1. Toner cartridges are used by laser printers and use toner to print; ink cartridges are used by inkjet printers and use ink, and they are suitable for different product ranges.

2. Laser printers rely on lasers to form images; inkjet printers rely on ink to form images. The imaging principles are also different.

3. Toner cartridges are filled with toner, and ink cartridges are filled with ink. Ink cartridges can be used for continuous supply, but toner cartridges cannot.