How do I uninstall and reinstall the HP printer software on a Mac?
To uninstall, disconnect the HP printer from your computer, open the Applications: Hewlett-Packard folder, and double-click HP Uninstaller, following the on-screen instructions. To reinstall, connect the USB cable, insert the HP software CD, open the CD on the desktop, double-click HP Installer, and follow the on-screen instructions. (Page 2)
From the official HP Deskjet 1000 Printer Series J1 manual, page 2
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