Printer.ItemLayout (Access)
Returns or sets an AcPrintItemLayout constant indicating whether the printer lays columns across, then down, or down, then across. Possible return values are acPRHorizontalColumnLayout - Columns are laid across, then down, acPRVerticalColumnLayout - Columns are laid down, then across.
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