Offset luam ntawv yog ib qho ntawm cov qauv luam ntawv nyob rau hauv kev lag luam luam ntawv niaj hnub, uas muab cov khoom lag luam zoo, khoom lag luam thiab kev lag luam. Rau nws, cov ntawv tshwj xeeb tau siv, uas ua rau nws muaj peev xwm hais cov halftones kom zoo thiab txig cov me me cov ntsiab lus ntawm daim duab. Koj Yuav Xaiv Qhov Ntawv Offset Zoo Li Cas?
Tag nrho hais txog offset ntawv
Offset ntawv feem ntau yog siv rau kev luam tawm ntau hom xim kos duab thiab cov ntawv luam tawm-ntawv luam tawm nrog cov duab piav qhia txog halftone. Kuj luam tawm cov khoom luam tawm ntawm nws. Lub zog muaj zog ntawm daim ntawv saum npoo yog muab los ntawm cov ntawv nplaum nto, uas yog txheej txheej nyias sizing cov neeg sawv cev. Offset ntawv muaj nyob rau ntau qhov ntau thiab qhov hnyav vim nws tau siv dav hauv ntau daim ntawv thov.
Offset ntawv yog qhov xav tau nyob rau hauv yuav luag txhua lub tshuab luam ntawv luam tawm cov ntawv xov xwm, daim ntawv qhia hnub, cov phau ntawv, cov ntawv sau, cov ntawv sau, cov ntawv qhia, cov ntawv qhia, cov ntawv me, cov ntawv thiab lwm yam.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm offset luam ntawv yog daim ntawv thov ntawm cov duab mus rau hauv lub phaj kho nrog cov khoom tshwj xeeb, thiab tom qab ntawd mus rau hauv nruab nrab luam ntawv (siv ib lub tog raj kheej pab). Nrog rau hom no, plaub hom xim tau siv - dub, magenta, daj thiab cyan, uas ntxiv tau kua roj. Nyob rau theem kev npaj ntawm kev offset ncig, tus neeg tsim qauv tsim cov khoos phis tawj ntawm cov ntawv luam tawm tom ntej, uas tau pom tawm hauv daim ntawv thaij duab thiab ua rau cov khoom siv tshwj xeeb.
Xaiv ntawv offset
Offset ntawv txawv nyob hauv qhov ntom ntwm - piv txwv li, los sau cov tsiaj ntawv ntawv, cov ntawv xa nyiaj, cov ntawv xa tawm, cov ntawv qhia thiab cov ntaub ntawv nrog, koj yuav tsum xaiv cov ntawv nrog qhov ntom ntawm 70, 75, 80, 90, 100 thiab 115 g / m2. Kev luam tawm cov khoom lag luam phau ntawv, phau ntawv me, cov lus qhia, cov nplaub tshev thiab cov sijhawm, cov ntawv offset nrog qhov ntsuas no ntawm 70, 80, 90, 100 g / m2 yog qhov tsim nyog. Nws yog qhov zoo dua los ua cov ntawv luam tawm ua tau zoo ntawm nplooj ntawv nrog tus ceev nrog siab dua 150 g / m2.
Txog ntawm daim teb ntawm daim duab zoo nkauj, "Dabman" offset ntawv yog qhov zoo, qhov ntom ntawm uas ntau tshaj 180 g / m2.
Rau kev kub ceev web offset presses, xaiv cov ntawv zoo cellulose ntawv nrog kev txhim kho kev ntxhib los mos, npliag zog, du thiab nto. Dyed offset ntawv nrog nto gluing thiab tshuab xov yog siv rau kev tsim tawm ntawm cov txuj ci kev tshaj lij. Rau kev luam tawm cov ntawv luam tawm ntau xim (ntawv xov xwm, ntawv xov xwm, ntawv nyeem, ntxiv rau ntawv-xaum thiab ntawv tshaj tawm), nws yog qhov zoo dua los xaiv puffy offset ntawv, qhov ntom ntawm uas yog 60, 65, 70, 80, 90, 100 thiab 120 g / m2.
