1 Kapangidwe ka mkati mwa chosindikizira cha laser
Kapangidwe ka mkati mwa chosindikizira cha laser kali ndi magawo anayi akuluakulu, monga momwe zasonyezedwera pa Chithunzi 2-13.
Chithunzi 2-13 Kapangidwe ka mkati mwa chosindikizira cha laser
(1) Chigawo cha Laser: chimatulutsa kuwala kwa laser komwe kali ndi mawu olembedwa kuti chiwonetse ng'oma yomwe imakhudzidwa ndi kuwala.
(2) Chida Chodyetsera Mapepala: lamulirani pepalalo kuti lilowe mu chosindikizira panthawi yoyenera ndikutuluka mu chosindikizira.
(3) Chigawo Chopangira: Phimbani gawo lowonekera la ng'oma yowunikira kuwala ndi toner kuti mupange chithunzi chomwe chingawonekere ndi maso, ndikuchisamutsira pamwamba pa pepala.
(4) Chigawo Chokonzera: Toner yomwe imaphimba pamwamba pa pepala imasungunuka ndikukhazikika mwamphamvu papepala pogwiritsa ntchito mphamvu ndi kutentha.
2 Mfundo yogwirira ntchito ya chosindikizira cha laser
Chosindikizira cha laser ndi chipangizo chotulutsa chomwe chimaphatikiza ukadaulo wosanthula wa laser ndi ukadaulo wa zamagetsi. Chosindikizira cha laser chili ndi ntchito zosiyanasiyana chifukwa cha mitundu yosiyanasiyana, koma ndondomeko yogwirira ntchito ndi yofanana.
Potengera chitsanzo cha makina osindikizira a laser a HP, ndondomeko yogwirira ntchito ndi iyi:
(1) Wogwiritsa ntchito akatumiza lamulo losindikiza ku chosindikizira kudzera mu kompyuta, chidziwitso chazithunzi chomwe chiyenera kusindikizidwa chimasinthidwa kaye kukhala chidziwitso cha binary kudzera mu chosindikizira choyendetsa, kenako chimatumizidwa ku bolodi lalikulu lowongolera.
(2) Bolodi lalikulu lowongolera limalandira ndikutanthauzira zambiri zomwe zatumizidwa ndi dalaivala, kuzisintha kuti zikhale ndi kuwala kwa laser, ndikulamulira gawo la laser kuti litulutse kuwala malinga ndi izi. Nthawi yomweyo, pamwamba pa ng'oma yowunikira kuwala imayikidwa ndi chipangizo chochajira. Kenako kuwala kwa laser komwe kumakhala ndi chidziwitso chojambulidwa kumapangidwa ndi gawo losanthula la laser kuti liwonetse ng'oma yowunikira kuwala. Chithunzi chobisika cha electrostatic chimapangidwa pamwamba pa ng'oma ya toner pambuyo powunikira kuwala.
(3) Katiriji ya toner ikakhudzana ndi makina omwe akupanga, chithunzi chobisika chimawonekera. Podutsa mu makina osamutsira, toner imasamutsidwira ku pepala pansi pa mphamvu yamagetsi ya chipangizo chosamutsira.
(4) Pambuyo poti kusamutsa kwatha, pepalalo limakhudza chitsulo chothira magetsi, ndikutulutsa mphamvu pa pepalalo pansi. Pomaliza, limalowa mu dongosolo lokhazikitsa kutentha kwambiri, ndipo zithunzi ndi zolemba zopangidwa ndi toner zimaphatikizidwa mu pepalalo.
(5) Pambuyo poti chidziwitso chazithunzi chasindikizidwa, chipangizo choyeretsera chimachotsa toner yosasamutsidwa, ndikulowa munthawi yotsatira yogwirira ntchito.
Njira zonse zogwirira ntchito zomwe zili pamwambapa ziyenera kudutsa masitepe asanu ndi awiri: kuyatsa, kuyika, kupanga, kusamutsa, kuchotsa magetsi, kukonza, ndi kuyeretsa.
1>. Kulipiritsa
Kuti ng'oma yolandira kuwala igwire toner malinga ndi chithunzi, ng'oma yolandira kuwala iyenera kuyikidwa chaji kaye.
Pakadali pano pali njira ziwiri zochajira makina osindikizira pamsika, imodzi ndi ya corona charging ndipo inayo ndi ya charging roller charging, zonse ziwiri zili ndi makhalidwe awoawo.
Kuchaja kwa Corona ndi njira yochaja yosalunjika yomwe imagwiritsa ntchito gawo loyendetsa magetsi la ng'oma yowunikira kuwala ngati electrode, ndipo waya woonda kwambiri wachitsulo umayikidwa pafupi ndi ng'oma yowunikira kuwala ngati electrode ina. Pokopera kapena kusindikiza, magetsi amphamvu kwambiri amayikidwa pa waya, ndipo malo ozungulira waya amapanga mphamvu yamagetsi yamphamvu. Pansi pa mphamvu ya magetsi, ma ayoni omwe ali ndi polarity yofanana ndi waya wa corona amayenderera pamwamba pa ng'oma yowunikira kuwala. Popeza cholandirira kuwala pamwamba pa ng'oma yowunikira kuwala chili ndi kukana kwakukulu mumdima, mphamvu sidzatuluka, kotero mphamvu ya pamwamba ya ng'oma yowunikira kuwala idzapitirira kukwera. Mphamvu ikakwera kufika pa mphamvu yovomerezeka kwambiri, njira yochaja imatha. Kuipa kwa njira iyi yochaja ndikuti ndikosavuta kupanga ma radiation ndi ozone.
Kuchaja chozungulira choyatsira ndi njira yochaja yolumikizana, yomwe siifuna mphamvu yokwera yamagetsi ndipo ndi yoteteza chilengedwe. Chifukwa chake, ma printer ambiri a laser amagwiritsa ntchito ma charging roller kuti azitha kuchaja.
Tiyeni titenge chitsanzo cha kuyatsa choyimitsa choyimitsa ngati chitsanzo kuti timvetse bwino momwe chosindikizira cha laser chimagwirira ntchito.
Choyamba, gawo lamagetsi amphamvu limapanga magetsi amphamvu kwambiri, omwe amachaja pamwamba pa ng'oma yolandira kuwala ndi magetsi ofanana ndi magetsi kudzera mu gawo lochaja. Ng'oma yolandira kuwala ndi choyimitsa chochaja zitazungulira motsatizana kwa nthawi imodzi, pamwamba ponse pa ng'oma yolandira kuwala imachajidwa ndi magetsi ofanana ndi magetsi, monga momwe zasonyezedwera pa Chithunzi 2-14.
Chithunzi 2-14 Chithunzi cha dongosolo la kuyitanitsa
2>. kuonekera
Kuwonekera kumachitika mozungulira ng'oma yolandira kuwala, yomwe imawonetsedwa ndi kuwala kwa laser. Pamwamba pa ng'oma yolandira kuwala ndi gawo lolandira kuwala, gawo lolandira kuwala limaphimba pamwamba pa kondakitala ya aluminiyamu, ndipo kondakitala ya aluminiyamu imakhala pansi.
Chigawo choyatsira kuwala ndi chinthu chomwe chimadziwika ndi mphamvu yoyendetsa kuwala chikayang'anizana ndi kuwala, komanso chimateteza kuwala chisanayang'anizana ndi kuwala. Chisanayang'anizana ndi kuwala, mphamvu yofanana imayikidwa ndi chipangizo choyatsira, ndipo malo omwe amayatsidwa ndi kuwala pambuyo poti ayang'anizana ndi kuwala kwa laser adzakhala kondakitala ndi kondakitala wa aluminiyamu, kotero mphamvu imatulutsidwa pansi kuti ipange malo olembedwa papepala losindikizira. Malo omwe sanayatsidwe ndi kuwala kwa kuwala kwa laser amasungabe mphamvu yoyambirira, ndikupanga malo opanda kanthu papepala losindikizira. Popeza chithunzi cha munthu uyu sichiwoneka, chimatchedwa chithunzi chobisika cha electrostatic.
Chojambulira chizindikiro chogwirizana chimayikidwanso mu chojambulira. Ntchito ya chojambulira ichi ndikuwonetsetsa kuti mtunda wa kusanthula ukhale wofanana kuti kuwala kwa laser komwe kumayatsidwa pamwamba pa ng'oma yowunikira kuwala kukwaniritse zotsatira zabwino kwambiri zojambulira.
Nyali ya laser imatulutsa kuwala kwa laser komwe kumawonetsa zizindikiro za munthu, komwe kumawala pa prism yozungulira yowala mbali zambiri, ndipo prism yowala imawonetsa kuwala kwa laser pamwamba pa ng'oma yowala kudzera mu gulu la lens, motero imasanthula ng'oma yowala mopingasa. Mota yayikulu imayendetsa ng'oma yowala kuti izungulire mosalekeza kuti izindikire kusanthula koyima kwa ng'oma yowala pogwiritsa ntchito nyali yowala. Mfundo yowunikira ikuwonetsedwa pa Chithunzi 2-15.
Chithunzi 2-15 Chithunzi cha chithunzi cha kuwonetsedwa
3>. chitukuko
Kukula ndi njira yogwiritsira ntchito mfundo yoti amuna kapena akazi okhaokha azikana komanso kukopa mphamvu zamagetsi za amuna kapena akazi okhaokha kuti asinthe chithunzi chobisika cha electrostatic chomwe sichikuwoneka ndi maso amaliseche kukhala zithunzi zooneka. Pali chipangizo cha maginito pakati pa magnetic roller (chomwe chimatchedwanso developing magnetic roller, kapena magnetic roller mwachidule), ndipo toner yomwe ili mu powder bin ili ndi zinthu zamaginito zomwe zimatha kuyamwa ndi maginito, kotero toner iyenera kukokedwa ndi maginito yomwe ili pakati pa magnetic roller yomwe ikukula.
Pamene ng'oma yowunikira kuwala izungulira pamalo pomwe ikukhudzana ndi chozungulira cha maginito chomwe chikukula, gawo la pamwamba pa ng'oma yowunikira kuwala lomwe silikuwotchedwa ndi laser limakhala ndi polarity yofanana ndi toner, ndipo silidzayamwa toner; pomwe gawo lomwe likuwotchedwa ndi laser lili ndi polarity yofanana ndi toner. M'malo mwake, malinga ndi mfundo yokakamiza amuna kapena akazi okhaokha komanso kukopa amuna kapena akazi okhaokha, toner imayamwa pamwamba pa ng'oma yowunikira kuwala komwe laser imawotchedwa, kenako zithunzi zooneka za toner zimapangidwa pamwamba, monga momwe zasonyezedwera pa Chithunzi 2-16.
Chithunzi 2-16 Chithunzi cha mfundo za chitukuko
4>. kusindikiza kusamutsa
Pamene toner isamutsidwa pafupi ndi pepala losindikizira ndi ng'oma yowunikira kuwala, pamakhala chipangizo chosinthira kumbuyo kwa pepala kuti chigwiritse ntchito kusamutsa mphamvu yayikulu kumbuyo kwa pepalalo. Chifukwa mphamvu ya chipangizo chosinthira ndi yokwera kuposa mphamvu ya dera lowonekera la ng'oma yowunikira kuwala, zojambula, ndi zolemba zopangidwa ndi toner zimasamutsidwa kupita ku pepala losindikizira pansi pa mphamvu yamagetsi ya chipangizo chochajira, monga momwe zasonyezedwera pa Chithunzi 2-17. Zojambula ndi zolemba zimawonekera pamwamba pa pepala losindikizira, monga momwe zasonyezedwera pa Chithunzi 2-18.
Chithunzi 2-17 Chithunzi chojambula cha kusindikiza kosamutsa (1)
Chithunzi 2-18 Chithunzi chojambula cha kusindikiza kosamutsa (2)
5>. Chotsani magetsi
Chithunzi cha toner chikasamutsidwira ku pepala losindikizira, toner imaphimba pamwamba pa pepalalo, ndipo kapangidwe ka chithunzi chomwe chimapangidwa ndi toner kamawonongeka mosavuta panthawi yotumizira mapepala osindikizira. Kuti chithunzi cha toner chikhale cholimba chisanakonzedwe, pambuyo pochisamutsa, chidzadutsa mu chipangizo chochotsa zinthu mosasunthika. Ntchito yake ndikuchotsa polarity, kuletsa ma charges onse ndikupanga pepala kukhala losalowerera kuti pepalalo lilowe bwino mu fixing unit ndikuwonetsetsa kuti kusindikiza kotuluka kwa chinthucho kuli bwino, kwawonetsedwa pa Chithunzi 2-19.
Chithunzi 2-19 Chithunzi chojambula cha kuchotsa mphamvu
6>. kukonza
Kutenthetsa ndi kukonza ndi njira yogwiritsira ntchito mphamvu ndi kutentha pa chithunzi cha toner chomwe chimamatira pa pepala losindikizira kuti chisungunuke toner ndikuyiyika mu pepala losindikizira kuti apange chithunzi cholimba pamwamba pa pepalalo.
Gawo lalikulu la toner ndi utomoni, pomwe kusungunuka kwa toner ndi pafupifupi madigiri 100.°C, ndipo kutentha kwa chotenthetsera chotenthetsera cha chipangizo chokonzera ndi pafupifupi madigiri 180°C.
Pa nthawi yosindikiza, kutentha kwa fuser kufika pa kutentha kotsimikizika kwa pafupifupi madigiri 180°C pamene pepala lomwe limayamwa toner limadutsa pakati pa chotenthetsera (chomwe chimadziwikanso kuti chopondera chapamwamba) ndi chopondera cha rabara cha pressure (chomwe chimadziwikanso kuti chopondera cha pressure lower, chopondera chapansi), njira yolumikizira idzamalizidwa. Kutentha kwakukulu komwe kumapangidwa kumatenthetsa toner, yomwe imasungunula toner papepala, motero kupanga chithunzi ndi mawu olimba, monga momwe zasonyezedwera pa Chithunzi 2-20.
Chithunzi 2-20 Chithunzi chachikulu cha kukonza
Popeza pamwamba pa chotenthetsera chotenthetsera pali chophimba chomwe sichimamatirira ku toner, toner siimamatirira pamwamba pa chotenthetsera chotenthetsera chifukwa cha kutentha kwambiri. Pambuyo pokonza, pepala losindikizira limalekanitsidwa ndi chotenthetsera chotenthetsera ndi chikhadabo cholekanitsa ndikutumizidwa kuchokera ku chosindikizira kudzera mu chotenthetsera cha mapepala.
Njira yoyeretsera ndi kukanda toner pa ng'oma yowunikira kuwala yomwe sinasamutsidwe kuchokera pamwamba pa pepala kupita ku chidebe cha toner.
Pa nthawi yosamutsa, chithunzi cha toner pa ng'oma yolandira kuwala sichingasamutsidwiretu ku pepala. Ngati sichinatsukidwe, toner yotsala pamwamba pa ng'oma yolandira kuwala idzanyamulidwa mu nthawi yotsatira yosindikiza, kuwononga chithunzi chatsopano chomwe chapangidwa. , motero kukhudza ubwino wa kusindikiza.
Kuyeretsa kumachitika ndi chotsukira rabala, chomwe ntchito yake ndi kuyeretsa ng'oma yomwe imalandira kuwala isanayambe kusindikiza ng'oma yomwe imalandira kuwala. Chifukwa tsamba la chotsukira rabala ndi losatha kutha komanso losinthasintha, tsambalo limapanga ngodya yodulidwa ndi pamwamba pa ng'oma yomwe imalandira kuwala. Ng'oma yomwe imalandira kuwala ikazungulira, toner yomwe ili pamwamba pake imakokedwa mu chidebe cha toner ndi chotsukira, monga momwe zasonyezedwera pa Chithunzi 2-21.
Chithunzi 2-21 Chithunzi chojambula cha kuyeretsa
Nthawi yotumizira: Feb-20-2023