Qhov sib txawv ntawm GRACoL, GRACoL7 thiab G7
Peb yog ib lub lag luam loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv nyuaj, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Nws yog ib qho ntawm kev npau suav ntawm ntau lub tuam txhab luam ntawv los tsim kom muaj ib qho qauv luam tawm ntau qhov chaw los txhim kho txhua yam ntawm cov khoom luam tawm. Kev txhim kho ntawm ntau yam qauv kev luam thiab kev tsim cov kev xeem thiab kev tswj cov cuab yeej siv tau los ua kom tiav lub hom phiaj no. Qhov chaw tsim kab ua qauv thiab tus qauv siv (qhov system) thiab qhov kev paub txog kev paub tseeb yog qhov kub siab rau ntau lub koom haum tshawb nrhiav thiab cov koom haum ntau. Nyob rau hauv no hwm, GRACoL hauv Teb Chaws Asmeskas tau siv cov txiaj ntsig zoo thiab ua tiav cov txiaj ntsim zoo.
GRACoL (General Recommendations rau Applications hauv Offset Lithography) yog lub koomhaum pab neeg txhawb nqa ntaub ntawv tawm haujlwm hauv Tebchaws Meskas, uas muaj feem nrog lub Digital Digital Alliance Alliance (IDE International Alliance). GRACoL tsim cov qauv txheej txheem kev xeem thiab kev siv cov ntaub ntawv luam tawm cov ntaub ntawv tsim tawm raws li ISO 12647-2 offset luam ntawv. Nyob rau hauv Lub Rau Hli 2006, qhov tseeb version ntawm qhov kev nqis tes siv, GRACoL7, raug tso tawm.
Raws li kev ntsuam xyuas ntau tshaj, GRACoL7 tau muab cov tswv yim tshiab saib xyuas cov ntawv pom zoo thiab cov ntsiab lus tsis sib haum. Tom qab ntsuas thiab xam cov txiaj ntsim no, qee cov ntaub ntawv raug muab thaum kawg. Raws li cov ntsiab lus no, lub RIP tso tawm calibration curve ntawm CTP platesetter los yog imagesetter yog kho. Dongfeng Printing ntxiv tuaj yeem tsim kho kom zoo dua qub thiab muaj xim zoo nkauj raws li qhov kev ua hauj lwm kev ua haujlwm.
GRACoL7 tus qauv kev cai thiab kev nqis tes ua
1. Cov ntsiab lus tseem ceeb thiab cov tsis tau muaj
GRACoL tau npaj ntau lub tswv yim tshiab thiab tsis pub luam ntawv thiab kev txiav txim siab, xws li: Kev Sau Ntaus Ntaus Ntaus Ntaus (NPDC), HR (HighlightRange), Cov duab ntxoov ntxoo Contrast (SC) thiab Concepts xws li pom sib txawv HC (Highlight Contrast). Ntawm lawv, qhov nruab nrab ntawm cov ntawv ceev ntu NPDC thiab qhov kaj HR yog ob qho tseem ceeb tshaj plaws.
NPDC muaj ob qho tibsi CMY overprint thiab K-monochrome print translations, qhia txog kev sib raug zoo nruab nrab ntawm qhov kev ntsuas nruab nrab thiab ntsuas raws feem pua ntawm nruab nrab ntawm qhov nruab nrab ntawm grey, vim nruab nrab grey ceev tsis muaj kev ntsuas Kev ntsuas tus nqi, tus nqi txheeb rau qhov sib txawv ntawm lub teb, yog li no lub tswvyim yuav ua kom muaj kev sib luag ntawm kev ntsuas ntawm lub suab thiab qhov sib txawv ntawm qhov luam tawm nrog pom kev.
Cov dot enlargement yog ib qho tseem ceeb heev ntawm qhov kev luam tshuab luam ntawv hauv kev tua cov kab luam ntawv, tab sis muaj qee cov teeb meem hauv kev sib piv kev lag luam. Vim li no, GRACoL kuj pom zoo rau qhov kev ntsuas ntawm qhov kev sib txawv ntawm qhov kev hloov, thiab qhov kev hloov siab ntau yam tau hloov qhov kev nce siab hauv nws txoj kev thov. Cov kab xev uas muaj kev cuam tshuam rau tag nrho cov tone thiab gray tshuav ntawm qhov sau. HR yuav tsum tau ntsuas 4 zaug (CMY thiab K 2 zaug txhua zaus) thiab xam 2 zaug; thaum lub cev yuav tsum muaj tsawg kawg 12 npaug ntawm txhua qhov xim ntsuas, thiab HR yog kev ntsuas, qhov txiaj ntsim ntawm qhov kev nce qib yog tus nqi txheeb ze ntawm kev luam xim, zoo li qhov sib txawv thiab kev pom kev tsaus ntuj ntawm cov khoom luam los ntawm HR yog ntau txhim khu kev qha ntxiv ntawm qhov txiaj ntsig ntawm qhov khoom poob. ntawm lawv:
HR_cmy = ND (50c, 40m, 40y) -ND (ntawv) HR_k = ND (50k) -ND (ntawv)
Tsaus Qhov Taub Qhov Ncauj thiab Kaw Tawm Ntsuam HC yog qhov tsis zoo uas ntes tau qhov tseeb ntawm qhov ceev ntu ntawv hauv qhov tsaus ntuj thiab lub teeb, qhov twg:
SC_cmy = ND (75c, 66m, 66y) -ND (paper) SC_k = ND (75k) -ND (ntawv) Qhov sib txawv ntawm qhov sib txawv yog nyob ntawm ntau yam ntawm cov ntawv luam thiab xam tau los ntawm IDEAlink nkhaus software. Bright contrast and dynamics Range-independent, yog ib qho tas li:
HNCM (ND) (25c, 19m, 19y) -ND (ntawv) = 0.25HC_k = ND (25k) -ND (ntawv) = 0.22 Kev qhia txog cov ntsiab lus no coj tau ntau yam kev pab cuam rau kev tswj kom zoo: (1) Tus nqi nce no xam hauv ntau txoj kev. Lawv muaj kev ywj pheej ntawm qhov census hauv lub tshav pob, yog li ntawd lawv ncaj qha cov duab sib xws, ua qhov kev ntsuam xyuas tus kheej thiab lub hom phiaj zoo dua; (2) ywj siab ntawm kev ntsuam xyuas, tsis muaj teebmeem dab tsi zoo li cas thiab Tus naj npawb ntawm cov vev xaib yuav muab piv rau tib tus qauv; (3) Vim tias yuav txo tau cov ntaub ntawv tsim nyog, qhov kev ua haujlwm ntawm cov ntawv xovxwm zoo heev los ntawm kev hloov ntawm kev ntsuas.
2. Kev npaj
(1) Raws li GRACoL7, kwv yees li 6,000 txog 10,000 nplooj ntawv yuav tsum tau kuaj thiab ua kom tiav ntawm lub luam ntawv xovxwm. Daim ntawv thiab tus cwj mem yuav tsum muaj raws li daim GRACoL7 nruab nrab ntawm daim ntawv qhia kev luam ntawv ntawm daim GRACoL7 uas tau pom zoo muab teev rau hauv ISO 12647-2. tus qauv.
(2) Luam cov qauv tsim tawm. Qhov duab duab layout yog lub ntsiab ntawm qhov kev xeem, thiab cov txheej txheem tsim nyog yuav tsum muaj:
a. Ob pawg GRACoL7 P2P xim code Kunming luam tawm, raws siab dua 180 degree typesetting;
b. Ib txheej ntawm GRACoL7 gray tshooj nyiaj;
c. Ob lub ntsiab lus IT8.7 / 4, rov qab 180 degree qhov layout;
d. Peb-xim overprint gray tshuav xim sawb ntawm li 1 cm dav: 50c, 40m, 40y;
e. Monochrome dub thiab grey tshuav xim sawb txog 1cm dav: 50k;
f. Tsim nyog yuav tsum tau sau cov kab thiab cov duab thaij duab.
(3) Tshem tag nrho cov qauv ntaub nplaum rau ntawm phototypesetting los yog CTP platesetter (tab sis xyuas kom meej tias lub cev raug mob nyob rau hauv ib qho chaw ruaj khov khiav hauj lwm hauv lub cev) thiab ntsuas qhov ntsuas me me ntawm cov ntawv uas tsim tawm hauv lub xeev no.
(4) Xyuas kom tseeb tias kev ua tau zoo ntawm ntau yam khoom siv xim thiab cov khoom soj ntsuam tseem ruaj khov, thiab luam tawm daim ntawv pov tseg raws li kev ua haujlwm ntawm kev luam ntawv.
3. Kev luam tawm
GRACoL pom zoo kom luam tawm cov xim ntawm k-cm-y; qhov kev ceev ntom kom tau tiav thaum luam ntawv yog c = 1.45 ± 0.10, m = 1.45 ± 0.10, y = 1.0 ± 0.07, thiab k = 1.65 mus 1.9.
4. Ua kom nruab siab tsis txaus sau cov ntawv luam ntawv
Tom qab qhov hnoos qeev no qhuav lawm, cov xim dub thiab cov xim tha xim peb teev ntawm P2P xim nplai feem ntau ntsuas. Yuav kom tshem tawm qhov yuam kev, ob qhov teeb meem ntawm cov xim uas tau muab sib xyaw nrog 180 degrees, thiab tom qab ntawd ces qhov ntsuas tau yog ntsuas. Cov kev ntsuas tau muab tso rau ntawm GRACoL tus kheej ua haujlwm daim ntawv qhia rau offset printing, thiab tom qab ntawd ces qhov chaw nyob ze ntawm qhov pib ntawm lub preset mus rau qhov siab tshaj plaws ntawm qhov curve twv thiab muaj qee cov ntsiab lus ntawm qhov nkhaus pom, thiab RIP calibration nkhaus yog pom nyob rau hauv daim duab raws li txoj cai kos duab. Qhov tseem ceeb ntawm tus taw tes yog nkag mus rau hauv RIP calibration curve.
5. Ua kom muaj nyiaj tshuav grey
Qhov nyiaj tshuav ntawm grey yog tau los ntawm daim ntawv qhia nyiaj siv nyiaj grey thiab lub chaw GRACoL7. Tus txheej txheem yog: tus nqi ntawm qhov xim ntawm qhov xim ntawm daim npav pleev ntawm C50 nyob rau ntawm tus qauv luam tawm yog ntsuas los ntawm ib tus qauv spectrophotometer, thiab yog hais tias qhov ntsuas ntawm qhov xim ntawm lub hauv paus tseem ceeb ntawm tus qauv (a = 0 , b = -2), Qhov txho tshauv ntawm cov khoom tso tawm yog qhov tseeb. Zhengzhou luam ntawv tsis tas yuav tsim kom muaj ib qho txheeb xyuas tshiab grey tshuav. Yog hais tias qhov nyiaj tshuav ntawm qhov grey tsis yog qhov xim nruab nrab preset central, ces cov twj tso zis yuav tsum raug kho los ntawm gray tshuav nkhaus.
Yog tias koj xav tau ib qho kev nplua nuj calibration curve, xub ua kom muaj CMY tri-colour curve ntawm GRACoL7 coordinate daim ntawv qhia, thiab siv qhov siv kab raws li lub hauv paus los mus sau cov khoom kom pom qhov sib txawv ntawm peb qho xim kom tiav qhov sib npaug ntawm grey, thiab ces nrhiav tau cov ntaub ntawv ntawm kev txheeb nyiaj seem hauv RIP. Thiab ces nkag mus rau cov ntaub ntawv rau hauv RIP. Thaum kawg, siv tus tshiab khiv RIP calibration nkhaus, reprint kuaj lub hom phiaj thiab xyuas seb qhov kev ntsuas tsis sib thooj li tus txheej txheem.
6. Qhov xaus
Daim ntawv no piav qhia txog cov kauj ruam ntawm luam tawm thiab kev npliag ntawm lub tshuab luam ntawv uas tau teev tseg los ntawm GRACoL7. Lub hauv paus mechanism ntawm hom no yog kho cov zis calibration curve ntawm CTP lossis CTF los txhim kho qhov kev luam ntawm qhov kawg. Muaj ob lub tswv yim ntawm qhov kev xeem no thiab cov txheej txheem kho. Lub tsev tsis tuaj yeem lees paub. Ua ntej, tag nrho cov khoom siv tawm yuav tsum ruaj khov thiab tso tawm repeatable thaum tag nrho cov phaj ua thiab luam ntawv txheej txheem. Txwv tsis pub, qhov tsis tau txais yuav tsis muaj nuj nqis rau qhov ntau lawm. Qhov ob, cov ntaub ntawv siv yuav tsum ua raws li ISO cov qauv. Tswj lub tuam txhab luam ntawv vim nws yog lub hauv paus rau kev ntsuas, kev xam pom, thiab kev txiav txim.