Improved electro-photographic (EP) process in the HP Smart Printing system[1] of toner cartridges and printer monitors the printing environment and makes automatic, ongoing EP adjustments of particle charge throughout the printing process to optimize color density, calibration, and consistency over the life of the cartridge—even under extreme conditions like high-humidity.
Efficient, innovative HP printer/toner cartridge system design advancements including toner formulations to support fast fusing at low temperatures to achieve fast warmup time and quick first page out.