Grey tshuav nyiaj li cas thiab cov ntsiab lus dot expansion (1)
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, 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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Grey Balance yog lub hauv paus rau txhua txoj kev sib cais ntawm cov xim kom ncav cov yeeb yaj duab xim. Yog tias grey tshuav tsis tuaj yeem ua tiav thaum xim sib cais, qhov txho hauv daim tseem tsis ntev tom qab luam, thiab lwm cov xim yuav tsis tsim xim xim.
Thaum siv cov xim sib cais technology (piv txwv li, thaum hloov ntawm RGB cov dluab mus rau CMYK cov duab), lub ntsiab yam tseem ceeb ntawm qhov gray tshuav nkhaus yog tus number case thiab cov ntawv ua ke, qhov dub version cim hom, dub phaj qib tsim, thiab cov dot mob nkhaus. Thaum twg cov plaub saum toj no raug txiav txim siab, qhov sib npaug ntawm grey sib npaug yog txiav txim siab.
Ua ntej, qhov sib npaug ntawm qhov txho thiab nws cov teeb meem
(1) Ntsiab lus nyiaj Grey
Lub tswvyim ntawm gray tshuav nyiaj li cas yuav piav tau tias: daj, magenta thiab cyan peb cov xim plates ua nruab nrab gray ntawm cov ntawv luam tawm raws li qhov feem pua ntawm cov cheeb tsam sib txawv.
Raws li txoj kev uas yuav txo txoj kev uas muaj xim, qhov kev hloov ntawm qhov kev nyiam tshaj ntawm C, M, thiab Y thawj cov xim phom yuav tsum yog xim dub. Ib yam li ntawd, tib cov nqi ntawm super-saturation ntawm peb thawj xim xim hauv siab yuav tsum kuj tsim grey ntawm txawv ci ci. Txawm li cas los xij, vim hais tias tus cwj mem xiam yog siv cov teeb meem uas muaj insurmountable nyob rau hauv cov cim ntawm hue, saturation thiab lightness, tus nqi sib npaug ntawm peb qib xim inks tsis tuaj yeem muab tau nruab nrab grey. Thiaj li yuav ua rau peb cov thawj xim xim sib tshooj thiab teeb pom kev zoo ntawm qhov sib txawv ntawm qhov sib npaug, nws yog qhov yuav tsum tau hloov qhov piv ntawm qhov peb cov xim xim raws li tus yam ntxwv ntawm tus cwj pwm, yog li paub qhov gray tshuav uas yog qhov tseem ceeb rau tsuam xim.
(2) Yam muaj feem xyuam nrog qhov sib npaug ntawm grey
Muaj ntau ntau yam uas cuam tshuam rau qhov sib npaug ntawm grey. Nws tuaj yeem hais tias yuav luag txhua qhov txuas hauv cov xim txheej txheem yuav ua rau muaj kev hloov hauv grey tshuav. Lub ntsiab tseem ceeb yog:
1. Ntaus qauv
Cov phev ua los ntawm ntau cov tuam txhab muaj ntau grey sib npaug kev sib raug zoo. Ua ntej lub phaj ua, nws yog qhov yuav tsum ntsuas cov qauv ntawm tus cwj mem (xws li Hawj, saturation thiab ci ci), tus cwj pwm ntawm lub cev thiab tshuaj ntawm tus cwj pwm (xws li cov ziab kom qhuav thiab cov xim ntawm tus cwj pwm). Qhov kev sib txheeb ntawm kev sib tw grey, cov teeb meem no yog muab los xav thaum ua cov phiaj xwm. Tsis tas li ntawd, cov ntawv luam tawm ntawm tus cwj pwm kuj yuav cuam tshuam rau qhov txho tshauv. Piv txwv, hloov hauv viscosity, rheological zog, thiab thickness ntawm tus number case txheej yuav cuam tshuam rau cov xim luam ntawm tus thawj, ua rau kev puas tsuaj rau qhov txho tshauv.
2. Cov yam ntxwv ntawm daim ntawv
Txawv hom ntawv muaj qhov sib txawv ntawm cov xim uas muaj peev xwm ntawm tib lub cwj mem. Cov ntaub ntawv offset thiab offset ntawv feem ntau siv hauv lithographic offset luam ntawv muaj ntau gray tshuav tsis txog rau peb thawj xim xim hauv. Qhov thib ob loj qhia ntawm daim ntawv cov cawv rau ntawm grey tshuav yog nws cov xim dawb. Tus so yog smoothness, haum cov yam ntxwv, gloss, opacity thiab pH. Cov kev hloov no yuav cuam tshuam qhov tseeb ntawm kev sib tw ntawm grey.
3. Luam cov xwm txheej
Ntau yam ntawm cov phaj luam tawm, cov kab muaj pes tsawg thiab cov yam ntxwv ntawm cov kua hluav taws xob, cov xim ntawm cov xuab zeb, cov yam ntxwv ntawm lub teeb ci, thiab tej yam kev mob ntawm kev raug mob thiab kev txhim kho txhua yam cuam tshuam rau qhov kawg grey tshuav.
4. Luam cov xwm txheej
Cov cwj pwm ntawm cov zwj ceeb ntawm cov zauv hauv qhov grey feem ntau yog tau txais kev pom zoo hauv ob qho:
(1) Lub tshuab luam ntawv Yam khoom uas tuaj yeem ua rau hauv tshuab luam ntawv thiab cuam tshuam txog qhov sib npaug ntawm qhov grey muaj xws li hom thiab tuab ntawm daim pam, hom ntawm meem, lub siab printing, luam ceev, hom thiab raug lub tshuab luam ntawv , thiab cov zoo li no.
(2) Dampening solution Tej yam cuam tshuam muaj xws li kev tsim tshuaj rau dampening solution, dej noj, deg nro thiab pH nqi dampening kua, dej kub, emulsifying degree dampening kua thiab number case, thiab cov zoo li.
Ntawm qhov ntau yam uas tau hais los saum no, txawm tias cov luam ntawv thiab luam ntawv muaj kev ntxim ntxhi rau ntawm qhov txho tshauv, lawv tsis tuaj yeem xav txog thaum cov phaj ua. Yog tias koj nyob hauv txhua yam uas cuam tshuam rau qhov sib npaug ntawm grey, koj yuav tsis tau hauj lwm vim tias muaj ntau cov qhob. Yog li no, lub ntsiab tseem ceeb los xav txog cov phaj ua yog number case thiab cov ntawv, uas nyob rau hauv lem yuav tsum tau ntaus nqi rau number case thiab cov ntawv ua ke. Qhov no yog vim li cas Photoshop ua ntej yuav tsum xaiv tus lej thiab ntawv ua ke thaum teem qhov tsis sib cais, thiab ces xaiv lwm yam mob los txiav txim qhov ua rau ntawm qhov txho gray.
Thib ob, tus lej number case thiab ntawv ua ke
Ntau tus lej thiab ntawv ua ke muaj kev sib txheeb sib txawv sib txawv uas yuav tsim cov xim sib txawv.
Cov duab ua software uas sawv cev los ntawm Photoshop feem ntau yog siv cov SWOP (Coated) ua qhov kev tsim teeb rau xim sib cais thaum ua cov xim sib cais. Nws yog siv los ntawm kev siv cov phev ua kom haum rau cov lus tshaj tawm ntawm Offset Kev Tshawb Fawb Ntawv (Specifications for Web Offset Ntawv luam tawm) ntawm daim ntawv phom. sau. Feem ntau, kev sib cais zoo sib txawv nrog rau hom kev ua no, txawm tias qhov kev ua raws li txoj cai yuav txawv, tiam sis rau DTP cov neeg tsav tsheb uas tsis paub nrog kev sib cais ntawm kev sib txawv thiab kev luam ntawv, qhov no nws yog qhov kev xaiv zoo. Txawm hais tias Photoshop tsuas yog hais txog cov ntawv number case thiab cov ntawv ua cov Colour Ink Colours, nws tau hais txog hom cwj mem, thiab tseem muaj cov ntawv uas yuav siv tau thaum luam ntawv.
Cov ntawv siv hauv kev lag luam luam tawm tau muab faib ua ntau yam hauv peb pawg, Coated (coated paper, los yog daim ntawv coated), Uncoated ntawv (tsis-coated ntawv, kuj hu ua offset daim ntawv), thiab Newsprint (ntawv xov xwm). Kev xyuam xim, gloss, kua number case absorbing, immersion, dej ntim dej, thiab cwj pwm hloov ntawm cov nplooj ntawv ntawm peb hom ntawv sib txawv, thiab cov nqi ntawm lub suab, tus lej number case, thiab tus lej hloov cwj pwm uas tau muab luam tawm thaum lub sijhawm luam tawm kuj tseem txawv.
Ntxiv nrog rau SWOP (Coated), muaj peb qho ob peb ntawm cov lej thiab cov ntawv xov xwm luam ntawv: AD-LITHO (Newsprint), Dainippon Ink, European number case thiab ntawv ua ke (coated paper, newsprint thiab offset ntawv), Ntxiv rau coated ntawv, muaj plaub hom ntawv xov xwm thiab ntawv offset, Toyo Inks thiab ntawv ua ke (ntaub ntawv coated, matt coated paper, newsprint thiab offset paper). Txhua daim ntawv txiav tawm ntawm cov ntawv (number case) muaj qhov sib txawv ntawm qhov nruab nrab ntawm midtone dot nce nqi, uas yog tus zauv cim uas tau xam lub sijhawm ntev.
Yog tias tus lej thiab daim ntawv ua ke uas siv los ntawm tus neeg siv tsis muaj nyob hauv daim ntawv, koj tuaj yeem siv cov pov thawj ntawm tus number case thiab cov ntaub ntawv ua ke uas koj tau siv los siv cov tsis tau thiab tsim kom tau ib qho kev cai xaj ua ke nrog.
Feem ntau, cov cwj mem xaw cim rau kev siv luam ntawv yuav tsis txawv ntau ntawm cov ntawv luam sib txawv ntawm tib hom (printers). Piv txwv, tib lub tshuab luam Phis thib Tektronix Phaser II siv tib lub cwj mem, tiam sis qhov txiaj ntsim ntawm qhov txawv yuav txawv me ntsis thaum siv lwm lub tshuab luam ntawv. Yog li, rau cov hom ntawv sib txawv ntawm tib hom, qhov tseem ceeb yuav tau hloov yog qhov txiaj ntsig tau txais txiaj ntsig tau raws li qhov tseeb siv, tsis txhob hloov tus cwj mem. Rau cov duab uas siv rau hauv digital presses, qhov teeb meem qub yuav tsum ntsib thaum sib cais xim.