>the printer i try to print the barcode "HP LaserJet 1100, 1020" also i try on POSflex 7000 Printer.
>
>all i have the same case., yes i can see barcode fonts when i preview the report.

Do you have a PDF driver on your computer? You can get a free one at http://www.cutepdf.com/products/cutepdf/Writer.asp. Try print to PDF and see if barcode is there.