Ghostscript Schriftarten benutzen in powershell RTF - PDF Drucker

$documents_path = 'c:\pdftest'  

$word_app = New-Object -ComObject Word.Application

# This filter will find .rtf documents
Get-ChildItem -recurse -Path $documents_path -Filter *.rtf? | ForEach-Object {

    $document = $word_app.Documents.Open($_.FullName)

    $pdf_filename = "$($_.DirectoryName)\$($_.BaseName).pdf"  

    $document.SaveAs([ref]$pdf_filename, [ref]17)

    $document.Close()
}

stop-process -name WINWORD