Yuav ua li cas nrog cov xim xim noo ntawm ntim khoom thiab luam tawm cov khoom

1. Kev nkag siab qhov yooj yim xim xim kom ua kom txaus

1) Ntau yam xim xim, xws li liab, ntsuab, xiav thiab lwm yam xim ntawm cov kab lus ntawm cov ntawv cim thiab logo qauv thiab cov xim sib sib zog nqus uas tsis tas yuav hierarchically ua, cov neeg siv khoom dav dav xav tau cov xim muaj zog thiab kaj lug rau cov lus hais cim no thiab logo qauv. Hauv kev tshawb xav, nws yog muab tag nrho kev ua si rau qhov siab tshaj qhov khoom ntwm ntawm cov offset printing number case kom ua tiav qhov siab tshaj plaws. Txawm hais tias 95% ntawm lub dots yuav nce rau 100% tom qab luam ntawv, qhov no txawv ntawm cov nyhuv tsim los ntawm 100% khoom luam ntawv. 95% ntawm cov dot tsuas yog ncav cuag qhov khoom ntom ntwm hauv 95% ntawm thaj chaw teev, thiab qhov nce ntxiv yog 5 Txawm tias muaj kua mem kua hauv thaj chaw%, tus number case ceev kuj tsawg dua. Tus number case ceev ntawm 95% dots nce rau 100% tsis yog tuab thiab qhov ci zoo li cov khoom ntog ntawm 100%.

2) Lub ntuj xiav, dej hiav txwv, nplooj ntsuab, nyom thiab lwm yam xim hauv cov duab thaij duab toj roob hauv pes, vim tias hauv neeg lub siab

tau tsim lub tswv yim ruaj khov. Yog li, hauv txoj ntsiab cai, xim xim C version yuav tsum muaj xim tsaus nti raws li qhov tsim nyog xim ntim ntawm cov hue thaum cov xim ua, thiab cov nplooj ntsuab, cov nyom thiab lwm cov zaub ntsuab kuj tau siv rau Y version, ua rau cov xim ntsuab thiab tiag tiag Cov. Rau cov xim yooj yim ntawm xim liab, ntsuab, thiab xiav uas yuav tsum muaj gradation, raws li cov xim nrum thiab grey yam ntxwv ntawm kev ua lag luam dav offset luam ntawv inks, kev teeb tsa zoo tshaj plaws yog:

Liab=M95% + Y85%

Ntsuab=Y95% + C85%

xiav=C95% + M80%

3) Cov cim teeb meem ntawm cov teev nqi ntawm lub ntuj xiav: ib qho yog kom tsis txhob tso Y Y hauv qab 40% ntawm C xim phaj los ua kom lub ntuj xiav zoo nkauj dua; tus tod yog muab ib co Y xim tso rau saum 50% ntawm C xim phaj xim kom lub ntuj xiav Nws tsis' t tshwm liab, tab sis ua rau xiav xiav thiab tuab. Tib lub sijhawm, txij li lub ntuj ntsuab xiav siv niaj hnub no yog xim liab, liab liab yog tus neeg pom zoo txo ​​qis kom lub ntuj xiav zoo nkauj dua.

4) Cov nplooj liab liab ntawm Xiangshan nyob rau lub caij nplooj zeeg tuaj yeem coj los ua cov xim liab dua li cov nplooj liab tiag tiag. Cov xim yooj yim ntawm qhov tob Y yog 100%: M yog 95%, thiab C tuaj yeem tso nyob ib leeg, uas ua rau cov nplooj liab zoo nkauj tshaj plaws hauv qab lub hnub, ua rau tib neeg muaj kev zoo siab rau lub siab.

Cov lus hais los saum toj no hais txog kev hloov hauv kev nrhiav cov xim sib tawg los ntawm cov txheej txheem ntawm cov xim ib txwm muaj thiab qhia txog qhov zoo nkauj ntawm cov xim hauv cov kos duab pom.

2. Cov xim sib sib zog nqus khaws cia gradation

1) Qhov dot qhov kev txiav ntawm cov xim sib sib zog nqus tau yog 65% txog 90%. Vim tias cov dots saum toj no 80% nce ntxiv, qhov gradation yog qhov yooj yim rau kev sib koom ua ke. Yog li no, cov xim yooj yim ntawm qib yog qhov xav tau rau thaj chaw no. Qeb yuav tsum tswj tau nyob rau hauv kev sau ua ntej tias kev ceev ntawm lub nras txaus. Yuav tsum tsis txhob ua rau qhov chaw ntawm tag nrho cov xaim ntom ntom, uas ua rau theem ntawm cov xim pib. Kev ua cov khoom tseem ceeb: Qhov tob ntawm cov xim yooj yim uas yuav tsum muaj qib, qhov tseem ceeb yog txo cov xim kom tsawg kawg nkaus ntawm 80% ntawm thaj chaw, kom nws cais tawm ntawm cov xim thaiv, kom cov luam ntawv tsis tuaj yeem tsuas yog luam tawm cov khoom ntom ntom, tab sis kuj tseem tswj qib. Cov.

2) Hauv kev ua xim, nws yog qhov nyuaj rau qhov sib npaug ntawm qhov ci ntsa iab thiab qhov saturation ntawm cov xim nrog lub teeb thiab tsaus ntau hauv xim. Yog tias koj xav khaws lub hnub ci thiab tsaus ntau hauv cov xim, koj yuav tsum siv cov xim sib dhos, thiab siv cov xim ntxiv rau kev ntim khoom thiab luam tawm, thiab pom qhov tseeb ntawm cov xim nws yuav txo qis thiab qhov grayscale yuav nce ntxiv. Yog tias koj xav ua cov xim kom ci, koj yuav tsum tso cov xim sib dhos tsawg dua, yog li cov teeb ci thiab cov xim tsaus hauv cov xim yuav cuam tshuam. Txog kev ua kom tiav thiab ntim khoom, cov xim uas muaj xim thiab zoo nkauj yuav tsum hais txog, uas cuam tshuam rau lub teeb thiab tsaus ntau ntawm qee xim. Nyob rau hauv txoj kev no, daim duab luam tawm kawg muaj qhov pom zoo ntawm cov xim thiab ua kom pom tseeb. Qhov tseem ceeb yog txhawm rau tshawb" degree", thiab kev nkag siab ntawm"" yog qhov ua tau zoo ntawm tus neeg teb xov tooj' s qib zoo nkauj, uas yog ncaj qha cuam tshuam nrog cov xim kos duab nyhuv.

3) Cov qauv sau ntawv hauv cov xim sib sib zog nqus yog qhov tseem ceeb qhia los ntawm lub ntsiab xim, xws li cov xim sov xws li liab thiab txiv kab ntxwv: nws yog qhia los ntawm Y thiab M xim phaj; cov xim txias xws li ntsuab thiab cyan yog qhia los ntawm C xim phaj. Yog li no, cov txheej txheem txheej ntawm cov qauv xim tseem ceeb yuav tsum tau hais txog, thiab cov yam ntxwv ntawm txheej txheej ntawm lub hom khoom tiag tiag yuav tsum ua kom pom tseeb.

4) Cov xim yooj yim ntawm nruab nrab-lub suab thaj yog qhov tsim nyog. Lub halftone thaj tsam hauv nruab nrab-lub suab nrov yog 35% txog 65%, uas yog qhov tseem ceeb ntawm cov khoom thiab thaj chaw tseem ceeb rau kev ua xim. Txhawm rau kho cov xim ntawm thaj chaw no kom zoo rau qhov kev zoo txaus, qhov tseem ceeb yog kom tob tob nws los ntawm kwv yees li 5% ntawm cov hauv paus ntawm qhov yuav tsum muaj xim ntim ntawm lub hue Piv txwv, safflower, lub teeb thiab nruab nrab-laus M xim yuav tsum muaj xim ntim ntawm 40%. Nws tuaj yeem sib zog rau 45% kom ua rau cov pob liab liab ntau thiab pom tseeb.