Patent ID: 8517523
Filing Date: 2013-08-27
Classification: B41J

Abstract:
1. An ink cartridge for an inkjet printer having an ink port comprising a septum assembly, the septum assembly comprising: an inner first septum having a membrane which is piercable by a septum needle, the first inner septum communicating with an ink reservoir of the ink cartridge; and an outer second septum having a slit through which the septum needle passes adjacent the first inner septum, wherein: the first and second septa are sealingly located within the ink port and arranged such that the septum needle passes through the slit of the second septum before piercing the first septum; the first and second septa are formed of resilient material; the resilient material of the first septum is compatible with the ink contained in the ink reservoir; and the resilient material of the second septum is not compatible with the ink contained in the ink reservoir.