Yog vim li cas rau kev nthuav dav ntawm kev tshaj tawm cov ntawv luam tawm thiab lawv tswj hwm
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.
Yog xav paub ntxiv, thov tuaj xyuas
http://www.joyful-printing.com. HMOOV nkaus xwb
http://www.joyful-printing.net
http://www.joyful-printing.org
email: info@joyful-printing.net
Txhawm rau sau cov xim qub thiab xub ua kom zoo dua qub, nws yuav tsum to taub qhov kev hloov ntawm lub sijhawm. Cov dot yog cov chav pib ntawm number case adhesion, uas plays lub luag hauj lwm ntawm conveying lub suab lus thiab kev tsim cov xim. Hauv offset luam tawm, cov teev yog qhov pib ntawm daim duab. Qhov hloov ntawm qhov teev yuav cuam tshuam rau lub suab lus thiab xim ntawm daim duab, uas yuav cuam tshuam cov duab ntawm daim duab. Yog li ntawd, tus yuam sij rau kev luam cov kev tswj kom zoo yog los tswj cov kev tshaj tawm ntawm cov ntawv luam tawm.
Qhov nthuav ntawm qhov nyiaj tau nce yog kev kho tshuab thiab kho qhov muag.
1. Cov neeg kho tshuab nplooj: Lub cwj mem txuas nrog rau cov hlau phaj nyaj yog deformed thiab nthuav los ntawm kev nias ntawm kev luam ntawv siab.
2. Optical dot enlargement: ua rau lub teeb pom kev zoo, thaum lub teeb ncav lub nto ntawm qhov teev, qhov tob ntawm qhov kev xav tau tshwm sim, thiab tus cwj mem nkag mus rau ntawm ntug ntawm cov ntawv sau ua vignette diffuse, uas tsim cov Hawj. Cov nyhuv yog tib yam li cov neeg kho tshuab dot enlargement thaum lub sijhawm luam tawm.
Kev nthuav ntawm ob qhov chaw no cuam tshuam qhov zoo ntawm cov teeb meem luam tawm los ua ntau theem, rhuav tshem cov nyiaj tshuav ntawm daim duab. Kom ua kom cov dots no rov qab los ntawm cov ntawv luam tawm, nws yog ib qho tseem ceeb los tswj cov txheej txheem ntawm cov dots (xws li, ib daim ntawv luam tawm, ib daim pam, thiab ib lub substrate).
Qhov nthuav ntawm kev tshaj xo txhais tau hais tias thaj chaw zoo ntawm lub substrate qhov Internet nkag kis tau loj tshaj qhov thaj tsam ntawm qhov ntsuas ntawm qhov kev ntsuam xyuas. Qhov no yog ib qho kev tshwm sim zoo li cas, txawm tias nws yog prepress ntau los yog luam ntawv yog kev tsis pom zoo. Txawm li cas los xij, nws yuav tsum tau tswj xyuas hauv qee yam. Thaum nws muaj ntau tshaj ib qho, qhov zoo ntawm cov ntawv luam tawm yuav raug teeb meem loj heev (gradation poob, nce ceev, xim distortion, thiab lwm yam), thiab qhov kev nce qhov tsis zoo no. GB7705-7 hais txog 50 feem pua ntawm cov kev tshaj tawm, qhov kev nce nqi ntawm cov khoom zoo yuav tsum tsis pub ntau tshaj 12%, thiab qhov nce qhov khoom ntawm cov khoom yuav tsum tsis pub ntau tshaj 18%. Hauv kev tsim ua ntej kev luam tawm thiab kev luam ntawv, nws yog feem ntau ua tau rau kev them nyiaj rau qhov kev ua tau zoo tshaj (piv txwv li laser photorangement, muab ob npaug ntawm qhov kev xav tau ntawm daim ntawv thiab qhov tsim nyog ntawm qhov tsim tau los ntawm kev luam printing), tiam sis txawv txav Qhov nce feem ntau tsis muaj cov cai tswj kom ua raws li, thiab tsim nyog them taus tsis tuaj yeem ua rau tus txheej txheem npaj ua ntej, uas tsuas tswj tau thaum lub sijhawm luam ntawv.
Ua ntej, Tsom xam cov xwm txheej uas cuam tshuam txog kev nthuav tawm ntawm qhov chaw
(1) Cov khoom siv
1. Phaj tseem ceeb
Cov duab tsis tshua tau ploj zuj zus. Ib txhia ntawm cov PS versions muaj thicker meshes, thiab ib txhia muaj poorer photosensitivity. Nws yog ib qho yooj yim rau kev tsim ib qhov tsaus muag nyob ib ncig ntawm cov dots tom qab kis. Tom qab ntawm PS daim ntawv cim, qhov tsaus muag tseem yog ib qho tseem ceeb. Cov nyhuv txov yog ntxiv rau qhov chaw ntawm qhov teev, ua rau cov hnub poob kom nce, thiab nws yog qhov yuav tsum hloov lub PS phaj nrog kev zoo dua.
Thaum lub sij hawm luam ntawv, cov laj thawj ntawm qhov nce hauv cov teev yog:
1.1 Cov kis raug mob tsawg dhau los los yog lub sij hawm raug luv heev, ua tsis tau tiav.
1.2 Tus tsim tawm yog fatigued thaum lub sij hawm kev loj hlob los yog cov pH ntawm tus tsim tawm tsawg dhau. Qhov tshwj xeeb tshaj yog nyob rau hauv kev cob qhia kev tsim, nws yog feem ntau yuav tshwm sim, vim tias tus tsim tawm tuaj mus rau saum huab cua, nws yog ib qho yooj yim rau hnov mob nrog carbon dioxide nyob rau hauv cov huab cua.
1.3 Lub sij hawm kev loj hlob yog luv luv (lub khij nyuab ntawm lub phaj no tsis yog yaug tag nrho), los yog kev kub ntxhov siab dhau lawm, yog li ntawd txoj kev txhim kho qeeb qeeb. Kev xyaum tau pom tau hais tias txhua 5 qib kev txo qhov kev txo qis dua, txoj kev loj hlob yuav raug txo los ntawm 1 mus rau 2 zaug.
Kev pom zoo, kev kub hnyiab, thiab kev loj hlob yuav siv tau thaum lub sijhawm luam ntawv, thiab qhov kev nce nqi tuaj yeem tswj tau. Tsis tas li, thaum qhov kev kub ntxhov hlob tsis dhau, kev loj hlob lub sijhawm yog tsim nyog txuas ntxiv. Nws raug pom zoo tias txhua daim npog PS yuav tsum muab luam tawm nrog lub nplhaib tom qab nkag mus rau hauv lub Hoobkas los kuaj qhov zoo tagnrho thiab raug lub sijhawm, uas yog qhov yooj yim rau kev tswj tus qauv ntawm cov ntawv phaj.
2. Daws teeb meem
2.1 number case cohesion tsawg dhau
Thaum lub cohesion (viscosity) ntawm tus cwj mem tsis muaj zog, tus number case rov qab yuav qaug zog, ua qhov teeb meem ntawm cov teeb meem luam tawm thiab kom muaj tus cwj pwm kis. Nyob rau hauv tus txheej txheem ntawm number case hloov, thaum tus cwj pwm zaj duab xis tawg mus ua filaments thiab tawg, tom qab lub teeb meem tensile disappears, nws tsuas relies on viscosity thiab elasticity kom rov qab mus rau lub xeev ua ntej stretching. Nyob rau hauv cov txheej txheem ntawm kev rov qab ua kom rov qab ncav, vim cov yeeb yaj kiab tsis muaj kev ntxhov siab, nws tsuas tos tau cov kev nqus xwb. Qhov tshwm sim yog tsis sib txig sib luag zaj duab xis, ntug diffusion, tsis muaj qhov tsis zoo, thiab qhov kev nce nqi. Qhov no yog qhov tshwm sim tsis tshua muaj tshwm sim. Restore txheej xwm. Kev rov qab ywj pheej yog qhov rov qab los ntawm lub zog hluav taws xob ntawm cov zaj duab xis txheej. Tus cwj mem yog rho tawm rov qab los ntawm lub zog ntawm lub zog los yaug vim yog thaum muaj kev ntxhov siab hauv cov yeeb yaj kiab sab hauv.
Thaum lub cohesion ntawm tus cwj pwm tsis dhau, tus peev xwm rov qab los ntawm kev ywj pheej yog tsis muaj zog, thiab tsuas yog nyob ntawm kev rov qab ua kom rov qab, uas ua rau kom muaj qhov nce ntxiv hauv qhov loj. Yog li, ntau yam khoom siv yuav tsum tau siv tsawg li sai tau hauv cov luam ntawv kom tsis txhob txo cov cohesion ntawm tus number case. Yog tias muaj ib qho teeb meem nrog tus number case, nws muaj qee qhov cim dig los tsis suav. 0 varnish tej zaum yuav ntxiv rau qhov tsim nyog.
2.2 npev viscosity tsawg thiab cov kua fluidity yog siab dhau heev lawm
Cov kua roj carbon dioxide yog ib yam tseem ceeb heev, thixotropic thiab yield qhov tseem ceeb me me, cov viscosity tsawg dhau, tus number case ntev dhau lawm, qhov fluidity muaj zog heev, thiab dampening ntau dua yuav tsum tau lwv nrog nws thaum luam ntawv. Emulsified tus cwj pwm yog yooj yim mus kis rau ntawm PS phaj, uas nyhav ua rau qhov teev kom nce. Hloov mus rau lub substrate tsis yog qhov zoo rau cov ntaub ntawv pov thawj ntawm tus cwj pwm, thiab ib daim duab mesh tsis tuaj yeem tau txais.
3. Cov kev sib raug zoo ntawm cov ntawv thiab qhov dot enlargement
Daim ntawv saum npoo tsis yog tag nrho tus. Muaj ntau yam pits thiab capillary qhov. Thaum luam ntawv, tus number case yog thawj zaug hauv qab ntawm qhov siab ntawm lub qhov dej, thiab tus lej ntxiv uas yog kis mus rau lub periphery ntawm cov teev. Cov ntawv pov thawj ntawm daim ntawv nyob ntawm cov npoo ntawm daim ntawv, xws li tus lej number case absorbed thiab tau txais. Qhov ceev qhov haum, qhov ntau dua qhov uas cov ntawv luam tawm yog loj dua. Tus nqi ntawm cov ntawv cim absorbs number case plays lub luag hauj lwm tseem ceeb nyob rau hauv qhov ntawm qhov nce ntawm qhov nce. Qhov siab dua tus smoothness ntawm daim ntawv, qhov me me qhov poob nyiaj nqi; qhov txo qhov smoothness ntawm daim ntawv, qhov loj dua ntawm qhov txiaj ntsim nce nqi. Hauv kev luam ntawv, coated daim ntawv tau txo qhov tsis txaus ntawm cov ntawv tsis-coated, cov ntawv tsis-coated muaj kev ua haujlwm siab, thiab siab absorbency tau nyob rau hauv cov feem pua ntawm qhov hnyav. Txawm hais tias nws yog tib yam li daim ntawv coated, smoothness ntawm daim ntawv nws txawv heev nyob ntawm qhov chaw ntawm ntau lawm. Kev daws qhov teeb meem uas tshwm sim los ntawm qhov sib txawv no tsuas yog tuaj yeem ua tiav los ntawm kev kho qhov siab ntawm kev luam ntawv.
Cov nyhuv ntawm daim ntawv rau dot enlargement tseem muaj kev cuam tshuam rau hauv ob chav reflection nyhuv ntawm daim ntawv. Tom qab cov dots sau rau ntawm daim ntawv, feem ntau ntawm lub teeb dawb ntawm daim ntawv yog reflected, tab sis feem ntau ntawm cov teeb dawb yog absorbed los ntawm cov ink txheej, thiab qhov seem ntawm lub teeb yog reflected los ntawm daim ntawv nto thiab reflected ntawm tus number case txheej mus ua diffuse reflection lub teeb. Nyob rau hauv qhov kev txiav txim ob ntawm daim ntawv xav txog thiab diffuse xav txog, ib lub voj voog halo yog tsim ntawm ntug ntawm cov teev, uas ua qhov muag pom kev loj. Nyob rau hauv qhov tseeb, cov dots tsis nthuav, tab sis lub illusion ntawm dot enlargement. Yog hais tias qhov saum npoo ntawm daim ntawv yog qhov sib txawv, lub teeb pom kev zoo loj, qhov sib txawv ntawm qhov tsis zoo yog tsis loj, thiab qhov kev xav ntawm ob chav yog me me.
4. Kev sib raug zoo ntawm daim pam thiab qhov hnoob nyoog
Ua ib qho nruab nrab rau number case hloov ntawm daim ntawv luam, daim pam muaj cov yam ntxwv ntawm muaj zog elasticity thiab zoo lipophilicity. Nws deforms thaum raug rau siab thaum lub sij hawm luam ntawv. Nyob rau hauv qhov kev txiav txim ntawm kev luam ntawv siab, tus cwj mem xaj yuav nthuav dav rau ntawm qhov chaw ntawm lub sijhawm. Nyob rau tib lub sijhawm, vim yog lub cev deformation ntawm daim pam, ib tus txheeb ze txheeb ze tshwm sim ntawm daim txiag phaj thiab daim pam, ntawm daim pam thiab daim ntawv. Vim qhov kev nthuav tawm thiab kev slippage saum toj no, lub o ntawm qhov dots yog inevitably los. Qhov no yog qhov tseem ceeb tshaj nyob rau hauv kev nthuav tawm ntawm cov kev tshaj tawm hauv lithography.
Daim pam poom tau muab faib ua ib daim pam thiab ib daim pam. Yuav kom tswj tau tus nqi ntawm qhov teev kom tsawg li tsawg, qhov ceev ntawm cov dots yog zoo tib yam, thiab qhov muag yog du, nws yog qhov tsim nyog los debug qhov tseeb qhov siab, thiab xaiv ib daim pam nrog cov ntawv luam tawm zoo. Lub pawm ntawm lub thawv cua txias muaj cov ntawv luam tawm zoo tshaj plaws, thiab muaj lub peev xwm loj loj thiab ib qho me me ntawm kev sib deev. Thaum zoo tib yam ntawm compression, lub thawv cua pam yog siv los hnia tsawg dua cov pam tuag plob tsis so qub, yog li ntawd, cov nyiaj poob haujlwm tseem tsawg. Yog siv daim pam pav yaus, ib sab tawv siv yog vim lub qhov pleev phom sij yog ib qho khoob khoob loj, ib qho me me ntawm qhov kev sib hloov ntawm lub cev thiab lub cheeb tsam ntawm lub txiv mis, thiab qhov zoo tshaj plaws ntawm reproducibility.
Nrog ib daim pam uas zoo tshaj plaws ntawm cov ntawv luam tawm thiab sab xis, nco ntsoov ua kom lub ntsej muag huv ntawm daim pam ntxuav. Tiv thaiv cov pam ntawm cov pam ntawm lub conjunctiva thiab oxidize tus conjunctiva, smoothing lub nto thiab cuam tshuam lub lipophilic hydrophobic zog hauv cov roj hmab txheej ntawm daim npog ntawm daim pam. Thaum cov txheej txheem luam ntawv, cov pam ntawm daim npog yog npog los ntawm cov ntaub ntawv, cov hmoov hmoov, cov xim hauv cov cwj pwm, kev ua kom tsis haum, kev pov tseg, thiab lwm yam khoom, thiab kev sib txhuam rau lub sijhawm ua haujlwm ceev, uas yog txo cov kis ntawm daim pam . Kev ua rau ntawm tus cwj pwm, ua rau qhov muag plooj, thiab qhov tshwm sim ntawm floating rau hauv av, ncaj qha rau qhov zoo tshaj ntawm cov ntawv luam tawm, yog li ntawd nws yog ib qho tsim nyog yuav tau ntxuav ntau zaus kom lub pawm ntawm daim pam ntxuav thiab siv nws qhov zoo tshaj plaws nyhuv. Daim pam no dhau lawm los yog muag muag kom nce siab ntawm cov phom khawm thiab pam poom, pam lub tog raj kheej thiab lub tswv yim kheej kheej kheej (lub pawm lub pawm pob lub npoo yog ob qho tib si hloov tus kheej thiab cov khoov lub tswv yim), thiab qhov kev sib hloov ntawm cov Daim Npog Qhov dav ntawm qhov sib tiv tauj yog loj, qhov tsis zoo ntawm qhov taw qhia tsis zoo, qhov kev rov ua dua ntawm qhov poob yog qhov tsis zoo, thiab qhov txiaj ntsim ntawm qhov poob siab yog qhov siab.
(2) Luam lwm yam thiab kev lag luam
1. Txiav txim siab ntawm kev luam ntawv siab
Ob qhov kev hloov ntawm tus cwj mem thiab kev xa tawm ntawm luam tawm thaum luam ntawv yuav tsum muaj kev tso siab rau kev tsim, thiab cov deformation ntawm cov dots thiab deformation ntawm daim pam los ntawm tus cuj pwm ua kom deformation thiab loj hlob ntawm cov dots. Yog li, thaum luam qhov PS version, nws yuav tsum tau muab cov qauv sib txawv (sib txawv printers muaj txawv dot nce qhov tseem ceeb) xaiv lub sij hawm tsim nyog, yog li ntawd cov dots ntawm PS phaj yog me ntsis me dua cov pov thawj, thiab cov luam tawm tau ua raws li cov pov thawj. . Nyob rau hauv kev txiav txim ntawm kev luam ntawv siab, tus number case yuav nthuav tawm sab nraud. Yog tias lub tshuab luam ntawv siab siab heev, qhov kev nce nqi yuav tshwm sim. Yog li, lub tshuab luam ntawv yuav tsum nruj me ntsis tswj. Rau cov ntawv uas muaj ntaub npog ntsej muag (coated paper), yuav tsum tswj cov khoom ntawm 0.10 thiab 0.15 hli, thiab daim ntawv uas tsis tshua muaj qhov sib npaug (offset paper) yuav tsum tswj kom muaj ib qho compression ntawm 0.2 hli. Lub hauv paus ntsiab lus ntawm kev tswj yog siv raws li me ntsis printing siab raws li ua tau ntawm qhov uas ua kom muaj kev hloov zoo ntawm tus cwj mem.
2. Cov kev sib raug zoo ntawm kev luam ntawv siab thiab kev poob haujlwm
Qhov txo ntawm qhov kev xav tau yuav tsum yog los ntawm kev luam ntawv siab, lub tshuab luam ntawv ncaj qha cuam tshuam rau kev hloov ntawm cov cwj mem, thiab nws yog qhov tseem ceeb heev uas yuav tau kho qhov haujlwm ntawm kev luam ntawv. Thaum lub tshuab luam ntawv tsawg dhau lawm, lub tshuab luam tawm tsis tuaj yeem hu cuag, thiab cov quab yuam ntawm cov xaum xoom thiab daim ntawv me me. Tsuas yog tus nqi tsawg ntawm cov zauv rau hauv daim ntawv, cov ink number conversion yog tsawg heev, thiab cov ntawv luam tawm yog lub teeb xim. Thiab muaj ib qho "ploj tshwm", thiab txawm daim duab tsis tiav. Yog tias lub tshuab luam ntawv loj heev, tus cwj mem yuav muab tso rau hauv qhov chaw seem ntawm sab nrauv. Ntawm qhov one hand, qhov teev yuav loj tuaj thiab cov duab yuav plooj; ntawm qhov tod tes, tus lej number case hloov tseem yuav qhia tau tias muaj kev sib sib zog nqus, ua qhov teeb tshwm dub. Ntshiab, qhov chaw ntawm lub tshav pob thiab cov dots tsis tuaj me nyuam cov xim.
Lub tshuab luam ntawv siab tsis ruaj khov, tus cwj mem yog muab xa mus, thiab qee zaus nws tsis txaus. Kev tsim kho lub suab nrov thiab kev luam xim ntawm cov ntawv luam tawm tsis tuaj yeem ua raws li cov kev xav tau, thiab cov ntsiab lus zoo tshaj plaws tuaj yeem tau txais los ntawm cov ntawv luam tawm xwb. Xaiv lub tshuab luam ntawv txoj cai yog ib qho tseem ceeb ntawm txoj kev luam ntawv. Qhov kev txiav txim siab ntawm kev luam ntawv, ntxiv nrog rau cov khoom siv ntawm lub tshuab, nws muaj feem xyuam xim, ntawv, dampening kua, pam, number plam, luam ntawv ceev thiab lwm yam khoom siv hauv kev luam ntawv, vim cov kev hloov me ntsis hauv cov luam ntawv tej yam kev mob yuav tsum Hawj muaj qhov txiaj ntsig. Yog li ntawd, thaum lub sij hawm luam ntawv, nws tsim nyog yuav tau kho raws li cov ntaub ntawv luam tawm kom tau lub siab nyiam printing.
3. Cov kev sib raug zoo ntawm kev luam cov lej thiab kev loj hlob
Cov kev hloov hauv kev khiav ceev ncaj nraim rau qhov zoo ntawm cov khoom. Thaum lub tshuab luam ntawv tau muab tso rau qee cov ntaub ntawv, lub tshuab luam ntawv qis dua qeeb, lub sij hawm hu nruab ntug ntawm cov luam tawm ntev ntev, kev tiv tauj ntawm lub tshuab luam ntawv yog txaus, tus lej xa mus rau ntawm tus cwj pwm yog siab, cov ink dots tag nrho, thiab tus cwj pwm xim muaj xim zoo nkauj. Thaum lub sij hawm luam ntawv nce siab, lub sij hawm sib txuas nrog rau lub tshuab luam ntawv yuav luv luv, lub tshuab luam ntawv tsis txaus los hu, tus number case hloov yog tsawg, cov teev yog tsis muaj ntxais ntxhe, thiab daim duab yog dawb. Yog hais tias lub zauv luam ntawv tsis ruaj khov rau hauv ib pawg ntawm cov khoom luam tawm, tus number case xim yuav tsis sib haum ua ntej thiab tom qab.
4. Muab cov ntaub ntawv xa tawm tuaj yeem cuam tshuam cov kev tshaj tawm
Kev hloov ntawm tus cwj mem yog muab los ntawm ib tus cuav quav rau tus kheej. Tus number case yog pauv los ntawm tus cwj mem kua number case rau cov tub lag luam uas muaj kev sib tshuam los ntawm kev hloov tus menyuam. Nyob rau hauv qhov kev txiav plaub ntawm tus cwj mem tawm ntawm cov quav, cov thixotropic phenomenon tshwm sim, cov qauv yog tag nrho puas lawm, thiab cov yeeb yaj kiab raug muab txuas mus rau hauv ib lub yeeb yaj kiab, uas kis tau mus rau lub phaj ntawm cov ntawv xov xwm los ntawm tus cwj mem. Kev faib tawm ntawm tus cwj pwm zaj duab xis ntawm tus cwj pwm number case muaj ib txoj cai nruj heev. Tsuas yog cov cwj mem thaiv kom zoo rau lub koob ntim quav, thiab tus cwj mem xaj yuav ua tau tujtaws thiab sib kis mus rau lub phaj ntawv. Cov cwj mem muab zis tso rau ntawm daim ntawv luam tawm thiab daim pam, thiab muab cov pam thiab daim ntawv pov tseg. Tus number case txheej ua tom qab ob extrusions feem ntau heev nyias. Yog hais tias tus number case txheej yog tuab, qhov teeb meem ntawm dot enlargement tshwm sim. Nyob rau tib lub sijhawm, qhov nyuaj ntawm cov menyuam rubber yuav tsum tau ua raws li cov kev cai. Cov nplais ntawm cov yas rubber yuav tsum tsis txhob vitrified. Nws yuav tsum muaj tus cwj pwm zoo hloov kev kawm, yog li ntawd cov dot ntawm lub phaj luam ntawv muaj txaus tus cim absorption.
Hauv kev txiav txim siab rau tus cwj pwm rau kev hloov ntawm tus cwj pwm ntawm cov tub ntxhais mus rau lub phaj ntawv, tus number case no kuj yuav tsum tau muaj cov dej fluid zoo. Nyob rau hauv kev txiav txim ntawm kev nplawm los yog kev ua txhua yam, tus cwj mem xiav yuav dhau los ua kom muag muag thiab cov kua fluid yuav nce. Hloov qis qis dua, thiab tom qab lub sijhawm tsis muaj zog, lub cev tseem yuav rov qab los. Qhov tshwm sim no yog hu ua thixotropy ntawm tus number case. Yog li, yuav xyuas kom meej tias cov cwj mem muaj peev xwm yuav thauj tau zoo, tus ciam kua muag muaj ntau zaus. Lub thixotropy ntawm offset inks yog siv los ua kom muaj zog ntawm cov phev thiab kom paub meej tias cov dots muaj peev xwm ua kom tiav cov xim yam xav tau.
5. Txuas mus hloov cov twj tsis zoo kho
Txoj hauj lwm txheeb ze ntawm tus cwj mem xauv pauv hloov, thiab lub zog ntawm lub caj dab thiab lub khawb kuj hloov, uas ua rau muaj kev puas tsuaj rau tus cwj pwm hloov kev sib raug zoo. Qhov siab ntawm cov phaj cov phom yog hnyav, qhov deformation loj yog loj, qhov kab ntawm lub rubber rau menyuam yog thinner, txoj kab ceev ntawm phaj rau cov menyuam thiab cov phaj cov phom yog inconsistent, thiab cov taw mesh yog elongated hauv cov kev coj ntawm kev ncig ntawm cov menyuam yaus ua rau lub cev deformation. Lub siab ntawm lub phaj los ntawm cov phaj lab loj yog loj, ua rau tus number case rau hauv lub phaj raws li nws kis tau los ntawm tus number case rau cov phaj. Yog li ntawd, nws yog ib qhov tsim nyog los nyeem qhov siab ntawm lub phaj los ntawm cov phaj lab. Kev hnav cov cuab yeej ua rau lub sijhawm kom nce, xws li nce ntawm qhov teeb meem tshwm sim los ntawm kev hnav cov iav, uas feem ntau yog tus xaj xaj thiab duab dab neeg. Tshuaj: Feem ntau, qhov kis ntawm cov hniav yuav raug txo kom tsawg yam tsis muaj cov hniav sab saum toj.
6. Tus lej ntawm tus lej yog loj heev
Nyob rau hauv tej yam kev mob uas zoo tag nrho, lub thickness ntawm tus raug xa tawm hauv plhaub txheej yuav tsum tau tswj li ntawm 25 μm. Raws li tus nqi ntawm tus number case yog nce, thickness ntawm tus number case zaj duab xis yog nce, thiab cov kev sib cais quab yuam kuj nce nrawm. Cov cwj mem ntau dhau tsis tuaj yeem muab pauv mus los ntawm lub substrate, thiab ntau tus cwj mem zwm ntawm cov ntawv xov xwm thiab daim pam, thiab tus cwj mem ntau dhau diffused sab nraum cov teev. Cov dot yog loj dua thiab txawm tias tus muab tshuaj yog tsim, yog li tus lej ntawm tus cwj pwm yuav tsum muab coj los txiav txim raws li cov ntawv sau.
7. Tswj kev siv tshuaj dampening
Cov phaj luam ntawv muaj ib qho dej me me, yog li ntawd cov dej ntim hauv qhov tsis muaj peev xwm tsis thev qhov kev tawm tsam ntawm lub plhaub ntim quav rau ntawm lub dot. Tshuaj: Kho cov dej ntawm cov phaj dej kom nws hloov tau dej rau tus dej kom zoo thiab txhaws, los yog nce cov tshuaj tsis haum los yog dampening kua. Txawm li cas los xij, yog hais tias cov tshuaj dampening ntau dhau los yog tsawg dua, qhov loj me yuav nce tuaj. Yog li, qhov nyiaj dampening yuav tsum tau tswj kom zoo thaum lub sij hawm luam ntawv, thiab cov pH ntawm kev daws teeb meem yuav tsum tsis pub dhau ib qho tsim nyog. Nruab nrab ntawm 4.8 thiab 5.3. Hauv kev luam ntawv, nws yog qhov tsim nyog kom tsim nyog raws li txoj cai tiag tiag. Piv txwv li, yog tias siv cov tshuaj tua tau siv hauv tus cwj pwm, cov pH ntawm cov tshuaj tsis haum yuav tuaj yeem txo qis dua. Txawm li cas los xij, nws yuav tsum tswj cov emulsification ntau heev ntawm tus cwj pwm kom tiv thaiv cov duab cwj pwm ntawm cov dot los ua tau kom muaj ciam kuj zoo meej nrog cov seem ntawm daim ntawv, ua rau muaj kev nce rau hauv cov teev daig, thiab qhov nyiaj ntawm cov ciav dej los yog cov hmoov nplaum yuav ua kom txo tau.
8. Kev rhuav tshem ntawm daim pam
Vim yog lub tsho loj heev ntawm daim pam, tus txha nqaj hlais tshwm sim ntawm cov phom luam thiab daim pam, ntawm daim pam thiab lub substrate, ua rau cov hnub poob nce. Yog li, thaum kho lub siab ceev thiab hloov chaw nruab nrab ntawm lub nruas, qhov ceev ceev ntawm lub nruas yuav tsum yog kev hnav zoo li ua tau. Txawm li cas los xij, nws tsis tuaj yeem ua raws nraim li, vim tias qhov ceev ceev ntawm pam pwm nws tus kheej yog inconsistent vim yog lub compression ntawm daim pam. Daim pam tsis nruj txaus los yog muaj kev tsis txaus siab. Tom qab daim pam tshiab sau rau ntawm lub tshuab rau tsib lossis rau txhiab nplooj ntawv rau thawj zaug, zawm daim pam ib zaug dua. Tom qab luam tawm ib los yog ob nplooj nplooj ntawv, rub daim pam ib zaug ntxiv.
Thib ob, qhov ntsuas ntawm tus nqi loj ntawm qhov hluav taws xob
Muaj ob txoj kev los ntsuas qhov teev tau qhov nce nqi: ib qho yog qhov kev xav ntawm qhov kev ntsuam xyuas densitometer, thiab ib qho yog Brunel luam ntawv ntsuas ntsuas txoj kev ntsuas.
1. Qhov kev xav ntawm qhov kev ntsuam xyuas densitometer siv cov formula Murray-Davies los xam qhov teev qhov muaj nqis tom qab ntsuas qhov ceev ntawm densitometer, thiab muaj peev xwm ua tau ntau qhov kev ntsuam xyuas kom paub cov ntaub ntawv luam tawm thiab kev tsim qauv. Qhov poob ntawm tus nqi yog qhov sib npaug ntawm qhov chaw sau rau ntawm qhov teeb meem tawm ntawm qhov chaw tawm ntawm qhov chaw nyob ntawm daim phaj (daim film siv luam ntawv).
Murray-Davies xam cov mis li:
Qhov twg: qhov ntom ntawm qhov density ntawm ib sab yuav tsum tau soj ntsuam ntawm qhov teeb meem tshwm sim, tus nqi ntawm qhov sib txawv ntawm qhov teeb meem ntawm cov ntawv luam los yog cov ntsuas kab, thaj tsam ntawm cov dot ntawm ib feem yuav raug kuaj hauv cov ntawv luam tawm, thaj chaw tseem ceeb ntawm ib feem yuav raug kuaj xyuas ntawm qhov teeb meem luam tawm, thiab qhov muaj nqis ntawm qhov teev.
2. Kev ntsuam xyuas kev sib txhuam ntawm brunel thiab kev tswj kev ntsuas qhov ntsuas. Brunel kev hloov pauv muaj nplua mesh ntu ntawm 60 kab / cm thiab ib daim tawv mesh ntawm 10 kab / cm, thiab qhov 50% dot cheeb tsam ntawm cov nplua mesh thiab cov ntxhib mesh sib npaug. Qhov piv ntawm cov kab uas muaj tus kab mesh thiab cov ntxhib ntxoo ntse yog 6: 1, uas yog, qhov ntev ntawm qhov ntev ntev ntawm cov nplua mesh mus rau ntawm ntug ntev ntawm lub ntxhib ntsej muag yog 6: 1. Vim tias qhov nyiaj tau nce npaum li cas mus rau ntawm qhov ntev ntawm qhov teev, qhov ceev ntawm qhov raug nplua yog loj thiab qhov ceev yog loj nyob rau hauv tib lub mob. Thaum ntsuas, noj cov kev sib txuas lus sib txawv raws li qhov kev sib tham thiab kev sib txawv ntawm qhov sib txawv ntawm qhov kev sib txuas ntawm lub network thiab cov kev sib tshua lus sib txuas, qhov 50% dot area expansion nqi tuaj yeem tau txais. Nws muab xam cov mis yog:
= 50% nplua mesh ntu ceev - 50% coarse ntu ceev
Raws li Brunel txoj kev tshawb fawb, qhov formula rau xam qhov poob ntawm tus nqi kwv yees li ntawm 75% yog:
= (75% nplua mesh ntom ntom ntom ntom - 75% coarse ntu ceev) ÷ 2
Qhov muab xam rau cov txiaj ntsig ntawm qhov tau nce txog 25% yog:
= (25% nplua mesh ntu ntom ntom nti - 25% coarse ntu ceev) × 2
Qhov peb, qhov kev nthuav tawm ntawm kev ntaus ntawv ntawm kev ntaus tawm network
Txawm tias qhov txiaj ntsim ntawm qhov poob yog kev tsis pom zoo, nws tswj tau. Raws li ib txwm muaj, qhov nyiaj tau zoo tshaj ntawm cov ntaub ntawv yog qhov tsawg tshaj li 12%, cov ntawv luam tawm tsawg dua 18%, thiab cov ntawv xov xwm luam ntawv yog tswj li ntawm 35% (feem ntau raug xa mus rau 50% dot). Hauv txoj kev ua ntau yam, nws tuaj yeem raug tswj tau los ntawm cov hauv qab no.
1. Xaiv cov phaj siab zoo, tswj kev tsim nyog ntawm lub sij hawm raug thiab kev tsim tawm
Cov ntawv luam tawm tau meej meej thiab cov dots muaj zog, yog li los xyuas kom meej cov nyhuv hloov ntawm cov dots, thiab los xyuas kom meej tias cov phiaj muaj lub siab ntev printing. Feem ntau, 5% ntawm qhov chaw tawm tsis ploj, thiab 95% ntawm qhov chaw tawm tsis yog qhov muag plooj.
2. Khwv yees tswj tus cwj mem thiab dej tshuav nyiaj txiag
Hauv cov txheej txheem luam ntawv, yog cov dej tsis loj heev, tus nqi ntawm tus cwj pwm nkag mus rau qhov tsim yuav nce ntxiv, tus lej txheej yuav ua rau tuab, thiab tus cwj mem yuav tsum emulsified tiag, ua rau muaj kev npau taws thiab npau taws. Hauv cov txheej txheem tsim, kom txo tau cov khoom pov tseg, cov dej theem feem ntau yog nce mus txog 150% ntawm tus nqi qub thaum pib. Thaum lub luam ntawv tsis muaj dab tsi, cov dej ntau yuav tsum maj mam txo qis rau qhov nqi qub kom ntseeg tau tias cov duab nruj meej, nplua thiab ci ntsa iab.
3. Tswj ntau yam kev ntxhov siab hauv kev tsim nyog
Lub siab ntawm lub phom lub tog raj kheej thiab daim pam kheej lub plhaub yog tswj tau 0.15 mus rau 0.20 hli, thiab nws yog qhov tseeb tias ob daim ntim ntawm daim npog sab nraud rau lub phom lub plhaub, thiab cov tog taub hau kheej thiab cov phom khawm muaj ib txoj kab uas siv 100 mm los yog tsawg dua muaj qhov dav ntim ntawm 3 ~ 4 hli, cov menyuam yau luam tawm nrog ib txoj kab uas siv 100 mm los yog ntau tshaj ntawd thiab cov phom plhaub tiab loj yog 5 ~ 6 hli.
4. Ua kom tswj cov ntsiab lus ntawm dampening tov
Kev tswj ntawm qhov concentration ntawm cov kua hauv plawv yog lub luag haujlwm tseem ceeb hauv qhov seem ntawm tus number case thiab qhov zoo ntawm cov ntawv luam tawm. Ib qho kev tsis haum ntawm dampening daws tau sai sai ntxuav cov "av" nyob ib ncig ntawm cov dots. Yog hais tias cov concentration ntawm dampening kua yog tsawg, tus number case ncig ntawm cov teev tsis tau raug tshem tawm, uas yuav ua rau cov teev kom nce, thiab cov tshuaj muab yuav ua rau muab tshuaj; Yog hais tias cov concentration ntawm dampening tov yog siab dhau, lub phaj luam ntawv ntawm PS phaj yuav raug txo thiab lub dampening daws yuav ntau heev ntawm pov tseg. Feem ntau, cov pH ntawm cov tshuaj tsis haum yog tswj ntawm 4.0 mus 6.0, thiab cov conductivity yog tswj ntawm 1400 ± 200 μs.