Designation:F1457−94b(Reapproved2011)StandardTerminologyRelatingtoLaserPrinters1ThisstandardisissuedunderthefixeddesignationF1457;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesedefinitionsareintendedforusersoflaserprinters,sothattheywillbeabletobetterunderstandtheterminologyusedbyothersinthefield.Forgeneraltermsrelatedtoprinters,seeTerminologyF909.2.ReferencedDocuments2.1ASTMStandards:2F909TerminologyRelatingtoPrintersF1125TerminologyofImageQualityinImpactPrintingSystems3.Terminology3.1Definitions:A4A—symbolforISOstandardmetriccut-sizepaperwhichisnominally20by30cmorexactly210by297mm.ACK,n—acommunicationcontrolcharactertransmittedbyareceiverasanaffirmativeresponsetoasender;asignalthattheprinterreceiversendstothehostindicatingthattheprinterhasreceivedamessageandisreadytoreceivethenextmessage.ADC—abbreviationforautomaticdensitycontrol.AmericanStandardCodeforInformationInterchange—adatacommunicationscodesetconsistingofa7-bit-plus-paritycodethatcanbetranslatedwithaleading“0”asan8-bitset.(SeeASCII.)ASCII—AmericanStandardCodeforInformationInter-change.asynchronous,adj—adatatransmissioninwhichthetimebetweentransmittedcharacterscanvary,itiscontrolledbystartandstopcodesatthebeginningandendofdatasets.(Seesynchronous.)automaticdensitycontrol,n—theprocesswherebythetonerlayerdepositedonthesubstrateiscontrolledbytheprinter.(SeeADC.)baud,n—ameasureofdatatransmissionspeed;ideallyonebaudequalsonebitpersecond.BCD—abbreviationforblockcircuitdiagram.beadcarryover—beadsofdeveloperappearingonaprintorcopy,orboth;adeletionaroundeachparticleiscommon.binarydigit,n—aunitofelectronicdata.(Seebit.)binarysynchronoustransmission,n—aformofdatasend-ing.(Seebinarydigit,synchronous,andasynchronous.)bisynic(BSC),n—anIBM-developedmethodofbinarysyn-chronoustransmis...
