Kev txhim kho ntawm cov qauv thiab kev ua haujlwm ntawm cov laser printers digital
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
Yog xav paub ntxiv, thov mus saib
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Yooj yim qauv
Lub tshuab luam ntawv laser yog tsim los ntawm ib lub laser, ib qho modulator acousto-optic, lub siab muaj zog, lub scanner, lub synchronizer, thiab lub teeb deflector. Cov kev ua haujlwm ntawm lub tshuab luam ntawv laser yog hloov cov ntaub ntawv binary dot matrix uas xa tawm los ntawm lub voj voog khiav ntawm lub teeb kab laser, thiab mam li luam theej duab. Lub cev. Lub photoreceptor thiab lub koob yees duab mechanism tsim ib qho kev hloov xa hluav taws xob electrophotographic, thiab daim duab daim duab tso rau ntawm cov duab nrig yog muab xa mus rau ntawm daim ntawv luam, thiab lub ntsiab cai yog tib yam li cov tshuab luam ntawv. Laser cov tshuab luam ntawv yog cov khoom siv uas tsis yog siv zuj zus uas muab cov tshuab luam yeeb nrog tshuab hluav taws xob luam tawm. Nws cov qauv yog txawv, qhov kev luam ntawv tseem txawv, tab sis txoj haujlwm ua haujlwm yeej zoo li qub, nws yuav tsum mus txog: them, raug, hloov, hloov tawm, siv hluav taws xob, tu, kho xya kev, tsib uas yog tawm ib ncig ntawm lub nruas photosensitive. Thaum cov ntawv luam los yog cov duab yuav tsum luam tawm yog lub tswv yim rau hauv lub computer, nws yog preprocessed los ntawm lub computer software. Tom qab ntawd tus neeg tsav tsheb lub tshuab luam ntawv hloov cov lus hais ua luam (tshuab luam ntawv) uas lub tshuab luam ntawv tuaj yeem pom txog qhov siab khiav hluav taws xob los tswj kev qhib thiab kaw ntawm lub laser emitter tsim ib txoj hlua laser laser, thiab ces scans daim iav rau hauv cov yeeb yaj duab zaub . Cov duab nrig ntawm lub qhov muag tau raug rau cov kab xev thaij, thiab lub longitudinal scanning yog pom los ntawm txoj kev sib hloov ntawm cov duab nrig ntawm nws tus kheej.
Lub nruas fais fab yog ib yam khoom zoo nkauj uas yog lub teeb ci. Daim ntawv pov thawj ntawm cov ntaub ntub dej ntawm lub nplhaib tau ntim nrog ib lub tsos tsis raws cai los ntawm tus neeg them nyiaj rau lub tshuab ua ntej qhov kev sib tw raug. Thaum tus kab teeb laser raug luam tawm hauv ib qho duab matrix rau ntawm qhov kev nrawm nrawm, qhov chaw scanned yog muab los ntawm qhov raug, thiab tus nqi them tawm sai heev los ntawm txoj kev xaav tawm hauv av. Qhov chaw uas tsis tau yog tseem tuav cov nqi yuav luag, yog li ntawd qhov sib txawv ntawm qhov latent duab (electrostatic latent duab) yog tsim rau ntawm lub teeb nrawm, thaum cov duab nrawm nrog lub electrostatic latent duab yog tig mus rau txoj hauj lwm qhov twg toner magnetic cov menyuam yog loaded. Qhov tawm tsam ntawm toner yog adsorbed mus rau saum npoo ntawm cov duab nrig ua kom tsim tau ib daim duab toner.
Thaum cov xim nrawm nrig ntawm cov duab toner tseem tig los thiab ncav cov duab hloov khoom siv, ib daim ntawv ntawm cov ntawv luam tawm ib lub sij hawm xa mus rau nruab nrab ntawm cov duab nrig thiab cov duab hloov khoom siv, thaum lub sij hawm cov duab hloov cuab yeej siv lub zog muaj zog nyob sab nraum qab ntawm daim ntawv luam tawm. Daim duab toner rau ntawm cov duab nrig yog attracted rau cov ntawv luam tawm, thiab cov ntawv xov xwm uas nqa cov duab toner raug xa mus rau kev kub-txias kho cua sov thiab cua sov kub, lub toner yog yaj, raus hauv ntawv luam, thiab thaum kawg tso zis. Puas yog cov ntawv luam tawm lossis duab.
Kev tsim cov qauv, kev tsim qauv, kev tswj cov cuab yeej thiab cov cuab yeej ntawm cov khoom siv thiab cov khoom tsim nyog rau kev ua haujlwm ntawm lub tshuab luam ntawv laser yuav txawv nyob ntawm lub hom thiab qauv, xws li:
1Txoj kev cai ntawm lub nruas yog txawv.
2 Lub nruas raug them nrog ntau qhov chaw. Qee cov qauv siv ib txoj kev xaim hluav taws xob kom them tus nqi nruas, thiab qee cov qauv siv lub tshuab them (FCR) kom them tus nruas.
3 Cov khoom siv hauv kev hloov tshuab muaj feem sib txawv.
4 Lub nruas raug tshwm sim nyob hauv ntau hom ntawv. Qee cov qauv siv scan daim iav los ncaj qha luam theej lub nruas, thiab qee cov qauv siv qhov kev lag luam uas pom tau tias Las Taws teeb pom kev rau lub nruas.
Tab sis lawv ua haujlwm tib yam nkaus. Lub teeb laser tawm los ntawm lub laser yog teeb meem ntawm cov kab mob ntawm cov kab mob ntawm cov kab mob ntawm cov kab mob hauv nruab nrab ntawm cov kab ntawv nruab nrab ntawm cov kab ntawv nruab nrab ntawm cov kab ntawv nruab nrab ntawm cov kab ntawv nruab nrab ntawm cov xov tooj lub siab yam glif. Cov ntaub ntawv, lub teeb liab tau tshwm sim los ntawm kev sib tshuam ntawm synchronizer 9 cov oscillators, thiab tom qab ntawd ntxiv rau lub tshuab qhib suab paj nruag ntawm lub tshuab synthesizer thiab lub hwjchim hloov mus hloov cov teeb meem ntawm cov teeb meem ntawm lub iav. Cov nqaj hlau tsoo yog teeb meem ntawm daim iav polygon, thiab tom qab ntawd ces tus nqaj tsom ncaj qha los ntawm qhov dav-tsom tsom iav thiab tom qab ntawd qhov xwm txheej ntawm lub tshuab luam yeeb (toner), ces qhov kev tshaj tawm ntawm qhov ua tiav yuav yog ib txoj kab tawm hauv xov tooj, thiab tag nrho cov txheej txheem scanning tiav.
Qhov npoo ntawm toner cartridge yog thawj zaug them los ntawm tus nqi them nyiaj kom tau ib qho peev xwm. Tom qab ntawd, tom qab kis ntawm cov kab teeb laser nqa cov duab qhia tawm, ib qho duab uas siv latent duab ntxoov ntxoo los ua rau ntawm lub toner cartridge, thiab cov duab latent yuav txia mus ua ib qho duab magnetic tsim los ntawm tus tsim twj. Tus duab toner pom yog xa mus rau hauv daim ntawv dawb hauv qab lub tshuab hluav taws xob thaum lub sij hawm dhau los ntawm kev hloov chaw, thiab thaum kawg tsau los ntawm cov phaj preheating thiab kub kub yob, uas yog, yaj ntawm daim ntawv. Cov ntawv nyeem thiab cov duab. Ua ntej luam tawm cov duab qhia, cov tub ntxhais yuav tsum tshem tawm cov roj toner, thiab lub teeb taws ua kom tshem tus nqi hluav taws xob ntawm tus nruas, thiab tom qab ntawd mam li ntxuav cov ntawv tu tsev kom nkag mus ua haujlwm tshiab.
keeb kwm
Laser cov ntawv tau tsim los ntawm Xerox thaum xyoo 1960 los siv electro-photo-graphy. Cov tshuab siv hluav taws xob laser los luam ib lub teeb nruas, thiab tswj kev qhib thiab kaw qhov teeb meem ntawm laser, lub teeb pom kev yog sucked thiab tsis sucked, thiab lub teeb nruas hloov cov adsorbed toner rau daim ntawv tsim ib qhov kev luam tawm. Tag nrho cov txheej txheem luam ntawv ntawm lub tshuab luam ntawv laser tau muab faib ua ib qho kev tswj theem, ib qho ntxoov ntxoo duab, thiab hloov mus rau theem.
Laser cov luam ntawv muaj qhov zoo ntawm qhov teeb meem ntawm cov ntawv teev ntim tshuab luam ntawv thiab inkjet ntawv. (1) High density. Laser cov luam ntawv muaj cov ntawv luam tawm tsawg li 300dpi thiab siab txog 400dpi, 600dpi, 800dpi, 1200dpi, thiab 2400dpi thiab 4800dpi. (2) Kev kub ceev. Laser cov printers sau tsawg kawg ntawm 4ppm, feem ntau yog 12ppm thiab 16ppm. Qee cov tshuab luam ntawv muaj peev xwm luam tawm tau ceev tshaj li ntawm 24 teev tav su. (3) Tsawg suab. Feem ntau hauv qab 53dB, nws yog qhov zoo rau kev siv rau hauv qhov chaw ua hauj lwm ntsiag to. (4) Muaj peev xwm ua kom muaj zog. Tus maub los ntawm lub tshuab luam ntawv laser muaj CPU, muaj lub cim xeeb, thiab cov maub los yog sib npaug rau lub motherboard ntawm lub computer, yog li nws tuaj yeem ua tau lo lus nyuaj, cov duab ua, thiab ua tiav nrawm, uas tsis tuaj yeem ua tiav los ntawm cov ntawv sau xa khoom nruab nrab thiab lub inkjet lub tshuab luam ntawv. Qhov sib txawv ntawm ib phab ntawv luam ntawv thiab kab ntawv txuas.
Lub tshuab luam ntawv laser luam ntawv zoo nkauj thiab cov duab kos li cas? Qhov tseeb, cov txheej txheem luam ntawv ntawm laser printers thiab photocopiers yeej yog tib yam. Qhov txawv yog tias cov laser printers, cov dluab yog ua ntej ua ntej qhov kev txiav luam tawm qhov chaw. Ua ntej, lub computer hloov cov ntsiab lus uas yuav tsum luam tawm mus rau hauv ib lub chaws uas lub computer nkag siab, thiab tom qab ntawd xa cov cai mus rau lub tshuab luam ntawv. Nyob rau lub sij hawm no, lub tshuab luam ntawv lus ces txiav txim siab rau cov cai rau hauv ib qho qauv teev ntav - qhov kev txiav txim no yog qhov tseem ceeb heev. Dot matrix qauv uas ua los ntawm tus nplaig tshuab luam ntawv zoo heev yog raws nraim tib yam li tus qauv ntawm qhov screen zaub. Qhov kev sib nkag siab no yog lub tshuab luam ntawv laser tau ua raws li "Yam Koj Saib Yog Dab Tsi". Dippered dot pattern yog xa mus rau lub laser generator, thiab lub laser generator ceev nrooj react rau qhib thiab kaw raws li cov ntsiab lus ntawm tus qauv, projecting laser beam mus rau lub dav nruas rotum, thiab lub plhaub ntawm lub nruas yog irradiated los ntawm laser. Lub zos cov nqi them tawm, thiab cov chaw uas qhov laser tsis illuminated tseem nqa nyiaj.
Piv txwv, yog tias muaj qhov teev nyob rau hauv kab thib peb thiab thib peb sab hauv lub bitmap generated los ntawm lub tshuab luam ntawv, tus so yog dawb, ces tus laser generator emits tsuas yog ib lub laser ntawm txoj hauj lwm no. Nyob rau lub nruas induction, lub laser generators nyob twj ywm rau hauv cov seem seem. Nyob rau lub sij hawm no, lub pob zeb ntawm qhov kev tawm ntawm qhov induction tau tsuas yog kis ntawm tus kab thib peb thiab zaum peb sab uas tsis tau them nqi, thiab so tshuav nqi. Lub sijhawm no, lub tshuab luam ntawv laser muaj ob txoj kev kho: 1. Tsuas yog xim no. Tus so tsis yog kob (dub nciab yog ua rau dawb); 2. Tsuas yog cov xim xwb, thiab cov dots tsis yog kob (xim dub nciab). Thawj hom kev ua yog hu ua "sau dub" thiab hom thib ob ntawm kev ua yog hu ua "sau dawb". Obviously, yog hais tias nyob rau hauv qhov kev piv txwv no peb xav sau cov dub teeb rau hauv txoj kev dawb, ces peb yuav tsum cia lub laser ci los ntawm txhua qhov chaw tsuas yog lub taw tes rau ntawm lub pob zeb (nco ntsoov tias lub laser tsuas yog tawm, tsis them them Yog li no, vim tias qhov teeb meem laser yuav tsum taws txhua thaj chaw tshwj tsis yog qhov no, nws yuav siv sij hawm ntau heev rau lub tshuab luam ntawv mus rau lwm qhov. Nyob rau ntau qhov chaw, lub tshuab luam ntawv yuav tsum luam tawm tsawg kawg yog ib feem peb ntawm nplooj ntawv tag nrho, yog li feem ntau cov tshuab luam ntawv laser niaj hnub siv dub thiab dawb printing kom txo tau lub laser scanning lub sijhawm.
Kev ua haujlwm
Ntawm chav kawm, tag nrho cov txheej txheem luam ntawv ntawm lub tshuab luam ntawv laser tsis tsuas yog muaj cov tshuab hluav taws xob thiab cov yeeb nkab induction, tiam sis ntau lwm yam kuj tau koom tes nrog cov txheej txheem luam ntawv.
(1) Lub tshuab luam ntawv tshuab luam ntawv: Lub tshuab luam ntawv tswj xyuas lub luag hauj lwm yog lub luag hauj lwm kom tau txais cov ntaub ntawv luam tawm ntawm tus tswv tsev thiab hloov cov ntaub ntawv rau hauv cov duab. Lub tshuab luam ntawv lub tshuab luam ntawv yuav tsum tau ua ntau yam kev pab cuam, nrog rau kev sib txuas lus nrog tus tswv tsev, txhais cov tswv tsev cov ntawv luam, sau cov ntawv luam tawm (piv txwv li npaj kom tsim tau cov duab, nrog rau qhov chaw loj, sab ntawv, xaiv cov ntawv sau, thiab lwm yam) rasterizing (tsim cov duab bitmap)), thiab thaum kawg xa cov duab rau ntawm qhov tshuab luam ntawv. Txawv lub tshuab luam ntawv txawv txawv qhov sib txawv rau cov maub los, thiab txawv tuam tsev siv ntau txoj kev los tsim lawv cov tshuab luam ntawv sib tw.
(2) Cov khoom ntaus ntawv: Lub tshuab luam ntawv yog ib qho khoom siv hluav taws xob thiab tshuab hluav taws xob uas tuaj yeem sau cov qauv teev los ntawm lub tshuab luam ntawv. Lub tshuab luam ntawv muaj nws tus kheej processor rau tswj lub cav thiab circuitry. Feem ntau, lub tshuab luam ntawv yog tsim los ntawm ib lub tshuab ua kom lub laser, ib lub tshuab xaum qhuav, ib qho khoom siv roj toner, ib qho twj siv hluav taws xob, ib qho kev sib txuas ntawm cov hlau electrostatic, ib qho khoom sib txuas, ib daim ntawv siv hluav taws xob, ib daim ntawv pub, thiab ntawv tawm phom.
Laser scanning devices, tej zaum kuj hu ua "grating output scanning devices (ROS)", muaj xws li lub tshuab hluav taws xob, lub iav rotating, thiab lub lens. Lub laser generator projects laser mus rau tag nrho cov ntsiab lus ntawm lub pob zeb ntawm lub nruas uas yuav tsum tau muab luam tawm, thiab nyob twj ywm tawm qhov chaw uas nws tsis tas yuav sau (cov lus tseeb yog muaj tseeb rau cov tshuab luam ntawv dawb). Lub laser generator nws tus kheej yog tsau, thiab lub teeb laser kis tau los ntawm ib lub rotating iav los ua rau ib sab ntawm lub laser rau ntawm lub tsawv ntawm lub tswb. Lub laser generator thiab cov iav uas yuav tsum tau tsim yuav tsum tau tsim kom muaj tseeb tias lawv ua hauj lwm hauv sync thiab yog qhov project laser rau qhov tseeb taw tes. Lub qhov ntev ntawm lub laser ntawm lub luaj ntawm qhov cov cua ntswj induction yog tiav los ntawm txoj kev sib hloov ntawm qhov induction nruas nws tus kheej.
Qhov rhuav tshem qhov muag kuj tseem hu ua "receiver" lossis ncaj qha hu ua "drum". Lub nruas induction yog feem ntau cylindrical thiab lub saum npoo yog heev yooj yim. Nws qhov chaw yuav tsum tau electrostatically them, thiab no hluav taws xob hluav taws xob tso tawm thaum nws ntsib zog muaj zog. Ua ntej lub laser kov, lub nruas ntawm lub nruas yog uniformly them los ntawm cov tub ntxhais ntawm electrostatic. Thaum lub teeb meem laser yog cia siab rau ib qho taw tes rau ntawm qhov chaw ntawm lub nruas, qhov hluav taws xob zoo ntawm qhov taw tes yog tso tawm, yog li ntawd qhov uas tsis tau ntim lub npoo tsim tawm ntawm lub pob zeb. taw tes. Lub nruas tig rov qab rau ntawm ib qho kev qeeb tab sis kiag li qhov ceev, ua kom lub laser tsim ib nruam, tsis muaj qhov ntev ntawm qhov ntev ntawm qhov ntev ntawm lub nruas. Yog li, lub sab nraud txav ntawm lub iav uas tig los thiab qhov ntev ntawm txoj kev txav ntawm lub tswm ciab ua rau lub laser "sau" pom ib qho tsis pom zoo, tsis muaj duab zoo li ntawm lub nruas.
Toner cartridge yog ib qho khoom siv rau kev tuav pov hwm. Qee cov tshuab luam ntawv muaj cov cartridges uas txuas nrog rau lub nruas qhov muag thiab hu ua "sibtham luam ntawv." Toner yog tsim los ntawm ntau tshwj xeeb hluavtaws yas charcoal thiab hlau oxide. Cov khoom siv toner yog tov, khwv yaj, plhav heev, thiab tom qab ntawd ua rau cov khoom me me me heev. Cov khoom siv thiab ua ntau tshaj qhov toner, cov ncauj lus kom ntxaws tshaj qhov duab. Ntawm tag nrho cov hom toner, HP's Microfine toner particle yog 20% rau 50% me dua lwm hom, thiab yog li ntawd txaus siab rau lub koob npe nrov hauv kev lag luam.
Tus ntaus ntawv yog ua ib tug menyuam nrog cov khoom sib nqus. Cov kev sib nqus ntawm cov hlau nplaum sib koom ua ke rau ntawm cov hlau, zoo li "zoo txhuam." Lub hau zoo li abutted nrog cov nruas induction thiab toner cartridge feem. Thaum cov menyuam yob khau, qhov me me ntawm cov nplais ntawm cov menyuam yaus yog "brushed" los ntawm toner cartridge mus rau ib txheej txheej ntawm toner, thiab tom qab ntawd ces lub toner kis tau los ntawm qhov kev tawm qhov rais. Nws yog ces adsorbed mus rau saum npoo ntawm induction nruas. Kev tsim cov cuab yeej rau kev sau ib lub tshuab luam ntawv dub muaj nuj nqi uas them tus nqi hluav taws xob, vim tias lub toner yuav tsum tau adsorbed tsuas yog los ntawm feem ntawm qhov chaw ntawm lub nruas uas tsis yog electrostatically nqi (xws li, qhov chaw ntawm lub laser), cov pa roj carbon dioxide yuav tsum yog. Cov hmoov yog tus nqi (rau ib lub tshuab luam ntawv dawb, cov txheej txheem yog qhov tseeb). Nyob rau lub sij hawm no, lub nplaim ntawm lub nruas yog adsorbed nrog toner, uas cov ntaub ntawv tsis tshua meej duab. Cov kauj ruam tom ntej yog muab cov duab xa mus rau daim ntawv.
Ntawv Conveyor Daim ntawv xa khoom siv yog qhov tseem ceeb tshaj plaws ntawm txhua yam khoom siv rau cov tshuab luam ntawv laser. Qhov cuab yeej no hloov tsheb ntawm ob txoj hauv kev tsav tsheb. Daim ntawv pib nrog tus pub rau noj, kis tau los ntawm qhov qhia tawm qhov muag, cov cua kub rau menyuam, thiab lwm yam, thiab thaum kawg xa tawm ntawm lub tshuab luam ntawv. Dov khoom hauv laser printers, xws li cov nruas, cov hlau nplaum thiab daim ntawv pub rollers, yuav tsum tau synchronized, thiab lawv ceev yuav tsum zoo ib yam kom meej meej luam tawm. Feem ntau, cov chais no yog nyob rau ntawm daim ntawv pub khoom noj thiab tig rau tib qhov ceev ceev ntawm meshing zog.
Thaum lub cuab yeej ua ke sib kis tau los ntawm txoj kab nruas induction los ntawm cov khoom siv thauj khoom, cov pa roj carbon ntawm cov kua uas ua rau lub nruas tawm yog adsorbed rau ntawm daim ntawv. Lub sij hawm no, txawm hais tias cov nplais ntawm daim ntawv yog tsim los ntawm lub toner, lub adsorption ntawm toner ntawm daim ntawv no Tsis heev zog, cua ntsawj me ntsis tuaj yeem tshuab cov toner tawm ntawm daim ntawv. Hauv kev txiav txim siab rau toner kom ua raws nraim mus rau ntawm daim ntawv, lub toner yuav tsum tau muab tso ua ke. Peb paub tias raw khoom ntawm toner yog hluavtaws yas char, uas yuav tsum melted ntawm kev kub muaj peevxwm. Cov yaj ua kom muaj zog dua tuaj yeem ua kom tiav thiab tuaj yeem ua raws nraim rau ntawm daim ntawv. Sab hauv lub tshuab luam ntawv laser, muaj ob lub thawv kub uas ze ze ua ke, thiab lawv muaj nuj nqi yog ua kom sov daim ntawv hla ntawm lawv. Lub toner yog yaj kom sib haum mus rau ntawm daim ntawv. Cov ntawv ntsuas rhaub yog thaum kawg tso rau lub tshuab luam ntawv cov ntawv tso tawm ntawv, uas taw tes rau tag nrho cov txheej txheem luam ntawv xaus.