Dynamically generated documents printed online may not print correctly if the settings for your printer print graphics in “Vector” format instead of “Raster” format. Examples of this include airline boarding passes and shipping labels printed online. To check and correct this setting, go to the Advanced tab in the printing preferences for your printer. Sorry I cant put up step-by-step instructions as they very for each printer. The only printer I’ve confirmed this on so far is an HP 1160.
Barcodes from Online Documents Don’t Print