Powershell mail merge only prints first page - powershell

Question

I am using Powershell to script a mail merge using MS Word and the code below... The merge executes correctly, however when I use the .PrintOut() command, only the first page is printed.
Is there anyway I can force it to print all of the pages from the completed merge?
Thank you.
$word = New-Object -ComObject "Word.application"
$word.visible = 1
$doc = $word.Documents.Open("$PSScriptRoot\resources\templateFile.docx")
$doc.MailMerge.Execute()
$doc.PrintOut()
$quitFormat = [Enum]::Parse([Microsoft.Office.Interop.Word.WdSaveOptions],"wdDoNotSaveChanges")
$word.Quit([ref]$quitFormat)

Answer 1

Try specifying WdPrintOutRange as wdPrintAllDocument:
$doc.PrintOut(
[ref]$false,
[ref]$false,
[ref][Microsoft.Office.Interop.Word.WdPrintOutRange]::wdPrintAllDocument
)

Answer 2

Finally figured it out... My original code opened the "templateFile.docx" file and then executed the Mail Merge which actually creates a new document called "Form Letters1.docx"
Simply issuing the $doc.PrintOut() command will print the original (non-merged) "templateFile.docx" which is only a single page.
The solution is to switch "focus" to the newly created / merged document before printing.
Here is the working code:
$word = New-Object -ComObject "Word.application"
$word.visible = 1
$doc = $word.Documents.Open("$PSScriptRoot\templateFile.docx")
$doc.MailMerge.Execute()
($word.documents | ?{$_.Name -match "Letters1"}).PrintOut()
Start-Sleep -Seconds 5
$quitFormat = [Enum]::Parse([Microsoft.Office.Interop.Word.WdSaveOptions],"wdDoNotSaveChanges")
$word.Quit([ref]$quitFormat)
Another interesting point is the "Start-Sleep" command... without it, Word exits before it can get the merged document to the queue, resulting in nothing being printed.