Designation:E2285−08StandardGuideforExaminationofMechanicalCheckwriterImpressions1ThisstandardisissuedunderthefixeddesignationE2285;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguideprovidesproceduresforexaminationsthatshouldbeusedbyforensicdocumentexaminers(GuideE444)forexaminationsandcomparisonsinvolvingmechanicalcheckwritersandtheirimpressions(exclusiveofrubberstampcheckwriterimpressionsorcomputergeneratedcheckwriterimpressions).1.2Theseproceduresareapplicablewhethertheexamina-tion(s)andcomparison(s)areofquestionedandknownitemsorofexclusivelyquestioneditems.1.3Theseproceduresincludeevaluationofthesufficiencyofthematerialavailableforexamination.1.4Theparticularmethodsemployedinagivencasewilldependuponthenatureandsufficiencyofthematerialavail-ableforexamination.1.5Thisguidemaynotcoverallaspectsofparticularlyunusualoruncommonexaminations.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatoryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E444GuideforScopeofWorkofForensicDocumentExaminersE1732TerminologyRelatingtoForensicScienceE2195TerminologyRelatingtotheExaminationofQues-tionedDocuments3.Terminology3.1Definitions—FordefinitionsoftermsinthisGuide,refertoTerminologyE1732andTerminologyE2195.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1blemish,n—asmallextraneousspotfoundnearinkedregionsofcheckwriterimpressionsthatischaracteristicofmachinesthatuseribbonsastheirinksource.3.2.2checkwriter,n—adevicemanuallyorelectricallypow-eredorcomputergenerated,designedtoink,emboss,print,perforate,orshredamonetaryvalue,alongwithotherperiph-eralinformation,ontoadocument.3.2.3im...
