Tus kheej- cov ntawv nplaum muaj lub ntsej muag, txheej sab nraud uas ncaj qha nqa cov ntawv, duab, lossis barcodes. Lub ntsej muag txheej tuaj yeem ua los ntawm cov ntawv, yas zaj duab xis, lossis cov khoom siv hluavtaws. Cov ntaub ntawv sib txawv muaj ntau qhov sib txawv ntawm cov dej tsis kam, tsis kam tiv thaiv, thiab kev luam tawm kom tau raws li qhov sib txawv ntawm kev siv ib puag ncig thiab cov ntaub ntawv xa mus.
Cov nplaum nplaum, tseem hu ua cov txheej txheem kev sib txuas, yog qhov tseem ceeb rau tus kheej - daim ntawv nplaum kom ua raws li qhov chaw ntawm ib qho khoom. Feem ntau siv cov nplaum muaj xws li siab- cov nplaum nplaum, cov nplaum kub yaj, lossis cov kua nplaum-raws li cov nplaum, txhua qhov muaj qhov sib txawv adhesion muaj zog thiab tshem tawm tau raws li qhov sib txawv. Kev ua tau zoo ntawm cov nplaum txheej ncaj qha cuam tshuam rau daim ntawv lo nplaum thiab lub neej ntev.
Cov ntawv thaub qab, tseem hu ua cov ntawv tso tawm, yog nyob tom qab txheej nplaum thiab ua haujlwm los tiv thaiv cov nplaum nplaum thiab ua kom yooj yim khaws thiab tuav. Cov ntawv thaub qab feem ntau yog ua los ntawm silicone-coated ntawv lossis zaj duab xis los tiv thaiv cov ntawv lo los ntawm kev sib txuas ua ntej siv thiab ua kom yooj yim tev tawm thaum thov.
