pepalalo lilowetse bwino ndikuonetsetsa kuti kusindikiza kumatulutsa Ubwino wa mankhwalawo ukuwonetsedwa mu Chithunzi 2-19.
Chithunzi 2-19 Chojambula chochotsa mphamvu
6> . kukonza
Kuwotcha ndi kukonza ndi njira yogwiritsira ntchito kukakamiza ndi kutentha kwa chithunzi cha tona chomwe chimayikidwa pa pepala losindikizira kuti chisungunuke tona ndikuyimiza mu pepala losindikizira kuti likhale chojambula cholimba pamwamba pa pepala.
Chigawo chachikulu cha tona ndi utomoni, malo osungunuka a tona ndi pafupifupi 100°C, ndi kutentha kwa wodzigudubuza Kutentha wa unit fixing ndi pafupifupi 180°C.
Panthawi yosindikiza, kutentha kwa fuser kukafika pa kutentha komwe kumapangidwira pafupifupi 180°C pamene pepala lomwe limatenga tona likudutsa pakati pa chodzigudubuza chotenthetsera (chomwe chimadziwikanso kuti chodzigudubuza chapamwamba) ndi chopukutira chapamwamba cha rabara (chomwe chimatchedwanso kuti pressure low roller, the lower roller), ndondomeko yosakanikirana idzamalizidwa. Kutentha kwakukulu komwe kumapangidwa kumatenthetsa toner, yomwe imasungunula tona pamapepala, motero imapanga chithunzi cholimba ndi malemba, monga momwe tawonetsera pa Chithunzi 2-20.
Chithunzi 2-20 Mfundo Mfundo chithunzi cha kukonza
Chifukwa chakuti pamwamba pa chowotcha chotenthetsera chimakutidwa ndi chofunda chomwe sichiri chophweka kumamatira ku toner, toner sichidzatsatira pamwamba pa chowotcha chotenthetsera chifukwa cha kutentha kwakukulu. Pambuyo pokonza, pepala losindikizira limasiyanitsidwa ndi chowotcha chotenthetsera ndi claw yolekanitsa ndikutumizidwa kunja kwa chosindikizira kudzera mu chopukusira cha chakudya cha pepala.
Njira yoyeretsera ndikukwapula tona pa ng'oma ya photosensitive yomwe siinasamutsidwe kuchokera pamwamba pa pepala kupita ku binki ya tona.
Panthawi yosinthira, chithunzi cha tona pa ng'oma ya photosensitive sichingasinthidwe kwathunthu ku pepala. Ngati sichitsukidwa, tona yotsalira pamwamba pa ng'oma ya photosensitive idzatengedwera mumzere wotsatira wosindikiza, kuwononga chithunzi chatsopanocho. , potero zimakhudza mtundu wa zosindikiza.
Ntchito yoyeretsayi imachitika ndi chopukutira cha rabara, chomwe ntchito yake ndikuyeretsa ng'oma ya photosensitive isanayambe kusindikiza kwa ng'oma ya photosensitive. Chifukwa tsamba la mphira woyeretsera scraper silimva kuvala komanso kusinthasintha, tsambalo limapanga ngodya yodulidwa ndi pamwamba pa ng'oma yojambula zithunzi. Pamene ng'oma yojambula zithunzi izungulira, tona pamwamba pake imakankhidwa mu bin ya zinyalala ndi scraper, monga momwe chithunzi 2-21 chikusonyezera.
Chithunzi 2-21 Chojambula choyeretsa
Nthawi yotumiza: Feb-20-2023