DUAL-MODE INKJET NOZZLE OPERATION

摘要

An inkjet printhead includes an inkjet nozzle with a main actuator and at least one peripheral actuator in the same firing chamber. A determination is made as to whether the inkjet nozzle has sat idle, e.g., not firing for a threshold period of time. When the inkjet nozzle has sat idle, both the main actuator and the peripheral actuator are activated to jet at least one ink drop to renew the inkjet nozzle to mitigate decap conditions. When the inkjet nozzle has not sat idle, only the main actuator is activated to jet ink drops.

主权项

1. A method for operating an inkjet nozzle, comprising:
determining if an inkjet nozzle has sat idle before operating, wherein the inkjet nozzle has sat idle when the inkjet nozzle has not jetted for a threshold period of time; operating in a boost firing mode if the inkjet nozzle has sat idle, comprising pulsing both a main resistor and at least one peripheral resistor in a firing chamber of the inkjet nozzle to jet a first ink drop; and operating in a normal firing mode after operating in the boost firing mode, comprising pulsing only the main resistor to jet a second ink drop.