Khoos phib tawj nraaj tsim thiab prepress graphic processing Q&A
Peb yog lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muab tag nrho cov phau ntawv tshaj tawm, hardcover phau ntawv luam ntawv, ntawv thawm phau ntawv luam ntawv, phau ntawv phau ntawv hardcover, sprial phau ntawv luam ntawv, eeb stiching phau ntawv luam ntawv, phau ntawv luam ntawv, ntim ntawv thawv, daim ntawv qhia hnub nyoog, txhua yam ntawm PVC, cov khoom lag luam ntawv, sau ntawv, Cov menyuam yaus phau ntawv, ntawv nplaum, txhua yam hom ntawm cov ntawv tshwj xeeb xim luam ntawv cov khoom lag luam, cov twv txiaj ua si thiab lwm yam.
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Vim li cas cov dub version muaj ntau hom?
A: Cov version dub yuav muaj ntau hom vim muaj cov xim sib txawv chaw sib txawv: Tsis muaj, Lub teeb, Nruab Nrab, hnyav, Maxium, thiab lwm yam Nws txhais tau tias cov xim dub thiab txho chaw ntawm daim duab tuaj yeem faib ua tsis muaj dub version, lub teeb dub version, nruab nrab dub version, hnyav dub version, txhua hom dub, thiab lwm yam hauv qhov sib cais xim. Yog li vim li cas thiaj li dub lossis grey yuav muab faib ua cov dub-qhov hluav taws xob ntawm qhov ntau thiab tsawg?
Peb paub tias cov ntshiab dub version tuaj yeem sawv cev xim grey series xim, thiab cov xim daj, magenta, thiab cyan xim xim tseem tuaj yeem sawv cev xim grey series xim. Cov xim daj, magenta, cyan, thiab xim dub kuj tuaj yeem sawv cev xim ntawm cov xim grey.
Yog tias qhov nruab nrab ntawm lub teeb xim grey yog sawv cev los ntawm daj, magenta, thiab xiav, ces cov ntawv dub ntawm nkag tau rau hauv Internet yog 0%, qhov twg dub version yog Tsis muaj;
Yog tias qhov nruab nrab grey xim xim yog sawv cev los ntawm cov ntshiab dub version, nws yog Maxium hom dub version;
Yog tias cov xim nruab nrab yog sawv cev los ntawm plaub xim ntawm daj, magenta, cyan, thiab dub, lub xim dub yog qhov loj dua, thiab daj, magenta, thiab cyan dots me dua. Thaum cov dub version ntawm kev nkag mus rau hauv Internet tau me me, daj, magenta, thiab xiav dot qhov loj dua, ua rau kev sib raug zoo ntawm kev tshem tawm mus ntev, thiab tom qab ntawd yuav muaj dub version ntawm Lub Teeb, Nruab Nrab, Hnyav, thiab cov zoo li Cov. Piv txwv li, cov xim R163G163B163 tuaj yeem sib cais raws li kev ua haujlwm hauv qab no:
Thaum cov dub version yog Lub Teeb, cov xim sib cais tshwm sim yog C40% M33% Y33% K1%; thaum cov ntawv dub yog Nruab Nrab, qhov kev sib cais xim yog C37% M30% Y30% K7%; thaum cov ntawv dub yog hnyav, qhov sib cais xim yog C26% M20% Y20% K22%;
Nws tuaj yeem pom tau tias tseem muaj qhov sib txawv loj ntawm cov txiaj ntsig ntawm lawv qhov sib cais, tab sis qhov kev luam ntawv yuav tsum zoo ib yam nkaus.
Cov lus hais saum toj no hais txog cov xim sib cais tau rau xim nruab nrab grey. Qhov tseeb, dub version hom tseem muaj qhov sib txawv ntawm cov xim tsis yooj yim hauv cov duab, vim hais tias cov xim nyuaj muaj cov khoom grey, thiab cov grey tivthaiv kuj muaj faib faib daj. Qhov teeb meem ntawm kev faib ua feem ntawm magenta, cyan thiab dub. Xws li xim av liab R186G139B10, cov xim sib cais tau yog:
Thaum cov dub version hom yog Lub Teeb, C33% M39% Y100% K13%; thaum cov dub version hom yog Nruab Nrab, C26% M31% Y99% K23%; thaum cov dub version hom yog Hnyav, C70% M24% Y99% K32%.
Lub Rooj Separation Yog Dab Tsi? Nws ua li cas?
A: Cov lus sib cais xim yog qhov tseeb cov tshooj ntawm ntau qhov chaw thaum cov xim sib cais. Raws li pom hauv daim duab 1, nws suav nrog Ink color, Dot Gain, Separation Type, Black Generation, Dub Ink Limit, thiab tag nrho Cov chaw teeb tsa xws li Tag Nrho Cov Kev Txwv. Qhov no yog ib yam ntawm Photoshop hloov tau yooj yim thiab qhov sib luag thaum nws tawm los rau kev sib cais xim. Nws ua haujlwm thaum RGB xim hom hloov mus rau CMYK hom, uas yog, kev sib cais xim, thiab lawv cov chaw sib txawv yuav tsim cov xim sib txawv xim sib txawv. Tom qab Photoshop 5.0, lub rooj sib cais xim tau tau ua nyob rau hauv kev tswj xim chaw ntawm CMYK hom xim, los ua ib feem ntawm kev tswj xim.
Tus number case xim teev txhais tau li cas? Vim li cas koj xav ua tus xaum xim?
A: Muaj ntau hom number case nyob hauv Ink Color Type Chaw thau khoom nco-ntawv qhia zaub mov (qhov kev xaiv yuav luam tawm ntawm lwm cov duab sib txawv). Pom cov xim number case hauv daim duab 1. Qhov no yeej suav nrog ob sab, xws li, hom number case siv nyob rau hauv kev luam ntawv, thiab hom luam ntawv. Ntawm no Lub Toyo Inks hais txog Nyiv Toyo Ink; Eurostandard yog hais txog European standard number case xim; SWOP hais txog qhov xaib offset cov xim txheem xim; Tektronix phaser III Pxl hais txog Tektronix tshuab luam ntawv xim xim. Coated yog hais txog cov ntawv coated (xws li cov ntawv coated), Uncoated yog hais txog cov ntawv tsis-txheej (offset ntawv), thiab Xov Xwm yog hais txog cov ntawv xov xwm. Yog li, qhov kev xaiv ntawm Ink Color yog qhov tseeb los xaiv cov xim ntawm tus number case koj siv thaum luam ntawv ntawm lub substrate koj siv. Vim tias Tuam Tshoj cov kua mem hauv tsev tsis muaj cov kev xaiv sib xyaw hauv cov ntawv qhia ntawm no, hauv kev ua haujlwm tiag tiag, xws li luam tawm ntawm cov ntawv coated, nws raug pom zoo kom siv cov Toyo (Coated) lossis SWOP (Coated); yog tias luam tawm ntawm daim ntawv offset, koj tuaj yeem xaiv Toyo (Tsis Muaj Tsis Raug) lossis SWOP (Tsis Tau Sau).
Yog li vim li cas koj ho xav teeb tsa tus number case? Qhov no vim tias cov kev xaiv ntawm no txawv, qhov tshwm sim ntawm cov xim sib cais yuav sib txawv, uas yog, tus cwj mem koj xaiv yuav zoo ib yam li cov kua mem uas koj siv los xyuas kom meej tias cov xim tuaj yeem kho rov qab thaum luam ntawv. Ib qho ntxiv, vim tias tib tus number case yuav luam tawm ntawm cov ntawv sib txawv, yuav muaj qhov sib txawv, yog li xaiv cov xim number case rau tib daim ntawv uas koj tau ua los xyuas kom tseeb tias cov xim sib cais tau tshwm sim.
Qhov chaw teeb tsa tsim nyog rau Dot Tau ntawm lub rooj sib cais cov xim?
Teb: Daim ntawv teev cov kua roj yog qhov tshwm sim uas cov teev tau ntxiv vim yog lub tshuab luam ntawv siab thiab nkag mus thiab sib txawv ntawm tus number case rau ntawm qhov chaw thaum lub sijhawm luam ntawv. Qhov tshwm sim no tau ua pov thawj muaj nyob. Qhov luaj li cas ntawm cov teev nce tus nqi raug cuam tshuam los ntawm lwm yam xws li luam ntawv siab, qaij, thiab tus number case viscosity; qhov loj dua cov luam ntawv siab, qhov loj dua qhov teev tau nce; qhov muaj zog ntawm cov khoom nqus tau yooj yim dua, qhov loj dua qhov teev tau nce tus nqi. Tshwj xeeb, ntawv tshaj xo, ntawv offset, thiab cov ntawv coated muaj cov ntawv tshaj xov nthuav dav dav thiab daim ntawv loj me tshaj. Rau qhov sib txawv me me ntawm qhov hluav taws xob, qhov teev teev tus nqi tsis yog tib yam. Feem ntau, qhov kev sib tw ua haujlwm siab thiab tsaus-dot qhov tsim nyog tau txais qhov tseem ceeb yog qhov me me, thiab qhov nruab nrab-laus dot tau tus nqi loj.
Dot Gain tau teev nyob rau hauv cov xim sib cais cov lus kom tau them ua ntej qhov tshwm sim ntawm dot loj hauv kev luam ntawv. Ntawd yog, thaum cov xim sib cais tau ua tiav, cov teev tau txiav tawm kom tsim nyog, thiab thaum lub teev tau loj thaum lub sijhawm luam ntawv, qhov xav tau loj yog tau.
Yog li loj npaum li cas cov teev teev tau nce? Cov qauv yooj yim yog tsuas yog los teeb tus nqi siab tshaj plaws ntawm cov teev tau nce, thiab Photoshop yuav them nyiaj rau cov ntsiab lus mesh ntawm txhua lub suab raws li tus nqi no. Yog tias nws tau teeb tsa raws li txoj kab nkhaus, nthuav dav tus nqi ntawm txhua lub suab taw tes nyob rau hauv qhov tseeb kev luam tawm tuaj yeem ntsuas, thiab ib qho nkhaus raug tsim tawm, thiab cov dot nthuav dav tau them raws li txoj kab nkhaus. Qhov nyiaj them rov qab no nws yog qhov tseeb dua. Nws tseem nyuaj rau txiav txim siab qhov dot nce tus nqi hauv kev ua haujlwm tiag tiag. Feem ntau, nws raug nquahu kom siv Photoshop Dot Gain default setting. Piv txwv li, thaum luam ntawv ntawm cov ntawv coated, tus nqi neej ntawd yog li 17%, tus nqi neej ntawd rau offset ntawv luam ntawv yog kwv yees li 22%, thiab tus nqi neej ntawd rau cov ntawv xov xwm luam ntawv yog li 30%.
Thaum twg koj xaiv GCR rau kev sib cais xim? Thaum twg koj xaiv UCR? Dab tsi yog qhov sib txawv ntawm GCR thiab UCR cov xim sib cais tau tshwm sim?
GCR yog yooj yim los tswj tus ntsuas grey, txo tag nrho cov number case overprinting thaum luam ntawv, ua rau tus number case qhuav sai thiab ua kom tus luam ntawv nrawm dua. Rau cov duab dav dav, GCR feem ntau raug xaiv rau cov xim sib cais hauv Photoshop. UCR txhais tau tias tshem tawm ntawm lub qhov pib xim. Lub hom phiaj ntawm UCR yog feem ntau rau cov xim dub tsaus ntuj nti xim hauv cov duab, thiab cov dub tivthaiv ntawm cov xim hloov los ntawm dub K. Txawm li cas los xij, qhov tseem ceeb ntawm UCR yog me dua GCR. GCR muaj cov txiaj ntsig dav dav, feem ntau pib los ntawm qhov ntsuas txho ntawm 20%, thiab UCR feem ntau tsuas yog rau kev kho qhov tsaus ntuj. Yog li ntawd, rau cov duab siab txhais nrog cov xim ntau dua thiab cov xim tsaus ntuj, UCR tuaj yeem xaiv cov xim sib cais.
Qhov sib txawv ntawm ob yog: cov dub version ntawm GCR cov xim sib cais ntau dua, lub suab yog ntev dua; cov ntawv dub ntawm UCR cov xim sib cais tau tsawg dua, tab sis hauv qhov chaw tob tshaj, K tus nqi yog qhov loj dua.
Grey Ramp txhais li cas?
A: Qhov nkhaus hauv daim duab tiag qhia tau hais tias qhov sib cais xim tshwm sim rau qhov nruab nrab grey. Nws tseem tuaj yeem hais tias yog xim nkhaus sib cais, lossis qhov nkhaus sib npaug. Qhov tshwm sim ntawm qhov nruab nrab ntawm cov xim tshauv nruab nrab raws li qhia hauv ntu A ntawm Daim Duab 2 yog hu ua C50% M40% Y38% K12%.
Dab tsi yog Dub number case Lmit txhais li cas rau tus cwj mem dub txwv los yog tus cwj mem dub ntau tshaj? dab tsi yog cov nyhuv?
A: Tus nqi siab tshaj plaws ntawm tus cwj mem xim dub yog hais txog qhov siab tshaj plaws ntawm cov dub teev internet cov ntsiab lus tsim tawm thaum cov xim sib cais. Nws tuaj yeem tswj cov teev qhov loj me ntawm cov ntawv dub thaum sib cais xim, kom cov xim tsis qog thaum xim sib cais. Lub sijhawm no, qhov loj ntawm cov lus nkag tau muaj txiaj ntsig zoo. Yog tias ib qho xim yog 100% ntawm Dub Ink Lmit, qhov tshwm sim yog C80% M69% Y63% K68%, thiab qhov tshwm sim 70% ntawm Dub Ink Lmit yog C89% M29% Y83% K51%. Raws li tuaj yeem pom los ntawm cov ntaub ntawv, qhov loj ntawm cov nqi no cuam tshuam ncaj qha rau kev sib cais ntawm cov xim, tab sis xim tsis hloov ntau. Raws li pom hauv daim duab 3, nws tuaj yeem pom meej meej los ntawm cov kab sib cais xim uas Daim Npav Dub Ink Lmit yog 100% thiab 70% sib txawv, feem.
Tag nrho Ink Lmit txhais li cas?
A: Tag nrho cov Ink Lmit ntawm no hais txog qhov ntau ntawm tus number case overprint nyob rau hauv plaub-xim luam ntawv, uas yog, plaub-xim teb ntawm Y, M, C, thiab K (100% ntawm lub teev), qhov tseeb overprinting thaum overprinting. Vim tias tus number case overprinted ntawm tus number case txheej ntawm thawj luam ntawv xim, tus nqi overprinting tsis yog 100%, feem ntau tsawg dua 100%, yog li cov nyiaj tag nrho ntawm overprinting nyob rau hauv plaub-xim khoom overprinting yog li ntawm 320% thiab 360% Cov. Yog li ntawd, nws tau pom zoo hauv Photoshop tias Total Ink Lmit feem ntau teeb tsa ntawm 320% thiab 360%. Cov kab sib cais xim ntawm cov qauv teev ntawm 320% thiab 400% yog pom hauv daim duab 4. Cov kev sib cais xim ntawm tib xim R59G66B43 yog: C67% M48% Y81% K56% thaum tag nrho cov kua cwj pwm yog 320%; C67% M48% Y81% K56% thaum tag nrho cov kua mem tau yog 400%.
Dab tsi CMYK Teeb hauv Photoshop 5.0 thiab tom qab xa mus txog? Dab tsi yog qhov zoo dua rau CMYK tus qauv?
A: Ua ntej rau Photoshop 4.0, muaj ib qho kev xaiv rau Separation Table chaw, uas tuaj yeem qhib raws li Cov Ntaub Ntawv \ Xim Chaw. Photoshop 5.0 yuav tau pauv mus ua File \ Xim Teeb \ CMYK Teeb. Nws raug nquahu kom siv lub pob Built In. Txij li qhov chaw hloov pauv tau tuaj yeem siv lub sijhawm no, cov xim sib cais thiab cov xwm txheej luam tawm tiag tiag tuaj yeem ua tau tib yam. Tag nrho cov kev teeb tsa hauv qab no zoo ib yam li Separation Table thiab Printing Inks Teeb tsa cov Photoshop 4.0.
Scanned RGB hom xim keeb kwm muaj cov ntawv sau dub. Yog tias koj xav siv cov lus scanned ncaj qha, xim dab tsi yog qhov zoo tshaj rau cov lus no? Yuav ua li cas kom ua tiav qhov kev xav tau zoo tagnrho no?
A: Rau cov ntawv sau dub thiab kab ntawm daim duab xim ntawm RGB hom, nws yog qhov zoo tshaj plaws los ua cov xim sib cais thiab kho kom haum rau hauv cov ntawv sau dub tsuas yog sau, ua cov ntawv monochrome, kom tus nqi xim ntawm lo lus yog C0% M0% Y0% K100%. Vim tias, yog tias cov ntawv nyeem dub yog muaj li plaub xim C, M, Y, thiab K, yog tias muaj qhov tsis meej pem thaum lub sijhawm overprinting, ghosting lossis xim npoo yuav tshwm.
Muaj txoj hauv kev yooj yim kom tau ntau tshaj plaws ntawm koj lub hom phiaj: xaiv cov hom dub yog Qhov Siab Tshaj Plaws hauv cov xim sib cais. Lub sijhawm no, tag nrho cov xim dub lossis ntau xim ntawm cov xim grey tau muab cais ua tsuas yog cov dub version nrog dots, uas tuaj yeem pom thaum RGB → CMYK raug tua. Piv txwv li, dub R15G14B14 tau muab cais ua C0% M0% Y0% K95%, thiab yog tias qhov xim cais tau teeb tsa, cov ntawv dub yog lub teeb, thiab cov xim sib cais tshwm sim yog C79% M78% Y73% K76%.
Thaum twg nws zoo dua los hloov cov duab ntawm hom RGB rau hom CMYK?
Teb: Vim tias qhov chaw khaws cia thiab lub cim xeeb nyob hauv RGB cov duab yog me me, kev ua haujlwm nrawm dua yog ua tiav thaum kho, yog li cov duab cov duab siab kom pom tseeb thiab ua kom zoo dua yog qhov zoo dua hauv RGB hom. Yog li ntawd, nws raug nquahu kom ntxuav cov duab thaum daim duab raug kho. Tom qab kev daws teeb meem tiav, tig mus rau CMYK. Tom qab ntawd ua mus rau xim ua. Vim tias txawm tias cov xim tiav rau hauv hom RGB, xim yuav hloov me ntsis tom qab hloov mus rau CMYK.