Uma nje imibala emithathu ye-R+G+B ingqubuzana ngokulinganayo, imibala engaphezu kwamashumi ezigidi ingakhiqizwa.Kungani emnyama?Okumnyama kungakhiqizwa uma isilinganiso se-RGB silingana, kodwa kuthatha oyinki abathathu ukukhiqiza umbala owodwa, ongenakwenzeka ngokombono wezomnotho.Eqinisweni, umnyama usetshenziswa kakhulu enqubweni yokuklama, empeleni yingakho kusetshenziswa ukuphrinta kwemibala emine.Kukhona elinye iphuzu: lapho omnyama okhiqizwa i-RGB uqhathaniswa nomnyama ohlanganiswe ngqo noyinki, owokuqala unomqondo ongelutho, kuyilapho owenziwe uzizwa unzima kakhulu.
1. Ngomgomo wemibala emine, kulula kakhulu kuwo wonke umuntu ukwamukela.Ilingana namafilimu amane ngesikhathi sokukhishwa, iphinde ilingane neziteshi ezine ze-cyan, i-magenta, ephuzi, nemnyama (C, M, Y, K) eziteshini ze-PHOTOSHOP.Ukuguqulwa kwesiteshi lapho sicubungula isithombe empeleni kuwushintsho efilimini.
2. Amanetha, amachashazi namakhona, amanetha ayisicaba namanetha alengayo.Imeshi: ngamayintshi ayisikwele, inani lamachashazi abekwe, 175 anezikhala zombhalo ovamile, kanye nezikhala ezingama-60 kuye kweziyi-100 zephephandaba, kuye ngekhwalithi yephepha.Ukuphrinta okukhethekile kunama-meshes akhethekile, kuye ngokuthi ukuthungwa.
1. Ifomethi nokunemba kwesithombe
Ukunyathelisa kwesimanje kwe-offset kusebenzisa ukunyathelisa kwe-offset (imibala emine yokuphrinta ngokweqile), okungukuthi, isithombe sombala sihlukaniswe ngemibala emine: cyan (C), umkhiqizo (M), ophuzi (Y), omnyama (B) ifilimu yamachashazi emibala emine, bese uphrinta I-PS plate iphrintwa izikhathi ezine ngomshini wokunyathelisa we-offset, bese kuba umkhiqizo ophrintiwe ngombala.
Izithombe zokuphrinta zihlukile ezithombeni ezijwayelekile zekhompiyutha.Izithombe kufanele zibe kwimodi ye-CMYK esikhundleni semodi ye-RGB noma ezinye izindlela.Lapho ukhipha, isithombe siguqulwa sibe amachashazi, okunembayo: dpi.Ubuncane bokunemba kwethiyori yezithombe zokuphrinta kufanele bufinyelele ku-300dpi/pixel/intshi, futhi izithombe ezinhle ovame ukuzibona kukhompuyutha ngokuvamile zizwakala zizinhle kakhulu kumonitha.Eqinisweni, eziningi zazo ziyizithombe zemodi ye-72dpi RGB, futhi eziningi zazo azikwazi ukusetshenziselwa ukuphrinta.Izithombe ezisetshenzisiwe akufanele zivezwe njengezijwayelekile.Ungacabangi ukuthi izithombe zingasetshenziselwa ukuphrinta ngoba zinhle nge-acdsee noma enye isoftware, futhi zinhle kakhulu ngemuva kokukhuliswa.Kufanele zivulwe ku-photoshop, futhi usayizi wesithombe usetshenziselwa ukuqinisekisa ubuqiniso.Ukunemba.Isibonelo: isithombe esinesixazululo esingu-600*600dpi/pixel/intshi, khona-ke usayizi waso wamanje ungakhuliswa ube ngaphezu kokuphindwe kabili futhi usetshenziswe ngaphandle kwenkinga.Uma ukulungiswa kungu-300*300dpi, khona-ke kungancishiswa kuphela noma usayizi wangempela awukwazi ukukhuliswa.Uma ukulungiswa kwesithombe kungu-72*72dpi/pixel/inch, khona-ke usayizi waso kufanele wehliswe (ukunemba kwe-dpi kuzoba kukhudlwana), kuze kube yilapho ukulungiswa kuba ngu-300*300dpi, kungasetshenziswa.(Lapho usebenzisa lo msebenzi, setha into ethi "Redefine Pixel" kunketho kasayizi wesithombe ku-Photoshop ingabi nalutho.)
Amafomethi wesithombe ajwayelekile yilawa: TIF, JPG, PCD, PSD, PCX, EPS, GIF, BMP, njll. Uma ubhala, umbala we-TIF, i-bitmap emnyama nomhlophe, i-EPS vector noma i-JPG
2. Umbala wesithombe
Ngokuphathelene namagama athile ochwepheshe anjengokuphrinta ngokweqile, ukuphrinta ngokweqile, ukukhipha imbobo, kanye nombala wamabala ekuphrinteni, ungabhekisela kwezinye izisekelo zokuphrinta ezihlobene.Nakhu okunye okunengqondo okufanele kunakwe.
1, phuma ngaphandle
Kukhona umugqa wezinhlamvu eziluhlaza okwesibhakabhaka ezicindezelwe epuletini elingezansi eliphuzi, ngakho-ke epuletini eliphuzi lefilimu, indawo yezinhlamvu eziluhlaza okwesibhakabhaka kufanele ingabi nalutho.Okuphambene nakho kuyiqiniso ngenguqulo eluhlaza okwesibhakabhaka, ngaphandle kwalokho into eluhlaza okwesibhakabhaka izophrintwa ngokuqondile kokuphuzi, umbala uzoshintsha, futhi uhlamvu lokuqala oluluhlaza okwesibhakabhaka luzoba luhlaza.
2. Ukuphrinta ngokweqile
Kukhona umugqa wezinhlamvu ezimnyama ezicindezelwe epuletini elithile elibomvu, khona-ke indawo yezinhlamvu ezimnyama epuleti elibomvu lefilimu akufanele ivalwe.Ngenxa yokuthi okumnyama bungabamba noma yimuphi umbala, uma okuqukethwe okumnyama kukhishwa imbobo, ikakhulukazi umbhalo omncane, iphutha elincane ekuphrinteni lizokwenza ukuthi unqenqema olumhlophe ludalulwe, futhi umehluko omnyama nomhlophe mkhulu, okulula ukukubona.
3. Imibala emine emnyama
Lokhu futhi kuyinkinga evamile.Ngaphambi kokukhipha, kufanele uhlole ukuthi umbhalo omnyama efayeleni lokushicilelwa, ikakhulukazi umbhalo omncane, usepuletini elimnyama kuphela, futhi akufanele uvele kwamanye amapuleti anemibala emithathu.Uma ivela, ikhwalithi yomkhiqizo ophrintiwe izokwehliswa.Uma ihluzo ze-RGB ziguqulwa zibe yizithombe ze-CMYK, umbhalo omnyama nakanjani uzoba mnyama ngemibala emine.Ngaphandle uma kucaciswe ngenye indlela, kufanele icutshungulwe ngaphambi kokuthi ifilimu ikhishwe.
4. Isithombe sikumodi ye-RGB
Lapho ukhipha izithombe ngemodi ye-RGB, uhlelo lwe-RIP ngokuvamile luziguqulela ngokuzenzakalelayo kumodi ye-CMYK ukuze zikhishwe.Kodwa-ke, ikhwalithi yombala izoncishiswa kakhulu, futhi umkhiqizo ophrintiwe uzoba nombala okhanyayo, hhayi okhanyayo, futhi umphumela mubi kakhulu.Isithombe siguqulelwa kangcono kumodi ye-CMYK ku-Photoshop.Uma kungumbhalo wesandla oskeniwe, kufanele udlule ohlelweni lokulungiswa kombala ngaphambi kokuba isithombe sisetshenziswe.
Isikhathi sokuthumela: Jul-01-2021