(Australian Innovative Patent #2013101393 refers) | Canon have recently changed the methodology of the seals they use between the cartridge and print head. The rihac R&D Team have developed an exclusive patented head seal system to use in conjunction with refillable cartridges for a greater seal. | Technically speaking, the greater density and plasticity coupled with reduced barrelling ensures greater uniaxial compression. In simple terms this means using them makes your cartridges reliable with no issues caused by air and ink leakage. |