Daim Ntawv Dawb me me tswj cov nyhuv zaj duab xis hauv prepress platemaking
Apr 23, 2023
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Daim Ntawv Dawb me me tswj cov nyhuv zaj duab xis hauv prepress platemaking
Zaj duab xis plays lub luag haujlwm tseem ceeb hauv prepress platemaking, luam ntawv zoo tau txiav txim siab thaum cov yeeb yaj kiab. Yog li yuav ua li cas xaiv thiab siv zaj duab xis kom ua tiav cov txiaj ntsig zoo tshaj plaws yog qhov tseem ceeb heev.
Thoob ntiaj teb nto moo luam ntawv zaj duab xis manufacturers cov khoom, ua ntej lub community launch ntawm nruj kev ntsuam xyuas, nyob rau hauv tag nrho cov zoo thiab stability yog guaranteed. Kev tsim cov khoom siv yees duab thiab kev tsim khoom kuj tseem xav tau ntau xyoo ntawm kev tshawb fawb thiab kev tsim cov cuab yeej tsim khoom, yog tias cov tuam txhab ua yeeb yaj kiab muaj kev tshawb fawb thev naus laus zis thev naus laus zis, kev tsim khoom, kev tswj hwm thiab kev ua lag luam, yuav muaj peev xwm ua kom tag nrho cov kev ua tau zoo ntawm cov yeeb yaj kiab tau lees paub ntau dua.
Xaiv lub npe nrov npe feem ntau ua rau koj tau txais ob zaug qhov tshwm sim nrog ib nrab ntawm kev siv zog, ua tib zoo mloog rau lub koob npe nrov ntawm cov chaw tsim khoom hauv kev tswj cov yeeb yaj kiab zoo heev, cov neeg siv siv xws li pom daim npav yuam kev, zaj duab xis ob sab txiav tsis sib xws, tsis sib xws. , khawb thiab cov hlau zoo li qub, zaj duab xis grey pos huab degree siab qhov tshwm sim ntawm cov teeb meem yog tsawg heev, tsis tsuas yog txhim kho koj cov kev ua haujlwm zoo, Nws kuj txo cov kev tsis sib haum xeeb nrog cov neeg siv ntau tshaj qhov zoo ntawm cov zis.
Tom qab xaiv ib zaj duab xis, lwm yam uas yuav tsum tau ua yog yuav ua li cas kom ua tiav cov txiaj ntsig zoo tshaj plaws. Qhov no tsis yog tsuas yog cuam tshuam rau zaj duab xis, tab sis kuj siv cov yeeb yaj kiab muaj kev sib raug zoo. Xws li cov yeeb yaj kiab kev ua tau zoo ntawm qib kev paub, kev teeb tsa phototypesetter, kev teeb tsa lub tshuab xuas nrig ntaus, kev txhim kho kho cov xwm txheej, thiab lwm yam. Yog vim li cas vim li cas cov chaw no zoo sib xws rau cov txheej txheem luam ntawv thiab lub luag haujlwm ntawm zaj duab xis hauv tag nrho cov txheej txheem luam ntawv.
Lub luag haujlwm tseem ceeb ntawm kev luam ntawv yog ntau cov ntawv luam ntawm cov ntawv sau qub, lub hom phiaj yog ua kom cov ntawv nyeem thiab cov ntaub ntawv muaj nyob hauv cov ntawv sau qub tuaj yeem raug xa mus sai sai. Cov txheej txheem yog ua tiav kev hloov pauv ntawm cov ntaub ntawv nraaj ntawm lub phaj luam ntawv mus rau lub tshuab luam ntawv nruab nrab xws li ntawv los ntawm kev hloov ntawm tus cwj mem rau ntawm lub tshuab luam ntawv. Ua ntej luam ntawv, tag nrho cov duab nraaj hauv lub khoos phis tawj raug xa mus rau zaj duab xis los ntawm RIP thiab phototypesetter, thiab cov ntaub ntawv duab ntawm zaj duab xis raug xa mus rau lub phaj luam ntawv los ntawm kev luam ntawv. Yog li ntawd, zaj duab xis nyob rau hauv tag nrho pre-nias rau printing, xub pwg lub luag hauj lwm ntawm qhov tseeb thiab zoo meej kis tau tus mob ntawm nraaj ntaub ntawv intermediary, plays ib tug tseem ceeb luag hauj lwm nyob rau hauv lub printing txheej txheem.
Ob qhov tseem ceeb tshaj plaws hauv platemaking yog zaj duab xis ntom ntom thiab linearization.
Film density yog muab faib ua high density thiab low density ob. Tsawg ntom yog hais txog zaj duab xis tom qab yaug kom huv si tsis muaj qhov ntom ntom, feem ntau yog hais txog {{0}}.05. Tsawg ntom ntom ua rau zaj duab xis meej thiab pob tshab, luam ntawv dot zoo yog qhov zoo. High-density yog hais txog qhov tseeb 100 feem pua ntawm cov yeeb yaj kiab tom qab qhov ntom ntom. General coated ntawv printing phaj zaj duab xis yuav tsum muaj ib tug siab ceev ntawm tsis tsawg tshaj li 3.5, feem ntau ntawm 3.8 thiab 5.0, los xyuas kom meej tias cov duab cov ntaub ntawv ntawm cov zaj duab xis yog zoo xa mus rau PS phaj. Cov ntawv luam tawm thiab offset ntawv luam tawm, vim tias cov ntawv luam ntawv nqus tau thiab kev kub ceev luam ntawv thiab lwm yam yog vim li cas thiaj muaj cov ntawv luam ntawv tshwj xeeb, cov kev xav tau siab ceev yog tsawg. Kev ruaj ntseg ntawm qhov siab ceev yog xav tau nyob rau hauv cov yeeb yaj kiab tso zis ntau lawm.
Linearization yog hais txog kev sib cais ntawm cov xim phaj, qhov yuav tsum tau ua kom ntseeg tau tias tus nqi teev nyob rau hauv lub computer, muaj peev xwm tiag tiag xav txog cov ntawv luam tawm. Siv 50 feem pua ntxhiab grey ua piv txwv, xav tau 50 feem pua ntawm cov dot ntawm lub khoos phis tawj, qhov ntsuas qhov tseeb rau cov ntawv luam tawm kuj yuav tsum yog 50 feem pua, qhov yuam kev tsis yog ntau tshaj ib teev. Thaum qhov teeb meem yuam kev loj, nws yuav ua rau muaj kev cuam tshuam loj ntawm cov duab luam tawm, uas yog tshwj xeeb tshaj yog pom tseeb hauv xim plaub-xim luam ntawv. Qhov chaw tsim khoom nruj dua, txhua txhua hnub ntawm txhua lub sijhawm ua piv txwv thiab kev kho linearization, feem ntau vim tias kev ruaj khov ntawm kev tsim cov yeeb yaj kiab thiab kho cov xwm txheej nyuaj los xyuas kom meej.
Txij li cov qib ceev yuav cuam tshuam rau qhov kev ntsuam xyuas linearization, qhov ruaj khov ntawm qhov ceev yuav tsum tau ua ntej. Kodak lub cim tshiab ntawm kub ceev ceev zaj duab xis Gen5 zaj duab xis ua piv txwv, qhov ceev ntawm ruaj khov 3.8 ~ 5. Lub chaw tso zis dav dav yuav tsum tau nruab nrog Densitometer, yooj yim rau txhua lub sijhawm los ntsuas zaj duab xis ceev thiab teev nyob hauv cov tswj tau ntau yam.