Gucapa plaque y'umuringa na offset printing ni uburyo bubiri butandukanye bukoreshwa mu nganda zicapa. Nubwo ubwo buryo bwombi bufite intego yo gushushanya amashusho ku buso butandukanye, butandukanye mu bijyanye n'imikorere, ibikoresho byakoreshejwe, n'umusaruro wa nyuma. Gusobanukirwa itandukaniro riri hagati y'ubu buryo bwombi bishobora kugufasha gufata icyemezo cyumvikana ku buryo bujyanye n'ibyo ukeneye.
Gucapa icyuma gikozwe mu muringa, bizwi kandi nka intaglio printing cyangwa ecran, ni uburyo gakondo bumaze ibinyejana byinshi bukoreshwa. Bukubiyemo gushushanya ishusho ku gishushanyo cy'umuringa hakoreshejwe intoki cyangwa hakoreshejwe ikoranabuhanga rigezweho. Hanyuma icyuma gikozwe mu muringa gishyirwamo wino, hanyuma wino irenzeho igahanagurwa, bigasigara mu duce twaciwemo uduce. Igishushanyo gishyirwa ku rupapuro rwatose, hanyuma ishusho ishyirwa kuri rwo, bigatuma haboneka inyandiko nziza kandi irambuye. Ubu buryo bufatwa cyane kubera ubushobozi bwabwo bwo gukora inyandiko zimbitse, zifite imiterere, kandi zikozwe mu bugeni.
Ku rundi ruhande, gucapa ku buryo bwa offset ni uburyo bugezweho kandi bukoreshwa cyane. Bukubiyemo kwimura ishusho iva ku isahani y'icyuma ikayishyira ku gitambaro cya rubber, hanyuma ikajya ku bikoresho byifuzwa, nk'impapuro cyangwa ikarito. Ishusho ibanza gushirwa ku isahani y'icyuma hakoreshejwe uburyo bwa fotochemical cyangwa sisitemu ya mudasobwa ijya ku yindi. Hanyuma isahani irashyirwamo irangi, hanyuma ishusho ikajya ku gitambaro cya rubber. Amaherezo, ishusho ishyirwa ku gitambaro, bigatuma icapwa rirambuye kandi neza. Icapwa rya offset rizwiho ubushobozi bwo gukora inyandiko nyinshi vuba kandi ku giciro gito.
Itandukaniro rikomeye riri hagati yo gucapa plaque y'umuringa n'icapiro rya offset riri mu bikoresho bikoreshwa. Gucapa plaque y'umuringa bisaba gukoresha plaque z'umuringa, zishushanyijeho kandi zigashushanywa n'intoki. Ubu buryo busaba igihe, ubuhanga n'ubuhanga. Ku rundi ruhande, gucapa offset bishingiye ku plaque z'icyuma, zishobora gukorwa hakoreshejwe ikoranabuhanga rigezweho n'imikorere yikora. Ibi bituma gucapa offset biba amahitamo yoroshye kandi ahendutse yo gukora ku bwinshi.
Irindi tandukaniro rikomeye ni ubwoko bw'ishusho buri buryo butanga. Gucapa ibyuma bikozwe mu muringa birahebuje mu gukora amashusho akomeye kandi y'ubugeni afite agaciro gakomeye k'amajwi n'imiterere yimbitse. Akenshi bikundwa cyane mu bitabo byo mu rwego rwo hejuru, ibihangano bigezweho, n'ibicapo bike. Ku rundi ruhande, gucapa bya offset bitanga amashusho nyayo, meza kandi ahoraho akwiriye gucapa mu bucuruzi, nk'udutabo, amaposita n'ibinyamakuru.
Ku bijyanye n'ikiguzi, gucapa amasahani ya rubber bishobora kuzigama ikiguzi, ibi bikaba bikwiye umubare muto n'ibisabwa byo gucapa bike; Igiciro cyo gucapa amasahani y'umuringa ni kinini, ariko ingaruka zo gucapa ni nziza cyane, kandi birakwiriye ibikenewe mu gucapa amabara n'imiterere.
Mu gusoza, gucapa amasahani y'umuringa no gucapa amasahani ya offset ni uburyo bubiri butandukanye bukoreshwa mu nganda z'icapiro, buri bumwe bufite akamaro kabwo. Gucapa amasahani y'umuringa birubahwa kubera ubuhanga bwabyo n'ubushobozi bwo gukora amasahani arambuye kandi afite imiterere. Ku rundi ruhande, gucapa amasahani ya offset bitanga amasahani yihuse, ahendutse kandi meza akwiriye gukorwa ku bwinshi. Umaze gusobanukirwa itandukaniro riri hagati y'ubu buryo, ushobora gufata icyemezo cyumvikana ku bijyanye n'uburyo bujyanye n'ibyo ukeneye mu gucapa.
Igihe cyo kohereza ubutumwa: 16 Nzeri 2023
