A continuous ink system (continuous ink supply system CISS) is a low-cost substitute for inkjet cartridges. In contrast to conventional cartridges, the CISS uses very large ink tanks that are connected via hoses with the print head. The container can be simply filled, often even no extra accessories are needed.
The inkjet printer industry considers that continuous ink system as a danger for the sale of ink cartridges, while users with high volume demand lower ink costs. The result is neck and neck – the manufacturers change the ink composition, chips, and cartridge models so often that the CISS manufacturer have much troubles, to keep up with the development.
Unfortunately, not all manufacturers get this. After all, business is greed and they do not care if consumers suffer.
The big advantage of the CISS technology is not only cost savings, but also the possibility to use special inks. The printer ink is not just color. Special components must be included to ensure the fluidity. For example also serves as rust protection for the microscopical fine print head nozzles and many heads even as a coolant.