Ua haujlwm puv hauv chav haujlwm yog tsis yooj yim sua yam tsis muaj duab cav. Cov khoom siv khoos phis tawm no nyuaj los hloov, yog li koj yuav tsum xaiv nws kom zoo. Muaj ntau cov qauv hauv cov khw. Yuav cov scanner uas zoo tshaj plaws rau koj cov kev xav tau.
Cov Lus Qhia
Kauj ruam 1
Ua ntej koj yuav tsum txiav txim siab txog hom scanner. Peb hom tseem ceeb tuaj yeem sib txawv, txawv ntawm txhua lwm yam hauv cov qauv tsim. Feem ntau feem ntau, ib lub vuag looj vij plav yog xaj xaj rau lub chaw ua haujlwm. Cov ntawv txheeb lossis phau ntawv muab tso rau ntawm lub khob thaub qab ntawm lub cuab yeej. Tus thawj ntawv tsis txav thaum lub sij hawm luam.
Kauj ruam 2
Broaching scanner tsis haum rau kev ua haujlwm nrog cov phau ntawv. Nws muaj peev xwm luam theej duab ib leeg ib daig ntawm daim ntawv. Sab nraud, cov cuab yeej zoo li ntawv luam tawm. Cov ntaub ntawv los ntawm daim ntawv yog pauv mus rau lub khoos phis tawj los ntawm kev khawb cov duab scanned.
Kauj ruam 3
Kuj tseem muaj cov nplais hluav taws xob ntawm kev muag khoom. Lub ntsiab ntawm cov cuab yeej no yog txhawm rau thaij cov yeeb yaj kiab (swb) thiab txuag cov duab ncaj qha rau hauv computer. Thov nco ntsoov tias qee cov qauv ntawm cov vij twm flatbed muaj cov kab xaum hloov ua lwm yam. Cov qauv tsim yuav tsum tau kuaj nrog tus neeg muag khoom.
Kauj ruam 4
Tau txiav txim siab ntawm hom ntsuas scanner, nws tsim nyog txav mus xaiv hom ntsuas lub ntsuas cua. Lawv yog ob hom: ib daim duab tiv tauj lub koob yees duab (CIS lossis, yog tias txiav txim siab, Hu rau Image Sensor) thiab lub txim siv txuas nrog (CCD lossis Charge-Coupled Device).
Kauj ruam 5
Lub scanner, nrog CIS sensor nruab, muaj tus qauv tsim qauv ncaj ncees. Cov txheej txheem no yog qhov me heev thiab sib. Yog tias peb tham txog tus nqi, tom qab ntawd nws tseem qis dua lwm cov scanners. Ntawm qhov tsis sib xws, peb tuaj yeem hais txog qhov tob tob hauv daim teb. Thaum luam theej tau phau ntawv lossis cov ntaub ntawv ntsws, cov duab zoo yuav ntog. Nws ua qhov muag plooj thiab plooj me ntsis, uas tsim kev tsis xis nyob thaum nyeem daim ntawv.
Kauj ruam 6
Lub scanner nrog CCD sensor muaj cov xim zoo nkauj thiab kev sib txig sib luag ntawm daim teb. Txhua cov ntaub ntawv tuaj yeem luam tawm ntawm cov khoom siv zoo li no, txij li lub cim pom pom cov duab thiab kis nrog nws kom pom tseeb. Kev soj ntsuam thev naus laus zis ua raws li CCD. Qhov tsis zoo ntawm cov cuab yeej no suav nrog kev hnyav, tuab thiab tus nqi siab.
Kauj Ruam 7
Yog li, txhua yam yog yooj yim. Yog tias qhov zoo yog qhov tseem ceeb rau koj, xaiv CCD, yog tias koj xav txuag nyiaj, yuav lub scanner nrog lub CIS sensor. Ua tib zoo saib xyuas lub tshuab txau ntim khoom noj. Nws yog qhov tsim nyog thaum soj ntsuam cov ntaub ntawv ntau. Cov yeeb yam no muaj nyob rau ntawm ob lub tiaj thiab pub pub mis.
Kauj ruam 8
Xav txog seb koj lub tuam txhab puas yuav zoo dua ntawm kev yuav khoom lub hom phiaj dav dav. Cov cuab yeej zoo li no tuaj yeem nruab nrog tus swb txuas. Tab sis ib qho adapter yuav tsis tas li yog qhov kev xaiv zoo tshaj plaws. Yog tias koj xav tau cov duab zoo meej, nws yog qhov zoo dua los yuav cov nplais scanner cais.
Kauj Ruam 9
Thaum xaiv lub scanner, koj yuav tsum xav txog qhov siab ntawm daim ntawv loj tshaj plaws uas koj yuav tsum ua haujlwm. Rau cov kws tshaj lij kev soj ntsuam, yuav ib lub cuab yeej nrog tshaj 2000 DPI. Cov khoom siv thaij duab ib txwm muaj qhov daws teeb meem ntawm 600 txog 1200 DPI. Xyuam xim rau qhov tob xim. Rau kev ua haujlwm hauv chaw ua haujlwm, ib qho khoom siv 24-txaus yog qhov txaus.
Kauj ruam 10
Kuaj xyuas seb lub scanner txhawb qhov operating system nruab rau koj lub khoos phis tawm. Cov kab zig siv niaj hnub tuaj yeem ua haujlwm dhau ntawm USB cable. Yog tias cov ntsiab lus no tseem ceeb rau koj, nug txog cov yam ntxwv kev ntawm lub cuab yeej los ntawm tus muag khoom hauv kev nthuav dav.
