Yuav tsum nyeem: Cov Khoom Siv Tiv Thaiv Lub Hnab ntim cov ntawv luam tawm xim sib txawv tswj cov lus zais

Yuav tsum nyeem: Cov Khoom Siv Tiv Thaiv Lub Hnab ntim cov ntawv luam tawm xim sib txawv tswj cov lus zais

Qhov teeb meem xim txawv ntawm kev ntim khoom thiab luam ntawv tau teeb meem rau cov neeg ua haujlwm luam ntawv. Txawm hais tias qhov sib txawv xim tuaj yeem tswj tau zoo yog lub ntsuas ntsuas uas qhia txog qhov zoo ntawm lub tuam txhab cov khoom, lub koob npe nrov thiab qib kev txawj ntawm tus neeg teb xov tooj. Yog li ntawd, nws yog qhov teeb meem uas txhua tus neeg ua haujlwm luam ntawv thiab nws lub tuam txhab yuav tsum tau saib xyuas.

Luam tawm xim sib txawv yog kwv yees muab faib ua ob qhov tshwm sim, ib qho yog hais txog: xim ntawm tib batch ntawm cov khoom, tab sis nrog cov xim ntawm cov qauv. Qhov thib ob yog qhov sib txawv ntawm cov xim sib txawv hauv tib pawg ntawm cov xim, qee qhov zoo ib yam nrog cov qauv, tab sis qee qhov tsis sib haum nrog cov qauv.

Tam sim no los ntawm cov hauv qab no nrog koj los tham thiab txheeb xyuas.

1. Thawj qhov tshwm sim (cov xim ntawm cov khoom sib txawv yog tib yam, tab sis muaj xim sib txawv nrog cov xim ntawm cov qauv)

1. Tib neeg yam:

Nws tsis muaj dab tsi ua nrog rau qib kev txawj ntawm tus thawj coj, tab sis nws yuav tsum ua nrog lub luag haujlwm ntawm tus thawj coj. Txij li cov xim ntawm tib batch ntawm cov khoom tuaj yeem ua tau zoo ib yam, nws qhia tau hais tias qib kev txawj ntawm tus thawj coj tsis yog qis, tab sis vim li cas koj thiaj li tsis kam luam tawm thaum nws tsis ua raws li cov qauv? Koj puas tau kos npe rau thawj tus qauv? Qhov no yog txhua yam hais txog tus thawj coj lub luag haujlwm. (Tseem tsis suav nrog cov qauv kos npe yuam kev, yog tias muaj, nws muaj feem cuam tshuam rau lub luag haujlwm ntawm tus neeg kos npe).

2. Ntawv xim:

Daim ntawv nrog cov xim sib txawv muaj qhov sib txawv ntawm cov xim ntawm cov xim luam ntawv txheej. Vim tias qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov xim dub, xim liab, xiav lossis daj, yog li hauv kev luam ntawv txawm tias tus number case, xim tsis muaj qhov hloov pauv, tab sis tus number case tiag tiag muaj qhov pom tseeb, cov nyhuv ntawm cov xim nrog cov xim dawb. daim ntawv sib txawv thiab tshwm sim, ua rau muaj xim sib txawv. Hauv qhov qhib, koj yuav tsum siv tib daim ntawv. Vim hais tias cov gram hnyav, specification, loj txawm tias tib yam, tab sis cov khoom ntawm batch naj npawb hnub sib txawv, lub whiteness ntawm daim ntawv yuav muaj ib tug tej yam txawv, uas ua rau cov xim ntawm printing. Yog li ntawd, tib daim ntawv whiteness yuav tsum tau siv raws li cov ntawv luam ntawm tib yam khoom.

3. Gloss thiab smoothness ntawm daim ntawv:

Lub gloss ntawm cov ntawv luam tawm nyob ntawm qhov gloss thiab smoothness ntawm daim ntawv. Offset xim luam ntawv yog thaum lub teeb teeb meem nyob rau saum npoo ntawm daim ntawv, lub teeb pom kev rau lub retina ntawm tib neeg lub qhov muag, los ntawm cov xim hlwb kom txais cov photosynthesis thiab pom cov xim. Yog hais tias lub gloss thiab smoothness ntawm daim ntawv yog siab, cov xim peb saib yog ib txwm xav txog los ntawm tus number case txheej, lub ntsiab xim lub teeb saturation yog siab. Yog hais tias daim ntawv saum npoo yog ntxhib thiab gloss yog tsawg, nws yuav tsim diffuse reflection, uas yuav txo tau qhov saturation ntawm lub ntsiab xim lub teeb, yog li ntawd peb ob lub qhov muag tuaj yeem saib cov xim ntawm cov ntawv luam tawm. Tib tus number case yog ntsuas nrog lub densitometer. Daim ntawv nrog siab smoothness gloss muaj tus nqi siab ceev. Daim ntawv uas tsis tshua muaj smoothness thiab gloss muaj tus nqi tsawg.

4, printing nto kho:

Cov ntaub ntawv luam tawm yuav muaj qhov sib txawv ntawm cov xim hloov tom qab kev kho saum npoo xws li txheej, glazing, nias, roj dhau thiab luam ntawv teeb. Qee qhov kev hloov pauv no yog lub cev thiab qee qhov yog tshuaj lom neeg. Qhov kev hloov ntawm lub cev yog feem ntau yog tshwm sim nyob rau hauv qhov nce specular reflection ntawm cov khoom nto, uas muaj qee yam cuam tshuam rau cov xim ceev. Piv txwv li, complexing zaj duab xis, UV kua roj vanish, siab, thiab lwm yam, cov xim ceev yuav nce. Cov xim ceev ntawm cov khoom luam tawm yog txo tom qab complex subfilm thiab matte roj. Kev hloov tshuaj lom neeg feem ntau yog los ntawm cov nplaum nplaum, glazing roj, UV roj thiab lwm yam. Cov ntaub ntawv no muaj ntau yam kuab tshuaj, uas yuav ua rau cov xim ntawm cov luam ntawv number case txheej mus rau cov tshuaj tiv thaiv thiab ua rau cov xim hloov. Yog li ntawd, raws li ib pob offset printing, yog hais tias muaj ib tug post-nias cov txheej txheem nyob rau hauv printing, lub cev thiab tshuaj hloov ntawm post-nias yuav tsum tau coj mus rau hauv tus account, thiaj li yuav txiav txim siab tus nqi ntom thiab Lab tus nqi ntawm cov number case txheej. thaum luam ntawv.

5, qhuav regression ceev tus nqi:

Tom qab cov khoom luam tawm offset tsuas yog luam tawm xwb, tus number case tseem nyob rau hauv lub xeev ntub, thiab tus nqi ntom ntom ntsuas ntawm lub sijhawm no txawv ntawm qhov ntsuas tom qab luam ntawv qhuav. Ntub dej ntom ntom yog qhov siab, cov nqi qis dua yog qhov tsawg, qhov no yog qhov tshwm sim ntawm kev sib cav sib luag. Qhov no yog vim tias txheej number case tsuas yog luam tawm muaj qee yam khoom muaj qib. Kev ua tau zoo rau saum npoo ntawm daim iav reflection, zoo li ci xim, zoo luster. Thaum tus number case txheej dries, qhov saum npoo yog diffused, thiab lub ntuj luster yog dimmer dua li thaum nws tau luam tawm thawj zaug. Txhawm rau txo cov xim sib txawv ntau npaum li qhov ua tau, peb siv tib txoj kev ntsuas ntub dej los tswj cov luam ntawv. Ntawd yog, thawj qhov luam tawm yog nyob rau hauv lub xeev ntub dej tom qab tus neeg siv khoom pom zoo kos npe tam sim ntsuas tus nqi ntub dej thiab L * a * b * tus nqi. Tom qab luam tawm cov khoom (lub xeev ntub dej), raws li thawj qhov ntsuas qhov ceev thiab L * a * b * tus nqi rau kev tswj xim. Tau kawg, yog tias koj siv lub ntsuas qhov ntom ntom nrog cov khoom siv iav polarizing, nws tuaj yeem tshem tawm tus cwj mem nto vim qhov xav tau ntawm lub teeb. Cov ntub dej nrawm ntsuas los ntawm nws yog qhov ze ze rau qhov ceev ceev, uas tuaj yeem pab txo cov xim sib txawv.

6. Printing siab:

Kev luam ntawv siab yog ib qho ntawm cov xwm txheej ntawm tus lej hloov pauv, vim tias cov ntawv luam ntawv phaj nto, daim pam thiab lwm yam tsis tuaj yeem tiaj tus, qhov saum npoo ntawm daim ntawv yog inevitably muaj me ntsis pob lossis tsis sib xws. Yog tias lub tshuab luam ntawv tsis txaus lossis tsis sib npaug, cov txheej txheem number case yog qhov tshwm sim ntawm qhov tsis sib xws, yog li hauv cov txheej txheem yuav tsum ua kom tiav "peb lub tiaj tus", uas yog, lub phaj luam ntawv nto, daim pam thiab substrate thiab hauv ob sab phlu yuav tsum tau. ua tiav cov xwm txheej zoo sib xws, txhawm rau ua kom tiav cov txheej txheem nyias nyias los ntawm kev sib npaug ntawm cov tshuab luam ntawv siab ntawm cov ntawv luam kom tau txais ntau xim xim xim.

Thaum lub tshuab luam ntawv siab tsis txaus lossis tsis sib xws, muaj kev sib cuag tsis zoo ntawm lub hauv ob sab hauv lub cev thiab nplooj ntawv luam ntawv, nws yog ib qho tsim nyog yuav tsum tau nce tus number case kom tau raws li cov duab kos duab. Tab sis qhov no yuav tsis tsuas yog nce tus cwj mem noj xwb, tab sis kuj yooj yim los tsim cov xim sib txawv thiab luam ntawv qias neeg, yog li ua txoj haujlwm zoo ntawm "peb lub tiaj tus" (tus cwj mem rau lub tiaj, dej rau cov menyuam tiaj tus, cov menyuam tiaj tus) siv cov khoom sib xws thiab tas li. luam ntawv siab, txhawm rau tiv thaiv cov xim sib txawv los ntawm qhov tsis raug siab.

7. Saib qhov teeb pom kev ntawm lub rooj qauv:

Offset luam ntawv yuav tsum muaj lub teeb ci thaum saib cov xim, tsis muaj lub teeb pom kev tsis pom xim, tab sis yog tias cov yam ntxwv ntawm lub teeb ci tsis zoo ib yam, ces qhov sib txawv ntawm cov xim yuav zoo heev. Feem ntau, peb xav saib cov xim nyob rau hauv lub teeb ntuj (uas yog, qauv teeb qhov chaw). Yog tias siv lub teeb pom kev zoo tib yam li lub teeb ci, ces cov xim yuav tshwm daj, nws yog qhov nyuaj rau kev txheeb xyuas cov xim, qhov kawg luam tawm yuav ua rau muaj xim tsis zoo. Tsis tas li ntawd, qhov kev siv ntawm lub teeb thiab lub kaum sab xis ntawm irradiation tseem yuav cuam tshuam rau cov xim sib txawv. Nyob rau hauv tib lub teeb ci, qhov kev siv ntawm lub teeb pom kev ntawm cov ntawv pov thawj illuminated yog txiav txim siab los ntawm qhov kev ncua deb ntawm cov pov thawj thiab lub teeb ci. Nyob ze muaj zog, deb tsis muaj zog. Yog li peb feem ntau ua haujlwm nruab hnub lossis hmo ntuj yuav tsum xyuam xim rau ob lub ntsiab lus: ib qho yog siv cov qauv teeb pom kev zoo (wavelength 400-700) los yog li ntawd), lwm qhov yog ua tib zoo saib xyuas qhov siv ntawm lub teeb ci thiab irradiation Lub kaum sab xis yog sib npaug. Rau cov khoom uas xav tau xim siab, tus number case qauv ntawm kev luam ntawv yuav tsum muab piv rau tus qauv qauv, kom qhov sib txawv ntawm kev soj ntsuam lub kaum sab xis me me, qhov kev txheeb xyuas cov xim yog qhov tseeb. Yog li ntawd, cov txheej txheem xyaum qhia peb tias cov yam ntxwv ntawm lub teeb qhov chaw thiab qhov sib txawv ntawm kev saib lub kaum sab xis yuav cuam tshuam ncaj qha rau qhov tseeb xim kev ntxub ntxaug (yinshua96.cn).

Ob, qhov thib ob tshwm sim (muaj xim txawv nyob rau hauv tib batch ntawm cov xim, ib txhia yog raws li cov qauv, tab sis ib txhia yog inconsistent nrog cov qauv)

1. Tib neeg yam:

Nws ntseeg tau hais tias thawj ob peb daim ntawm cov xim sib txuam, nyob rau hauv cov ntaub ntawv ntawm tus number case thiab ntxuav tseem tsis tau sib npaug, pib qhib txhua txoj kev, cov txheej txheem luam ntawv yuav kho tus nqi ntawm cov dej thiab number case, thaum kho thiab qhib, yog khi ua rau cov xim sib txawv ntawm tib batch ntawm cov khoom luam ntawv, uas muaj kev sib raug zoo nrog tus thawj coj ntawm kev txawj ntse, kev paub, tus cwj pwm, thiab belongs rau qhov tsis muaj peev xwm los ntawm cov xim sib txawv ntawm tib batch ntawm cov khoom.

2. Embellishing kua:

Offset printing yog kev siv roj thiab dej sib koom ua ke ntawm kev luam ntawv. Cov dej no hais txog tus tuav. Nws qhov loj me ncaj qha cuam tshuam rau cov xim ntawm cov xim txheej. Dej loj number case xim lub teeb, dej me number case txheej yuav tsaus. Qhov dej ntau dua, qhov hnyav dua qhov emulsion ntawm tus number case. Emulsified number case luster, xim yog lub teeb. Emulsified number case luam ntawv tsis yog tsuas yog xim sib txawv loj, tab sis kuj ua rau cov nplaum nplaum, qhuav, imprinting tsis muaj zog thiab lwm yam teeb meem zoo. Yog li ntawd, hauv kev luam ntawv, kev ua haujlwm yuav tsum nruj me ntsis tswj qhov loj ntawm cov kua ntub dej ntawm cov ntawv luam ntawv phaj, thiab ua haujlwm zoo ntawm tus number case thiab ntxuav qhov sib npaug. Qhov dej me me, qhov zoo dua.

3. Printing ceev:

Qhov ceev ntawm kev luam ntawv ceev yuav cuam tshuam rau cov xim ntawm cov luam ntawv. Qhov no yog vim qhov ceev ntawm lub tsheb yuav cuam tshuam qhov sib npaug ntawm tus number case. Cov dej noo ntawm cov phaj nthuav qhia txawv ntawm cov phaj hauv zos. Qhia phaj ya raws volatilization yog me me, lub zos phaj ya raws volatilization loj. Vim qhov kev hloov pauv ntawm qhov loj ntawm cov dej uas ua rau tus cwj mem tsis sib npaug, nws yuav ua rau muaj kev hloov pauv xim ntawm tus cwj mem. Yog li ntawd, peb yuav tsum xyuam xim rau qhov ceev ceev thaum luam ntawv. Peb yuav tsum tsis txhob tsav ceev ib ntus. Tsav maj mam rau ib pliag, yog li luam tawm ntawm cov ntawv luam tawm yuav tsim cov xim sib txawv. Nyob rau tib lub sijhawm, nws yuav tsum tau hloov kho kom ruaj khov tshaj plaws raws li qhov xwm txheej ntawm lub tshuab. Piv txwv li, ib co txawv teb offset printing presses qhia qhov siab tshaj plaws ceev ntawm 16000 pieces / teev, thiab lub siab tshaj plaws ceev ntawm domestic tshuab yog 8000 pieces / teev. Cov speeds no tsis ruaj khov ceev. Feem ntau hais lus, txawm tias lub tshuab tuaj txawv teb chaws lossis lub tshuab hauv tsev, qhov ruaj khov ceev yog 70 feem pua ​​​​ntawm qhov siab tshaj plaws yog qhov zoo tshaj plaws, uas yog, lub tshuab ntshuam hauv li 11000 daim / teev, lub tshuab hauv tsev hauv li 5600 daim / teev, xws li ceev tuaj yeem yooj yim los tswj tus lej sib npaug, txo cov xim sib txawv.

4. Tsis zoo number case roller:

Offset luam ntawv txheej txheem, luam ntawv tuaj yeem tau txais cov xim xim xim, cots zoo muaj lub luag haujlwm tseem ceeb heev. Muaj peb hom cots: hloov cov menyuam, homogenizing roller thiab inking roller, uas muaj kev cuam tshuam zoo rau cov xim number case. Lub elasticity, viscosity, nruab nrab degree, hardness thiab nto tiav ntawm tus number case rau ib tug loj npaum li cas txiav txim qhov zoo ntawm tus number case. Yog hais tias lub inking roller elasticity tsis zoo, lub viscosity tsis txaus, cov menyuam lub cev yog eccentric. Thaum lub colloid yog ib qho nyuaj thiab kev laus, nws yog ib qho yooj yim uas yuav ua rau tsis sib xws los yog tsis ruaj khov number case nyob rau hauv cov txheej txheem luam ntawv, thiaj li hais tias tus number case xim ntawm daim ntawv npaj printing yog inconsistent. Yog li ntawd, qhov zoo ntawm cov cots yuav tsum tau xyuas kom meej thaum luam ntawv, thiaj li yuav xyuas kom meej tias tus number case coated ntawm lub printing phaj yog yeej zoo tib yam nyob rau hauv txhua lub voj voog luam ntawv. Yog li ntawd, kev ua haujlwm li niaj zaus yuav tsum tau ntxuav ntawm lub txaj, kom cov ntaub ntawv plua plav thiab impurities nyob rau hauv lub txaj tuaj yeem raug tshem tawm, kom ntseeg tau tias kev hloov pauv ntawm tus number case. Nyob rau tib lub sijhawm, kev sib cuag lub siab ntawm cov chais thiab nruab nrab ntawm cov chais thiab cov ntawv luam ntawv yuav tsum tau hloov kho, txwv tsis pub nws yuav ua rau tsis sib xws ntawm tus lej hloov thiab xim sib txawv loj. (yinshua96. Cn)

5. Kev tu cov khoom siv:

Txhawm rau kom muaj kev ua tau zoo ntawm lub tshuab yog qhov kev lees paub txhim khu kev qha los txhim kho cov ntawv luam ntawv zoo. Yog tias lub tshuab tsis ruaj khov, xws li qhov tsis sib xws thiab cov ntawv tsis ruaj khov, yuav muaj cov nplooj ntawv khoob thiab ntau daim ntawv luam tawm. Nws yog khi ua kom muaj xim sib txawv hauv kev luam ntawv. Yog li feem ntau peb yuav tsum ua txoj haujlwm zoo ntawm kev saib xyuas cov cuab yeej, ua tib zoo saib xyuas lub lubrication ntawm cov khoom tseem ceeb ntawm lub tshuab, tiv thaiv qhov hnyav ntawm hnav, kom cov khoom siv nyob rau hauv lub xeev ruaj khov. Raws li lub tshuab luam ntawv offset ua haujlwm zoo ntawm "peb zoo" (tswj, siv, kho), "plaub" (yuav siv, yuav tswj, yuav xyuas, yuav teeb meem).

Muaj ntau qhov laj thawj rau kev tsim cov xim luam ntawv sib txawv, thiab cov txheej txheem tswj tsis tsuas yog cov no, uas xav kom peb txuas ntxiv mus tshawb nrhiav thiab khaws cia hauv kev lag luam luam ntawv, txhim kho tus cwj pwm zoo ntawm kev sau ntawv, uas yog qhov tsim nyog rau kev txhim kho. lawv tus kheej muaj peev xwm. Nyob rau hauv lub sij hawm spare, nyeem ntau phau ntawv hais txog kev luam ntawv theory, thiab muaj theories los qhia, kom tsis txhob muaj ntau txoj kev. Cov neeg siv khoom muaj kev xav tau siab dua thiab siab dua rau qhov zoo ntawm cov khoom luam ntawv. Rau peb, nws yog lub siab thiab kev txhawb siab. Kuv ntseeg tias ntev npaum li koj tuaj yeem ntsib nws nrog tus cwj pwm zoo, koj yuav muaj kev vam meej ntau dua ntawm txoj kev.