amakuru

Iriburiro:

Mumabara menshi ya offset yo gucapa, gucapa ibara ubuziranenge biterwa nibintu byinshi bigenzura, kimwe muricyo cyo gucapa amabara akurikirana.Kubwibyo, ni ngombwa cyane guhitamo ibara ryukuri ryukuri ryo gucapa ibara ryiza.Gutondekanya neza kurutonde rwamabara bizatuma ibara ryibintu byacapwe byegerejwe nintoki zumwimerere.Uru rupapuro rusobanura muri make ingaruka zo gucapa amabara akurikirana kurwego rwibara ryibintu byacapwe. Kubisobanuro byawe gusa:

Gucapa amabara akurikirana

Gucapa amabara akurikirana bivuga gahunda yo gucapa monochrome mugucapa amabara menshi.Kurugero, icapiro ryamabara ane cyangwa icapiro ryamabara abiri bigira ingaruka kumurongo ukurikirana.Muri rusange, ni ugukoresha amabara atandukanye akurikirana mugucapura, ibisubizo byo gucapa biratandukanye, rimwe na rimwe gucapa ibara ryerekana ibara ryerekana ubwiza bwibintu byacapwe cyangwa sibyo.

01 Isano iri hagati yo gucapa no gukurikiranya amabara Ibara ryibara ryimashini rigomba kwitabwaho muguhitamo icapiro ryamabara.Imashini zitandukanye zo gucapa zigomba gukoreshwa mugucapisha amabara atandukanye bitewe nuburyo butandukanye bwo gukora.

Imashini ya Monochrome

Imashini ya Monochrome ni iyikanda ryumye.Urupapuro hagati yo gucapa ibara rworoshe kwagurwa no guhindurwa, bityo rusange muri rusange icapiro ryukuri kubijyanye nibisabwa birenze urugero byumuhondo numukara, kugeza impapuro zikunda guhagarara hanyuma zigacapura ibara kugirango icapwe.Iyo ibara ryambere ryo gucapa ryumye, ingano yo kohereza irangi iri hejuru ya 80%.Kugirango ugabanye itandukaniro ryamabara murwego rwo hejuru, shiraho ibara ryingenzi mumashusho, ugomba kubanza gucapa amajwi nyamukuru.

Imashini y'amabara abiri

Amabara ya 1-2 na 3-4 yimashini yamabara abiri ni ayimyanda itose yumye, mugihe amabara ya kabiri nagatatu ari ayimyanda yumye.Urukurikirane rw'amabara akurikira rusanzwe rukoreshwa mugucapa: 1-2 amabara yo gucapa magenta - cyan cyangwa cyan - magenta;3-4 ibara ryandika umukara-umuhondo cyangwa umuhondo-umukara.

Imashini y'amabara menshi

Imashini y'amabara menshi yo gukanda imashini itose, bisaba ko buri wino igomba kuba ifite ukuri mugucapisha ako kanya, no murwego rwo hejuru rwa wino, ntishobora kuba iyindi wino iva hejuru yicapiro "ikureho".Mu icapiro nyirizina, irangi rya mbere ryamabara mugucapisha ibara rya kabiri, ibara rya gatatu n ibara rya kane, naryo, igice cya wino gifatanye nigitambaro, kuburyo igitambaro cya kane cyamabara bigaragara ko ari bine- ibara.Irangi ryamabara ya 3 rifatwa gake, gusa irangi rya 4 ryamabara ryagumishijwe 100%.

02 Isano iri hagati yimiterere ya wino hamwe nurutonde rwamabara

Ibiranga inkingi hamwe nurutonde rwamabara

Muguhitamo amabara akurikirana (cyane cyane gucapa amabara menshi), kugirango harebwe ibiranga wino: ibara rya wino, ubunini bwa firime ya wino, gukorera mu mucyo, gukama, nibindi.

Viscosity

Ink viscosity ifite uruhare rugaragara mugucapa cyane.Muguhitamo bigomba kuba bike, viscosity ya wino nini imbere.Niba hatabayeho gutekereza ku irangi rya wino bizabaho "revers overprint" phenomenon, bizaganisha kumabara wino, bikavamo ishusho itagaragara, ibara ryijimye, ibura.

Ubusanzwe ubunini bwamabara ane yijimye ni umukara> icyatsi> magenta> umuhondo, bityo imashini rusange yamabara ane ikoresha cyane "umukara cyan - magenta - umuhondo" icapiro ryamabara, kugirango byongere umuvuduko wo gucapa.

Ubunini bwa firime

Ubunini bwa firime ya wino nicyo kintu cyingenzi kugirango ugere ku kugabanuka kwiza kurwego rwo gucapa.Filime yino iroroshye cyane, wino ntishobora gupfuka impapuro, gucapisha ecran ya ecran, ibara rikunda kuba rito, fuzzy;Filime yino irabyimbye cyane, byoroshye gutera mesh point kwiyongera, paste verisiyo, layer depressing.

Muri rusange, guhitamo kongera ubunini bwa firime ya wino yerekana amabara akurikirana, aribyo "umukara - icyatsi - magenta - umuhondo" kugirango icapwe, ingaruka zo gucapa nibyiza.

Gukorera mu mucyo

Gukorera mu mucyo biterwa no gutandukanya indangantego ya pigment na binders.Diaphaneity ya wino nyuma yo gucapisha ibara ryinshi ni byinshi, kuko nyuma yo gucapa amabara hejuru birenze ntibyoroshye kwerekana ibara ryukuri;Irangi ryinshi rifite irangi ryinshi - irangi ryamabara, ubanza gucapa wino ibara ryumucyo unyuze nyuma wino yo gucapa, bigera kumurongo mwiza wo kuvanga amabara.Kubwibyo, kutagaragara neza kwa wino ubanza, gukorera hejuru ya wino nyuma yo gucapa.

Kuma

Uhereye kuri wino yumisha kugirango ubitekerezeho, kugirango ukore irangi rya wino ibara ryiza, urabagirana neza neza icapiro, irashobora gucapa wino yumye yo gucapa buhoro, gucapa wino yumye nyuma.

03 Isano iri hagati yimpapuro nimpapuro zikurikirana

Impapuro zirahindura muburyo butaziguye ubuziranenge bwibintu byacapwe.Mbere yo gucapa, impapuro zerekana cyane cyane ubworoherane, gukomera, guhindura ibintu, nibindi.

Ubworoherane

Ubworoherane bwimpapuro, icapiro rirahuza cyane nigitambaro, birashobora gucapishwa ibara rimwe, ishusho isobanutse yibicuruzwa.Kandi ubworoherane buke bwimpapuro, gucapa bitewe nubuso butaringaniye bwimpapuro, ihererekanyabubasha bizagira ingaruka, bikavamo gucapa inkono ya firime, ishusho yumurima igice cya wino cyaragabanutse.Kubwibyo, iyo ubworoherane bwimpapuro buri hasi, pigment granule coarse wino kumabara yambere.

Gukomera

Gukomera kw'impapuro no koroshya impapuro bifitanye isano ya hafi.Muri rusange, ubworoherane bwimpapuro hamwe no kwiyongera kwimpapuro no gutera imbere.Gukomera cyane, ubworoherane bwimpapuro mbere yo gucapa ibara ryijimye, nyuma yo gucapa ibara ryoroshye;Ibinyuranye, icapiro ryambere ryoroheje (umuhondo), nyuma yibara ryijimye, ibi biterwa ahanini na wino yumuhondo irashobora gupfuka ubwoya bwimpapuro nifu nizindi nenge.

Guhindura

Mugihe cyo gucapa, impapuro zizahindurwa kandi zongerwe kurwego runaka binyuze mukuzunguruka hamwe ningaruka zo gukoresha amazi, byanze bikunze bigira ingaruka kumyandikire.Kubwibyo, ugomba kubanza gucapa agace ka verisiyo ntoya yamabara cyangwa verisiyo yijimye, hanyuma ugacapura agace ka verisiyo nini yamabara cyangwa ibara ryoroshye.

04 Ibara ryihariye ryurukurikirane rwibicapo bidasanzwe

Mu gucapa no kubyara ibikorwa byihariye byumwimerere, gucapa amabara bikurikirana bigira uruhare ruto cyane, bidashobora gusa gukora imirimo yo gucapa hafi cyangwa kugarura umwimerere, ariko kandi ikanabyara ubwiza bwubuhanzi bwumwimerere.

Ibara ry'umwimerere

Inyandiko yumwimerere niyo shingiro ryogukora platem no gucapa.Ibara rusange ryandikishijwe intoki rifite amajwi nyamukuru na sub-tone.Mu mabara nyamukuru, hari amabara meza (icyatsi, ubururu, umutuku, nibindi) n'amabara ashyushye (umuhondo, orange, umutuku, nibindi).Muguhitamo ibara ryurutonde, bigomba gukurikiza ihame ryibanze nayisumbuye.Kubwibyo, muburyo bukurikirana amabara, hamwe namabara ashyushye cyane cyane yacapishijwe umukara, icyatsi, umutuku, umuhondo;Gukonjesha ibara - rishingiye gucapa umutuku, nyuma yo gucapa icyatsi.Niba amajwi nyamukuru yo gushushanya ibishushanyo ari ibara ryiza, urutonde rwamabara rugomba gushyirwa kumasahani yicyatsi nyuma cyangwa icapiro rya nyuma;Kandi ijwi nyamukuru ryibishushanyo bishushanya ibara rishyushye, kuri magenta, bigomba gushyirwa muri verisiyo ya magenta nyuma cyangwa icapiro ryanyuma, kugirango ijwi nyamukuru rishobora kuba hafi yishusho ryerekana insanganyamatsiko.Na none, ijwi nyamukuru ryibishushanyo gakondo byabashinwa kugeza umukara, umukara bigomba gushyirwa nyuma cyangwa gucapwa nyuma.