Introduction
CTP(Computer-to-Plate),alsoknownascomputer-to-plate.Thesystemdoesnotgothroughintermediateprocessessuchasmakingfilmsandprintingplates,anddirectlysendstheeditedandassembledlayoutinformationoftheprepressprocessingsystemtotheRIPofthecomputer,andthentheRIPsendstheelectronicfilestotheplatemakingmachine,inthephotosensitiveorthermalplateTheimageisformedonthematerial,andtheprintingplateisobtainedafterwashing.Thecomputer-to-platetechnologystartedunderthecoreofPostScripttechnologyinthe1970s.Theautomaticproductionofpre-press,whichstartedfromdot-spinningmachinesandimagesetters,wasdelayedonspecifichardware.The1980swastheresearchphaseofCTPtechnology.Inthe1990s,CTPhasreachedthelevelofmaturityandindustrialapplication.ThefirstCTPdevicecameoutin1989,andtheprototypewasexhibitedattheDrupaexhibitionin1990.Sinceitsinception,CTPhascompletelychangedthetraditionalprintingprocessbyvirtueofitsrevolutionarytechnology,andhasswepttheentireprintingindustrywithlightningspeed.