Xov xwm

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Tsuav R+G+B peb xim sib xyaw ua ke, ntau dua kaum lab lab xim tuaj yeem tsim. Vim li cas dub? Cov xim dub tuaj yeem tsim tawm thaum piv rau RGB sib npaug, tab sis nws siv peb lub inks los tsim ib qho xim, uas tsis muaj peev xwm ua tau los ntawm kev lag luam pom. Qhov tseeb, dub tau siv ntau hauv cov txheej txheem tsim, uas yog vim li cas plaub-xim luam ntawv tau siv. Muaj ib qho ntxiv: thaum cov xim dub tsim los ntawm RGB tau sib piv nrog cov xim dub ncaj qha sib xyaw nrog tus lej, tus qub muaj kev nkag siab tsis meej, thaum lub sijhawm tom kawg xav hnyav dua.

1. Nrog rau plaub txoj cai, nws yooj yim dua rau txhua tus neeg lees txais. Nws yog sib npaug rau plaub zaj duab xis thaum tso tawm, thiab nws kuj tseem sib npaug rau plaub txoj hauv kev ntawm cyan, magenta, daj, thiab dub (C, M, Y, K) hauv cov kab hauv PHOTOSHOP. Kev hloov kho ntawm cov channel thaum peb ua cov duab yog qhov hloov pauv rau zaj duab xis.

2. Meshes, dots thiab kaum, tiaj nets thiab dai nets. Mesh: ib square inch, tus naj npawb ntawm cov ntawv tso, 175 mesh rau cov ntawv luam tawm ib txwm muaj, thiab 60 mesh rau 100 mesh rau ntawv xov xwm, nyob ntawm daim ntawv zoo. Kev luam ntawv tshwj xeeb muaj lub ntsej muag tshwj xeeb, nyob ntawm qhov kev ntxhib los mos.

1. Hom ntawv thiab qhov tseeb ntawm daim duab

Kev luam tawm niaj hnub siv offset printing (plaub-xim luam tawm), uas yog, cov duab xim tau muab faib ua plaub xim: cyan (C), khoom (M), daj (Y), dub (B) plaub xim xim zaj duab xis, thiab tom qab ntawv Luam PS lub phaj tau luam plaub zaug los ntawm kev nias offset, thiab tom qab ntawd nws yog cov khoom luam tawm xim.

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Cov duab luam tawm txawv ntawm cov duab hauv computer zoo tib yam. Cov duab yuav tsum yog hauv CMYK hom tsis yog hom RGB lossis lwm hom. Thaum tso tawm, daim duab hloov pauv mus rau dots, uas yog qhov tseeb: dpi. Qhov theoretical yam tsawg kawg nkaus ntawm cov duab rau luam ntawv yuav tsum ncav cuag 300dpi/pixel/inch, thiab cov duab zoo nkauj uas koj nquag pom hauv computer feem ntau zoo nkauj heev ntawm lub saib. Qhov tseeb, Feem ntau ntawm lawv yog 72dpi RGB hom duab, thiab feem ntau ntawm lawv tsis tuaj yeem siv rau luam ntawv. Cov duab siv yuav tsum tsis txhob muab tso tawm raws li tus qauv. Tsis txhob xav tias cov duab tuaj yeem siv rau kev luam ntawv vim tias lawv zoo heev los ntawm acdsee lossis lwm yam software, thiab lawv zoo nkauj tom qab kev nthuav dav. Lawv yuav tsum tau qhib hauv photoshop, thiab cov duab loj tau siv los lees paub qhov tseeb. Qhov tseeb. Piv txwv li: daim duab nrog daws teeb meem 600*600dpi/pixel/inch, tom qab ntawd nws qhov loj me tuaj yeem nthuav dav mus rau ntau dua ob npaug thiab siv yam tsis muaj teeb meem. Yog tias qhov kev daws teeb meem yog 300*300dpi, tom qab ntawd nws tsuas tuaj yeem txo qis lossis qhov loj me me tsis tuaj yeem nthuav dav. Yog tias daim duab daws teeb meem yog 72*72dpi/pixel/inch, tom qab ntawd nws qhov loj me yuav tsum raug txo (qhov dpi qhov tseeb yuav raug loj dua), kom txog thaum kev daws teeb meem dhau 300*300dpi, nws tuaj yeem siv tau. (Thaum siv txoj haujlwm no, teeb tsa cov khoom "Redefine Pixel" hauv qhov loj me me xaiv hauv Photoshop rau tsis muaj.)
Cov duab ib txwm muaj yog: TIF, JPG, PCD, PSD, PCX, EPS, GIF, BMP, thiab lwm yam. Thaum kos duab, TIF xim, dub thiab dawb bitmap, EPS vector lossis JPG

2. Xim ntawm daim duab

Hais txog qee cov ntsiab lus tshaj lij xws li luam tawm dhau, luam dhau, hollowing tawm, thiab pom xim hauv kev luam ntawv, koj tuaj yeem xa mus rau qee qhov cuam tshuam txog kev luam ntawv. Nov tsuas yog qee qhov kev nkag siab uas yuav tsum tau them sai sai rau.

1, hollow ua

Muaj kab ntawm cov cim xiav nias rau ntawm cov phaj hauv qab daj, yog li ntawm cov phaj daj ntawm zaj duab xis, txoj haujlwm ntawm cov cim xiav yuav tsum khoob. Qhov tsis sib xws kuj tseem muaj tseeb rau daim ntawv xiav, txwv tsis pub lub xiav yuav luam tawm ncaj qha rau ntawm cov xim daj, xim yuav hloov, thiab thawj tus cim xiav yuav dhau los ua ntsuab.

2. Tshaj tawm

Muaj kab ntawm cov cim dub nias rau ntawm qee lub phaj liab, tom qab ntawd txoj haujlwm ntawm cov cim dub ntawm cov phaj liab ntawm zaj duab xis yuav tsum tsis txhob hollowed tawm. Vim tias dub tuaj yeem tuav cov xim twg, yog tias cov ntsiab lus dub tau hollowed tawm, tshwj xeeb yog qee cov ntawv me me, qhov ua yuam kev me me hauv kev luam ntawv yuav ua rau ntug dawb raug nthuav tawm, thiab qhov sib txawv ntawm cov xim dub thiab dawb loj, uas yog qhov yooj yim pom.

3. Plaub-xim dub

Qhov no kuj yog teeb meem ntau ntxiv. Ua ntej tso tawm, koj yuav tsum txheeb xyuas seb cov ntawv dub nyob hauv cov ntawv tshaj tawm, tshwj xeeb yog cov ntawv me me, tsuas yog nyob ntawm daim phaj dub, thiab yuav tsum tsis txhob tshwm ntawm lwm daim phaj peb xim. Yog tias nws tshwm sim, qhov zoo ntawm cov khoom luam tawm yuav raug luv nqi. Thaum cov duab RGB hloov pauv mus rau CMYK cov duab, cov ntawv dub yuav twv yuav yog plaub xim dub. Tshwj tsis yog qhov tshwj xeeb tau teev tseg, nws yuav tsum tau ua tiav ua ntej zaj duab xis tuaj yeem tsim tawm.

4. Daim duab nyob hauv hom RGB

Thaum tso cov duab hauv RGB hom, RIP system feem ntau cia li hloov pauv lawv mus rau hom CMYK rau kev tso tawm. Txawm li cas los xij, cov xim zoo yuav raug txo qis, thiab cov khoom lag luam luam tawm yuav muaj lub teeb xim, tsis ci, thiab cov txiaj ntsig tsis zoo. Daim duab tau hloov pauv zoo tshaj plaws rau hom CMYK hauv photoshop. Yog tias nws yog cov ntawv luam theej, nws yuav tsum dhau los ntawm cov txheej txheem kho xim ua ntej daim duab tuaj yeem siv tau.


Sijhawm Tshaj Tawm: Jul-01-2021