HP Designjet printer complete list by model number, with suggestions on a reliable ink company for after-market ink, especially for HP Designjet 5000 and 5500, but also others.
Amazon.com: New Carriage Belt for HP DesignJet 500 510 800 815 820 42 inch C7770-60014 Plotter with Pulley : Office Products
HP DesignJet HD Pro PostScript Inkjet Large Format Printer - Includes Printer, Scanner, Copier - 44" Print Width - Color - 2QX51E#B1K - Large Format & Plotter Printers - CDW.com
HP DesignJet 510 - CH336A - HP Plotter for Sale
Review of the HP DesignJet Studio Large-Format Plotter | Engineering.com
HP DesignJet 500 Plotter- C7769B - HP Plotter for Sale
HP Designjet 510 Power Supply - Refurbished (CH336-60020, — Wide Image Solutions
Amazon.com: SonilcoⓇ Carriage Belt for HP DesignJet 500 510 800 815 820 42 inch C7770-60014 Plotter with Pulley : Office Products