Kev tswj xim ib txwm ua yuam kev? Qhov zais cia kom puv - kev tswj hwm tau muab zais ntawm no!
Kev tswj hwm xim zoo tshaj plaws hauv kev luam ntawv thiab ntim khoom lag luam yuav tsum tau ua kom tiav cov xim sib xws ntawm cov khoom siv los ntawm cov txheej txheem kev ua haujlwm, thiab nws cov ntsiab lus nyob hauv qhov kaw - voj tswj ntawm peb txheej txheem: xim calibration, nkhaus characterization thiab xim chaw hloov dua siab tshiab. Kab lus no yuav piav qhia txog cov ntsiab lus tseem ceeb ntawm tag nrho cov txheej txheem tswj kev tswj xim los ntawm ntau yam.
Cov ntsiab lus tseem ceeb ntawm kev tswj xim
01/ Lub hom phiaj thiab qhov tseem ceeb ntawm kev tswj xim
Lub hom phiaj yog kom ua tiav "qhov koj pom yog qhov koj tau txais", piv txwv li kom paub meej tias qhov kawg tsim, luam ntawv kawg, thiab cov khoom kawg yog xim heev -ib txwm.
02/ Cov kev sib txuas tseem ceeb thiab cov thev naus laus zis
Cov zaub yuav tsum tau calibrated raws li ISO 12646 tus qauv kom paub meej xim xim; Cov cuab yeej luam ntawv yuav tsum tau ntsuas kom tsis tu ncua, xws li number case ceev, dot gradation, luam ntawv siab thiab lwm yam kev tswj kom raug; Feem ntau siv xim qhov chaw xws li RGB (tsim kawg), CMYK (kev luam ntawv kawg), thiab Lab (hom phiaj tus qauv) yog siv los paub txog kev hloov xim ntawm cov khoom siv los ntawm ICC cov ntaub ntawv feature. Cov ntaub ntawv pov thawj digital tuaj yeem tshawb xyuas cov xim sai sai, thaum cov ntawv pov thawj ib txwm xav tau los txiav txim siab txog qhov cuam tshuam ntawm cov yam ntxwv ntawm daim ntawv, tus cwj mem zoo, thiab cov txheej txheem tom ntej ntawm cov xim, thiab simulate cov txiaj ntsig luam ntawv ua ntej. Siv spectrophotometers, ntsuas qhov ceev thiab lwm yam cuab yeej los ntsuas cov ntaub ntawv xim, xws li ΔE tus nqi yuav tsum tau tswj nyob rau hauv tus qauv kev lag luam, uas yog, ΔE<2.5.
03 / Standardize cov txheej txheem thiab specifications
(1) Cov neeg siv khoom tus qauv: Cov neeg tsim qauv yuav tsum siv cov ntawv ntsuas ntsuas, thiab cov ntaub ntawv tsim yuav tsum muaj cov ntsiab lus xim xim, cov ntaub ntawv luam tawm, thiab lwm yam, kom ntseeg tau tias muaj kev sib xws nrog cov ntaub ntawv luam tawm.
(2) Prepress cov ntaub ntawv tshuaj xyuas: tshuaj xyuas cov ntaub ntawv tawm tswv yim, fonts, xim qauv, thiab lwm yam, thiab ntxiv cov ntaub ntawv pabcuam xws li cov xim tswj cov strips thiab qib ntshav los muab cov hauv paus raug rau kev luam ntawv.
(3) Kev pov thawj thiab cov qauv tsim khoom loj: cov khoom pov thawj tshiab yuav tsum tau txiav txim siab tus qauv qauv thiab sab saud thiab qis qis; Thawj batch ntawm pawg ntau lawm yuav tsum nruj me ntsis raws li cov ntaub ntawv pov thawj los xyuas kom meej cov xim sib xws ntawm cov khoom batch.
04/ Kev sib tw thiab kev daws teeb meem
(1) Cov khoom sib txawv: Rau cov xim sib txawv tshwm sim los ntawm cov khoom sib txawv ntawm daim ntawv thiab tus cwj mem, nws yuav tsum tau daws los ntawm kev tshuaj xyuas cov khoom siv nruj thiab hloov xim nkhaus.
(2) Ib puag ncig yam tseem ceeb: kub, av noo, lub teeb ci, thiab lwm yam yuav cuam tshuam rau cov xim nthuav tawm, thiab nws yuav tsum tau tsim nyob rau hauv qhov kub thiab av noo ib puag ncig, thiab cov qauv teeb pom kev zoo yog siv rau kev ntsuam xyuas xim.
(3) Kev siv thev naus laus zis thiab tus nqi sib npaug: Kev tswj hwm xim zoo siab xav tau kev nqis peev hauv cov cuab yeej siv, software thiab cov neeg ua haujlwm kev cob qhia cov nqi, tab sis nyob rau lub sijhawm ntev, nws tuaj yeem txhim kho kev ua tau zoo thiab zoo, thiab cov tuam txhab yuav tsum tau npaj tsim nyog raws li lawv tus kheej qhov ntsuas thiab xav tau.
Kev tsim kho ntawm kev tswj xim
01/ Kaw-loop khoom calibration
Kev siv spectrophotometer kom paub qhov tsis siv neeg calibration ntawm lub tshuab luam ntawv, txo cov ntawv pov tseg ntawm lub tshuab tsoos los ntawm 600 ~ 800 nplooj ntawv mus rau tsawg dua 50 nplooj ntawv, thiab tib lub sij hawm txhawb cov xim ruaj khov ntawm cov substrates tshiab thiab cov inks tshwj xeeb.
02/ Cov ntaub ntawv tshwj xeeb yog hloov kho tshiab
Cov xim gamut ntawm lub cuab yeej raug kaw los ntawm ICC cov yam ntxwv cov ntaub ntawv thiab hloov kho txhua hli los tiv thaiv cov ntawv hloov pauv thiab tus cwj mem. Kev tswj xim qhov chaw yuav tsum tau ua ke nrog Pantone lub tsev qiv ntawv xim thiab ntau- xim simulation tshuab, xws li siv 7-xim number case pawg es tsis txhob xim xim.
03/ Hla-batch sib xws
Lub kaw - lub voj kaw tau hloov kho cov ntawv cim los ntawm kev luam theej duab ntawm lub sijhawm tiag tiag (2mm qhov tseeb), thiab qhov kev kam rau siab tuaj yeem tswj tau ntawm ΔE Tsawg dua lossis sib npaug rau 1.0 kom ua tau raws li cov qauv ntawm cov neeg siv khoom lag luam.
04/ Ntau- txheej txheem sib txuam
Digital proofing, flexographic printing, thiab offset xim hloov dua siab tshiab yuav tsum preset feature cov ntaub ntawv, thiab platforms xws li Yinya Cloud tuaj yeem ua tiav xim gamut mapping, txo cov sij hawm kos duab los ntawm ntau dua 70%.
05/ Standardize txoj kev siv
(1) Lub hauv paus ntsiab lus: calibration → characterization → conversion.
(2) Toolchain configuration: standard light source box, i1 Pro spectrophotometer, xim tswj software
(3) Kev tswj cov txheej txheem: Tsim kom muaj pH tus nqi saib xyuas thiab xim sib txawv ceeb toom mechanism ntawm cov tshuaj dampening kom tsis txhob muaj xim txawv los ntawm ib puag ncig hloov pauv.
Nta ntawm kev tswj xim sib txawv software
01/ Cov yam ntxwv tseem ceeb ntawm GMG
(1) Cov xim raug siab: Siv cov txheej txheem hloov xim siab tshaj plaws, nws tuaj yeem muab cov xim zoo nkauj heev, tshwj xeeb tshaj yog tsim rau siab - kev luam ntawv precision, xws li cov cim lag luam, ntim, kos duab thiab lwm yam.
(2) Muaj zog siv tau: Nws tuaj yeem sib xws nrog ntau hom tshuab luam ntawv, saib, scanners thiab lwm yam khoom siv, muab cov xim sib xws lav rau ntau yam khoom siv.
(3) Kev ua haujlwm xim calibration muaj nuj nqi: Muab ntau yam xim calibration daws teeb meem, tshwj xeeb tshaj yog nyob rau hauv high -kawg lag luam, GMG lub peev xwm tswj xim muaj peev xwm ua tau raws li cov kev xav tau ntawm cov xim sib xws, ua kom muaj kev sib luag ntawm cov khoom tsim tawm thiab tsim.
Cov txiaj ntsig tseem ceeb ntawm GMG suav nrog:
(1) High- xim hloov dua siab tshiab: ICC tus qauv tau txais kev pom zoo thiab kev sib txuam xim yog ua los ntawm cov txheej txheem meej, uas tsim nyog rau kev hloov xim ntawm ntau yam khoom siv.
(2) Kev tswj xim tag nrho: Muab cov xim tswj kom tiav los ntawm kev tsim mus rau kev luam ntawv kom ntseeg tau cov xim sib xws hauv txhua qhov txuas.
02/ Cov yam ntxwv tseem ceeb ntawm CGS
(1) Hla-cov khoom siv xim sib xws: Los ntawm kev ntsuas cov saib, tshuab luam ntawv thiab lwm yam khoom siv, tsim cov xim xim tuaj yeem paub qhov xim qhov chaw hloov pauv ntawm cov duab ntawm cov khoom sib txawv los xyuas kom meej qhov sib xws ntawm cov nyhuv ntawm cov yeeb yaj kiab ntawm cov khoom siv sib txawv (xws li cov xinesmas thiab cov vijtsam loj).
(2) Standardized workflow: Ua ke nrog cov cuab yeej kho vajtse, software cuab yeej thiab cov txheej txheem txheem, tag nrho cov txheej txheem ntawm cov xim sau, kho, thiab cov zis yog tswj, uas yog tsim rau luam ntawv, zaj duab xis thiab TV ntau lawm thiab lwm yam teb, uas yuav txo tau phau ntawv proofreading nqi thiab txhim kho ntau lawm efficiency thiab xim reproduction raug.
(3) Tiag -lub sijhawm xim tswj: Txhawb kev ntsuas qhov ntsuas ntawm cov tswv yim thiab cov zis tawm, xws li kho cov xim tsis raws li cov ntawv sib txawv thiab tus cwj mem kom ua tiav "qhov koj pom yog qhov koj tau txais" daim ntawv luam.
Cov txiaj ntsig tseem ceeb ntawm CGS suav nrog:
(1) Software integration zoo: ua tau -nyob rau hauv tej thaj chaw deb pov thawj muaj nuj nqi, ncaj qha hu rau neeg rau zaub mov kev pab los ntawm Internet, thiab ntau localization ntawm technology.
(2) Kev yooj yim ntawm kev ua haujlwm: Cov txheej txheem kho xim yog yooj yim dua, thiab qhov ua tau zoo yog qhov tseem ceeb hauv kev tsim cov xim, gradation duplication thiab txo cov dot o.
(3) Kev ua lag luam qhov chaw: feem ntau yog rau cov neeg siv khoom uas yuav nws cov software, thiab cov xwm txheej siv tau tsom ntau dua.
03/ Cov yam ntxwv tseem ceeb ntawm EFI:
(1) Cov kev daws teeb meem: EFI muab tag nrho cov txheej txheem ntawm kev tswj xim thiab kev tswj xyuas kev tsim khoom, tsim rau ntau hom kev luam ntawv, xws li kev lag luam luam ntawv, luam ntawv digital, thiab ntim luam ntawv.
(2) Kev yooj yim ntawm kev ua haujlwm: EFI's software interface yog qhov yooj yim thiab meej, ua rau nws zoo tagnrho rau cov neeg siv uas yuav tsum tau pib sai, nrog rau qhov pib qis rau kev ua haujlwm.
(3) Kev koom ua ke ntawm digitalization thiab automation: EFI tshwj xeeb tshaj yog tsim rau cov luam ntawv digital thiab cov kab ntau lawm, uas tuaj yeem pab cov lag luam txhim kho kev ua haujlwm thiab txo tib neeg kev ua yuam kev.
Cov txiaj ntsig tseem ceeb ntawm EFI suav nrog:
(1) Kev ua haujlwm yooj yim: EFI muab cov txheej txheem ua haujlwm sib koom ua ke uas txhawb nqa cov cuab yeej siv hluav taws xob thiab kev tswj xim, ua rau nws zoo tagnrho rau cov lag luam luam tawm niaj hnub no.
(2) Kev them nyiaj yug rau ntau yam luam ntawv thev naus laus zis: EFI tsis tsuas yog txhawb kev luam ntawv offset thiab flexo luam ntawv xwb, tab sis kuj tseem tsim nyog rau kev luam ntawv digital.
(3) Tus nqi -kev ua tau zoo: EFI cov kev daws teeb meem software coj mus rau hauv tus account tus nqi- ua tau zoo thiab tuaj yeem muab cov phiaj xwm hloov tau yooj yim dua, tsim nyog rau cov tuam txhab luam ntawv ntawm ntau qhov sib txawv.
Kev tswj xim rau cov neeg siv khoom
Kev siv cov neeg siv khoom ntawm kev tswj xim yog ua raws li cov hauv qab no:
(1) Ua kom muaj xim sib xws: Muaj qhov sib txawv ntawm cov xim xim thiab cov zis ntawm cov khoom siv sib txawv (xws li xov tooj ntawm tes, khoos phis tawj, tshuab luam ntawv).
(2) Tswj cov duab: Rau cov hom lag luam, kev tswj xim kom raug tuaj yeem ua kom paub tseeb tias cov khoom lag luam logos thiab cov ntaub ntawv tshaj tawm zoo ib yam hauv ntau txoj hauv kev (xws li cov vev xaib, cov ntaub ntawv luam tawm, kev tshaj tawm), thiab txhim kho kev lees paub thiab kev tshaj lij.
(3) Txhim kho cov neeg siv kev paub: Kev tswj xim kom raug tuaj yeem tiv thaiv cov neeg siv los ntawm qhov pom kev qaug zog lossis tsis xis nyob vim yog xim distortion, tshwj xeeb tshaj yog thaum saib cov duab, yeeb yaj kiab, lossis tsim thiab tsim, muab kev pom tseeb dua thiab xis nyob.
(4) Ua raws li cov kev xav tau ntawm cov xim dav dav: Nrog rau kev txhim kho cov cuab yeej technology thiab kev nthuav dav ntawm cov xim gamut cov ntxaij vab tshaus, kev tswj xim kom ntseeg tau tias cov ntsiab lus raug tso tawm kom raug ntawm cov xim gamut dav, thaum ua tau zoo nrog cov khoom siv xim gamut kom tsis txhob xim poob lossis oversaturation.
(5) Txhawb kev tsim thiab kev tsim khoom: Cov neeg siv kev tshaj lij xws li cov neeg tsim qauv thiab cov kws yees duab tso siab rau kev tswj xim kom paub meej cov xim sib txawv hauv cov kev sib txuas sib txawv (shooting, kho, tso zis) thiab txo cov nqi rov ua haujlwm los ntawm cov xim sib txawv.
(6) Ua raws li cov qauv kev lag luam thiab cov qauv kev lag luam: Hauv kev tsim, luam ntawv, ntim, zaj duab xis thiab TV kev lag luam, kev tswj xim yog ib qho tsim nyog los ua kom tiav cov qauv tsim thiab ua tau raws li cov neeg siv khoom xav tau rau cov xim raug, uas yuav pab txhim kho kev tsim khoom thiab txo cov nqi seem.
ISO 12646 tus qauv thoob ntiaj teb qhia txog yam tsawg kawg nkaus uas yuav tsum muaj rau cov xim xim thaum lub sij hawm ua pov thawj, nrog rau kev sib xws, tsom mus rau kev ua tau zoo, kev hloov tshiab, qhov loj me, kev daws teeb meem, ci ntsa iab, thiab saib cov xwm txheej. Peb xa mus rau cov khoom uas ua tau raws li qhov yuav tsum tau ua raws li cov qauv qhia. Calibrate cov zaub siv i1 Profiler xim tswj software thiab i1 Pro2 spectrophotometer ua raws li cov kauj ruam no:
(1) Teem cov xim xim kub rau D65 (kom phim lub Hoobkas D65 lub teeb ci) thiab teeb tsa tus nqi Gamma rau 2.2.
(2) Ntsuas thiab teeb tsa qhov ci ntsa iab thiab qhov tsaus ntuj tshaj plaws ntawm cov zaub.
(3) Ntsuas qhov yooj yim xim rendering thaiv ntawm cov zaub.
(4) Tsim cov ntaub ntawv ICC yam ntxwv ntawm cov zaub thiab khaws cia.
Kev tswj xim ntawm qhov pov thawj kawg
01/ Kev tswj xim rau cov ntawv pov thawj digital
Lub hauv paus ntawm digital proofing kev siv xim tswj yog los daws qhov sib txawv ntawm cov xim sib txawv ntawm cov khoom siv thiab xyuas kom meej xim sib xws los ntawm kev tsim tawm mus rau cov zis.
(1) Cov kev cai yooj yim rau kev yoog raws tus qauv
(1) Cov xim sib xws: ISO 12647-7, raws li tus qauv pov thawj digital, xav kom lub tshuab luam ntawv xim gamut los npog CMYK xim gamut ntau yam ntawm cov luam ntawv ib txwm siv (xws li ISO 12647-2), thiab xav tau kom ua tiav cov xim gamut thiab xim gamut txuam los ntawm ICC cov ntaub ntawv feature.
(2) Grey balance control: G7 calibration method yog siv los xyuas kom meej tias L * a * b * tus nqi sib txawv ntawm qhov nruab nrab grey cheeb tsam yog ΔE Tsawg dua los yog sib npaug rau 1.5, thiab qhov sib npaug ntawm qhov sib npaug yog ua tiav los ntawm kev kho TVI (dot enlargement curve).
(2) Cov txheej txheem tswj xyuas tseem ceeb
(1) Cov khoom siv linearization calibration: siv lub spectrophotometer los ntsuas qhov ntom ntom thiab network nce tus nqi ntawm lub tshuab luam ntawv; Tus number case ntim nkhaus yog kho los ntawm DFE digital pem hauv ntej-kawg kom ua qhov kev ua yuam kev gradation ntawm 1% ~ 99% dots Tsawg dua lossis sib npaug rau ± 2%.
(2) Tsim cov ntaub ntawv tshwj xeeb: Raws li peb txoj hauv kev sib txuam ntawm ISO / TS 10128, ICC cov ntaub ntawv tshwj xeeb uas ua raws li Fogra lossis GRACoL tus qauv yog tsim, thiab CMYK rau CMYK 4D spatial hloov dua siab tshiab tau txais kev txhawb nqa.
(3) Kev ua haujlwm tshwj xeeb: Thaum siv cov ntawv tsis yog - cov ntawv txheem, xws li daim ntawv grey, nws yog ib qho tsim nyog los kho cov xim sib txawv ntawm lub sijhawm tiag tiag los ntawm kev kaw - voj calibration system kom ntseeg tau tias cov yeeb yaj kiab tseem ua raws li tus qauv tom qab lamination thiab oiling.
(4) Hla- khoom sib xws: RGB ncaj qha kev sib txuas thev naus laus zis ntawm cov tuam txhab pov thawj digital tuaj yeem ua kom yooj yim rau cov xim sib xws, tab sis nws tseem yuav tsum tau ntsuas lub taub hau luam ntawv, number case thiab ib puag ncig tsis tu ncua, thiab yuav tsum tau ntsuas qhov ntsuas kub thiab av noo ntau tshaj ± 5%.
(5) Kev txheeb xyuas thiab rov ua dua: Siv IT8 xim lub hom phiaj teev los ntawm ISO 12647-7 rau xim aberration qhab nia, xav tau ΔE Tsawg dua lossis sib npaug rau 2.0 ( qib kev lag luam) lossis ΔE Tsawg dua lossis sib npaug rau 1.5 (cov ntawv thov siab kawg), thiab txuas ntxiv ua kom zoo dua los ntawm kev hloov kho.
Raws li tus txheej txheem ISO12647-7: 2007, cov ntaub ntawv tshawb pom ntawm kev ntsuas thiab tswj cov strips ntawm daim ntawv pov thawj digital thiab cov qauv digital yuav tsum nyob rau hauv qhov Scope ntawm Tables 1 thiab 2.
Table 1 Digital Proofing Paper Requirements
Table 2 Digital Proofing Color Standards
02/ Kev Tswj Xyuas Xim hauv Cov Ntawv Pov Thawj Zoo
Standardization ntawm cov ntaub ntawv luam tawm yog qhov tseem ceeb hauv cov txheej txheem pov thawj. Cov kab ke ib txwm yog thawj tus qauv tsim cov ntaub ntawv tus kheej, tom qab ntawd tsim cov ntaub ntawv pov thawj, ua raws li kev cai ntawm cov xim tswj tuav, cov ntawv sau npe, thiab cov ntaub ntawv txheej txheem. Daim duab 1 qhia txog qhov piv txwv uas cuam tshuam.
Daim duab 1 Case study of printed document standardization
Qhov txuas txuas ua ntej muaj qhov tseem ceeb heev rau kev tshuaj xyuas ua ntej tshaj tawm, uas yuav tsum tau rov xyuas dua thiab kho dua ntawm cov ntaub ntawv luam tawm, suav nrog kev kuaj ntshav, overprinting check, graphic inspection, xim sib cais, thiab lwm yam.
Kev tswj xim ntawm lub tshuab luam ntawv kawg
01/ Kev soj ntsuam zoo ntawm cov qauv xim
(1) Kev txiav txim siab tus qauv: seb cov xim ntawm tus qauv qauv puas faded deviation. Yog tias tus qauv hloov xim thiab kho tus cwj pwm tus cwj pwm, tus neeg siv khoom yuav tsum tau lees paub tus qauv; Yog tias cov qauv khaws cia zoo thiab cov ntaub ntawv ntsuas tuaj yeem raug xa mus, tsis muaj kev pom zoo ntxiv los ntawm cov neeg siv khoom.
(2) Kev txiav txim siab ntawm qhov sib txawv ntawm sab saud thiab sab qis: coj tus qauv qauv raws li tus qauv, siv qhov ntsuas Xrite Exact los ntsuas qhov ΔEL * a * b * ntau ntawm cov qauv sib sib zog nqus thiab cov qauv ntiav, tus nqi sib txawv yog tswj nyob rau hauv 2.0 ~ 2.5, thiab cov ntaub ntawv sib raug raug kaw, yog tias cov ntaub ntawv ntau yam me me, nws tuaj yeem txiav txim siab los ntawm ob tog.
(3) Cov ntsiab lus ntsuas cov ntaub ntawv: Peb lub tuam txhab yuav tsum tau voj voog cov ntsiab lus ntsuas ntawm cov khoom (tus qauv qauv, cov qauv sib sib zog nqus, cov qauv ntiav yog tib yam), thiab lub tuam txhab kev lag luam kos npe rau qhov chaw tshwj xeeb rau kev sau cov ntaub ntawv thiab cov qauv luam tawm yav tom ntej. Cov qauv ntawm tus naj npawb ntawm cov ntsiab lus ntsuas yuav tsum yog ib daim qauv rau txhua tog.
(4) Ntsuas ntsuas thiab ntsuas tej yam kev mob: Xrite Exact (L * a * b * txoj kev: CIE; Sensing hom: T; Lub teeb qhov chaw: D50/2 degree).
02/ Cov ntsiab lus ntawm kev tswj xim
Lub sijhawm khaws cia ntawm cov qauv qauv thiab cov qauv txwv sab saud thiab qis dua yog ib xyoos; ΔE tuaj yeem xa mus rau kev lag luam nruj tus qauv 2.5, qhov ntsuas txoj hauj lwm thiab ntsuas qhov taw qhia zoo ib yam, thiab cov xim xim yog siv los ua cov ntaub ntawv txiav txim.
03/ Kev sib koom ua ke ntawm qhov tsis sib xws thaum lub sij hawm cov khoom loj thiab pov thawj
Cov txheej txheem luam ntawv siab, tus nqi pH thiab conductivity ntawm cov txheej txheem dampening tov, cov xim luam ntawv sib lawv liag thiab kos npe yog tib yam. Tus number case ntom ntom yog tib yam li qhov kos npe; L * a * b * tus nqi ntawm txhua pab pawg ntawm inks yog tib yam li qhov kos npe; Hom, qauv thiab kos npe ntawm cov ntaub ntawv luam tawm yog tib yam, thiab qhov saum npoo L * a * b * tus nqi raws li tus qauv ntau.
G7 thiab C9 kev lag luam ntawv pov thawj rau kev tswj xim
G7 thiab C9 daim ntawv pov thawj yog ob lub ntsiab lus tseem ceeb hauv kev tswj hwm xim xim, thiab lawv qhov sib txawv tseem ceeb tau cuam tshuam los ntawm cov qauv kev qhia, daim ntawv thov thiab thaj chaw hloov pauv.
01/ Qhov sib txawv ntawm cov qauv kev qhia
G7 daim ntawv pov thawj yog raws li kev tswj hwm kev siv hluav taws xob grey, uas ntsuas CMYKRGB xya xim los ntawm kev txhais qhov nruab nrab grey ntom ntom nkhaus (NPDC), hais txog qhov pom kev sib xws. Cov ntsiab lus tseem ceeb suav nrog: L * a * b * tus nqi (ΔE Tsawg dua lossis sib npaug rau 1.5) hauv thaj av nruab nrab grey, TVI (dot o nkhaus) thiab NPDC txuam, thiab GRACoL7 tus qauv raws li qhov ntsuas.
C9 ntawv pov thawj yog tsim los ntawm Tuam Tshoj Academy of Printing Science thiab Technology, tsom rau "cua-taw tes tswj" (daj, magenta, cyan, dub, liab, ntsuab, xiav, peb-xim overprint grey, ntawv dawb), thiab txo cov xim sib txawv los ntawm cov ntaub ntawv tswj. Nws cov yam ntxwv tseem ceeb suav nrog: kev ua kom zoo rau cov ntawv suav thiab tus cwj pwm cwj pwm; Hais txog cov txheej txheem kaw- voj kev tswj hwm ntawm tag nrho cov txheej txheem tsim khoom.
02/ Sib piv ntawm daim ntawv thov scopes
Table 3 qhia txog kev sib piv ntawm daim ntawv thov Scope ntawm G7 certification thiab C9 certification.
Table 3 Kev sib piv ntawm daim ntawv thov Scope ntawm G7 certification thiab C9 certification
03/ Qhov txawv ntawm Kev Ua Haujlwm
G7 daim ntawv pov thawj tau muab faib ua ob theem: sib piv NPDC nkhaus nrog grey tshuav nyiaj li cas, thiab ua kom zoo xim sib piv los ntawm ICC profile. Hauv qhov sib piv, C9 daim ntawv pov thawj siv "xya- txoj kev tswj hwm taw tes," ua tiav cov txheej txheem tsim khoom los ntawm ntau qhov tsis sib xws (xws li xim sib txawv ΔE Tsawg dua lossis sib npaug rau 2.0), nrog rau kev tsom mus rau kev cob qhia tshuab luam ntawv thiab kev soj ntsuam cov txheej txheem. Xav txog cov yam ntxwv no, cov khoom lag luam luam tawm tuaj yeem ua qhov tseem ceeb G7 daim ntawv pov thawj (vim kev lees paub siab dua los ntawm cov neeg siv khoom thoob ntiaj teb), thaum siab -kawg luam ntawv ntim hauv tsev tuaj yeem txiav txim siab C9 ntawv pov thawj (tshwj xeeb yog tsim nyog rau cov neeg siv khoom hauv zos thiab cov khoom siv hauv tsev). Tau kawg, qee lub tuam txhab txais kev lees paub dual - cov ntawv pov thawj kom tau raws li cov kev xav tau ntawm kev lag luam hauv tsev thiab thoob ntiaj teb, uas kuj yog ib qho kev xaiv zoo.
Hauv kev xaus, kev tswj cov xim thiab cov khoom siv lean zoo sib xws; ob qho tib si yog rau cov txheej txheem siab tshaj plaws thiab cov haujlwm ntev -. Cov txiaj ntsig tuaj yeem pom nyob rau lub sijhawm luv, tab sis cov txiaj ntsig tau pom nyob rau lub sijhawm ntev. Thaum kawg, kev sib tw ntawm cov tuam txhab yog nyob ntawm kev sib ntaus sib tua ntawm automation siab thiab cov qauv siab!