Private Sub SaveLastWiaAcquiredImageToPdf(acquiredImage1 As Vintasoft.WiaImageScanning.WiaAcquiredImage, productName As String)
    ' set settings of PDF encoder
    Dim pdfEncoderSettings As New Vintasoft.WiaImageScanning.ImageEncoders.WiaPdfEncoderSettings()
    pdfEncoderSettings.PdfDocumentInfo.Author = "VintaSoft LLC"
    pdfEncoderSettings.PdfDocumentInfo.Title = String.Format("Documents acquired from {0}", productName)
    pdfEncoderSettings.PdfDocumentInfo.Creator = "VintaSoft Twain .NET SDK"
    pdfEncoderSettings.PdfDocumentInfo.CreationDate = System.DateTime.Now

    ' save image to PDF document
    acquiredImage1.Save("d:\test.pdf", pdfEncoderSettings)
End Sub

private void SaveLastWiaAcquiredImageToPdf(Vintasoft.WiaImageScanning.WiaAcquiredImage acquiredImage1, string productName)
{
    // set settings of PDF encoder
    Vintasoft.WiaImageScanning.ImageEncoders.WiaPdfEncoderSettings pdfEncoderSettings =
        new Vintasoft.WiaImageScanning.ImageEncoders.WiaPdfEncoderSettings();
    pdfEncoderSettings.PdfDocumentInfo.Author = "VintaSoft LLC";
    pdfEncoderSettings.PdfDocumentInfo.Title = string.Format("Documents acquired from {0}", productName);
    pdfEncoderSettings.PdfDocumentInfo.Creator = "VintaSoft Twain .NET SDK";
    pdfEncoderSettings.PdfDocumentInfo.CreationDate = System.DateTime.Now;

    // save image to PDF document
    acquiredImage1.Save(@"d:\test.pdf", pdfEncoderSettings);
}