The Doctor Blade is a crucial component in laser printers, used to control the distribution of toner onto the drum during the printing process. It helps to ensure the quality of prints by regulating the toner layer's thickness.

For the models you mentioned, here's a breakdown of what the Doctor Blade 55A 11A fits:

Printer Models:

• HP LaserJet P3010 Series
• HP LaserJet P3015 Series
• HP LaserJet P3005
• HP LaserJet M3027
• HP LaserJet 2300
• HP LaserJet LBP6750
• HP LaserJet 2410
• HP LaserJet 2420
• HP LaserJet 2430

These printers and multifunction devices typically use HP's 55A and 11A toner cartridges, and the Doctor Blade is part of the overall toner cartridge assembly.

Compatibility:

• Doctor Blade 55A and 11A are compatible with several HP LaserJet printers that utilize HP 55A (Q7551A) or 11A (Q6511A) toner cartridges.
• The Doctor Blade in the cartridge assembly ensures that the toner is applied smoothly and evenly to the drum for quality printing.