1 Cov qauv sab hauv ntawm lub tshuab luam ntawv laser
Cov qauv sab hauv ntawm lub tshuab luam ntawv laser muaj plaub qhov loj, raws li pom hauv daim duab 2-13.
Daim duab 2-13 Cov qauv sab hauv ntawm lub tshuab luam ntawv laser
(1) Laser Unit: emits ib lub teeb laser nrog cov ntaub ntawv qhia kom nthuav tawm lub nruas photosensitive.
(2) Paper Feeding Unit: tswj cov ntawv kom nkag mus rau lub tshuab luam ntawv ntawm lub sijhawm tsim nyog thiab tawm hauv lub tshuab luam ntawv.
(3) Kev Tsim Kho: Npog qhov nthuav dav ntawm lub nruas photosensitive nrog toner los ua ib daim duab uas pom tau los ntawm qhov muag liab qab, thiab hloov mus rau saum npoo ntawm daim ntawv.
(4) Kho chav tsev: Lub toner npog lub ntsej muag ntawm daim ntawv yog yaj thiab khov kho ntawm daim ntawv siv lub zog thiab cua sov.
2 Lub hauv paus ntsiab lus ua haujlwm ntawm lub tshuab luam ntawv laser
Lub tshuab luam ntawv laser yog ib qho khoom siv tso tawm uas ua ke nrog laser scanning thev naus laus zis thiab hluav taws xob duab thev naus laus zis.Cov tshuab luam ntawv laser muaj cov haujlwm sib txawv vim muaj cov qauv sib txawv, tab sis kev ua haujlwm ua ntu zus thiab cov ntsiab lus zoo ib yam.
Noj cov qauv HP laser tshuab luam ntawv ua piv txwv, kev ua haujlwm raws li hauv qab no.
(1) Thaum tus neeg siv xa cov lus txib mus rau lub tshuab luam ntawv los ntawm lub khoos phis tawj ua haujlwm, cov ntaub ntawv nraaj yuav tsum tau luam tawm thawj zaug rau hauv cov ntaub ntawv binary los ntawm lub tshuab luam ntawv tsav tsheb, thiab thaum kawg xa mus rau pawg tswj hwm lub ntsiab.
(2) Lub Rooj Tswjhwm Saib tseem ceeb tau txais thiab txhais cov ntaub ntawv binary xa los ntawm tus neeg tsav tsheb, kho nws mus rau lub teeb ci laser, thiab tswj lub laser ntu kom tawm lub teeb raws li cov ntaub ntawv no.Nyob rau tib lub sijhawm, qhov chaw ntawm lub nruas photosensitive yog them los ntawm cov khoom siv them nyiaj.Tom qab ntawd lub laser beam nrog nraaj ntaub ntawv yog generated los ntawm lub laser scanning ib feem kom nthuav tawm lub nruas photosensitive.Ib daim duab electrostatic latent yog tsim nyob rau saum npoo ntawm lub toner nruas tom qab raug.
(3) Tom qab lub toner cartridge nyob rau hauv kev sib cuag nrog cov txheej txheem tsim, cov duab latent yuav pom cov duab.Thaum dhau los ntawm kev hloov pauv, lub toner raug xa mus rau daim ntawv nyob rau hauv qhov kev txiav txim ntawm lub tshuab hluav taws xob hloov khoom siv.
(4) Tom qab kev hloov pauv tiav, daim ntawv hu rau cov hluav taws xob-dissipating sawtooth, thiab tso cov nqi ntawm daim ntawv mus rau hauv av.Thaum kawg, nws nkag mus rau qhov kub-kub kho qhov system, thiab cov duab thiab cov ntawv tsim los ntawm toner tau muab tso rau hauv daim ntawv.
(5) Tom qab cov duab nraaj luam tawm, cov cuab yeej ntxuav tawm tshem tawm cov toner tsis hloov, thiab nkag mus rau lub voj voog ua haujlwm tom ntej.
Tag nrho cov txheej txheem ua haujlwm saum toj no yuav tsum mus dhau xya kauj ruam: them nyiaj, raug, kev txhim kho, hloov pauv, tshem tawm hluav taws xob, kho, thiab tu.
1>.Them nqi
Txhawm rau ua kom lub nruas photosensitive nqus toner raws li cov ntaub ntawv nraaj, lub nruas photosensitive yuav tsum tau them ua ntej.
Tam sim no muaj ob txoj hauv kev them nyiaj rau cov tshuab luam ntawv hauv khw, ib qho yog corona charging thiab lwm qhov yog them rau cov menyuam, ob qho tib si muaj lawv tus yam ntxwv.
Corona charging yog ib qho kev them nyiaj ncaj qha uas siv cov khoom siv hluav taws xob ntawm lub nruas photosensitive li electrode, thiab cov hlau nyias nyias tau muab tso rau ze ntawm lub nruas photosensitive li lwm cov electrode.Thaum luam tawm lossis luam tawm, qhov hluav taws xob muaj zog heev yog siv rau cov xaim, thiab qhov chaw nyob ib ncig ntawm cov hlau ua rau lub zog hluav taws xob.Nyob rau hauv qhov kev txiav txim ntawm hluav taws xob teb, ions nrog tib polarity li corona hlau ntws mus rau saum npoo ntawm lub nruas photosensitive.Txij li thaum lub photoreceptor nyob rau saum npoo ntawm lub nruas photosensitive muaj kev tiv thaiv siab nyob rau hauv qhov tsaus ntuj, tus nqi yuav tsis ntws tawm, yog li lub peev xwm ntawm lub nruas photosensitive yuav nce ntxiv.Thaum lub peev xwm nce mus rau qhov kev lees paub siab tshaj plaws, cov txheej txheem them nyiaj xaus.Qhov tsis zoo ntawm txoj kev them nyiaj no yog tias nws yooj yim los tsim hluav taws xob thiab ozone.
Kev them nyiaj rau cov menyuam charging yog ib txoj kev sib tiv tauj, uas tsis tas yuav muaj lub zog them siab thiab yog ib puag ncig zoo.Yog li ntawd, feem ntau cov tshuab luam ntawv laser siv cov chais kom them nyiaj.
Cia peb coj tus nqi ntawm cov khoom siv them nyiaj ua piv txwv kom nkag siab tag nrho cov txheej txheem ua haujlwm ntawm lub tshuab luam ntawv laser.
Ua ntej, qhov high-voltage Circuit Court generates high voltage, uas tsub lub nto ntawm photosensitive nruas nrog uniform tsis zoo hluav taws xob los ntawm lub charger tivthaiv.Tom qab lub nruas photosensitive thiab lub charger roller tig synchronously rau ib lub voj voog, tag nrho saum npoo ntawm lub nruas photosensitive raug them nrog cov nqi tsis zoo, raws li qhia hauv daim duab 2-14.
Daim duab 2-14 Schematic daim duab ntawm kev them nyiaj
2 >.nphav
Kev raug yog ua nyob ib ncig ntawm lub nruas photosensitive, uas yog raug nrog ib tug laser beam.Qhov saum npoo ntawm lub nruas duab yog ib txheej photsensitive txheej npog lub npoo ntawm cov txhuas aluminium, thiab cov neeg ua tus coj ua txhuas aluminium yog grounded.
Cov txheej txheej photosensitive yog cov khoom siv photosensitive, uas yog tus cwj pwm los ntawm kev ua haujlwm thaum raug lub teeb, thiab insulating ua ntej raug.Ua ntej raug, tus nqi sib xws yog them los ntawm cov khoom siv them nyiaj, thiab qhov chaw irradiated tom qab tau irradiated los ntawm lub laser yuav sai sai ua tus neeg xyuas pib thiab kev coj ua nrog aluminium alloy conductor, yog li tus nqi raug tso tawm rau hauv av los tsim cov ntawv hauv cheeb tsam. daim ntawv luam ntawv.Qhov chaw tsis irradiated los ntawm lub laser tseem tuav tus nqi qub, tsim ib qho chaw dawb paug ntawm daim ntawv luam ntawv.Txij li cov duab cim no tsis pom, nws yog hu ua electrostatic latent duab.
Ib lub teeb liab synchronous sensor kuj tau nruab rau hauv lub scanner.Lub luag haujlwm ntawm lub sensor no yog los xyuas kom meej tias qhov ntsuas qhov deb yog zoo ib yam kom lub laser beam irradiated rau saum npoo ntawm lub nruas photosensitive tuaj yeem ua tiav cov duab zoo tshaj plaws.
Lub teeb laser emits ib lub teeb laser nrog cov ntaub ntawv ua cim, uas ci rau ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm lub ntsej muag, thiab lub ntsej muag prism qhia txog lub teeb laser rau saum npoo ntawm lub nruas photosensitive los ntawm lub lens pawg, yog li luam theej duab photosensitive nruas horizontally.Lub ntsiab lub cev muaj zog tsav lub nruas photosensitive mus tas li tig kom paub qhov ntsug scanning ntawm lub nruas photosensitive los ntawm lub laser emitting teeb.Lub hauv paus ntsiab lus raug pom muaj nyob hauv daim duab 2-15.
Daim duab 2-15 Schematic daim duab ntawm qhov raug
3>.kev loj hlob
Kev loj hlob yog tus txheej txheem ntawm kev siv lub hauv paus ntsiab lus ntawm tib-poj niam txiv repulsion thiab opposite-poj niam txiv neej attraction ntawm hluav taws xob tsub kom tig lub electrostatic latent duab tsis pom ntawm qhov muag liab qab rau hauv cov duab pom.Muaj cov khoom siv hlau nplaum nyob hauv nruab nrab ntawm cov hlau nplaum sib nqus (tseem hu ua kev tsim cov hlau nplaum sib nqus, lossis cov hlau nplaum luv luv), thiab cov toner hauv cov hmoov nplej muaj cov khoom sib nqus uas tuaj yeem nqus tau los ntawm cov hlau nplaum, yog li cov toner yuav tsum tau nyiam. los ntawm cov hlau nplaum nyob hauv nruab nrab ntawm kev tsim cov hlau nplaum.
Thaum lub nruas photosensitive tig mus rau txoj hauj lwm uas nws yog nyob rau hauv kev sib cuag nrog tus tsim magnetic roller, ib feem ntawm lub nto ntawm lub photosensitive nruas uas tsis irradiated los ntawm lub laser muaj tib polarity li lub toner, thiab yuav tsis nqus toner;Thaum lub sij hawm uas yog irradiated los ntawm lub laser muaj tib polarity li lub toner On qhov tsis tooj, raws li lub hauv paus ntsiab lus ntawm tib-poj niam txiv neej repelling thiab opposite-poj niam txiv neej attracting, toner yog absorbed rau saum npoo ntawm photosensitive nruas qhov twg lub laser yog irradiated. , thiab tom qab ntawd pom cov duab toner yog tsim rau saum npoo, raws li pom hauv daim duab 2-16.
Daim duab 2-16 Daim duab qhia kev txhim kho
4 >.hloov luam ntawv
Thaum lub toner raug xa mus rau ib puag ncig ntawm daim ntawv luam ntawv nrog lub nruas photosensitive, muaj ib qho khoom siv hloov mus rau sab nraum qab ntawm daim ntawv los thov kev hloov pauv siab mus rau sab nraum qab ntawm daim ntawv.Vim tias qhov hluav taws xob ntawm lub tshuab hloov hluav taws xob siab tshaj qhov hluav taws xob ntawm thaj chaw raug ntawm lub nruas photosensitive, cov duab, thiab cov ntawv tsim los ntawm lub toner raug xa mus rau cov ntawv luam ntawv nyob rau hauv qhov kev txiav txim ntawm hluav taws xob teb ntawm lub charger ntaus ntawv, raws li qhia. hauv daim duab 2-17.Cov duab kos thiab cov ntawv tshwm nyob rau saum npoo ntawm daim ntawv luam ntawv, raws li pom hauv daim duab 2-18.
Daim duab 2-17 Schematic daim duab ntawm kev hloov luam ntawv (1)
Daim duab 2-18 Schematic daim duab ntawm kev hloov luam ntawv (2)
5>.Dissipate hluav taws xob
Thaum cov duab toner raug xa mus rau daim ntawv luam ntawv, lub toner tsuas yog npog rau saum npoo ntawm daim ntawv, thiab cov qauv duab tsim los ntawm toner tau yooj yim puas thaum lub sij hawm luam ntawv xa cov txheej txheem.Txhawm rau kom ntseeg tau qhov kev ncaj ncees ntawm cov duab toner ua ntej kho, tom qab kev hloov pauv, nws yuav dhau los ntawm cov cuab yeej tshem tawm zoo li qub.Nws txoj haujlwm yog txhawm rau tshem tawm cov polarity, tshem tawm tag nrho cov nqi thiab ua kom cov ntawv nruab nrab kom cov ntawv tuaj yeem nkag mus rau hauv lub tsev kho kom zoo thiab xyuas kom cov khoom luam tawm tau zoo, yog pom hauv daim duab 2-19.
Daim duab 2-19 Schematic daim duab ntawm lub hwj chim tshem tawm
6 >.kho
Cua sov thiab kho yog cov txheej txheem ntawm kev siv lub siab thiab cua sov rau cov duab toner adsorbed rau ntawm daim ntawv luam ntawv kom yaj lub toner thiab muab tso rau hauv daim ntawv luam ntawv los tsim cov duab ruaj khov rau ntawm daim ntawv.
Lub ntsiab tivthaiv ntawm toner yog cob, lub melting point ntawm toner yog hais txog 100°C, thiab qhov kub ntawm cov cua kub ntawm lub tsev kho yog li 180°C.
Thaum lub sij hawm luam ntawv txheej txheem, thaum qhov kub ntawm lub fuser mus txog ib tug predetermined kub ntawm txog 180°C thaum daim ntawv uas nqus cov toner dhau los ntawm qhov sib txawv ntawm cov menyuam cua sov (tseem hu ua cov menyuam sab sauv) thiab cov menyuam roj hmab siab (tseem hu ua lub siab qis rau cov menyuam, cov menyuam hauv qab), cov txheej txheem fuse yuav ua tiav.Lub tshuab hluav taws xob tsim hluav taws xob ua kom sov lub toner, uas melts lub toner ntawm daim ntawv, yog li tsim cov duab thiab cov ntawv, raws li pom hauv daim duab 2-20.
Daim duab 2-20 Daim duab qhia txog kev kho
Vim tias qhov chaw ntawm lub tshuab cua sov yog coated nrog cov txheej txheem uas tsis yooj yim rau kev ua raws li cov toner, lub toner yuav tsis ua raws li qhov chaw ntawm lub tshuab cua sov vim qhov kub thiab txias.Tom qab kho, daim ntawv luam tawm yog sib cais los ntawm cov cua kub rau cov menyuam los ntawm kev sib cais claw thiab xa tawm ntawm lub tshuab luam ntawv los ntawm cov ntawv pub rau cov menyuam.
Cov txheej txheem ntxuav yog khawb lub toner ntawm lub nruas photosensitive uas tsis tau raug xa tawm ntawm daim ntawv mus rau hauv khib nyiab toner.
Thaum lub sijhawm hloov cov txheej txheem, cov duab toner ntawm lub nruas photosensitive tsis tuaj yeem hloov mus rau daim ntawv.Yog tias nws tsis raug ntxuav, lub toner tseem tshuav ntawm qhov chaw ntawm lub nruas photosensitive yuav raug nqa mus rau hauv lub voj voog luam ntawv tom ntej, rhuav tshem cov duab tsim tshiab., yog li cuam tshuam rau kev luam ntawv zoo.
Cov txheej txheem ntxuav yog ua los ntawm cov roj hmab scraper, nws txoj haujlwm yog los ntxuav lub nruas photosensitive ua ntej lub voj voog tom ntej ntawm photosensitive nruas luam ntawv.Vim hais tias cov hniav ntawm cov roj hmab tu scraper yog hnav-resistant thiab hloov tau, cov hniav tsim ib lub kaum sab xis nrog rau saum npoo ntawm lub nruas photosensitive.Thaum lub nruas photosensitive tig, lub toner ntawm qhov chaw yog muab pov tseg rau hauv cov khib nyiab toner los ntawm lub scraper, raws li qhia hauv daim duab 2-21 qhia.
Daim duab 2-21 Schematic daim duab ntawm kev tu
Post lub sij hawm: Feb-20-2023