Bar code hauv kev lag luam luam
Peb yog ib lub lag luam loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv nyuaj, 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 tuaj xyuas
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Txawm tias peb mus qhov twg, peb yuav pom daim npav dej, uas feem ntau tshwm rau cov pob khoom me me hauv khw muag khoom, tsev kho mob lossis tsev qiv ntawv. Yog vim li cas thiaj pom tseeb: txoj cai barcodes yog txoj kev txhim kho thiab txhim kho cov khoom siv hluav taws xob hluav taws xob.
Muaj ntau ntau hom barcodes lossis cim rau ntau lub hom phiaj. Rau cov khoom muag khoom, EAN code (Barcode symbol system UPc / EAN-general product code / drink item number) hom EAN13, EAN8 thiab EAN128 yog nquag siv, thiab cov chaw kho mob (chaw kuaj mob lossis tsev kho mob), Codabar feem ntau pom. Hauv ntau lub lag luam, Code39 tau tsim, hloov tsib-thiab-ob-code thiab 128-cim systems.
Barcodes yog ib seem, ob sab, thiab qee zaum peb sab; feem ntau cov cai ib-seem. Hauv ib qhov barcode ib zaug, tag nrho cov ntaub ntawv yog nyob rau hauv X-axis xwv kom lawv tuaj yeem nyeem nrog ib qho yooj yim nyeem ntawv (nyeem ntawv cwj mem, nyeem ntawv los sis nyeem). One-dimensional barcodes muaj xws li hloov tsib-thiab-ob tus zauv, Code39, EAN8, thiab EAN13, nrog rau Codabar thiab Code128. Xaiv tsib cim thiab ob lub cim yog ib lub cim digital code cim qhov system. Cim yog encoded nyob rau hauv ob leeg, nrog tuav sawv thawj tus cim thiab tej qhov chaw sawv cev tus cim thib ob. Code39 tsuas yog sau cov tsiaj ntawv loj, zauv, thiab xya cim tshwj xeeb, thaum Code128 yog ib daim ntawv teev npe tag nrho. Muab piv rau Code39, Code128 yuav tsum muaj chaw seem tsawg dua rau tib cov ntaub ntawv. Txhua qhov chaws teev muaj nws cov lus qhia tshwj xeeb uas qhia cov cim cov cim thiab cov ntawv ntaus ntawv nyeem li cas thiab yuav ua li cas rau cov cim cov cim. Ntxiv mus, yuav tsum muaj thaj tsam zoo li qub ua ntej thawj zaug thiab tom qab lub xyoo dhau los kom paub tias lub tshuab ntaus ntawv tuaj yeem ntes pib thiab xaus rau ntawm qhov chaws.
Cov lag luam luam ntawv siv tau cov tshuab luam ntawv (cov offset, lithographic, gravure los yog silk screen), cov ntawv luam tawm (digital offset printing, inline inkjet printing los yog inline ion deposition), nrog cov khoom siv digital printing tshuab luam ntawv (ib daim ntawv pub rau laser printers los yog Inkjet printers ) sau cov ntawv barcodes.
Nyob rau hauv bar code luam ntawv, yuav tsum ua kom tau ua ntej. Cov txheej txheem no yog nyob rau hauv cov kev cai ntawm kev siv bar codes, uas tau raug coj mus rau hauv tus account nyob rau hauv kev npaj ntawm cov xim bar. Lub tshuab luam ntawv yuav tsum txiav txim siab yam tsawg kawg nkaus raws li cov ntawv sau los ntawm qhov kev sib tw los sis cov ntawv luam tawm, cov xim / cov khoom sib txawv, thiab qhov kev taw qhia ntawm lub cim ntawm cov ntawv luam tawm. EAN13 code yog tus qauv rau kev kos cov phau ntawv thiab cov caij nyoog. Nws yog ib qho code uas muaj peev xwm tshaj tawm cov zauv 0-9. EAN code tuaj yeem luam tawm ntawm cov dav sib txawv, tab sis lub cim EAN13 yog nyob ntawm lub cim qhov siab (nrog rau cov ntawv nyeem) 25.93mm (1.02in) thiab lub hom phiaj X Dimension 0.33 hli (0.13in) raws li lub cim qhov dav thiab qhov siab ( 100% magnification) Muaj kev sib raug zoo ntawm lawv. Daim duab magnification ntawm EAN ntawm SC screen (lub sij hawm sab nrawm yog siv los qhia tias muaj ntau qhov kev qhia hauv qab los yog siab tshaj qhov kev nqis peev uas tau teev tseg los ntawm lub omnidirectional scanning environment) tsuas yog siv nrog qhov daws teebmeem rau SC screen. Tus nqi yog tau txais rau 150dpi, 300dpi lossis 600dpi ntawv. Xwb, txawm tias EAN tuaj yeem luam tawm ntawm lub tshuab luam ntawv 203dpi thiab feem ntau cov tshuab luam yeeb ntawm lub tshuab luam ntawv muaj peev xwm txhais tau, qhov chaws no yog siab tshaj tus txheej txheem thiab tsis tau lees tias tag nrho cov luam yeeb yuav nyeem tau nws.
Txij li thaum tag nrho cov bar codes muaj tsawg heev ntawm cov pas tuav thiab chaw, dub kab txaij thiab dawb qhov chaw yog siv los ua zoo tshaj plaws. Tab sis lwm cov xim ua ke kuj tsim cov kev soj ntsuam zoo, feem ntau cov kev siv luam yeeb siv lub teeb liab, tshwj rau "liab" rau qhov bar. (Liab barcodes tuaj yeem raug txiav seev cev siv lub tshuab xiav lub teeb).
Txoj cai ob-dimensional yog ib txoj hauv kev uas muab cov lus qhia tsis yog rau X-axis, tiam sis tseem nyob rau Y-axis. Feem ntau, qhov no txhais tau hais tias ob txoj cai Code 39 muab luam tawm ntawm ib txheej thiab sib txuas rau ib leeg. Qhov no yuav txuag tau qhov chaw tshwj xeeb los ntawm kev siv ob txoj kev cai. Thawj thawj ob txoj kab npe hu ua Code49 tau txais los ntawm 1989. Txij thaum ntawd los, txog 6 yam ntawm lwm cov cai tau tsim los yog rov tsim kho cov ntaub ntawv kom tsawg li tsawg tau. Nyob rau hauv qhov chaw. Thawj thawj ob-qhov chaws, xws li Code49, Codabar, los Code16k, zoo ib yam li ib txoj cai ib sab thiab yog li ntawd hu ua cascading symbology lossis ntau txoj kab ntawm cov cai. Cov ntaub ntawv yog encoded nyob rau hauv ib tug series ntawm kab txaij thiab qhov chaw ntawm widths sib txawv.
Nyob hauv daim duab thij duab ob sab, cov kab txaij ploj. Lawv encode cov ntaub ntawv raws li txoj hauj lwm ntawm cov dub taw tes rau hauv daim phiaj siv nyiaj. Nrog lawv cov voj voos uas muaj high-density, lawv ua kom tau raws li cov kev xav tau ntawm cov kev tu lim dej thiab cov khoom siv khomob hauv electronics, raws li cov chaw nyob ntawm qhov chaw ntsuas dawb ntawm qhov chaw nruab nrab ntawm lub chaw txuas nrog thiab cov ntawv cog lus Circuit Board yog scarce.
Tam sim no, muaj ntau tshaj 20 qhov 2D 2D codes, xws li 3-DI, Array-TAG, Aztec Code, Code 1, CP Code, Data-Glyphs, QQR-Code, SuperCode, Snowflake Code, Cov Ntaub Ntawv Npe, Maxi; , los yog PDF417. Cov ntawv xov xwm (Portable Data File) (PDF) 417 pib nrog kev tswj cov ntawv yas, daim npav ID, daim ntawv tsav tsheb thiab txawm hloov rau nyiaj muas noj, thaum Maxi Code siv tau rau cov kev nrhiav nyiaj thiab cov kev pabcuam. Cov txiaj ntsim ntawm txoj kev 2D code yog tias txawm tias 50% ntawm cov cai yog corrupted, cov ntaub ntawv tseem muaj nyob. Qhov kev sim ntawm qhov chaws hu ua "Reed Soloman Error Correction". Qhov kev xeem no tau tsim los ntawm Reed Solomon rau kev siv cov ntaub ntawv los ntawm NASA (National Aeronautics thiab Space Administration) vim tias cov ntaub ntawv tsuas yog poob thaum kis ntawm qhov chaw thiab tsuas yog hloov dua tshiab los ntawm kev ua yuam kev yuam kev algorithms. Pom tau.
Txoj cai ntawm peb-seem, qhov txawv xim code, tsis tau txiav txim siab. Txuas ntxiv, ntxiv nrog rau X thiab Y qhov ntev, peb muaj ib daim duab peb sab ntawm cov ntaub ntawv raws li siv cov xim raws li cov ntaub ntawv thib peb. Yog li ntawd, Xim Ultracode, tsim los ntawm Zebra Technologies nyob rau hauv 1997, yog ib txoj cai muaj peb-seem. Txoj cai suav nrog cov naj npawb thiab alphanumeric hom raws li kev hais lus / kev cai sab nrauv thiab xaiv yeem Reed Solomon yuam kev. Txhawb dub / dawb thiab siab ceev xim versions. Qhov nthuav dav tshaj plaws yog tias nws tuaj yeem encode tsis yog cov tsiaj ntawv Latin xwb, tab sis tseem Lavxias, Suav thiab lus Japanese.