Service Manual
Page 51
... than 47 million used print cartridges and supplies, HP encourages the use of refilled print cartridges are reclaimed for the HP LaserJet 4300). Hewlett-Packard has no control or process to HP through the HP printing supplies returns and recycling program. At five-percent page coverage, a print cartridge prints approximately 12,000 pages (for the HP LaserJet 4200) or 18,000 pages...
... than 47 million used print cartridges and supplies, HP encourages the use of refilled print cartridges are reclaimed for the HP LaserJet 4300). Hewlett-Packard has no control or process to HP through the HP printing supplies returns and recycling program. At five-percent page coverage, a print cartridge prints approximately 12,000 pages (for the HP LaserJet 4200) or 18,000 pages...