Yuav tsum Nyeem: Lub zais rau xim Aberration Control hauv Cigarette Box Printing

Yuav tsum Nyeem: Lub zais rau xim Aberration Control hauv Cigarette Box Printing

Qhov teeb meem chromatic aberration ntawm Cigarette Box prints yeej ib txwm plagued cov neeg ua haujlwm luam ntawv. Txawm hais tias chromatic aberration tuaj yeem tswj tau zoo yog lub ntsuas pas ntsuas uas qhia txog lub tuam txhab cov khoom zoo, lub koob npe nrov thiab qib kev txawj ntawm tus neeg teb xov tooj. Yog li ntawd, nws yog ib qho tseem ceeb rau txhua tus neeg ua haujlwm luam ntawv. thiab tuam txhab uas muag yuav tsum tau them sai sai rau.

Lub chromatic aberration ntawm Cigarette Box tuaj yeem muab faib ua ob qhov tshwm sim. Ib qho yog tias cov xim ntawm cov khoom sib txawv yog tib yam, tab sis muaj qhov sib txawv chromatic los ntawm cov xim ntawm cov qauv. Qhov thib ob yog hais txog: muaj xim sib txawv nyob rau hauv tib batch ntawm cov xim, qee qhov zoo ib yam nrog cov qauv, tab sis qee qhov tsis sib xws nrog cov qauv.

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

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 rau tus thawj coj ntawm qib kev txawj ntse, tab sis nws muaj qee yam ua rau tus thawj coj lub luag haujlwm. Txij li cov xim ntawm tib batch ntawm cov khoom tuaj yeem khaws cia zoo ib yam, nws txhais tau hais tias tus thawj coj ntawm qib kev txawj tsis qis, tab sis vim li cas koj thiaj li twv yuav luam tawm yog tias nws tsis sib haum nrog cov qauv? Koj puas tau kos npe thawj zaug? Qhov no yog ib qho teeb meem nkaus ntawm tus thawj coj lub luag haujlwm. (Nws tsis txiav txim siab qhov yuam kev ntawm kev kos npe rau tus qauv, yog tias muaj, nws muaj feem xyuam rau lub luag haujlwm ntawm tus neeg kos npe rau tus qauv).

2. Ntawv xim:

Cov ntawv uas muaj xim sib txawv muaj qhov sib txawv ntawm cov xim ntawm cov ntawv luam tawm txheej. Vim tias qhov sib txawv ntawm qhov dawb yog sib npaug rau qhov sib txawv dub, liab, xiav lossis daj rau tus number case, txawm hais tias tus number case thiab xim tsis tau hloov pauv thaum luam ntawv, tus number case tiag tiag muaj qee qhov kev pom tseeb, thiab cov nyhuv ntawm cov xim txawv. nrog cov xim dawb ntawm daim ntawv. Sib txawv thiab tso tawm kom pom, ua rau muaj xim sib txawv. Thaum qhib cov khoom siv, tib daim ntawv yuav tsum tau siv. Vim tias qhov hnyav ntawm gram, qhov tshwj xeeb thiab qhov loj me yog tib yam, tab sis cov khoom lag luam batch naj npawb hnub sib txawv, qhov dawb ntawm daim ntawv yuav muaj qhov sib txawv, uas yuav ua rau cov xim sib txawv ntawm cov khoom luam tawm. Yog li ntawd, daim ntawv ntawm tib yam dawb yuav tsum tau siv raws li cov ntawv luam ntawv rau tib yam khoom.

3. Lub gloss thiab smoothness ntawm daim ntawv:

Lub gloss ntawm Cigarette Box prints nyob ntawm qhov gloss thiab smoothness ntawm daim ntawv. Offset xim luam ntawv yog thaum lub teeb tshwm sim rau ntawm daim ntawv, lub teeb yog reflected mus rau retina ntawm tib neeg lub qhov muag, thiab cov xim yog pom los ntawm photosynthesis tau txais los ntawm cov xim-sensitive hlwb. Yog hais tias lub gloss thiab smoothness ntawm daim ntawv yog siab, cov xim peb saib yog cov xim uas tshwm sim los ntawm cov number case txheej, thiab lub ntsiab xim lub teeb saturation yog siab. Yog hais tias lub nto ntawm daim ntawv yog ntxhib thiab gloss yog tsawg, diffuse reflection yuav tshwm sim, uas yuav txo tau cov saturation ntawm lub ntsiab xim lub teeb, ua rau cov xim xaav ntawm cov ntaub ntawv luam tawm tsawg dua los ntawm tib neeg lub qhov muag. Tib tus number case tau siv los ntsuas qhov ntom nrog lub densitometer. Daim ntawv nrog siab smoothness thiab gloss nrog high density tus nqi. Daim ntawv uas tsis tshua muaj smoothness gloss thiab tsis tshua muaj nqi.

4. Kev kho deg ntawm cov ntawv luam tawm:

Tom qab lub Cigarette Box prints yog nto-kho los ntawm lamination, glazing, calendering, oiling, thiab luam ntawv, yuav muaj ntau yam xim hloov. Qee qhov kev hloov pauv no yog kev hloov ntawm lub cev thiab qee qhov yog kev hloov tshuaj lom neeg. Cov kev hloov ntawm lub cev yog feem ntau yog tshwm sim nyob rau hauv qhov nce ntawm specular reflection nyob rau saum npoo ntawm cov khoom, uas muaj ib tug tej yam cuam tshuam rau cov xim ceev. Piv txwv li, compound lub teeb zaj duab xis, UV kua roj vanish, calendering, thiab lwm yam., cov xim ceev yuav nce. Cov xim ntom ntom ntawm cov khoom luam tawm tom qab cov yeeb yaj kiab ua haujlwm thiab cov roj matt txo qis. Cov tshuaj hloov pauv feem ntau yog los ntawm laminating kua nplaum, kua roj vanish, UV roj thiab lwm yam. Cov ntaub ntawv no muaj ntau yam kuab tshuaj, uas yuav ua rau muaj tshuaj lom neeg cov tshuaj tiv thaiv nyob rau hauv cov xim ntawm cov luam ntawv number case txheej yuav ua rau cov xim hloov. Yog li ntawd, raws li cov khoom lag luam luam tawm rau kev ntim khoom offset luam ntawv, yog tias muaj cov txheej txheem tom qab xovxwm thaum lub sijhawm luam ntawv, kev hloov pauv ntawm lub cev thiab tshuaj lom neeg ntawm kev xa xovxwm yuav tsum raug coj mus rau hauv tus account kom txiav txim siab tus nqi ntom ntom thiab Lab tus nqi ntawm txheej number case. thaum luam ntawv.

5. Dry retreat ceev tus nqi:

Tam sim ntawd tom qab cov khoom luam tawm offset luam tawm, tus number case tseem nyob hauv lub xeev ntub dej, thiab tus nqi ntom ntom ntsuas lub sijhawm no txawv ntawm tus nqi ntom ntsuas tom qab luam tawm qhuav. Tus nqi txawv yog qhov siab thaum ntub dej, thiab tus nqi ntom ntom yog tsawg thaum qhuav, uas yog qhov tshwm sim ntawm cov nqi qis dua. Qhov no yog vim tias txheej number case tsuas yog luam tawm muaj qee yam qib. Nws yog feem ntau yog reflected nyob rau hauv specular reflection ntawm nto, uas zoo nkaus li kaj thiab ci. Thaum tus number case txheej qhuav, muaj diffuse reflection ntawm qhov chaw, thiab lub ntuj luster yog duller dua li thaum nws nyuam qhuav luam tawm. Txhawm rau kom ntseeg tau tias cov xim sib txawv ntawm cov khoom batch raug txo kom ntau li ntau tau thaum lub sij hawm luam ntawv ib txwm, peb siv tib txoj kev ntsuas ntub dej los tswj. Qhov ntawd yog hais tias, thawj zaug cov khoom luam tawm nyob rau hauv lub xeev ntub dej, tus nqi ntub dej thiab L * a * b * tus nqi raug ntsuas tam sim tom qab tus neeg siv khoom kos npe thiab pom zoo. Thaum luam tawm cov khoom tom qab (lub xeev ntub dej), tswj cov xim raws li tus nqi ceev thiab L * a * b * tus nqi ntsuas thawj zaug. Yog lawm, yog tias siv lub densitometer nrog cov khoom siv polarizer, nws tuaj yeem tshem tawm lub teeb tsim los ntawm kev xav txog ntawm qhov chaw ntawm tus number case txheej. Cov ntub dej ntsuas los ntawm nws yog qhov ze ze rau qhov ntom ntom ntom ntom ntom, thiab nws kuj tseem tuaj yeem pab tswj qhov txo qis chromatic aberration.

6. Printing siab:

Kev luam ntawv siab yog ib qho ntawm cov xwm txheej rau kev hloov tus cwj mem. Txij li qhov saum npoo ntawm daim ntawv luam ntawv thiab daim pam tsis tuaj yeem tiaj tus kiag li, qhov saum npoo ntawm daim ntawv yog inevitably tsis sib luag los yog tsis sib xws. Yog tias lub tshuab luam ntawv tsis txaus lossis tsis sib npaug, cov txheej txheem number case yog qhov tsis sib xws, yog li nws yuav tsum ua tiav "peb theem" ​​hauv cov txheej txheem, uas yog, qhov chaw ntawm cov ntawv luam ntawv, daim pam, substrate thiab hauv ob sab phlu. qhov saum npoo yuav tsum tau flattened. Nyob rau hauv cov xwm txheej, tsuas yog ib txheej nyias nyias tuaj yeem tau txais cov xim number case ntau dua ntawm cov ntawv luam tawm los ntawm kev sib npaug ntawm kev luam ntawv.

Thaum lub tshuab luam ntawv tsis txaus lossis tsis sib npaug, thiab tsis muaj kev sib cuag tsis zoo ntawm lub cev hauv ob sab phlu thiab lub phaj luam ntawv, nws yog ib qho tsim nyog yuav tsum tau nce tus naj npawb ntawm input input kom tau raws li qhov pom ntawm inking ntawm lub phaj. Txawm li cas los xij, qhov no yuav tsis tsuas yog nce tus cwj mem noj xwb, tab sis kuj yooj yim ua rau cov xim sib txawv ntawm kev luam ntawv thiab cov khoom luam tawm, yog li ua txoj haujlwm zoo ntawm "peb qib" (tus number case roller level, kab rov tav roller level, roller level) thiab siv cov ntawv luam tawm tsis tu ncua thiab tsis tu ncua. Kev kub siab tuaj yeem tiv thaiv qhov sib txawv ntawm cov xim uas tshwm sim los ntawm lub siab tsis zoo.

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

Offset luam ntawv cov khoom yuav tsum muaj lub teeb ci thaum saib cov xim, thiab tsis muaj xim tuaj yeem pom yam tsis muaj lub teeb, tab sis yog tias cov yam ntxwv ntawm lub teeb ci txawv, ces qhov sib txawv xim yuav loj heev. Feem ntau, peb xav kom cov xim yuav tsum tau saib nyob rau hauv cov xwm txheej ntawm lub teeb ntuj (uas yog, tus qauv teeb qhov chaw). Yog tias lub teeb pom kev zoo tib yam siv los ua lub teeb ci los saib cov xim, cov xim yuav pom daj, nws nyuaj rau kev txheeb xyuas cov xim, thiab cov khoom luam tawm zaum kawg yuav muaj xim loj. Tsis tas li ntawd, qhov siv ntawm lub teeb thiab lub kaum sab xis ntawm lub teeb pom kev yuav cuam tshuam rau kev txheeb xyuas xim. Nyob rau hauv tib lub teeb ci, qhov kev siv ntawm lub teeb pom kev ntawm lub teeb pom kev zoo yog txiav txim siab los ntawm qhov kev ncua deb ntawm cov pov thawj thiab lub teeb ci. Cov nyob ze yog cov muaj zog, cov nyob deb yuav qaug zog. Yog li ntawd, peb feem ntau xyuam xim rau ob lub ntsiab lus hauv peb txoj haujlwm, txawm tias nws yog nruab hnub lossis hmo ntuj: ib qho yog siv lub teeb pom kev zoo (txog 400-700} wavelength), thiab lwm yam yog ua tib zoo saib xyuas qhov sib npaug ntawm lub teeb qhov chaw thiab lub kaum sab xis ntawm illumination. Rau cov khoom uas xav tau xim siab, tus cwj mem xim xim ntawm cov ntawv luam tawm yuav tsum muab tso rau ntawm tus qauv qauv rau kev sib piv, yog li vim qhov sib txawv me me ntawm lub kaum sab xis saib, qhov kev qhia xim yog qhov tseeb. Yog li, cov txheej txheem kev coj ua qhia peb tias qhov sib txawv ntawm cov yam ntxwv ntawm lub teeb ci thiab lub kaum sab xis saib yuav cuam tshuam ncaj qha rau kev txheeb xyuas cov xim (yinshua96.cn).

2. Qhov thib ob tshwm sim (muaj xim sib 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 tias cov xim ntawm thawj ob peb nplooj ntawv yog qhov tseeb. Thaum tus number case thiab dej tsis sib npaug, lawv pib qhib txhua txoj kev. Thaum lub sij hawm luam ntawv, tus nqi ntawm cov dej thiab tus cwj mem yog hloov tas li, thiab cov xim qhib thaum hloov kho, uas yuav ua rau muaj xim sib txawv ntawm tib cov khoom luam tawm. Qhov no muaj ntau yam ua rau tus thawj coj ntawm qib kev txawj ntse, kev paub dhau los, thiab tus cwj pwm, thiab ob qho tib si muaj cov xim sib txawv ntawm tib batch ntawm cov khoom los ntawm kev tsis muaj peev xwm.

2. Kev daws teeb meem:

Offset printing yog raws li lub hauv paus ntsiab lus ntawm repulsion ntawm roj thiab dej. Cov dej no hais txog qhov kev daws teeb meem. Nws qhov loj me ncaj qha cuam tshuam rau cov xim ntawm cov xim txheej. Cov xim ntawm txheej number case loj yog lub teeb, thiab cov xim ntawm cov number case me me yuav tsaus dua. Qhov dej ntau dua, qhov hnyav dua qhov emulsification ntawm tus number case. Emulsified inks yog npub thiab lub teeb xim. Cov khoom luam tawm ntawm emulsified number case tsis tsuas yog muaj xim sib txawv, tab sis kuj muaj teeb meem zoo xws li nplaum, tsis ziab, thiab tsis muaj zog luam ntawv. Yog li ntawd, hauv kev luam ntawv thiab kev ua haujlwm, qhov loj ntawm cov kua ntub dej ntawm cov ntawv luam ntawv yuav tsum tau tswj nruj me ntsis, thiab qhov sib npaug ntawm tus number case thiab dej yuav tsum ua kom zoo.

3. Printing ceev:

Qhov ceev ntawm lub tsheb hauv Cigarette Box luam ntawv yuav cuam tshuam rau cov xim tob ntawm cov khoom luam tawm. 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 thiab cov dej noo ntawm lub phaj qeeb sib txawv. Cov dej volatilization ntawm cov phaj luam ntawv nthuav qhia me me, thiab cov dej volatilization ntawm qeeb luam ntawv phaj yog loj. Vim qhov kev hloov pauv ntawm qhov loj ntawm cov dej, tus number case thiab dej tsis sib npaug, thiab cov xim ntawm tus number case yuav inevitably hloov. Yog li ntawd, peb yuav tsum tau them sai sai rau qhov ceev ceev thaum luam ntawv, thiab peb yuav tsum tsis txhob tsav ceev ib ntus. Tsav qeeb rau ib pliag, yog li cov khoom luam tawm yuav muaj 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, qee qhov kev tshaj tawm txawv teb chaws qhia qhov siab tshaj plaws ntawm 16, 000 nplooj ntawv / teev, thiab qhov siab tshaj plaws ntawm cov tshuab hauv tsev yog 8, 000 nplooj / teev. Cov speeds no tsis ruaj khov speeds. Feem ntau hais lus, txawm hais tias nws yog lub tshuab tuaj txawv teb chaws lossis lub tshuab hauv tsev, nws yog qhov zoo tshaj plaws uas qhov ceev ruaj khov yog 70 feem pua ​​​​ntawm qhov siab tshaj plaws, uas yog, lub tshuab tuaj txawv teb chaws yog li 11, 000 nplooj / teev, thiab tshuab hauv tsev yog li 5,600 daim / teev. Xws li kev ceev tuaj yeem tswj tau yooj yim. Ink balance kom txo tau chromatic aberration.

4. Tsis zoo number case roller:

Nyob rau hauv cov txheej txheem luam ntawv offset, seb cov khoom luam tawm tuaj yeem tau txais cov xim number case, qhov zoo ntawm cov menyuam roj hmab plays lub luag haujlwm tseem ceeb heev. Feem ntau, muaj peb hom roj hmab chais: number case hloov cov menyuam, number case faib cov menyuam thiab inking rollers, uas muaj kev cuam tshuam zoo rau cov xim ntawm tus number case. Lub elasticity, viscosity, ncig, hardness thiab deg tiav ntawm tus number case roller feem ntau txiav txim siab tus number case zoo ntawm cov khoom luam tawm. Yog hais tias lub elasticity ntawm cov menyuam inking yog tsis zoo, lub viscosity yog tsis txaus, thiab cov menyuam lub cev yog eccentric. Thaum lub colloid nyuaj heev thiab cov colloid yog aging, nws yog ib qho yooj yim uas yuav ua rau uneven los yog tsis ruaj tsis khov inking thaum lub sij hawm luam ntawv, ua rau cov printing number case xim ntawm daim ntawv npaj inconsistent. Yog li ntawd, nws yog ib qho tsim nyog los xyuas kom meej qhov zoo ntawm cov roj hmab cov menyuam thaum lub sij hawm luam ntawv los xyuas kom meej tias tus number case siv rau lub phaj luam ntawv yog qhov zoo ib yam hauv txhua lub voj voog luam ntawv. Yog li ntawd, cov menyuam roj hmab yuav tsum tau muab ntxuav hauv kev ua haujlwm ib txwm ua, kom cov ntawv plua plav thiab cov khoom tsis huv uas tseem tshuav ntawm cov menyuam roj hmab tuaj yeem raug tshem tawm kom ntseeg tau tias cov ntawv sib kis ntawm tus number case. Nyob rau tib lub sijhawm, kev sib cuag ntawm tus number case rollers thiab nruab nrab ntawm tus number case rollers thiab cov ntawv luam ntawv yuav tsum tau hloov kho, txwv tsis pub nws yuav ua rau tsis sib xws ntawm tus number case hloov thiab xim sib txawv loj. (yinshua96.cn)

5. Kev tu cov khoom siv:

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

Muaj ntau qhov laj thawj rau kev tsim cov xim luam ntawv sib txawv, thiab cov txheej txheem tswj tsis txwv rau cov no. Qhov no xav kom peb tsis tu ncua tshawb nrhiav thiab sib sau ua ke hauv kev lag luam luam ntawv, thiab txhim kho tus cwj pwm zoo ntawm kev sau ntawv, uas yog qhov tsim nyog rau kev txhim kho peb tus kheej lub peev xwm, thiab saib ntau ntxiv hauv peb lub sijhawm. Cov phau ntawv hais txog kev luam ntawv theoretical, nrog rau cov theories los qhia, tuaj yeem zam ntau qhov kev taug kev. Cov neeg siv khoom muaj kev xav tau siab dua thiab siab dua rau qhov zoo ntawm cov khoom luam tawm. Rau peb, nws yog lub siab thiab lub zog tsav. Fim nws, thiab koj yuav mus smoother thiab smoother ntawm txoj kev mus rau kev vam meej.