| 摘要 |
<p>A solar cell extrusion printing system includes a printhead assembly (100) having one or more elongated valve structures (190-1,190-2) that are adjustably disposed adjacent to the outlet orifices (169-1 to 169-5) of selected nozzle channels (162-1 to 162-5), and a valve control device (192) for controlling the position of the valve structures to facilitate controllable ink flow through selected nozzle channels of the printhead assembly during the gridline printing process. The printhead assembly defines an elongated opening (195-A)(e.g., a slot or hole) that that intersects (i.e., passes through) each of the selected nozzle channels, and an elongated member (190-1A,190-2A) is movably disposed in the slot and is selectively movable between a first (opened) position, in which the valve structure extrusion material is passed by the valve structure through the nozzle channel and out of the printhead, and a closed position, in which the extrusion material is blocked by the valve structure and prevented from passing through the nozzle channel.</p> |
