| 摘要 |
<p>A printhead for an ink jet printer includes at least one printhead chip, which includes a substrate (16) and a plurality of nozzle arrangements (10) positioned on the substrate. Each nozzle arrangement (10) includes nozzle chamber walls and a roof wall that define a nozzle chamber. A nozzle guard (80) is positioned on the printhead chip and includes a body member (82) that is spaced from and spans the printhead chip and which defines a plurality of passages (84) that extend through the body member. The body member is positioned so that each passage (84) is aligned with one of the ink ejection ports. A support structure is interposed between the body member and the printhead chip. It is configured to permit the flow of air into a space (88) defined between the body member and the printhead chip and through each passage to keep the passages clear of particles.</p> |
