PageDescriptionLanguages
PCLFontSupport
PCL5doesnotdirectlysupportTrueType,OpenTypeorType1fonts,nordoesitsupportlarge
charactersets.ItsupportstheISOLatin1andWinANSIcharactersets.TheISOLatin1characterset
issmallerthantheWinANSIcharacterset(anditdoesnotcontainallofthebulletcharacters).PCL
onlysupportsrotationsin90degreeincrements.
TrueTypefontscannotbeembeddedinPCLoutputdirectly.Rather,theymustfirstbeconvertedto
PCLsoftfontsandcopiedtothelocationidentifiedinthePCLFontPathcommandinDCPI.properties.
Inaddition,youneedtospecifythenewPCLsoftfontsinthePCLFontMappingcommandin
DCPI.properties.
ThePCLemitterassumesthatallPCLprinterscontainthefollowingresidentfonts:
• Arial
• ArialNarrow
• Helvetica
• HelveticaNarrow
• TimesNewRoman
• AvantGarde
• Bookman
• CenturySchoolbook
• Courier
• CourierNew
• Garamond
• NewCenturySchlbk
• Palantino
Touseotherfonts,theymustbeconvertedtoPCLformat.xPressionshipswiththeAutographFont
Converterthatcanbeusedtoperformthisconversion.
ImagesinPCL
SeethefollowingitemsaboutimagesupportforPCLoutput:
• ThexPressoforAdobeInDesignImageFitoptionsarenotsupportforxPressionwithAFP
orPCLoutput.
• PCL5doesnotsupportcolor(blackandwhiteonly),andonlysupportsblackandwhiteTIFF
images.TogetimagestooutputinPCL,youmuststartwithaG4Tiffimage.
• Toseeatabledescribingwhatimageformatisusedforfull-color,highlightcolor,andblackand
whiteimages,seeHowxPressionDecidesWhichFormattoUse,page36.
• ForimagetyperecommendationsforPCL,seeGeneralImageTypeRecommendationsforYour
PDL,page40.
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PageDescriptionLanguages
• ForalistofnativelysupportedimagetypesforPCL,seePDLNativeSupport,page28.
• TocustomizetheimageformatselectionforthisPDL,seeHowtoCustomizetheImageFormat
Selection,page37.
PCLPPDFiles
PrinterdefinitionsuseyourprintdevicePostScriptPrinterDescription(PPD)filetoidentifyallofthe
featuresandsettingssupportedbythedevice.Markersidentifyplacesinthedocumentwhereyou
wouldliketoimplementafeatureorsetoffeatures.
DocumentSciencessuppliesaPPDfileforPCLprinters,Pclbw.ppd.Itislocatedinthefollowing
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UsethisPPDfileforgeneralpurpose,blackandwhitePCLprinters.
PDF
ThePortableDocumentFormat(PDF)isafileformatcreatedbyAdobeSystemsfordocument
exchange. PDFisafixed-layoutformatusedforrepresentingtwo-dimensionaldocumentsina
mannerindependentoftheapplicationsoftware,hardware,andoperatingsystem. PDFcaptures
formattinginformationfromavarietyofdesktoppublishingapplications,makingitpossibleto
sendformatteddocumentsandhavethemappearontherecipient’smonitororprinterastheywere
intended.
Withversion4.5,xPressionintroducesanew,morerobustPDFemitter. ThePDFemitterused
inversion4.2isstillsupportedinxPression4.5,butwillnotbesupportedinthenextversionof
xPression.UsersshouldmigratetothenewPDFemitterandusetheoldPDFemittertocomparison
test.
Theoldemitterisnotenabledbydefault. Toenabletheoldemittertoworkalongsidethenew
emitter,updatetheEnableOldPDFEmitterpropertyinxPressionPublish.propertieslocatedinyour
x
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directory.WhenbothemittersareenabledinxAdmin,theoldemitterislabeled“4.2
PDF”andthenewemitterislabeled”PDF”.Youcanstilluseexisting“4.2PDF”OutputDefinitions
whentheoldemitterisdisabled,butyoucannotcreatenew“4.2PDF”OutputDefinitions.
SeethexAdminUserGuideformoreinformationaboutcreatingPDFoutput.
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PageDescriptionLanguages
UsingPDFinxPression
WhencreatingPDFoutputinxPression,youcannotusePrinterResidentImagesbecausetheformat
doesnotuseaphysicalprintertoproducetheoutput.However,youcanaddthefollowingproperties
toyourPDFoutput:
• Encryption-YoucanencryptyourPDFtoenableorprohibittherecipientofthePDFfrom
performingcertainfunctionswiththefile.
• DocumentProperties-suchasTitle,Author,Creationdate,andmore.
• ViewerPreferences-ControlthewaytheAcrobatviewerdisplaysthePDFfile.
• PDFbookmarks-ThePDFBookmarksfeatureisnotsupportedfordocumentsthatuseimposition.
• CompressFontsinthePDF-Thisoptioncompressesembeddedfonts. . Filesizeisreducedbut
processingtimeislonger.
Tolearnaboutthesefeatures,seethexAdminUserGuide.
Note:IfyouwanttocreatePDF/AoutputinxPressionandhavealargeamountofcustomerdatafor
yourdocument,selecttheIndividualprintfileforeachcustomeroptioninyouroutputdefinition;
otherwise,anout-of-memoryerrormightoccur.FormoreinformationabouttheIndividualprintfile
foreachcustomeroption,seexAdminUserGuide.
FontsinPDF
ThePDFformatprovidesdirectsupportforTrueType,OpenTypeandType1fonts. xPression
supportsrotationoftypeinanyincrement. ThePDFemitterwillembedfontsinTrueType,
OpenType,andType1formats.Theemitterwillalwaysembedsubsetsforfontstoreducefilesize.
IfyouuseType1fontswithPDF/AorPDF/Xoutput,thePDFwillbepublished,butyourPDFmay
failtopassaPDF/AorPDF/Xcompliancetest.
EmbeddingFontsinxPublish
Wehaveexpandedtherangeofcharactersthatcanbeusedwithoutbeingembeddedinanoutput
PDF.Originally,xPressionenabledyoutopublishaPDFwithoutembeddingfontsifallthecharacters
werewithintheASCIIrange(0-256). Anycharacterthatfelloutsideofthatrangewasembedded.
Nowthesupportedrangeisexpandedtocodepage1252.Ifthecharacterisoutsideofthisrange,it
willhavetobeembedded.
IfyouwanttopublishaPDFwithnoembeddedfonts,youmustdothefollowing
twosteps:
1. Ensurethatallcharactersfallwithinthesupportedrangeasoutlinedabove.
2. SetthefollowingtwoparametersintheDCPI.propertiesfile.
LargeCharacterSet=false
EmbedFont=false
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PageDescriptionLanguages
ImagesinPDF
PDFisviewedusingAdobeAcrobat.AcrobatisanRGBRIP.IttakesPDFfiles,whichareinametafile
format,rasterizesthemtoscreenresolutioninRGB,anddisplaysthemonyourmonitor. When
printingfromAcrobat,theprintdriverconvertsthePDFintoaPDLappropriateforyourprinter.
ToseeatabledescribingwhatimageformatisusedforPDFoutput,seeHowxPressionDecides
WhichFormattoUse,page36. ForimagetyperecommendationsforPDF,seeGeneralImageType
RecommendationsforYourPDL,page40. ForalistofnativelysupportedimagetypesforPDF,see
PDLNativeSupport,page28. TocustomizetheimageformatselectionforthisPDL,seeHowto
CustomizetheImageFormatSelection,page37.
ThePDFemitterdoesnotconvertyourimagestotherequiredcolorspaceforyourPDFtype.Ifyou
arepublishingPDF/AorPDF/X,ensurethatyoursourceimagematchesthecolorspacerequired
byyouroutputPDFtype.Forexample,ifyouarepublishinginPDF/A-1b,youshouldensureallof
yoursourceimagesuseCMYKinsteadofRGB.
ICCColorProfiles
ICCcolorprofilesembeddedinimagesaresupportedinPDFbutnotinotherstreams.ICCcolor
profilesarenothonoredwhenimagesareresampled.Forthisreason,donotuseResamplingwith
colormanagedimages.
ReversePrinting
WhencreatingPDFoutputyoucanusetheReversePrintingfeature.Whenthisfeatureisenabled,
theorderoftheprinteddocumentsintheoutputstreamwillbereversed.Forexample,insteadof
printingpages1,2,and3,itwillprintinreverseorder3,2,and1.
Formoreinformation,seethexAdminUserGuide.
RotatingPages180Degrees
WhencreatingPDFoutputyoucanusetheRotatePages180feature. Whenthisfeatureisenabled,
thepagesintheoutputstreamwillberotated180degrees.Formoreinformation,seethexAdmin
UserGuide.
PostScript
PostScriptwasdevelopedbyAdobeSystems. ItisaPDLoptimizedforprintingimagesandtext
documents. ForPostScriptoutputyoucanresampleimagestotheoutputresolution,usefonts
storedinyourprintermemory,anddefinethefollowingpropertiesforyouroutput:Title,Author,
Subject,Keywords,andCreator.
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PageDescriptionLanguages
Formoreinformation,seethexAdminUserGuide.
PostScriptPPDFiles
Printerdefinitionsenableyoutoconfigureyouroutputdevicesbyspecifyingsettingsforyourprinter
andidentifyingprinterresidentimages.PrinterdefinitionsuseyourprintdevicePostScriptPrinter
Description(PPD)filetoidentifyallofthefeaturesandsettingssupportedbythedevice.
PPDfilesarecreatedbyvendorstodescribetheentiresetoffeaturesandcapabilitiesavailablefor
theirPostScriptprinters.APPDalsocontainsthePostScriptcode(commands)usedtoinvokefeatures
fortheprintjob.Assuch,PPDsfunctionasdriversforallPostScriptprinters,byprovidingaunified
interfacefortheprinter’scapabilitiesandfeatures.
YoucanimportPPDfilesthroughaPrinterdefinitioninxAdmin. OncethePPDisimported,allthe
printerfunctionsdescribedinthePPDfileareavailabletobemappedtoMarkers.Markersareplaced
atlocationsinyourdocumentorinyourdocumentstreamtoinitiatethemappedprinterfunction.
Formoreinformation,seethexAdminUserGuide.
ReversePrinting
WhencreatingPostScriptoutputonthexPressionServer,youcanusetheReversePrintingfeature.
Whenthisfeatureisenabled,theorderoftheprinteddocumentsintheoutputstreamwillbe
reversed.Forexample,insteadofprintingpages1,2,and3,itwillprintinreverseorder3,2,and1.
Formoreinformation,seethexAdminUserGuide.
RotatingPages180Degrees
WhencreatingPostScriptoutputonthexPressionServer,youcanusetheRotatePages180feature.
Whenthisfeatureisenabled,thepagesintheoutputstreamwillberotated180degrees.Formore
information,seethexAdminUserGuide.
ImagesinPostScript
ToseeatabledescribingwhatimageformatisusedforPostScriptoutput,seeHowxPressionDecides
WhichFormattoUse,page36.ForimagetyperecommendationsforPostScript,seeGeneralImage
TypeRecommendationsforYourPDL,page40. Foralistofnativelysupportedimagetypesfor
PostScript,seePDLNativeSupport,page28.TocustomizetheimageformatselectionforthisPDL,
seeHowtoCustomizetheImageFormatSelection,page37.
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PageDescriptionLanguages
PPML
PPML(PersonalizedPrintMarkupLanguage)isadevice-independentstandardthatenablesthe
widespreaduseofpersonalizedprintapplicationsinhighvolume.TheXML-basedprinterlanguage
enablesprinterstomanagevariabledatabysendingallthedatatotheprinteratonce,makingfor
muchfasterprinting.PPMLmakesthereuseofresources(reusablecontent)explicit,andenablesthe
printertoknowwhichresourcesarerequiredatparticularpointsinthejob.
Text
xPressioncanproduceoutputfortext-onlydevicessuchastextfiles,plaintextemails,Short
MessageService(SMS)devices,andreports.WhenoutputissentthroughaTextoutputdefinition,
itisassumedthatthetextwillnotbeprinteddirectly. Textoutputwillbeformattedforuseas
inputtoacomputerizedsystemsuchasemail,notepad,orfreetextinadatabase. Nopagination
relatedfunctionsareappliedtotheoutput,andallpage-levelformattingisremoved.Forexample,
xPressionwillignoreallheadersandfooters,hyphenation,tablesofcontents,leadercharacters,
andpagenumbering.
ThefollowinglistidentifiestheformattingoptionsthataresupportedthroughTextoutputdefinitions.
Formatting
Definition
LineWrapping
Linebreaksandcarriagereturncharacters(lf/cr)aresupportedforthepurpose
ofbreakinglonglines.
CharacterSets
SupportsASCII,EBCDIC,Unicode,andanyothercharactersetssupportedby
xPublish.
Tables
Tablecellsaredelimitedbyeithertabsorparagraphs.Thisoptionisconfigurable.
Bullets
Allbulletsareconvertedtoasterisks(*). Indentedbulletedlistswillreceivetab
characterstoduplicatetheindentation.
NumberedLists
Numberedlistsaresupported.Indentednumberedlistswillreceivetabcharacters
toduplicatetheindentation.
TIFF
TIFFoutputdefinitionsenableyoutosendyouroutputtoarchivesystems,faxservers,andother
electronicsystemsasanimagefile.xPressionusestheTIFFformatfortheoutputimagebecauseTIFF
providesthehighestqualityimageandalsosupportscompression. xPressioncanproducethese
imagesatvariousbitdepthsandwithvariouscompressionmethods.
Youcanchoosefromthreedifferentbitdepths:1(binary),8(grayscale),and24(RGB).Youcanalso
choosefromfourdifferentcompressionmethods:CCITTT.6,Uncompressed,LZW,andPackBits.
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PageDescriptionLanguages
Note: TheOpenTypefontZapfDingbatsStd.otfisnotsupportedforTIFFoutputbecauseitis
notsupportedbyMultivalent,anopensourcetoolusedbyxPression.EMCDocumentSciences
recommendsreplacingitwiththeWingdingsfont.
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PageDescriptionLanguages
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Chapter5
Glossary
AdobeType1Fonts
Type1fontsweredevelopedbyAdobeastheinitialnativefontformatforPostScriptandthe
AppleLaserWriterin1985. Type1fontsarecomposedoftwofiles.Onecontainstheglyphs,and
theotherthefontmetrics. PFB,PFMandAFMfilesareusedtostoreType1fontsonallplatforms
exceptMacintosh. TheType1formatsupports256characters,andisnotcapableofdescribing
largecharactersetfonts.
BitDepth
Bitdepthisthenumberofcolorsyoucanuseinadigitalimage.Withabinaryimage(1bitperpixel),
youhaveonlyonecolor-black(thepaperiswhite).WithaCMYKimage(32bitperpixel)canuse
upto4,294,967,296differentcolors.
Embedding
Thestrategyofembeddingfontsdirectlywithinadocument.Documentsthatcontainembedded
fontscanbereproducedfaithfullybyusingtheembeddedfonts. Whenrenderingthedocument,
thefontisextractedandfedtothefontmachineryoftherenderingmechanism(PDF,PostScript,
AFP,etc.).Whenembeddingfonts,theoutputfilesmustcontainfontsthatcanrangefrom20kto
20MBdependingonthenumberofcharacters.
Encoding
Encodingistheassociationofanumberwithaglyphinafont.Charactersintextarerepresented
bynumericvalues.Whenyoupressakeyonakeyboard,youarereallyenteringanumberintothe
computer. Thecomputertakesthatnumberandusingtheencodingofthefont,matchesituptoa
littledrawingofacharacterforyou. Thisisencoding.
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Glossary
FontMetrics
Fontmetricsdefineinformationsuchascharacterwidthandheight. Applicationsthatusefonts
generallystackcharactersupagainsteachother.Typicallythespacedefinedbythefontmetricis
widerthantheactualglyph,otherwisecharacterswouldtouchoroverlap.
Glyphs
Aglyphistheshapegiveninaparticulartypefacetoaspecificsymbol.Itisaparticulargraphical
representationofacharacter. Thinkofafontasalotofverycarefullydrawnlittledrawings.The
glyphisthislittledrawing.Differentfontshaveadifferentnumberofglyphs.Forexample,afontcan
containafullwesterncharactersetaswellasafullChinesecharacterset.
ICCColorProfiles
Colormanagementisthecontrolledconversionbetweenthecolorrepresentationsofvariousdevices
(suchasdigitalcameras,monitors,TVscreens,filmprinters,computerprinters,andoffsetpresses)
andcorrespondingmedia.
Theprimarygoalofcolormanagementistoobtainagoodcolormatchacrossdevicessuchasprinters
andmonitors.Thisgoalisaccomplishedbymeasuringtheresponseofeachcolormanageddevice
andcompensatingforitsinaccuracieswhendisplayingcolors. EachmanageddevicehasanICC
(InternationalColorConsortium)profilethatdescribesitsresponse.ICCcolorprofilesembeddedin
imagesaresupportedinPDFbutnotinotherstreams.
Note: ICCcolorprofilesarenothonoredwhenimagesareresampled.Forthisreason,donotuse
Resamplingwithcolormanagedimages.
Kerning
Kerningistheadjustmentofthespacingbetweentwospecificcharacterswhentheyappeartogether.
LosslessCompression
Losslesscompressionreferstocompressiontechniquesinwhichnodataislost.ThePKZIP,ZIP,and
TARcompressiontechnologiesareexampleoflosslesscompression.Formosttypesofdata,lossless
compressiontechniquescanreducethespaceneededbyonlyabout50%.Thesecompressionschemes
encoderedundantdatawithadescriptionofthatdata.
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