Kev luam ntawv digital yog hais txog kev luam tawm los ntawm cov duab digital ncaj qha mus rau ntau hom xov xwm.[1] Nws feem ntau yog hais txog kev luam ntawv uas ua haujlwm me me los ntawm kev tshaj tawm duab thiab lwm yam khoom siv digital luam tawm siv cov ntawv loj thiab / lossis cov tshuab luam ntawv loj lossis cov tshuab luam ntawv inkjet. Cov luam ntawv digital muaj tus nqi siab dua ib nplooj ntawv ntau dua li cov txheej txheem luam ntawv offset, tab sis tus nqi no feem ntau yog offset los ntawm kev zam cov nqi ntawm tag nrho cov txheej txheem uas yuav tsum tau ua rau cov ntawv luam ntawv. Nws tseem tso cai rau kev luam ntawv raws li qhov xav tau, lub sijhawm hloov pauv luv luv, thiab txawm tias hloov kho cov duab (cov ntaub ntawv sib txawv) siv rau txhua qhov kev xav.[2] Kev txuag nyiaj hauv kev ua haujlwm thiab kev muaj peev xwm nce ntxiv ntawm cov xovxwm digital txhais tau hais tias cov luam ntawv digital tau mus txog qhov chaw uas nws tuaj yeem sib tw lossis hloov pauv offset luam ntawv thev naus laus zis lub peev xwm los tsim cov ntawv loj dua ntawm ntau txhiab nplooj ntawv ntawm tus nqi qis.

Qhov sib txawv loj tshaj plaws ntawm kev luam ntawv digital thiab cov kev cai ib txwm muaj xws li lithography, flexography, gravure, lossis letterpress yog tias tsis tas yuav hloov cov ntawv luam tawm hauv cov luam ntawv digital, tab sis hauv analog luam ntawv cov phiaj yog rov hloov dua. Qhov no ua rau lub sijhawm hloov pauv sai dua thiab tus nqi qis dua thaum siv cov luam ntawv digital, tab sis feem ntau poob ntawm qee cov duab zoo los ntawm kev lag luam digital luam ntawv feem ntau. Cov txheej txheem nrov tshaj plaws suav nrog inkjet lossis laser tshuab luam ntawv uas tso cov xim los yog toner rau ntau hom substrates xws li ntawv, daim ntawv duab, canvas, iav, hlau, marble, thiab lwm yam khoom.

Hauv ntau cov txheej txheem, tus number case lossis toner tsis permeate lub substrate, ib yam li cov pa luam yeeb, tab sis tsim cov txheej nyias nyias ntawm qhov chaw uas tej zaum yuav ntxiv rau lub substrate los ntawm kev siv cov kua fuser nrog cov txheej txheem kub (toner) lossis UV. txheej txheem curing (ink).

Hauv kev luam ntawv digital, cov duab raug xa ncaj qha mus rau lub tshuab luam ntawv siv cov ntaub ntawv digital xws li PDFs thiab cov duab software xws li Illustrator thiab InDesign. Qhov no tshem tawm qhov xav tau ntawm lub phaj luam ntawv, uas yog siv rau hauv offset printing, uas tuaj yeem txuag nyiaj thiab sijhawm.

Tsis tas yuav tsim ib lub phaj, cov ntawv luam tawm digital tau coj cov sijhawm hloov pauv sai thiab luam tawm ntawm qhov xav tau. Es tsis txhob yuav tsum tau luam loj, txiav txim siab ua ntej, kev thov tuaj yeem ua rau tsawg li ib qho luam tawm. Thaum offset luam ntawv tseem feem ntau ua rau cov ntawv luam tawm zoo dua me ntsis, cov txheej txheem digital tau ua haujlwm ntawm tus nqi nrawm los txhim kho qhov zoo thiab qis dua.