Ushicilelo lwe-Offset, nokwaziwa njengei-offset lithography, yenye yezona ndlela zisetyenziswa kakhulu kurhwebo loshicilelo lobuchule kwihlabathi jikelele, elixatyiswe umgangatho walo ophezulu, ukungaguquguquki, kunye neendleko-ukusebenza ngempumelelo yoshicilelo olukhulu.
1. UMGaqo wokuSebenza onguNdoqo
Ushicilelo lwe-Offset lusekwe kwiukunyanyiswa phakathi kweoli kunye namanzi. Indlela engundoqo ibandakanya ukwahlula umfanekiso kunye{1}}neendawo ezingezizo umfanekiso kwipleyiti yoshicilelo:
Iindawo zemifanekiso: Hydrophobic (ioyile{0}}enomtsalane) kunye ne-inki{1}}yamkelekile. Zenziwe ngokukhanya{3}}kwepolima ebuthathaka enamathela kwi-inki.
Indawo ezingezizo{0}}zemifanekiso: Hydrophilic (amanzi-anomtsalane) kunye ne-inki{1}}egxothayo. Baphathwa ukuze bagcine ifilimu encinci yesisombululo somswakama.
Inkqubo idlulisela i-inki ngendlela engathanga ngqo:
Ipleyiti yoshicilelo iqatywe ngesisombululo esimanzi kuqala, esincamathela kuphela kwindawo -engeyiyo imifanekiso.
I-inki isetyenziswe kwipleyiti; ibambelela ngokukodwa kwiindawo zemifanekiso (ekubeni amanzi egxotha i-inki).
Umfanekiso obhalwe inki ukhutshelwa (i-offset) ukusuka kwipleyiti ukuya kwingubo yerabha{0}}ethambileyo, ebhetyebhetye isilinda.
Ingubo yerabha icinezela kwi-substrate (iphepha, ikhadibhodi, njl.), Ukudlulisela umfanekiso kwizinto eziphathekayo.
Olu tshintshelo lungathanga ngqo kungenxa yoko lubizwa ngokuba "yi-offset"-i-inki ayiqhagamshelani ne-substrate ngokuthe ngqo kwipleyiti, ekhusela ipleyiti kwaye iqinisekisa umfanekiso ocacileyo, ococekileyo.
2. Inkqubo yeMveliso ePhambili
Ukuhamba koshicilelo olupheleleyo lwe-offset kubandakanya izigaba ezi-5 eziphambili:
(1) Cofa Ukulungiselela Kwangaphambili
Eli linyathelo elisisiseko lokuqinisekisa ukuchaneka koshicilelo:
Uyilo lwefayile & ukufomatha: Yenza ushicilelo{0}}iifayile ezilungile usebenzisa isoftware efana neAdobe Illustrator okanye iInDesign. Iimfuno eziphambili ziquka ukucwangcisa imo yombala echanekileyo (CMYK, hayi iRGB-kubalulekile ukuchaneka kombala), ukongeza ukopha (ngokuqhelekileyo yi-3mm) ukunqanda imida emhlophe, kunye nokubethelela zonke iifonti kunye nemifanekiso.
Ukwenza ipleyiti: Ushicilelo{0}}ifayile elungile iphuma kwipleyiti yedijithali ngeCTP (IKhompyutha{0}}ukuya{1}}kwiPlate)umatshini. I-CTP ithatha indawo yomboniso bhanyabhanya wesintu{1}osekelwe ekwenzeni iipleyiti, uphuculo lobuchule kunye nokunciphisa iimpazamo. Ipleyiti ke ixhonywe kwicylinder yokushicilela.
(2) Cinezela ukuseta
Ilayisha izixhobo: Faka iipleyiti zokushicilela, ulayishe i-substrate (iphepha, ikhadibhodi, i-vinyl, njl.), kwaye ugcwalise i-inki kunye ne-dampening solution tanks.
Ulungelelwaniso lombala kunye nobhaliso: Lungisa ushicilelo ukuze ulungelelanise iipleyiti ezine zemibala ye-CMYK ngokuchanekileyo (ubhaliso) ukunqanda ukufiphala. Qhuba ushicilelo lovavanyo ukulungisa{1}}coca ukuxinana kombala, uqinisekise ukuba iziphumo zihambelana nobungqina.
(3) Ukushicilela
Umshicileli uqhuba ngokuqhubekayo, kunye nengubo yerabha ehambisa umfanekiso kwi-substrate. Abasebenzisi bajonga inkqubo yokugcina umbala kunye nomgangatho ongaguqukiyo, bejonga iziphene ezifana ne-smudges, ukubhaliswa kakubi, okanye amabala e-inki.
(4) Posa{1}cofa ukugqiba
Eli nqanaba longeza ixabiso kunye nokusebenza kwiimveliso eziprintiweyo:
Iinkqubo ezisisiseko: Ukusika, ukucheba, ukusonga, kunye nokubopha (ukudibanisa, ukubopha ngokugqibeleleyo, ukuthunga isali).
Ixabiso -iinkqubo ezongeziweyo: Ukwanyisa (iglosi okanye i-matte ukukhusela umphezulu), i-embossing / i-debossing (ukudala iipateni eziphakanyisiweyo okanye ezihlaziyiweyo), i-foil stamping (ukongeza i-accents yentsimbi), kunye nokufa{1}}ukusika (ukubumba imveliso kwiifom zesiqhelo).
(5) Ukuhlolwa koMgangatho kunye nokuPakisha
Jonga iimveliso ezigqityiweyo ukuchaneka kombala, iziphene zokuprinta, kunye nokuhambelana komda. Iimveliso ezifanelekileyo zipakishwe ukuhanjiswa.