Monochromeprinting
Single-colorprintingInaprintingprocess,onlyoneinkcolorisprintedonthesubstrate.
Monochromeprintingreferstotheuseofone-plateprinting,whichcanbeblackplateprinting,colorplateprinting,orspotcolorprinting.Spotcolorprintingreferstoaspecialcolorrequiredinaspecialmodulationdesignasthebasecolor,whichiscompletedbyone-pageprinting.Monochromeprintingiswidelyused,anditwillalsoproducerichtonestoachievesatisfactoryresults.Inmonochromeprinting,colorpapercanalsobeusedasthebackgroundcolor,andtheprintedeffectissimilartotwo-colorprinting,butithasaspecialcharm.SpecialcolorsSpecialcolorsincludeglossycolorprintingandfluorescentcolorprinting.
Glossycolorprintingmainlyreferstoprintinggoldorsilver.Specialcolorplatesarerequiredtobeprinted.Generally,goldinkorsilverinkisusedforprinting,orgoldpowder,silverpowder,glossoil,quick-dryingagent,etc.areusedforprinting.Undernormalcircumstances,itisbesttoprintgoldandsilverwiththebackgroundcolor.Thisisbecausethegoldinkorsilverinkisdirectlyprintedonthesurfaceofthepaper,whichwillaffectthelusterofthegoldandsilverinkduetothedegreeofoilabsorptiononthepapersurface.Generallyspeaking,acertaincolortonecanbeselectedaccordingtothedesignrequirements.Ifyourequireawarmgoldencolorandgloss,youcanchoosearedversionasthebasecolor;otherwise,youcanchooseblue;ifyouwanttobebothdeepandshiny,youcanchooseablackbase.Fluorescentcolorprintingreferstotheuseofspotcolorplatestoprintfluorescentcolorsandfluorescentinkprinting.Becauseofthedifferentnatureoftheinks,theprintedcolorsareextremelydazzlingandbeautiful.Usedindesignworks,itcanproducedistinctiveanduniqueeffects.
Printsaredividedintomonochromeprintingandcolorprinting.Monochromeprintingisaprintingmethodthatislimitedtoonecolor.Colorprintingcanprintfull-colorpictures.Colorprintingmostlyusescolorseparationplatestoreflectvarioushues,andthecolorseparationplatesaremostlycomposedoffour-colorscreenplatesofred(M),yellow(Y),blue(C)andblack(K).Thehueofthecolordraftofthecolorseparationplatecanbebasedonthecolorseparationprinciple,andthenumberofCMYKdotsinthecolorspectrumcanbedirectlymarkedwithtext.Whenspecialcolorsareneeded,specialcolorsotherthanthesefourcolorsmustbeusedtosetaspotcolorplate.Thecoloridentificationofthespotcolorplatecanspecifyacertainhueinthecolorspectrumforspecialdebugging.
Printingcolorrepresentationmethod
Inkprintingcolor,generallytherearetwomethods:
(1)Usefour-colorinkprintingcolor,mixingdotsandoverlappingprint.
(2)Mixprintinginkstoproducespotcolors,thatis,usespotcolorsforprinting,andusesolidcolorsordotstoexpresscolors.Thecolorspecificationandplatemakingmethodsofthesetwomethodsaredifferentintheprintingdesign.
1.GrayscaleofmonochromeprintingInmonochromeprinting,thedeepestsolidbackgroundis100%;whiteis0%,anddifferentshadesofgrayaremadebydifferentdots,thatis,percentagecontrolisused.Inordertomakeiteasiertoread,invertedwhitecharactersareusuallyusedindarkgraytonesrangingfrom50%to100%,andblackcharactersareusedbetween50%and0%,butitshouldalsobeconsideredaccordingtothedifferentcolors.
2.Four-colorlabelingforcolorprintingColorprintingistheuseofred,yellow,blue,andblackfour-colorprintingtoproduceever-changingcolors.Itcanusecolorseparationtomakeaplateprintingphotocolor.However,thecolorofthetextorgraphicsdesiredinthedesigncanbeusedtochecktheCMYKvalueofeachcolorbyusingthecolorcode.However,somespecialcolorssuchasgold,bankandfluorescentcolorscannotbecomposedoffour-colorinkoverprinting,andmustbeprintedwithspotcolorinks.
Colorplatechanges
Moderndesignneedsarediverseandfullofchanges.Ifyouwanttoexpressamoreperfectartisticconception,oramorespecialeffect,onlyrestoresomeoriginalimageColordoesnotmeettherequiredrequirements.Therefore,thecolorplatetechnologycanbeusedtochangeorchangetheorderandquantityofcolorplatestomeettherequirementsofspecialcolordesign.
1.Convertblackandwhitepositivefilmtotwocolors
Usingatwo-colorplate,itcanbeprintedtwicebyasingle-colorprintingmachine,oracolor-changingprintingmachinecanbecompletedatonetime.Two-colorprintingusuallyusesasingle-colorblackplate,andthentakesanothercolorasthecolorbaseofthecolorplatetocombineandprint.Inthecasethattheoriginalmanuscriptisnotverygood,thistwo-colorprintingmethodoftenproducesunexpectedresults.
2.ColorplatereplacementprintingColorplatereplacementprintingistochangeacertaincolorplateintheprintingdesign,resultinginachangeofthecolorplate.Thepurposeistopursueaspecialpictureeffect,whichcanoftenbringunexpectedeffects.Amongthefourcolorseparationplates,ifthetwoorthreecolorsareexchangedandprinted,thecolortoneoftheentireoriginalplatewillbechanged,causinggreatchanges.Forexample,thegreentreeiscomposedofyellow,blueandalittleblack;iftheyellowversionischangedtoredprinting,andtheblueversionremainsunchanged,thegreentreebecomespurple.SimilarpracticesareusedinsomeposterdesignsandOccasionallyusedinthelayoutdesign,youwillgetnoveleffects.
Theconversionofcolorpositivefilmtotwo-coloristoseparatetwoofthefourplates,andonlytwoplatesareprinted,thatis,two-colorprinting.Thethirdcolorcanbeproduced,suchasmixingblueandyellowtogetgreen,andtheshadeofgreeniscompletelydependentontheratioofdotsbetweenblueandyellow.Acolorpictureismodulatedwithanormalcolorandprintedwithtwocolorplatestoachieveaspecialcoloreffect.
Inthedesign,occasionallyusingthisprintingmethodwillproduceafreshfeeling.Whenappliedtotheperformanceoftheenvironment,atmosphere,timeandseasonofthescenery,itcanplayaspecialcreativeeffect.
Inordertofindaspecialtoneeffect,oneofthefour-colorprintingplatescanbeseparatedandthethree-colorprintingplatecanberetained.Inordertomakethepictureeffectclearandprominent,theheavieranddarkerversionofthethreecolorsisoftenusedasthemaincolor.Itisalsopossibletoprintoneofthethreeeditionsasaspotcolor.Forexample,makingtheblackplateintosilverorgoldwillproduceaspecialcolorcombination.Usingthetechniqueofcolorplatechange,itissuitablefortheprocessingofexaggeration,emphasisandspecialeffects.