Labarai

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Muddin launuka R+G+B guda uku za su yi karo da juna daidai gwargwado, za a iya samar da fiye da miliyoyin launuka. Me yasa baki? Ana iya samar da baƙar fata lokacin da rabo zuwa RGB daidai yake, amma yana ɗaukar tawada uku don samar da launi ɗaya, wanda ba zai yiwu ba daga mahangar tattalin arziki. A zahiri, ana amfani da baƙar fata da yawa a tsarin ƙira, wanda a zahiri shine dalilin da yasa ake amfani da bugun launi huɗu. Akwai ƙarin ma'ana guda ɗaya: lokacin da aka kwatanta baƙar fata da RGB ya samar tare da baƙar fata kai tsaye gauraye da tawada, tsohon yana da ma'anar banza, yayin da na ƙarshe ke jin nauyi.

1. Tare da ka'idar mai launi huɗu, ya fi sauƙi ga kowa ya yarda. Yayi daidai da fina -finai huɗu yayin fitarwa, kuma yana daidai da tashoshi huɗu na cyan, magenta, rawaya, da baƙi (C, M, Y, K) a cikin tashoshi a PHOTOSHOP. Canjin tashar lokacin da muke aiwatar da hoton shine ainihin canji ga fim.

2. Meshes, dige da sasanninta, ragargazai masu tartsatsi da rataya. Mesh: a kowace murabba'in murabba'in, adadin ɗigogi da aka sanya, raga 175 don kayan bugawa na yau da kullun, da raga 60 zuwa raga 100 don jarida, gwargwadon ingancin takarda. Buga na musamman yana da meshes na musamman, gwargwadon rubutu.

1. Tsarin da ingancin hoton

Bugun biya na zamani yana amfani da bugun biya diyya (overprinting mai launi huɗu), wato, an raba hoton launi zuwa launuka huɗu: cyan (C), samfur (M), rawaya (Y), baki (B) fim ɗin launi mai launi huɗu, sannan a buga farantin PS an buga shi sau huɗu ta hanyar latsawa, sannan samfuri ne da aka buga launi.

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Hotunan bugawa sun sha bamban da hotunan nuni na kwamfuta. Dole ne hotunan su kasance cikin yanayin CMYK maimakon yanayin RGB ko wasu halaye. Lokacin fitarwa, ana canza hoton zuwa dige, wanda shine madaidaicin: dpi. Mafi daidaitaccen ka'idar hotuna don bugu ya kamata ya kai 300dpi/pixel/inch, kuma kyawawan hotuna waɗanda galibi kuke gani akan kwamfutar galibi suna jin daɗi sosai akan mai duba. A zahiri, Yawancin su hotuna ne na yanayin RGB 72dpi, kuma yawancinsu ba za a iya amfani da su don bugawa ba. Bai kamata a nuna hotunan da aka yi amfani da su a matsayin ma'auni ba. Kada kuyi tunanin ana iya amfani da hotunan don bugawa saboda suna da kyau ta hanyar acdsee ko wasu software, kuma suna da kyau bayan ɗaukaka. Dole ne a buɗe su a cikin Photoshop, kuma ana amfani da girman hoton don tabbatar da sahihancin sa. Daidai. Misali: hoto tare da ƙudurin 600*600dpi/pixel/inch, to ana iya faɗaɗa girmansa na yanzu zuwa fiye da ninki biyu kuma ana amfani dashi ba tare da wata matsala ba. Idan ƙudurin shine 300*300dpi, to ana iya rage shi kawai ko kuma girman girman ba za a iya faɗaɗa shi ba. Idan ƙudurin hoto shine 72*72dpi/pixel/inch, to dole ne a rage girman sa (daidaiton dpi zai fi girma girma), har sai ƙudurin ya zama 300*300dpi, ana iya amfani dashi. (Lokacin amfani da wannan aikin, saita abun "Redefine Pixel" a cikin zaɓin girman hoto a cikin Photoshop ga babu.)
Siffofin hoto na yau da kullun sune: TIF, JPG, PCD, PSD, PCX, EPS, GIF, BMP, da sauransu Lokacin da ake tsarawa, launi TIF, baƙar fata da fari bitmap, EPS vector ko JPG

2. Launin hoton

Game da wasu sharuɗɗan ƙwararru kamar overprinting, overprinting, hollowing, da tabo launi a ɗab'i, zaku iya komawa zuwa wasu mahimman bugu masu alaƙa. Anan akwai wasu hankalin kowa wanda dole ne a kula dashi.

1, tsutsa

Akwai layin haruffa masu launin shuɗi da aka danna akan farantin ƙasa mai launin rawaya, don haka akan faifan rawaya na fim, matsayin haruffan shuɗi dole ne ya zama fanko. Sabanin haka ma gaskiya ne ga sigar shuɗi, in ba haka ba za a buga abu mai shuɗi kai tsaye akan rawaya, launi zai canza, kuma asalin launin shuɗi zai zama kore.

2. Tsallake -tsallake

Akwai layin baƙaƙen haruffa da aka danna akan wani ja farantin, to bai kamata a sanya huɗun haruffan baƙaƙe akan jan farantin fim ɗin ba. Saboda baki zai iya riƙe kowane launi, idan abun ciki na baƙar fata ya ɓullo, musamman wasu ƙananan rubutu, ɗan kuskure kaɗan na bugawa zai sa a fallasa farin gefen, kuma bambancin baƙar fata da fari yana da girma, wanda yake da sauƙin gani.

3. Baƙi mai launi huɗu

Wannan kuma shine mafi yawan matsalar. Kafin fitarwa, dole ne ku bincika ko rubutun baƙar fata a cikin fayil ɗin bugawa, musamman ƙaramin bugawa, yana kan farantin baƙar fata, kuma bai kamata ya bayyana akan sauran faranti masu launi uku ba. Idan ya bayyana, za a rage ingancin samfurin da aka buga. Lokacin da aka canza zane-zane na RGB zuwa zane-zanen CMYK, tabbas baƙar fata zai zama baƙar fata mai launi huɗu. Sai dai in ba a kayyade ba, dole ne a sarrafa shi kafin a fitar da fim ɗin.

4. Hoton yana cikin yanayin RGB

Lokacin fitar da hotuna a yanayin RGB, tsarin RIP gaba ɗaya yana canza su ta atomatik zuwa yanayin CMYK don fitarwa. Koyaya, ingancin launi zai ragu sosai, kuma samfurin da aka buga zai sami launi mai haske, ba mai haske ba, kuma tasirin yayi muni sosai. An fi canza hoton zuwa yanayin CMYK a cikin Photoshop. Idan rubutaccen rubutun ne, dole ne ya bi tsarin gyaran launi kafin a yi amfani da hoton.


Lokacin aikawa: Jul-01-2021