Qee yam tsim nyog los txhim kho kev siv tshuab thaij duab
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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Nrog kev vam meej ntawm kev noj kev haus ua lag luam, lub ntim ntawm cov khoom ua tau ntau dua thiab ntxhov siab ntau. Cov xim thooj xoos tau ua ntau dua thiab nrov dua cov tub lag luam. Cov xim tha xim (nrog rau xim thawv ntawv) tus account rau ntau thiab ntau qhov sib koom ua lag luam, thiab kev tswj cov khoom thaev. Tsis tas li ntawd attracted cov xim ntawm lub lag luam. Kev txhim kho qhov zoo ntawm cov kob zoo corrugated thawv tau los ua ib qho ntawm cov tswj kev tswj ntawm lub thawv Hoobkas ntau lawm txoj kev tswj. Txhua lub sijhawm hauv cov thawv uas muaj xim dawb, muaj kev sib txuas ntawm cov khoom siv rau kev lag luam, cov khoom siv ua haujlwm, cov phaj, qauv ntawv zoo, xyuam xim rau ntawm qhov muag Nyob hauv txhua qhov txuas, tswj kev tswj hwm thiab kev tswj hwm tau muab coj los txhim kho kom zoo dua cov ntawv luam ntawm cov xim tha xim thiab ua tau raws li cov neeg yuav tsum tau ua.
1. Ua tib zoo xaiv cov qauv txheej txheem luam ntawv
Nyob rau hauv tus txheej txheem ntawm kev yuav thiab txheej txheem, cov xim tha xim khoom muag yuav tsum xub xav txog cov txheej txheem cov khoom siv, uas yuav zoo dua cov ntawv luam ntawm cov khoom siv. Tus kws sau ntawv ntseeg hais tias cov txheej txheem kev npaj cov ntawv qhwv ntawv thiab kev luam ntawv yuav tsum txiav txim siab raws li cov yam ntxwv ntawm tus tseem ntsiab. Ntawm lawv, cov xwm txheej uas yuav tsum tau xam nrog rau: kev luam ntawv, tus yam ntxwv ntawm daim ntawv xub thawj, kev ua tus lej cim, cov txheej txheem, thiab hom khoom siv. Cov txheej txheem ntau yam qhia tau hais tias qhov chaw ntawm cov txheej txheem luam ntawv ntawm cov xim thaij duab yog qhov txuas ntawm qhov kev txiav txim siab txog kev ua haujlwm thiab cov luam ntawv zoo ntawm cov khoom, thiab qhov tseem ntawm cov khoom tswj kev lag luam. Xaiv cov txheej txheem luam ntawv yog ib qho tseem ceeb rau kev tiv thaiv kev luam tawm tsis zoo thiab txo qhov kev cia siab ntawm cov ntawv luam ntawv nyoos thiab ntu. Yog li ntawd, rau ib qho xim thaij nrog ib qho txheej txheem them me me, nws yog qhov kev siv ua ntej kev luam ntawv luam tawm. Ntawm lawv, qhov lithographic pre-printing txheej txheem yog yooj yim thiab yoojyim, thiab muaj peev xwm luam tawm cov qauv yooj yim thiab luam tawm cov qauv zoo nkauj, uas yog tus nqi tsawg thiab tsim nyog luam tawm ntau tshaj 100,000 nplooj ntawv. Thaum lub tshuab luam ntawv flexographic luam tau yooj yim, ua rau cov ntaub ntawv phaj nyaj tseem kim heev, thiab cov ntawv sau qhia tsis zoo thiab tsis yog zoo li kev lithographic printing, vim li ntawd nws yog tsim rau kev luam tawm xim tha xim, thiab yuav tsum ua nyob rau hauv ib lub khoom loj loj ntawm cov khoom kom offset Tus nqi ntawm kev tsim lub phaj yog siab. Cov txheej txheem gravure pre-printing yog nyuab dua hauv phaj txiav, thiab cov phaj ua tus nqi tseem yog txheej txheem ntau tshaj plaws. Txawm li cas los xij, cov ntawv xov xwm luam ntawv muaj ntau dua cov qauv ntawm kev lag luam, thiab yog qhov zoo rau kev luam tawm tuab thiab nplua xim ntawv, tsim rau kev teeb tsa kev ruaj khov. Ua ntej luam tawm ntawm cov ntawv thaij duab ntev ntev nrog rau ntau cov khoom tsim tawm. Rau cov khoom uas muaj qhov ntim me me, qhov tsim qhov yooj yooj yim thiab tsis tshua zoo, ib lub tshuab luam ntawv slotting tshuab tuaj yeem xav kom tiav cov ntawv luam ntawm corrugated cardboard ib zaug. Xaiv cov xim thaij duab luam tawm, ob qho tib si los ntawm lub koomhaum qhov teeb meem, tab sis kuj xav txog qhov khoom ua tau zoo thiab cov kev cai; tsis tsuas yog kom txo cov nqi tsim nqi, txo cov nqi tsim tshuaj, tab sis tseem xav txog yuav ua li cas kom zoo dua qhov luv lub voj voog, Nws yog ib qho tseem ceeb uas yuav tsum ua kom tau raws li cov kev xav tau ntawm cov neeg siv khoom.
2. Tswj cov phaj ua cov txheej txheem siv tshuab
Kev tswj cov txheej txheem kev siv tshuab luam yeeb ntawm cov xim thaij duab yog qhov tseem ceeb ntawm kev ua kom tiav cov khoom siv kev lag luam thiab qhov zoo ntawm cov khoom. Hauv kev luam ntawv, los ntawm cov xim ntawm tus cwj pwm mus rau lub meej pem ntawm cov luam tawm ntawm cov khoom; los ntawm cov txheej txheem luam ntawv mus rau qhov kev tshaj tawm ntawm cov luam tawm, nws yuav tsum tswj kev ua tus luam ntawv. Piv txwv, thaum cov ntawv luam tawm, thaum tsim qhov teeb meem me me, muaj cov ntawv nyeem me me, thiab ib daim ntawv loj los sis kab ntawv loj loj, kom paub tseeb tias cov nyhuv ntawm daim teb, kab thiab cov ntawv nyeem, thiab qhov screen version, luam ntawv zoo thiab luam ntawv zoo tuaj. Daim txiag loj ntawm daim phaj yuav muab faib ua ob ntu hauv tib xim qhov teeb, uas muab faib ua ob ntu, uas yog raug thiab ntxuav cais, yog li ntawd qhov zoo ntawm daim ntawv luam ntawv thiab cov qauv ua haujlwm yuav zoo dua. Kev Txhim Kho. Cov phaj no tseem tuaj yeem coj kom zoo dua ntais ntawm ntau hom kev luam xim, thiab siv ob pawg xim los sau loj ntawm thaj chaw, kab thiab cov ntawv nyeem, thiab anilox daim hlau, yog li ntawd cov qauv ntawm cov qauv thiab cov kab version yuav nyob tuab thiab ci . Tus number case txheej yog luam tawm, thiab cov ntawv nyeem thiab textured ntws tau txais tus nqi tsim nyog ntawm number case coating, uas tuaj yeem ua rau kom tsis txhob tshwm sim ntawm cov tshuaj tsis xws luag. Tsis tas li ntawd, nyob rau hauv qhov kev lag luam luam, nws yuav tsum raug xyuas seb lub tshuab luam ntawv tsis ncaj los yog tsis muaj, seb puas muaj cua nkag mus rau hauv lub tshuab nqus tsev; lub sij hawm raug tsim nyog yuav tsum tau txiav txim siab raws li qhov teeb tsa kev teeb tsa thiab cov yam ntxwv ntawm lub phaj, thiab yog tias tsim nyog, yuav tsum kuaj cov ntawv luam tawm; Cov ntawv xov xwm ntawm cov ntaub ntawv yuav tsum xyuam xim rau kev tswj ntawm kev ntxuav thiab tsim kom muaj sij hawm los tiv thaiv qhov teeb meem xws li kab deformation thiab qhov poob ntawm qhov ua txhaum ntau phaj.
3. Kev tswj cov thawv ntim tshuab luam ntawv
3.1 xyuam xim rau kev tswj cov kub thiab qhov av nyob hauv cheeb tsam luam ntawv. Xim thaij xim feem ntau muaj ntau tshaj 4 xim, thiab sab kev taw qhia ntawm daim ntawv tuaj yeem ua rau deformed vim kev hloov hauv qhov kub thiab qhov av ntawm qhov chaw, ua rau tsis muaj tseeb tshaj. Tswj lub ntsuas kub thiab av noo ntawm Rhiav luam ntawv tau los ua ib qho tseem ceeb ntawm kev txhim kho cov khoom pov thawj ntawm cov khoom tha xim. Yog li, qhov kub thiab av noo ntawm qhov chaw yuav tsum muaj kev ruaj khov thiab sib npaug, txawm tias nws yog ib qho kev nyuab, qhov kev cob qhia ua lithographic lossis gravure. Yuav tsum tsis muaj kev sib txawv hauv cov txheej txheem luam ntawv, yog li ntawd kom tsis txhob muaj qhov tsis zoo ntawm qhov tsis muaj tseeb. Cov txheej txheem luam ntawv qhia tau hais tias qhov kub ntawm qhov kev ua haujlwm luam tawm feem ntau tswj tau li ntawm 22 ° C, thiab yuav tsum ceev nrooj ntawm li 60%. Daim ntawv thiab cov ntawv xov xwm tsis yog kev ua kom deformation, uas yog qhov zoo tshaj plaws rau kev ua kom tiav cov khoom ntawm qhov khoom.
3.2 kev thev naus laus zis. Kev siv ntawm ib qho kev tshaj tawm ua ntej yuav luam tawm daim thawv ntawv, qhov kev tswj ntawm lub phaj-tshuab yog qhov tseem ceeb heev. Txij li ntawm PS phaj yog nyias, tag nrho cov thickness ntawm cov photosensitive txheej thiab lub phaj hauv paus yog hais txog 0.3 hli, thiab lub phaj hauv paus ntawm lub txhuas phaj muaj ib tus xeeb ceem zoo. Kev tu yuav tsum tau noj thaum lub sij hawm phaj kev thau khoom, thiab lub phaj yuav tsum ceev faj kom tsis txhob tawm qhov teeb meem. Nws yog khawb los ntawm qhov chaw ntawm lub tshuab; thaum lub phaj raug rub, nws yog qhov tsim nyog yuav tsum tau them sai sai rau lub nrig quab yuam, kom tsis txhob muaj kev quab yuam los ntawm kev muaj zog thiab lub phaj kom ncav thiab deformed, ua rau tsis muaj tseeb cov khoom overprinting thiab luam ntawv ruaj. Cov phom flexographic phaj yuav tsum ua tib zoo saib rau qhov chaw ntawm daim ntawv phom sai li sai tau, tsis txhob rov ua dua lub phaj ntxiv rau lub phaj thiab ua rau lub plab. Thaum lub ntsuas kub tsis tshua muaj siab, zoo siab yuav tsum tau muab ob daim ntaub sib txig sib luag los tiv thaiv cov ntawv xov xwm tawm ntawm lub sijhawm luam ntawv. High-quality double-sided daim kab xev yuav tsum muaj zog nyob rau hauv viscosity, zoo nyob rau hauv flatness, uniform hauv tuab thiab zoo nyob rau hauv kub tsis kam. Nws tuaj yeem ua kom muaj kev ruaj ntseg ntawm viscosity hauv siab thiab tsis kub ua haujlwm thaj chaw. Lub phaj thiab phom lub khawm tsis tawm ntawm cov kua nplaum seem thaum muab dismantling.
3.3 npawm printing number case tshuav tswj. Tus tswj ntawm tus lej tshuav nyiaj li cas yog txoj kev txuas uas tseemceeb rau kev ua haujlwm luam ntawv. Thaum luam ntawm daim ntaub ntsej muag, qhov kev tswj ntawm tus lej feem ntau tsis yog nyob rau hauv qhov chaw, thiab qhov zoo ntawm tus number case yog qhov tseem ceeb. Yog li, hauv cov txheej txheem luam yeeb, qhov kev txhim kho ntawm qhov ciav hlau yuav tsum tsawg tshaj plaws li. Tus nqi txaus yog xav tau raws li kev tswj hwm tus lej ntawm tus lej thiab dej, thiab nws yog txwv tsis pub siv qhov "balance number" thiab "water for printing". Tus yuam sij rau number case duav tswj yog xav tau tus cwj pwm kom muaj kev tu vaj tu tsev zoo thiab muaj peev xwm ua tau zoo. Sim siv tsis muaj los yog tsawg dua drier los tiv thaiv cov tawv nqaij tsis tuaj yeem pom hauv cov ziab khaub ncaws thaum ntxov; lub Rhiav kev luam ntawv yuav tsum them nqi rau kev tiv thaiv plua av thiab hmoov. Sim kom tsis txhob sib tov qub qub thiab tshiab dua; tus nqi pH ntawm dampening kua yuav tsum tau tswj kom zoo, cov dej zoo yuav tsum khaws cia dawb huv; cov ris tsho uas rubber thiab dej yuav tsum tswj kom zoo thiab ua kom zoo; cov ntawv luam tawm yuav tsum tau muab coj los qis thiab tas mus li, cov no yog cov cwj pwm Kev npau suav tseem ceeb thiab cov txiaj ntsig kev lees paub.
3.4 Qhia tawm cov xim xim sib lawv liag. Kev luam ntawm cov xim tha xim yog feem ntau ua tiav ib zaug xim tshuab luam ntawv nyob rau tib lub sijhawm. Thaum luam ntawv, tus number case yog overprinted thiab overprinted nyob rau hauv ib lub caij ntawm "ntub thiab ntub". Lub sij hawm ntawm lamination ntawm cov xim yog luv luv, yog li ntawd cov xim xim sib lawv liag Nws yuav tsum raug tsim nyog raws li ntau yam xws li kev teeb tsa layout, number case yam ntxwv thiab ntawv cov khoom. Feem ntau hais lus, cov txheej txheem ntawm cov xim luam tawm yuav tsum tau ua raws li qhov tseeb qhov teeb meem, xws li cheeb tsam luam ntawv thiab tus nqi tsawg tsawg ntawm cov cwj mem, luam tawm ntawm qhov teeb tsa thiab ntau tus number case; tus cwj mem xaws plaub hau nrog cov pluag pob tshab yog sau ua ntej, thiab tus number case nrog cov ntawv pom zoo zoo. Xauv number case uas siab tuaj yeem luam tawm ua ntej, thiab tus cwj mem xaj nrog cov viscosity me me muab luam tawm tom qab; tus cwj mem qis uas muaj qis qis yuav luam tawm ua ntej, thiab tus number case nrog ceev ziab qhuav ceev. Xav txog qhov teeb meem ntawm lub cev ceev ceev, lub teeb pom kev ntawm daj thiab magenta yog cov neeg pluag, thiab nws yuav tsum raug txiav txim siab kom npaj thawj daim luam, thiab lub teeb tsis kam ntawm ntsuab thiab dub yuav tsum luam tawm. Thaum muaj qhov sib txawv hauv lub zog, qhov ci ntsa iab, kua quav ntim khoom, dej ntub dej, thiab pH ntawm cov khoom, nws yuav tsum tiv thaiv kom tsis txhob muaj hmoov av, rub tawm, khaus, tsis tuaj zom, thiab ua kom qhuav tsis zoo, uas ua rau muaj teeb meem rau kev luam ntawv. Daim ntawv txiav txim yuav tsum muab xam los ntawm cov ntawv sau. Rau cov ntawv uas muaj qhov ci zoo thiab ceev nrooj, xim xim tsaus yuav tsum muab luam tawm ua ntej, raws li lub teeb xim. Ntawm qhov tod tes, yog tias qhov zoo nkauj ntawm daim ntawv yog ntxhib thiab xoob, nws yuav tsum muab luam tawm nrog ib lub teeb xim thiab tom qab ntawd nrog rau xim tsaus.
3.5 khoom overprinting tseeb tswj. Thaum cov menyuam yaus tom cov hniav, muaj teeb meem txawv teb chaws lossis hniav hnav; qhov kev quab yuam qeeb tsis txaus los yog cov nqi ntawm cov hniav tsis haum; qhov chaw ntaus ntawv yog hnav thiab xoob xoob, yog li ntawd qhov haujlwm tsis zoo; daim ntawv qhia cav log tsis yog tsis haum lossis siv txoj hlua kev tuav pov hwm; lub thickness ntawm hauv ob sab phlu yog tsis haum los yog lub looseness tshwm sim. Yog hais tias lub tshuab luam ntawv siab dhau heev los sis cov khoom xa tuaj tsis raug; cov duab ntawv tsis yog lub tiaj li los sis lub suab deev tshwm sim ntawm ntug ntawm daim ntawv; qhov nyiaj ntawm cov ciav dej los yog tus cwj mem yog loj dhau, uas yuav cuam tshuam qhov khoom zoo tshaj ntawm qhov khoom. Yog li, thiaj li yuav txhim kho qhov tseeb ntawm qhov khoom, Tshem nyiaj rau kev kuaj loj thiab kev tswj xyuas los ntawm cov kev sib tham saum toj no, thiab paub tias qhov teeb meem yuav tsum tau muab rau lub sijhawm los daws qhov teeb meem.
3.6 tsim nyog tswj kev luam ntawv siab. Nws yog ib qho tseem ceeb ntawm kev tswj cov kev luam ntawv kom ua tau zoo ntawm cov ntawv pov thawj ntawm cov ntawv luam tawm, tiv thaiv kev luam cov teeb meem xws li muab tshuaj txhuam, tsis huv thiab tsis muaj daim phiaj, thiab xyuas kom meej meej ntawm kev luam. Cov lithographic thiab flexographic luam ntawv yuav tsum luam tawm kom nrawm dua li qhov ua tau ntau dua, thiab qhov chaw nyob ntawm qhov yuav tsum zoo. Lub zos kev nyuab siab yuav tsum yog ib qho padded, thiab nws yuav tsum tsis txhob kho los ntawm txoj kev ntawm qhov muag tsis pom kev. Thaum kho lub siab, nws yuav tsum tau nqa tawm hauv lub teeb thiab hnyav ntawm tus txheej txheem ntawm tus npoo npo, kom tsis txhob muaj tus ntiv tes tsis txaus thiab cov kab txaij tsis meej thiab lub siab nce.
3.7 cim xaiv thiab kev tswj ntawm txoj kev siv tshuab. Rau xim thawv ntawv luam ntawv, nws yog ib qhov tsim nyog yuav tau siv tus number case nrog kev fineness thiab nruab dryness. Cov cwj mem ntau hom yuav tsum tsis txhob muab sib xyaw thiab siv los tiv thaiv kev puas tsuaj ntawm PS phaj txheej thiab tsis txhob qias neeg, muab tshuaj txhuam thiab tawm phaj. Xws li kev tsim cov luam tawm tsis zoo. Rau qhov loj ntawm thaj chaw muaj xim xim luam ntawv, nws yuav tsum siv cov "sib xyaw tob twv nyias luam ntawv" rau kev luam ntawv, uas yog, kom kho cov xim ntawm cov cwj mem rau me ntsis, kom cov ink txheej txheej thinned thaum luam ntawv, uas muaj peev xwm ua tau raws li cov kev cai ntawm kev sau ntawv hawj thiab ua haujlwm zoo. Tiv thaiv kev tshwm sim ntawm cov luam tsis pom zoo xws li qias, muab tshuaj txhuam, thiab blotting.
3.8 zoo luam ntawv "peb Qin" tawm. Tom qab kev ua tiav ntawm kev ua haujlwm, txawm hais tias lub tshuab luam ntawv thiab tus nqi ntawm cov ntawv thov tau hloov kho txhua zaus, vim muaj ntau yam kev hloov hauv cov txheej txheem luam ntawv, xws li cov kev hloov hauv qhov kub thiab txias, ink thixotropic, thiab zoo ntawm lub hauv paus ntawv. Tsis ruaj tsis zoo, cov khoom siv tsis tiav, thiab lwm yam, yuav ua rau muaj kev ruaj ntseg ntawm kev luam ntawv zoo. Yog li no, tus neeg ua haujlwm luam ntawv nrog cov khoom tsim muaj thiab kev paub txog lub luag haujlwm muaj peev xwm yuav ua kev kuaj xyuas thaum lub caij luam ntawv. Muab tus cwj mem kua number case rau hauv tus ciav caws qis thiab soj ntsuam cov dej ntawm lub phaj. Qhov no yog ib qho tseem ceeb ntawm kev txhim kho cov kev luam ntawv zoo thiab kev ua haujlwm kom zoo, thiab nws kuj yog ib qho kev lav paub tseeb kom tsis txhob luam tawm tsis zoo. Los ntawm kev ua cov ntawv zoo "peb txoj haujlwm", peb tuaj yeem ua kom zoo dua qub thiab ntxuav cov nyiaj seem ntawm kev luam ntawv, thiab nrhiav tau cov kev phom sij ntawm kev luam ntawv zoo rau lub sijhawm, yog li yuav tsum tau tiv thaiv thiab kho cov kev ntsuas hauv lub sijhawm, txo cov khoom lag luam, thiab txhim kho tus nqi dhau ntawm kev luam tawm.
3.9 luam txheej txheem kev siv tshuab kom tshem tau ntawv hmoov. Vim yog qhov kev sib tw ua lag luam nce ntxiv, kev khwv nyiaj txiag ntawm kev lag luam hauv kev lag luam tau dhau los ua neeg tseem ceeb. Nws yog lub hom phiaj teeb meem uas nws tsis yooj yim rau siv cov ntaub ntawv zoo-zoo rau lub ntim ntawm cov khoom lag luam. Qee cov ntawv nrab nruab nrab thiab qib qis qis mas feem ntau yooj yim rau kev tshwm sim hauv kev luam ntawv vim yog qhov tsis zoo ntawm lub zog. Kev ua zoo xws li cov hmoov thiab lint kuj yooj yim los ua cov luam ntawv tsis muaj teeb meem xws li muab tshuaj txhuam, qias neeg thiab tawm-phaj, uas cuam tshuam txog cov khoom ua tau zoo thiab cov khoom luam zoo. Yuav kom txo los sis zam qhov teeb meem no, feem ntau cov xim xim txheej ntawm cov xim tshuab luam ntawv ntau siv tau los siv los txhawm rau thiab ua kom zoo dua qub ntawm daim ntawv xub thawj los ntawm kev ua ntej tso dej thiab huab cua ntawm lub hauv paus ntawv thawj ob hom xim ntawm lub tshuab. Cov teeb meem tsis zoo, txo kom zoo los yog tshem tawm qhov teeb meem ntawm kev luam zoo, xws li hmoov, lint, thiab kua.
4. Kho cov txij nkawm thiab kev hloov ntawm lub tshuab
Tshuab yog ib qho tseem ceeb hauv kev txiav txim siab txog theem tsim khoom thiab khoom zoo, thiab kuj yog qhov zoo ntawm kev luam ntawv. Yog li ntawd, peb yuav tsum tau saib xyuas kev txhim kho txoj kev siv lub tshuab, qhov tseem ceeb ntawm lub tshuab, xws li khub ntawm cov ntawv hniav, rub cov ntsuas tawm, lub hauv ntej gauges, cov hniav. Qhov feem ntawm cov kab, cov menyuam phom, thiab lwm yam yuav tsum tau muab khaws cia kom zoo raws li cov cuab yeej ntawm cov cuab yeej kom tiv thaiv tau qhov hnav thiab tsim kua muag ntawm cov khoom puas thiab looseness, uas ua rau qhov tshwm sim tsis muaj tseeb. Ua tib zoo saib xyuas lub tshuab kom nquag saib xyuas, nrhiav cov teeb meem thiab kev phom sij thiab ua raws sij hawm los daws lawv. Yog ua tib zoo tswj cov cuab yeej, qhov tseeb ntawm lub tshuab yog khaws cia zoo. Tsis tas li ntawd, qhov tseeb ntawm kev hloov ntawm lub tshuab tseem yog ib qho kev txuas ntawm kev siv tshuab uas tsim kho cov kev luam cov khoom zoo. Cov txheej txheem ntau yam qhia tau hais tias lub thickness ntawm lub raj tshuaj yuav tsum nruj nruj raws li cov ciaj ciam ntawm cov khoom ua kom meej, thiab daim kab xev, daim pam thiab lub phaj luam ntawv nruj nreem. Lub siab ntawm tus neeg ua rau tom cov hniav yuav tsis pub tsawg; tus nqi ntawm lub qhov ncauj yuav tsum tau muab khaws cia nruab nrab thiab tsis dhau me me. Kev siv cov hlua khaum thiab cov kaus hniav, nws yuav tsum hloov cov khoom tshiab hauv lub sijhawm; luam ceev ntawm tag nrho pawg khoom ntawm cov khoom yuav tsum zoo ib yam, thiab kev luam ntawv yuav tsum tsis txhob qeeb dhau heev los yog ceev ceev. Nyob rau hauv no txoj kev, lub overprinting qhov tseeb ntawm cov khoom yuav zoo dua ensured.
Hauv kev xaus, optimizing cov txheej txheem technology ntawm cov xim tha xim muaj txhua yam ntawm tag nrho cov txheej txheem ntawm kev tsim. Yog li ntawd, ntev li peb ntxiv zog rau kev tswj cov tshuab kev tsim tawm, scientifically thiab muaj kev ua zoo qauv npaj cov qauv kev hloov khoom siv thiab cov qauv txheej txheem, uas yog npaj rau kev npaj ua ntej. Tsim tawm los tswj cov txheej txheem; los ntawm raw khoom siv rau cov khoom lag luam; los ntawm cov txheej txheem rau kev luam tshuab luam ntawv; los ntawm cov khoom ua tiav ib nrab ntawm cov khoom ua tiav, cov kev tswj hwm ntawm kev ua theem-los-kauj systematic, tsis tsuas yog muaj peev xwm ua kom tsis txhob muaj ntau yam luam ills tshwm sim, thiab qhov tsim tau thiab cov khoom zoo tuaj yeem kho tau ib txhij.