| 摘要 |
An ink surface detecting system has an ink cartridge and a first optical detector, and a second optical detector positioned above the first optical detector. The ink cartridge has an ink chamber and a pivoting member having a detected portion and a floating portion. A first distance between the center of pivotal movement of the pivoting member and a first end of the pivoting member is different from a second distance between the center of pivotal movement and a second end of the pivoting member.
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