| 摘要 |
<p>The detection system includes a cartridge (8) having a first detection portion (31, 82b) for detecting the pressure condition in the top of the cartridge and a second detection portion (33, 82a) and tube (89) for detecting the pressure condition in the bottom of the cartridge. The cooperative printer structure couples these detection portions to a pressure differential sensor (130) that signals a printer refill condition.</p> |
