Printer.Duplex (Access)
Returns or sets an AcPrintDuplex constant indicating how the specified printer handles duplex printing. Possible return values are acPRDPHorizontal - Double-sided printing using a horizontal page turn, acPRDPSimplex - Single-sided printing with the current orientation setting, acPRDPVertical - Double-sided printing using a vertical page turn.
Sub SetPrinter(strFormname As String)
DoCmd.OpenForm FormName:=strFormname, view:=acDesign, _
datamode:=acFormEdit, windowmode:=acHidden
With Forms(form1).Printer
.TopMargin = 1440
.BottomMargin = 1440
.LeftMargin = 1440
.RightMargin = 1440
.ColumnSpacing = 360
.RowSpacing = 360
.ColorMode = acPRCMColor
.DataOnly = False
.DefaultSize = False
.ItemSizeHeight = 2880
.ItemSizeWidth = 2880
.ItemLayout = acPRVerticalColumnLayout
.ItemsAcross = 6
.Copies = 1
.Orientation = acPRORLandscape
.Duplex = acPRDPVertical
.PaperBin = acPRBNAuto
.PaperSize = acPRPSLetter
.PrintQuality = acPRPQMedium
End With
DoCmd.Close objecttype:=acForm, objectname:=strFormname, _
Save:=acSaveYes
End Sub