{"id":397,"date":"2013-03-19T01:03:23","date_gmt":"2013-03-19T00:03:23","guid":{"rendered":"http:\/\/www.proof.de\/?p=397"},"modified":"2020-04-20T14:17:40","modified_gmt":"2020-04-20T12:17:40","slug":"ka-precizi-var-izmerit","status":"publish","type":"post","link":"http:\/\/blog.proofs.de\/lv\/wie-genau-kann-druckfarbe-denn-gemessen-werden\/","title":{"rendered":"Cik prec\u012bzi var izm\u0113r\u012bt tinti?"},"content":{"rendered":"
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\n Nov\u0113rt\u0113jiet tagad<\/span>\n <\/div>\n <\/div>\n

Jau vair\u0101kus gadus drukas kr\u0101su m\u0113r\u012b\u0161anas iesp\u0113jas ir k\u013cuvu\u0161as vienk\u0101r\u0161\u0101kas un l\u0113t\u0101kas. T\u0101p\u0113c bie\u017ei tiek uzskat\u012bts, ka iespiedkr\u0101su m\u0113r\u012b\u0161ana ir vienk\u0101r\u0161a, l\u0113ta un, galvenais, \u013coti prec\u012bza. Un tas attiecas pat uz da\u017e\u0101du z\u012bmolu un paaud\u017eu m\u0113rier\u012bc\u0113m. Vai t\u0101 ir taisn\u012bba?<\/strong><\/p>\n

Apskatot da\u017eus p\u0113t\u012bjumus, \u0161\u0137iet, ka tas ne vienm\u0113r t\u0101 ir. Piem\u0113ram, IFRA pieprasa, lai, m\u0113rot BCRA keramikas fl\u012bzes, kr\u0101su at\u0161\u0137ir\u012bbas starp da\u017e\u0101d\u0101m m\u0113rier\u012bc\u0113m, kas ir zem\u0101kas par 1,5 %, b\u016btu maz\u0101kas par 1,5 %. Delta-E<\/a> 0,3 j\u0101b\u016bt. Tom\u0113r realit\u0101t\u0113 viss izskat\u012bj\u0101s cit\u0101di. Nussbauma p\u0113t\u012bjum\u0101 8 no 9 m\u0113r\u012bjumiem Delta-E bija liel\u0101ka par 2,0; Wyble & Rich p\u0113t\u012bjum\u0101 novirzes bija no Delta-E 0,76 l\u012bdz 1,68. Bet k\u0101p\u0113c novirzes ir tik lielas?<\/p>\n

No vienas puses, m\u0113rinstrumenti at\u0161\u0137iras ar to, k\u0101 tie izgaismo m\u0113r\u0101m\u0101s virsmas. Tas ir svar\u012bgi divos aspektos: no vienas puses, atkar\u012bb\u0101 no materi\u0101la m\u0113r\u012bjumi var iev\u0113rojami at\u0161\u0137irties, ja, piem\u0113ram, gaisma uz m\u0113r\u0101m\u0101s virsmas tiek izstarota tikai no viena gaismas avota un tiek m\u0113r\u012bta. Ja, piem\u0113ram, m\u0113rier\u012bcei ir tikai viena lampa, kas uz m\u0113r\u0101m\u0101s virsmas sp\u012bd 45 gr\u0101du le\u0146\u0137\u012b, un tiek m\u0113r\u012bts t\u0101s atsp\u012bdums, tad m\u0113r\u012bjums var at\u0161\u0137irties l\u012bdz pat Delta-E 3,0, ja m\u0113rier\u012bci pagrie\u017e tikai ap savu asi. Ja ar vienu un to pa\u0161u m\u0113rier\u012bci vienu un to pa\u0161u pl\u0101ksni m\u0113ra kreis\u0101s un lab\u0101s rokas cilv\u0113ks, tad m\u0113r\u012bjums var b\u016bt piln\u012bgi at\u0161\u0137ir\u012bgs tikai t\u0101p\u0113c, ka m\u0113rier\u012bce tiek tur\u0113ta at\u0161\u0137ir\u012bg\u0101 veid\u0101 un pl\u0101ksnes tiek izgaismotas at\u0161\u0137ir\u012bg\u0101 le\u0146\u0137\u012b.<\/p>\n

Risin\u0101jums: Risin\u0101jums: m\u0113rier\u012bc\u0113 ir izvietoti vair\u0101ki gaismas avoti vai, lab\u0101kaj\u0101 gad\u012bjum\u0101, apgaismojums tiek izstarots tie\u0161i pa apli 45 gr\u0101du le\u0146\u0137\u012b, lai l\u012bdz minimumam samazin\u0101tu \u0161\u0101du ietekmi.<\/p>\n

Apgaismot\u0101ji<\/strong><\/p>\n

Ta\u010du liela noz\u012bme ir ar\u012b apgaismojuma veidam. Agr\u0101k apgaismojumam p\u0101rsvar\u0101 tika izmantotas volframa lampas, kas, lai gan bija labs apgaismojuma veids, tom\u0113r Spektrs<\/a> Tom\u0113r to spektrs lampas darb\u012bbas laik\u0101 iev\u0113rojami main\u012bj\u0101s, jo \u012bpa\u0161i UV diapazon\u0101, un t\u0101p\u0113c m\u0113r\u012bjumi var\u0113ja b\u016bt nepareizi. Turkl\u0101t past\u0101v ar\u012b probl\u0113ma, ka svaigai izdrukai no iespiedma\u0161\u012bnas ar v\u0113l mitr\u0101m kr\u0101s\u0101m ir iev\u0113rojami augst\u0101ks kr\u0101su spektrs. Glam\u016brs<\/a>- un atstaro\u0161anas faktors, t. i., tas pats izdruka, kad to p\u0113c ned\u0113\u013cas pieg\u0101d\u0101 klientam. \u0160\u012bs sp\u012bduma at\u0161\u0137ir\u012bbas l\u012bdz \u0161im iesp\u0113ju robe\u017e\u0101s ir nov\u0113rstas, izmantojot polariz\u0101cijas filtrus.<\/p>\n

T\u0101 k\u0101 jaunais D50<\/a> Apgaismojuma standarts ISO 13655:2009 paredz apgaismojumu ar D50 neona lamp\u0101m, ta\u010du t\u0101s nav \u012bsti piem\u0113rotas paroc\u012bg\u0101m m\u0113rier\u012bc\u0113m. T\u0101p\u0113c da\u017e\u0101di apgaismojuma apst\u0101k\u013ci defi<\/a>nised: M0, M1, M2 un M3.<\/p>\n

M0 ir tradicion\u0101lais volframa apgaismojums k\u0101, piem\u0113ram, I1 Pro vai DTP 41 vai DTP 70 bez UV filtra un bez polariz\u0101cijas filtra.<\/p>\n

M2 apraksta to pa\u0161u, bet ar UV-Cut filtru, kas izmantots, piem\u0113ram, I1 Pro UV-Cut. UV filtra priek\u0161roc\u012bbas: harmoniski rezult\u0101ti pat ar pap\u012briem ar optisku Izgaismot\u0101js<\/a>. Tr\u016bkums: Tipiski ra\u017eo\u0161anas dokumenti \u0161odien da\u017ek\u0101rt satur daudz optiskie balin\u0101t\u0101ji<\/a>kas padara pap\u012bru balt\u0101ku, absorb\u0113jot UV gaismu un atstarojot to k\u0101 zilu gaismu. T\u0101d\u0113j\u0101di pap\u012brs var izskat\u012bties piln\u012bgi vien\u0101ds, ja tas tiek griezts UV gaism\u0101, bet \u013coti at\u0161\u0137ir\u012bgs dienas gaism\u0101 vai pie D50. Praks\u0113 druk\u0101tos produktus gandr\u012bz nekad neapskata UV griezuma apst\u0101k\u013cos.<\/p>\n

M3 m\u0113r\u012bt\u0101jiem ir gan UV filtrs, gan polariz\u0101cijas filtrs.<\/p>\n

M1: M1 re\u017e\u012bmu nodro\u0161ina, izmantojot D50 gaismas avotu saska\u0146\u0101 ar specifik\u0101cij\u0101m. ISO 3664:2009<\/a> tiek izmantots. T\u0101 k\u0101 m\u0113rier\u012bces, ko izmanto LED<\/a>s v\u0113l nesp\u0113j visaptvero\u0161i atveidot D50 spektru, un neona lampas ir vienk\u0101r\u0161i p\u0101r\u0101k lielas, da\u017ei m\u0113rier\u012b\u010du ra\u017eot\u0101ji izmanto triku, lai sev pal\u012bdz\u0113tu: no vienas puses, tie izstaro D50 gaismu bez UV komponentiem, lai pan\u0101ktu p\u0113c iesp\u0113jas harmonisk\u0101ku m\u0113r\u012bjumu. No otras puses, tie izstaro tikai UV gaismu, lai m\u0113r\u012btu optisko balin\u0101t\u0101ju iedarb\u012bbu. T\u0101 k\u0101 pa\u0161laik neviena LED nesp\u0113j izstarot t\u012bru UV gaismu, bet pap\u012bru joproj\u0101m izstaro apk\u0101rt\u0113j\u0101 gaisma, kas rezult\u0101tu falsific\u0113tu, da\u017ei izmanto triku: tie liel\u0101 \u0101trum\u0101 kvazi mirgojo\u0161\u0101 veid\u0101 m\u0113ra UV griezumu un slikto UV variantu un apr\u0113\u0137ina rezult\u0101tu, kas atbilstu izgaismo\u0161anai ar D50 gaismu.<\/p>\n

Secin\u0101jums:<\/strong> M\u0113r\u012bjumi ar da\u017e\u0101diem m\u0113rinstrumentiem pa\u0161laik joproj\u0101m ir \u013coti neuzticami un neatbilst nepiecie\u0161amaj\u0101m zemaj\u0101m pielaid\u0113m, jo gr\u016bt\u012bbas rada sp\u012bdums, UV komponenti un apgaismot\u0101ju spektr\u0101l\u0101s nepiln\u012bbas un de\u0123ener\u0101cija. Tom\u0113r ir daudzsolo\u0161as pieejas, lai var\u0113tu kompens\u0113t \u0161\u012bs gr\u016bt\u012bbas, ja ne pat nov\u0113rst t\u0101s turpm\u0101kaj\u0101s m\u0113rinstrumentu paaudz\u0113s.<\/p>\n

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Jau vair\u0101kus gadus iespiedkr\u0101su kr\u0101su m\u0113r\u012b\u0161anas iesp\u0113jas ir k\u013cuvu\u0161as arvien vienk\u0101r\u0161\u0101kas un l\u0113t\u0101kas. T\u0101p\u0113c bie\u017ei tiek uzskat\u012bts, ka iespiedkr\u0101su m\u0113r\u012b\u0161ana ir vienk\u0101r\u0161a, l\u0113ta un, galvenais, \u013coti prec\u012bza. Un t\u0101 tas ir taisn\u012bba attiec\u012bb\u0101 uz da\u017e\u0101du z\u012bmolu un paaud\u017eu m\u0113rier\u012bc\u0113m. Vai t\u0101 ir taisn\u012bba? Ja apl\u016bkojat da\u017eus p\u0113t\u012bjumus, \u0161\u0137iet, ka tas ne vienm\u0113r t\u0101 ir. Piem\u0113ram, IFRA apgalvo, ka, m\u0113rot BCRA keramikas fl\u012bzes, kr\u0101su at\u0161\u0137ir\u012bb\u0101m starp da\u017e\u0101d\u0101m m\u0113rier\u012bc\u0113m j\u0101b\u016bt maz\u0101k\u0101m par 0,3 delta-E. Paties\u012bb\u0101 ... <\/p>\n

Las\u012bt vair\u0101k<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1,443,25,437,7],"tags":[77,533,78,80,536],"class_list":["post-397","post","type-post","status-publish","format-standard","hentry","category-allgemein","category-haeufige-fragen-zu-proofs","category-licht-und-normlicht","category-proof-software-und-technik","category-proof-wissen","tag-colorimetrik","tag-d50","tag-farbcolorimeter","tag-farbmessgerate","tag-iso-36642009","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t