Patent ID: 7240990
Filing Date: 2007-07-10
Classification: B41J

Abstract:
1. An ink cartridge, comprising: an ink chamber, storing ink; an ink supply port, communicating with the ink chamber, and adapted to engage with an ink supply needle formed in a mounting portion of a recording apparatus, so that the ink is supplied to a recording head of the recording apparatus when the ink cartridge is mounted in the mounting portion; a retaining member, having a projected portion adapted to engage with an engaging portion formed in the mounting portion; a valve device, having a biasing member provided in the ink supply port and configured to normally keep closed the valve device, wherein, when the ink supply needle is inserted to the ink supply port, the valve device is opened against the biasing member so as to resiliently abut the projected portion to the engaging portion, wherein the valve device includes a valve body and a coil spring.