HP Deskjet Printer Utilities – HPZTSBxx.EXE
HPZTSB01.EXE, 02.EXE, 03.EXE, 04.EXE, 05.EXE and 06.EXE are installed with various HP Desjket printers.
HPZTSB01 is a ghostscript driver for printers using PCL3 (Printer Command Language) version 3 or later.
HPZTSB04 creates a printer toolbox in your system tray. This one that can be safely removed.
HPZTSB02, HPZTSB03, HPZTSB05 and HPZTSB06 are print spooling applications. They notify you when your ink cartridge is low, Detect HP Devices connected to your system, and recognize when a card has been inserted into your printer (most common with Photosmart printers). It may be best to leave these in place. If you do opt to remove them, please be sure to have your HP Printer software CD handy in case you need to reinstall.
The latest printer drivers for your HP printer can be found at http://welcome.hp.com/country/us/eng/support.html.
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Hewlett Packard