Private Sub SaveLastSaneAcquiredImageToPdf(acquiredImage1 As Vintasoft.Sane.SaneAcquiredImage, productName As String)
    ' set settings of PDF encoder
    Dim pdfEncoderSettings As New Vintasoft.Sane.ImageEncoders.SanePdfEncoderSettings()
    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("c:\test.pdf", pdfEncoderSettings)
End Sub

private void SaveLastSaneAcquiredImageToPdf(Vintasoft.Sane.SaneAcquiredImage acquiredImage1, string productName)
{
    // set settings of PDF encoder
    Vintasoft.Sane.ImageEncoders.SanePdfEncoderSettings pdfEncoderSettings =
        new Vintasoft.Sane.ImageEncoders.SanePdfEncoderSettings();
    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(@"c:\test.pdf", pdfEncoderSettings);
}