xov xwm

Taw qhia:

Nyob rau hauv multicolor offset printing, luam ntawv xim zoo nyob ntawm ib tug xov tooj ntawm kev tswj yam, ib tug ntawm cov uas yog lub printing xim sib lawv liag.Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tau xaiv cov xim kom raug rau kev luam ntawv xim zoo.Kev tsim nyog ntawm cov xim sib lawv liag yuav ua rau cov xim ntawm cov ntawv luam tawm ntau ze rau cov ntawv sau qub.Daim ntawv no qhia luv luv piav qhia txog kev cuam tshuam ntawm kev luam ntawv xim ib ntus ntawm cov xim zoo ntawm cov ntaub ntawv luam tawm.Rau koj siv nkaus xwb:

Printing xim ib ntus

Printing xim sib lawv liag hais txog qhov kev txiav txim ntawm monochrome printing hauv multicolor printing.Piv txwv li, lub tshuab luam ntawv plaub-xim lossis ob-xim tshuab luam ntawv cuam tshuam los ntawm cov xim sib lawv liag.Feem ntau hais lus, nws yog kev siv cov xim sib txawv ntawm cov xim sib txawv hauv kev luam ntawv, cov txiaj ntsig ntawm kev luam ntawv txawv, qee zaum luam ntawv xim txiav txim siab qhov zoo nkauj ntawm cov ntawv luam tawm los yog tsis.

01 Kev sib raug zoo ntawm kev luam ntawv xovxwm thiab xim ib ntus Cov xim naj npawb ntawm cov xovxwm luam ntawv yuav tsum raug coj mus rau hauv tus account thaum xaiv cov xim luam ntawv.Cov tshuab luam ntawv sib txawv yuav tsum tau siv los luam tawm nrog cov xim sib txawv vim lawv qhov kev ua haujlwm sib txawv.

Monochrome tshuab

Monochrome tshuab belongs rau ntub xovxwm qhuav luam ntawv.Daim ntawv nruab nrab ntawm cov xim luam ntawv yog ib qho yooj yim kom ncua thiab deformed, yog li thawj zaug luam ntawv ntawm qhov tseeb ntawm overprinter yuav tsum tau daj thiab dub, kom txog rau thaum daim ntawv nyhav ruaj khov thiab tom qab ntawd luam cov xim yuav tsum luam tawm.Thaum thawj xim luam ntawv qhuav, tus number case hloov ntim yog siab dua 80%.Yuav kom txo qis qhov sib txawv ntawm cov xim nyob rau hauv overprinter, teem tawm ib qho tseem ceeb xim nyob rau hauv daim duab, yuav tsum xub luam lub ntsiab lub suab.

Ob-xim tshuab

Lub 1-2 thiab 3-4 xim ntawm lub tshuab ob-xim yog nyob rau hauv ntub xovxwm qhuav luam ntawv, thaum lub thib ob thiab thib peb xim belongs rau lub ntub xovxwm qhuav luam ntawv.Cov xim nram qab no feem ntau yog siv hauv kev luam ntawv: 1-2 xim luam ntawv magenta - cyan lossis cyan - magenta;3-4 xim luam ntawv dub-daj lossis daj-dub.

Multicolor tshuab

Multi-xim tshuab rau ntub xovxwm ntub luam ntawv, uas yuav tsum tau hais tias txhua tus number case yuav tsum muaj tseeb nyob rau hauv lub instant overprinter, thiab nyob rau hauv lub overprinter number case nro, tsis tuaj yeem yog lwm tus number case los ntawm lub tshuab luam ntawv "muab tam sim ntawd".Nyob rau hauv lub sij hawm luam ntawv tiag tiag, thawj xim number case nyob rau hauv lub overprinting ntawm lub thib ob xim, lub thib peb xim thiab xim plaub, nyob rau hauv lem, ib feem ntawm tus number case yog adhered rau daim pam, yog li ntawd lub plaub xim daim pam obviously nthuav tawm plaub- xim duab.Qhov thib 3 xim number case yog adhered tsawg dua, tsuas yog 4th xim number case yog 100% khaws cia.

02 Kev sib raug zoo ntawm tus cwj pwm cwj pwm thiab xim sib lawv liag

Ink yam ntxwv thiab xim sib lawv liag

Nyob rau hauv kev xaiv cov xim sib lawv liag (tshwj xeeb tshaj yog multicolor printing), xav txog cov yam ntxwv ntawm tus number case: number case viscosity, number case film thickness, transparency, ziab, thiab lwm yam.

viscosity

Ink viscosity plays lub luag haujlwm pom tseeb hauv kev luam tawm.Nyob rau hauv cov kev xaiv yuav tsum yog tsawg liquidity, viscosity ntawm tus number case loj nyob rau hauv pem hauv ntej.Yog tias tsis muaj kev txiav txim siab ntawm tus cwj mem viscosity yuav tshwm sim "rov qab luam tawm" qhov tshwm sim, yuav ua rau muaj xim hloov xim, uas ua rau pom qhov muag plooj, xim grey, tsis muaj zog.

General plaub-xim number case viscosity loj yog xim dub > ntsuab > magenta > daj, yog li lub tshuab plaub-xim ntau siv "dub cyan - magenta - daj" xim sib lawv liag, kom ceev ceev ntawm overprinting.

Ink zaj duab xis thickness

Lub thickness ntawm number case zaj duab xis yog qhov tseem ceeb tshaj plaws kom ua tiav qhov zoo tshaj plaws txo cov xim luam ntawv.Ink zaj duab xis yog nyias nyias, tus cwj mem tsis tuaj yeem sib npaug ntawm daim ntawv, luam ntawv screen luster, xim nyhav rau ntiav, fuzzy;Ink zaj duab xis yog tuab heev, yooj yim ua rau mesh taw tes nce, paste version, txheej depressing.

Feem ntau, qhov kev xaiv ntawm kev ua kom tus number case zaj duab xis tuab ntawm cov xim luam ntawv ib ntus, uas yog "dub - ntsuab - magenta - daj" los luam, cov nyhuv luam ntawv zoo dua.

Pob tshab

Ink transparency nyob ntawm qhov sib txawv ntawm refractive index ntawm pigments thiab binders.Diaphaneity ntawm tus number case tom qab overprinting xim muaj ntau dua, vim tias tom qab overprinting xim overprinting tsis yooj yim los qhia qhov tseeb xim;High transparency number case multi - xim overprint, thawj luam ntawv number case xim lub teeb los ntawm tom qab luam ntawv number case, ua tiav cov xim zoo sib xyaw.Yog li ntawd, tsis zoo transparency ntawm number case thawj, siab transparency ntawm number case tom qab luam ntawv.

Qhuav

Los ntawm tus number case kom qhuav los txiav txim siab, txhawm rau ua kom luam ntawv number case xim ci, gloss zoo luam ntawv, tuaj yeem luam tawm cov luam ntawv qeeb qeeb ua ntej, luam ntawv number case kom qhuav sai tom qab.

03 Kev sib raug zoo ntawm daim ntawv khoom thiab xim sib lawv liag

Cov ntaub ntawv ncaj qha cuam tshuam rau qhov zoo ntawm cov ntawv luam tawm.Ua ntej luam ntawv, daim ntawv feem ntau xav txog smoothness, nruj, deformation, thiab lwm yam.

Ua kom du

High smoothness ntawm daim ntawv, luam ntawv yog nyob rau hauv kev sib cuag nrog daim pam, tuaj yeem luam tawm nrog cov xim tsis sib xws, cov duab meej ntawm cov khoom.Thiab tsis tshua muaj smoothness ntawm daim ntawv, luam ntawv vim qhov tsis sib xws ntawm daim ntawv, hloov tus number case yuav raug cuam tshuam, ua rau luam ntawv number case thickness, daim duab teb ib feem ntawm tus number case uniformity poob.Yog li ntawd, thaum lub smoothness ntawm daim ntawv yog tsawg, pigment granule coarse number case rau thawj xim.

Kev nruj

Daim ntawv nruj thiab daim ntawv smoothness zoo sib xws.Feem ntau, qhov smoothness ntawm daim ntawv nrog rau qhov nce ntawm qhov nruj ntawm daim ntawv thiab txhim kho.Siab nruj, zoo smoothness ntawm daim ntawv pre-printing tsaus xim, tom qab luam ntawv lub teeb xim;Ntawm qhov tsis sib xws, thawj lub teeb xim xim (daj), tom qab xim tsaus, qhov no feem ntau yog vim cov xim daj tuaj yeem npog cov ntawv ntaub plaub thiab hmoov thiab lwm yam ntawv tsis xws luag.

Deformation

Thaum lub sij hawm luam ntawv, daim ntawv yuav deformed thiab txuas mus rau ib qho twg los ntawm cov menyuam dov thiab cov nyhuv ntawm cov kua khiav, uas yog khi rau qhov tseeb ntawm kev luam ntawv overprint.Yog li ntawd, yuav tsum xub luam cov cheeb tsam ntawm cov xim me me los yog tsaus version, thiab tom qab ntawd luam tawm thaj tsam ntawm cov xim loj dua lossis lub teeb xim.

04 Cov xim tshwj xeeb ntawm cov ntawv luam tshwj xeeb

Hauv kev luam ntawv thiab luam tawm ntawm cov haujlwm tshwj xeeb thawj zaug, luam ntawv xim sib lawv liag plays lub luag haujlwm hloov maj mam, uas tuaj yeem tsis tsuas yog ua kom cov luam ntawv ua haujlwm ze los yog rov qab los ntawm cov qub, tab sis kuj ua rau nws rov tsim dua cov khoom zoo nkauj ntawm thawj.

Cov xim qub

Cov ntawv sau thawj yog lub hauv paus rau ob qho tib si platemaking thiab luam ntawv.Cov ntawv sau xim dav dav muaj lub suab nrov thiab lub suab nrov.Hauv cov xim tseem ceeb, muaj xim txias (ntsuab, xiav, ntshav, thiab lwm yam) thiab xim sov (daj, txiv kab ntxwv, liab, thiab lwm yam).Hauv kev xaiv cov xim xaj, yuav tsum ua raws li lub hauv paus ntsiab lus ntawm thawj thiab theem nrab.Yog li ntawd, nyob rau hauv cov xim sib lawv liag kev npaj, nrog cov xim sov tsuas yog luam tawm dub, ntsuab, liab, daj;Kom txias xim - raws li luam ntawv liab, tom qab luam ntawv ntsuab.Yog hais tias lub suab nrov ntawm toj roob hauv pes painting yog xim txias, xim sib lawv liag yuav tsum tau muab tso rau ntawm lub phaj ntsuab tom qab los yog luam ntawv kawg;Thiab lub suab tseem ceeb ntawm daim duab pleev xim rau xim sov, rau magenta, yuav tsum tau muab tso rau hauv magenta version tom qab lossis qhov luam ntawv kawg, kom lub suab tseem ceeb nyob ib puag ncig daim duab qhia lub ntsiab lus.Tsis tas li ntawd, lub suab tseem ceeb ntawm cov tsoos suav tshuaj pleev xim rau cov xim dub, xim dub yuav tsum muab tso rau tom qab lossis zaum kawg luam tawm.