Xerox manufactures a wide variety of laser toner cartridges for their laser printers. They also offer replacement cartridges for HP laser printers, which they claim are less expensive than OEM HP cartridges and perform the same or better.
Xerox has created a recycling program for their cartridges. However, the cartridges must be eligible for the program. Otherwise, Xerox reserves the right to return ineligible cartridges at your expense.
The link above provides a list of the top suppliers of Xerox toner cartridges. Check with each supplier for the availability of your cartridge model.