1 Tsarin ciki na firinta na laser
Tsarin ciki na firinta na laser ya ƙunshi manyan sassa huɗu, kamar yadda aka nuna a cikin hoto 2-13.
Hoto 2-13 Tsarin ciki na firinta na laser
(1) Naúrar Laser: tana fitar da katakon Laser tare da bayanan rubutu don fallasa ganga mai ɗaukar hoto.
(2) Rukunin Ciyar da Takarda: sarrafa takarda don shigar da firinta a lokacin da ya dace kuma fita daga firinta.
(3) Rukunin Haɓakawa: Rufe ɓangaren drum ɗin da aka fallasa da toner don samar da hoto wanda ido tsirara zai iya gani, sannan a canza shi zuwa saman takarda.
(4) Ƙaddamarwa Unit: Toner da ke rufe saman takarda yana narke kuma yana da tabbaci akan takarda ta amfani da matsa lamba da dumama.
2 Ka'idar aiki na firinta laser
Na’urar firintar Laser ita ce na’urar fitarwa da ke haɗa fasahar bincikar Laser da fasahar hoto ta lantarki.Firintocin Laser suna da ayyuka daban-daban saboda nau'ikan samfura daban-daban, amma tsarin aiki da ka'ida iri ɗaya ne.
Ɗaukar daidaitattun firintocin Laser na HP a matsayin misali, tsarin aiki shine kamar haka.
(1) Lokacin da mai amfani ya aika da umarnin bugawa zuwa na'urar ta hanyar tsarin aiki na kwamfuta, bayanan da za a buga za a fara canza su zuwa bayanan binary ta hanyar direban printer, sannan a aika zuwa babban allon sarrafawa.
(2) Babban allon sarrafawa yana karɓa da fassara bayanan binary ɗin da direba ya aika, daidaita shi zuwa katako na laser, kuma yana sarrafa sashin laser don fitar da haske bisa ga wannan bayanin.A lokaci guda, saman drum mai ɗaukar hoto yana caji ta na'urar caji.Sa'an nan Laser katako mai hoto bayanai aka samar da Laser scanning part don fallasa da photosensitive drum.Hoton latent na lantarki yana samuwa akan saman drum toner bayan fallasa.
(3) Bayan harsashin toner yana cikin hulɗa tare da tsarin haɓakawa, hoton ɓoye ya zama zane mai gani.Lokacin wucewa ta hanyar tsarin canja wuri, ana canja wurin toner zuwa takarda a ƙarƙashin aikin filin lantarki na na'urar canja wuri.
(4) Bayan an gama canja wurin, takardar ta tuntubi sawtooth mai ba da wutar lantarki, kuma ta fitar da cajin akan takardar zuwa ƙasa.A ƙarshe, yana shiga tsarin daidaitawa mai zafi, kuma zane-zane da rubutu da aka kafa ta hanyar toner an haɗa su cikin takarda.
(5) Bayan an buga bayanan hoto, na'urar tsaftacewa tana cire toner ɗin da ba a canjawa ba, kuma ya shiga zagaye na gaba na aiki.
Duk matakan aiki na sama suna buƙatar tafiya ta matakai bakwai: caji, fallasa, haɓakawa, canja wuri, kawar da wutar lantarki, gyarawa, da tsaftacewa.
1>.Caji
Don sanya drum mai ɗaukar hoto ya sha toner bisa ga bayanan hoto, dole ne a fara cajin drum ɗin mai ɗaukar hoto.
A halin yanzu akwai hanyoyin caji guda biyu na na'urorin bugawa a kasuwa, daya na corona caji, ɗayan kuma yana cajin abin na'ura, dukkansu suna da halayensu.
Korona caji hanya ce ta caji kaikaice wacce ke amfani da abin da ake amfani da shi na drum na hotuna a matsayin electrode, kuma ana sanya wayan ƙarfe siriri sosai kusa da ganga mai ɗaukar hoto kamar sauran electrode.Lokacin yin kwafi ko bugu, ana amfani da wutar lantarki mai ƙarfi sosai a kan wayar, kuma sararin da ke kewaye da wayar yana samar da filin lantarki mai ƙarfi.Ƙarƙashin aikin filin lantarki, ions tare da polarity iri ɗaya kamar yadda waya ta corona ke gudana zuwa saman drum na hotuna.Tunda mai daukar hoto a saman drum na hotuna yana da tsayin daka sosai a cikin duhu, cajin ba zai gudana ba, don haka yuwuwar tasirin drum na hotuna zai ci gaba da tashi.Lokacin da yuwuwar ta haura zuwa mafi girman yuwuwar yarda, tsarin caji ya ƙare.Rashin lahani na wannan hanyar caji shine cewa yana da sauƙi don samar da radiation da ozone.
Cajin abin nadi hanya ce ta cajin lamba, wanda baya buƙatar babban cajin wutar lantarki kuma yana da kusancin muhalli.Saboda haka, yawancin firintocin laser suna amfani da na'urorin caji don caji.
Bari mu ɗauki cajin abin nadi na caji a matsayin misali don fahimtar dukkan tsarin aiki na firinta na Laser.
Na farko, ɓangaren da'ira mai ƙarfi yana haifar da babban ƙarfin lantarki, wanda ke cajin saman drum ɗin hotuna tare da daidaitaccen wutar lantarki mara kyau ta bangaren caji.Bayan drum mai ɗaukar hoto da abin nadi na caji suna jujjuya daidai gwargwado don sake zagayowar ɗaya, ana caje duk fuskar ganga mai ɗaukar hoto da caji mara kyau, kamar yadda aka nuna a hoto 2-14.
Hoto 2-14 Tsarin tsari na caji
2>.bayyana
Ana yin fallasa a kusa da drum mai ɗaukar hoto, wanda aka fallasa tare da katako na Laser.Fuskar drum na photosensitive Layer na photosensitive Layer, da photosensitive Layer rufe saman da aluminum alloy conductor, da aluminum alloy madugu a kasa.
Layer mai ɗaukar hoto abu ne mai ɗaukar hoto, wanda ke siffanta shi da kasancewa mai ɗaukar hoto lokacin da aka fallasa shi ga haske, da kuma rufewa kafin fallasa.Kafin bayyanar, ana cajin cajin uniform ta na'urar caji, kuma wurin da aka kunna bayan an kunna ta da Laser zai zama jagora da sauri tare da madubin alloy na aluminum, don haka cajin yana sakin ƙasa don samar da wurin rubutu akan. takardar bugawa.Wurin da Laser ba ya haskaka shi har yanzu yana riƙe da ainihin cajin, yana samar da sarari mara kyau akan takardar bugawa.Tunda wannan hoton halin ba ya ganuwa, ana kiransa hoton latent electrostatic.
Hakanan ana shigar da firikwensin siginar aiki tare a cikin na'urar daukar hotan takardu.Ayyukan wannan firikwensin shine don tabbatar da cewa nisa na dubawa ya daidaita ta yadda igiyar Laser da ke haskakawa a saman ganga mai ɗaukar hoto zai iya cimma mafi kyawun tasirin hoto.
Fitilar Laser tana fitar da katako na Laser tare da bayanan halayen, wanda ke haskakawa a kan jujjuyawar prism mai fuskoki da yawa, kuma prism mai haskakawa yana nuna katakon Laser zuwa saman ganga mai ɗaukar hoto ta hanyar rukunin ruwan tabarau, don haka yana duba ganga mai ɗaukar hoto a kwance.Babban motar tana korar drum ɗin mai ɗaukar hoto don ci gaba da juyawa don gane a tsaye na duban ganga mai ɗaukar hoto ta fitilar fitarwa ta Laser.An nuna ƙa'idar bayyanarwa a cikin hoto 2-15.
Hoto 2-15 Tsarin tsari na fallasa
3>.ci gaba
Haɓakawa shine tsarin yin amfani da ƙa'idar ƙin yarda da jima'i da sha'awar jima'i na cajin lantarki don juya hoton latent na lantarki wanda ba a iya gani a ido tsirara zuwa hotuna masu gani.Akwai na'urar maganadisu a tsakiyar abin na'urar maganadisu (wanda kuma ake kira Development Magnetic roller, ko Magnetic roller a takaice), kuma toner da ke cikin foda bin yana dauke da abubuwan maganadisu wadanda magnet din zai iya sha, don haka dole ne a ja hankalin toner. ta wurin maganadisu a tsakiyar nadirin maganadisu masu tasowa.
Lokacin da drum mai ɗaukar hoto ya juya zuwa matsayin da yake hulɗa da haɓakar abin nadi na maganadisu, ɓangaren saman drum na hoto wanda ba a haskaka shi ta hanyar laser yana da polarity iri ɗaya kamar toner, kuma ba zai sha toner ba;yayin da ɓangaren da ke haskakawa ta hanyar Laser yana da polarity iri ɗaya kamar na toner Akasin haka, bisa ga ka'idar kawar da jima'i da kuma jawo hankalin jima'i, toner yana tunawa a saman drum na hotuna inda laser ke haskakawa. , sa'an nan kuma an samar da zane-zane na toner na gani a saman, kamar yadda aka nuna a cikin hoto 2-16.
Hoto 2-16 Zane na ƙa'idar haɓakawa
4>.canja wurin bugu
Lokacin da aka canja wurin toner zuwa kusa da takarda na bugawa tare da drum na hotuna, akwai na'urar canja wuri a bayan takarda don amfani da canja wurin matsa lamba zuwa bayan takarda.Saboda irin ƙarfin lantarki na na'urar canja wuri ya fi ƙarfin wutar lantarki na wurin da ake nunawa na drum na hotuna, zane-zane, da rubutun da aka kafa ta hanyar toner ana canza su zuwa takarda ta bugawa a ƙarƙashin aikin filin lantarki na na'urar caji, kamar yadda aka nuna. a cikin Hoto 2-17.Zane-zane da rubutu suna bayyana a saman takardan bugawa, kamar yadda aka nuna a hoto na 2-18.
Hoto 2-17 Tsarin tsari na buga canja wuri (1)
Hoto 2-18 Tsarin tsari na bugu na canja wuri (2)
5>.Watse wutar lantarki
Lokacin da aka canja wurin hoton toner zuwa takarda, toner kawai yana rufe saman takarda, kuma tsarin hoton da aka kafa ta hanyar toner yana da sauƙi a lalata yayin aikin aikawa da takarda.Don tabbatar da ingancin hoton toner kafin gyarawa, bayan canja wurin, zai wuce ta na'urar kawar da a tsaye.Ayyukansa shine kawar da polarity, kawar da duk cajin da kuma sanya takarda ta zama tsaka tsaki don takarda ta iya shigar da sashin gyarawa da kyau kuma tabbatar da buguwar fitarwa ingancin samfurin, an nuna shi a cikin Hoto 2-19.
Hoto 2-19 Tsarin tsari na kawar da wutar lantarki
6>.gyarawa
Dumama da gyare-gyare shine tsarin yin amfani da matsa lamba da dumama zuwa hoton toner da aka tallata akan takarda don narkar da toner da nutsar da shi a cikin takardar bugawa don samar da ingantaccen hoto a saman takardar.
Babban bangaren toner shine guduro, wurin narkewa na toner shine kusan 100°C, kuma zazzabi na dumama abin nadi na kayyade naúrar ne game da 180°C.
A lokacin aikin bugu, lokacin da zafin jiki na fuser ya kai zafin da aka riga aka kayyade na kusan 180°C lokacin da takarda da ke ɗaukar toner ta wuce ta rata tsakanin abin nadi mai dumama (wanda kuma aka sani da abin nadi na sama) da abin nadi na roba (wanda aka fi sani da matsa lamba ƙananan abin nadi, ƙaramin abin nadi), za a kammala aikin fusing.Babban zafin jiki da aka samar yana zafi da toner, wanda ke narkar da toner akan takarda, don haka samar da hoto mai mahimmanci da rubutu, kamar yadda aka nuna a cikin hoto 2-20.
Hoto 2-20 Tsarin ƙa'idar gyarawa
Saboda yanayin abin nadi na dumama yana da rufin da ba shi da sauƙi don manne wa toner, toner ba zai tsaya a saman abin nadi na dumama ba saboda yawan zafin jiki.Bayan gyare-gyare, an raba takardan bugawa daga dumama abin nadi ta hanyar katsewar rabuwa kuma an aika da shi daga firinta ta hanyar abin nadi na takarda takarda.
Tsarin tsaftacewa shine goge toner akan drum mai ɗaukar hoto wanda ba a canza shi daga saman takarda zuwa kwandon shara ba.
A yayin aiwatar da canja wurin, hoton toner akan drum na hotuna ba za a iya canja shi gaba ɗaya zuwa takarda ba.Idan ba a tsaftace shi ba, toner ɗin da ya rage a saman drum na hotuna za a ɗauka a cikin sake zagayowar bugu na gaba, yana lalata sabon hoton da aka ƙirƙira., don haka yana shafar ingancin bugawa.
Ana yin aikin tsaftacewa ta hanyar ƙwanƙwasa na roba, wanda aikinsa shine tsaftace ganga mai ɗaukar hoto kafin sake zagayowar bugu na hoto na gaba.Saboda ruwan goge goge na roba yana da juriya da sassauƙa, ruwan wukake yana samar da kusurwa mai yanke tare da saman ganga mai ɗaukar hoto.Lokacin da ganga mai ɗaukar hoto ya juya, toner ɗin da ke saman yana gogewa a cikin kwandon shara ta hanyar gogewa, kamar yadda aka nuna a hoto na 2-21 da aka nuna.
Hoto 2-21 Tsarin tsari na tsaftacewa
Lokacin aikawa: Fabrairu-20-2023