The HP 78A toner cartridge is a black ink cartridge designed for use with certain HP LaserJet printers. It is known for its compatibility with various printer models. Here are the key features and characteristics of the HP 78A toner cartridge:

1. Color: The cartridge contains black toner, making it suitable for monochrome (black and white) printing.
2. Page Yield: The HP 78A toner cartridge has a standard page yield, which indicates the estimated number of pages it can print before requiring replacement. Page yield can vary based on factors such as the content of your documents and your printing settings, but it’s typically around 2,100 to 2,400 pages.
3. Print Quality: Genuine HP toner cartridges are engineered to produce high-quality prints with sharp text and clear graphics. They are designed to work seamlessly with HP printers, ensuring consistent and reliable results.