UV Offset Ink Printing Xim txawv Kev Paub

Cov xim hloov kho los ntawm offset luam ntawv number case Hoobkas feem ntau txawv ntawm cov qauv xim thaum nws siv hauv lub tshuab luam ntawv. Qhov no yog ib qho teeb meem uas nyuaj kom zam tsis tau kiag li. Qhov teeb meem nkaus xwb yog kom txo cov xim sib txawv. Dab tsi ua rau qhov teeb meem no, thiab yuav ua li cas txhawm rau txhim kho qhov tseeb ntawm cov xim sib xyaw hauv lub hoobkas?

1. Txoj kev luam ntawv: feem ntau cov tshuab luam ntawv siv cov tshuab luam ntawv me me uas tuaj ntawm Tebchaws Meskas. Lub mesh ntawm lub tshuab hom no yog nyob rau ntawm lub tiaj tiaj tiaj, thiab cov ntawv luam tawm tiav los ntawm kev txav cov ntawv luam tawm nrog ib puag ncig kev xav rau cov menyuam. Lub tshuab nyob rau hauv lub tshuab luam ntawv yog puag ncig Nyob rau hauv txoj kev nias puag ncig, lub mesh yog nyob rau hauv lub rotating circumferential roller. Muaj qhov sib txawv loj ntawm cov kab thiab cov kaum sab xis ntawm ob hom meshes, uas ua rau tib tus cwj mem, muaj qhov sib txawv loj ntawm ob txoj kev luam ntawv, qee zaum nws tsis yog qhov teeb meem ntawm cov xim tsaus thiab lub teeb, tab sis nws yog lub xim, lightness, thiab lwm yam uas yuav ua rau muaj qhov sib txawv loj. Qee lub tsev me me siv cov nplaum nplaum los xyuas tib yam, uas yog qhov phem dua. Siv lub tshuab ua pov thawj ntawm lub phaj ua lub Hoobkas los xyuas cov xim, cov nyhuv yuav zoo dua li ntawm cov ntawv luam tawm me me, tab sis tus nqi yog tib yam. Lub tshuab pov thawj no tuaj yeem ua rau tib lub phaj ntawm lub tshuab luam ntawv, thiab cov qib sib txawv thiab cov duab ntxoov ntxoo luam ntawv tuaj yeem tsim raws li qhov xav tau. Cov qauv, uas ua rau txoj kev luam ntawv yeej ib txwm zoo ib yam li ntawm lub tsev luam ntawv, thiab ib qho tseem ceeb uas cuam tshuam rau cov xim, cov ntawv luam ntawv kuj yog tib yam li ntawm lub tsev luam ntawv.

2. Phaj qhov tob: sib txawv prints muaj nyias phaj qhov tob. Lub Hoobkas tus cwj mem kev nkag siab lossis kev kwv yees ntawm lub phaj qhov tob uas siv los ntawm cov ntawv luam tawm kuj cuam tshuam rau qhov tseeb ntawm cov xim palette. Pom tseeb, yog tias lub tshuab luam ntawv siv 45μm sib sib zog nqus phaj rau xim sib xws, tab sis cov neeg siv khoom lub phaj me dua 45μm, cov xim luam tawm yuav sib dua, txwv tsis pub, nws yuav tsaus dua. Qee tus neeg xav tias tus number case raug kho raws li tus qauv tus cwj mem muab los ntawm tus neeg siv, thiab lub phaj qhov tob tuaj yeem tsis quav ntsej. Qhov tseeb, qhov no yog qhov kev xav theoretical, tab sis nws tsis yog qhov tseeb hauv kev xyaum. Hauv txoj kev xav, ob tus cwj mem zoo ib yam (xws li faib lub khob ntawm tus cwj mem rau hauv ob) muaj cov xim tib yam tsis hais seb lub phaj tsaus lossis lub teeb (lwm cov xwm txheej zoo ib yam). Tab sis nyob rau hauv qhov tseeb xim sib tov, nws yog tsis yooj yim sua kom sib tov lub pes tsawg tus number case, yog li feem ntau muaj xws li ib tug tshwm sim; Qee lub sij hawm cov xim ntawm cov ntawv luam tawm maj mam ze dua (uas tuaj yeem ua tau raws li cov neeg siv khoom xav tau), tab sis yog tias cov ntawv luam tawm tsaus dua, cov xim sib txawv yog ntau, yog li nws tseem ceeb heev kom paub qhov tob ntawm lub phaj. Qhov tob ntawm cov neeg siv khoom phaj yuav tsum tau siv los luam cov xim sib txuam.

3. Viscosity: Lub tshuab luam ntawv viscosity ntawm cov xim sib txuam ntawm lub Hoobkas number case yuav tsum zoo ib yam li cov luam ntawv viscosity ntawm tus number case thaum lub Hoobkas luam ntawv luam tawm tus number case. Qhov deb ntawm qhov sib txawv ntawm ob yog, qhov loj dua qhov sib txawv xim yuav nws thiaj li. Lub tshuab luam ntawv siv 22s rau kev kho xim, thiab cov neeg siv khoom siv 35s. Nyob rau lub sijhawm no, cov xim yuav tsum tsaus ntau, thiab vice versa. Qee lub tshuab luam ntawv tsis tau them nyiaj ntau rau qhov teeb meem no, thiab tsis hais txog qhov viscosity ntawm lub tshuab luam ntawv, lawv ib txwm sib piv cov neeg siv khoom tus qauv qauv (nrog rau cov qauv number case thiab cov qauv luam tawm) nrog cov viscosity sib txawv, uas ua rau muaj xim sib txawv.

4. Cov ntaub ntawv luam tawm: Qhov sib txawv ntawm cov ntaub ntawv siv hauv lub tshuab luam ntawv thiab lub tshuab luam ntawv (nrog rau lwm cov txheej txheem) kuj yuav ua rau muaj xim sib txawv loj. Qee cov inks yog luam tawm nrog ib txheej ntawm tus cwj mem dawb thiab xim yuav nyob ze rau cov neeg siv khoom luam tawm, thiab qee qhov yog qhov txawv. Qee cov neeg siv khoom tus cwj mem tsis tau hloov pauv ntau tom qab sib xyaw, thaum lwm tus tau hloov pauv ntau, xws li qee cov xim pob tshab. Yog li ntawd, thaum lub Hoobkas number case yog xim, nws yuav tsum paub meej txog cov neeg siv khoom cov txheej txheem. Qhov yooj yim tshaj plaws suav nrog: seb puas yuav luam ib tus cwj mem dawb thiab cov khoom siv dab tsi yog sib xyaw, Seb nws yog varnished. Kev hais lus theoretically, qhov ze dua ntawm kev luam ntawv ntawm lub Hoobkas number case rau xim sib xyaw thiab cov xwm txheej thaum lub tshuab luam ntawv siv tus number case, qhov tseeb ntawm tus number case ntau dua. Txawm li cas los xij, vim muaj kev txwv ntawm cov xwm txheej, tseem muaj ntau qhov sib txawv ntawm ob, xws li: luam ntawv ceev, xim saib ib puag ncig, luam ntawv siab rau cov menyuam siab, thiab lwm yam yog tsis tuaj yeem sib koom ua ke, tsuav yog cov plaub qhov no tswj tau, nws tuaj yeem txhim kho tau zoo heev. Qhov tseeb ntawm toning hauv lub tshuab luam ntawv.