{"id":1108,"date":"2014-10-02T00:36:12","date_gmt":"2014-10-01T22:36:12","guid":{"rendered":"http:\/\/www.proof.de\/?post_type=encyclopedia&p=1108"},"modified":"2025-02-20T12:06:02","modified_gmt":"2025-02-20T11:06:02","slug":"ctf","status":"publish","type":"encyclopedia","link":"https:\/\/blog.proofs.de\/cs\/lexikon\/ctf\/","title":{"rendered":"CTF"},"content":{"rendered":"
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P\u0159evod po\u010d\u00edta\u010de na film (CTF)<\/strong> je p\u0159edtiskov\u00e1 p\u0159\u00edprava, p\u0159i n\u00ed\u017e se digit\u00e1ln\u00ed tiskov\u00e1 data p\u0159en\u00e1\u0161ej\u00ed na filmov\u00e9 \u0161ablony, kter\u00e9 se n\u00e1sledn\u011b pou\u017e\u00edvaj\u00ed k v\u00fdrob\u011b. Tlakov\u00e1 deska<\/a>n lze pou\u017e\u00edt. Po dlouhou dobu byl CTF standardn\u00edm postupem v oblasti Ofsetov\u00fd tisk<\/a>ne\u017e byl nahrazen technologi\u00ed Computer to Plate (CTP<\/a>) byl z velk\u00e9 \u010d\u00e1sti nahrazen. Navzdory rostouc\u00ed digitalizaci tiskov\u00fdch technologi\u00ed se CTF st\u00e1le pou\u017e\u00edv\u00e1 v n\u011bkter\u00fdch aplikac\u00edch a pro speci\u00e1ln\u00ed tiskov\u00e9 \u00falohy.<\/p>\n

V procesu CTF jsou digit\u00e1ln\u00ed tiskov\u00e1 data exponov\u00e1na po\u010d\u00edta\u010dem p\u0159\u00edmo na film, kter\u00fd pak slou\u017e\u00ed jako \u0161ablona pro v\u00fdrobu tiskov\u00fdch desek. Zvl\u00e1\u0161tnost\u00ed procesu CTF je, \u017ee jako m\u00e9dium pro osvit se pou\u017e\u00edv\u00e1 film, \u010d\u00edm\u017e se li\u0161\u00ed od p\u0159\u00edm\u00e9ho p\u0159enosu na tiskovou desku (CTP). Obvykle se film exponuje pomoc\u00ed laseru, \u010d\u00edm\u017e se obraz p\u0159enese na sv\u011btlocitlivou vrstvu na filmu.<\/p>\n

V\u00fdhodou CTF bylo vysok\u00e9 rozli\u0161en\u00ed a p\u0159esnost detail\u016f p\u0159i p\u0159enosu obrazu. CTF dok\u00e1zal zajistit vynikaj\u00edc\u00ed kvalitu obrazu, zejm\u00e9na u slo\u017eit\u00fdch rozvr\u017een\u00ed, jemn\u00fdch detail\u016f a st\u00ednov\u00e1n\u00ed. Dal\u0161\u00ed v\u00fdhodou tohoto procesu je jeho flexibilita: filmov\u00e9 p\u0159edlohy lze pou\u017e\u00edt pro r\u016fzn\u00e9 tiskov\u00e9 procesy a form\u00e1ty, a\u0165 u\u017e jde o ofsetov\u00fd nebo s\u00edtotisk. Zat\u00edmco v ofsetov\u00e9m tisku byl CTF zcela nahrazen, v s\u00edtotisku se st\u00e1le pou\u017e\u00edv\u00e1.<\/p>\n

Vzhledem k mezikroku v\u00fdroby filmu je v\u0161ak CTF obecn\u011b \u010dasov\u011b i finan\u010dn\u011b n\u00e1ro\u010dn\u011bj\u0161\u00ed ne\u017e CTP. Film se mus\u00ed vyrobit, vyvolat a pot\u00e9 d\u00e1le zpracovat pro v\u00fdrobu desek, co\u017e zpomaluje cel\u00fd pracovn\u00ed postup a zp\u016fsobuje dal\u0161\u00ed n\u00e1klady na materi\u00e1l. Tyto nev\u00fdhody vedly k tomu, \u017ee CTF je st\u00e1le v\u00edce nahrazov\u00e1na p\u0159\u00edmo\u010da\u0159ej\u0161\u00ed, \u00fa\u010dinn\u011bj\u0161\u00ed a n\u00e1kladov\u011b efektivn\u011bj\u0161\u00ed technologi\u00ed CTP.<\/p>\n

Dnes se filmy \u010dasto tisknou tak\u00e9 na pr\u016fhledn\u00e9 f\u00f3lie pomoc\u00ed plotr\u016f. Ty maj\u00ed sice ni\u017e\u0161\u00ed hustotu a v\u00fdrazn\u011b vy\u0161\u0161\u00ed odchylku horizont\u00e1ln\u00ed a vertik\u00e1ln\u00ed p\u0159esnosti, jsou v\u0161ak mnohem levn\u011bj\u0161\u00ed a lze je vyr\u00e1b\u011bt bez pou\u017eit\u00ed chemick\u00fdch l\u00e1tek nebo technologie osvit\u016f.<\/p>\n

Velmi dobr\u00fdm poskytovatelem slu\u017eeb pro klasick\u00e9 filmy je Helmut Kopp<\/a> s Filmexposure24.de<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Proces CTF je proces \"computer-to-film\", p\u0159i kter\u00e9m se tiskov\u00e9 desky neexponuj\u00ed p\u0159\u00edmo, ale nejprve se exponuje ofsetov\u00fd film jako meziprodukt, kter\u00fd pak exponuje kone\u010dnou tiskovou desku.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-1108","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\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\n\t\t