Patent ID: 9724922
Date: 2017-08-08
CPC Classifications: B41J

Claim:
1. A method of removing printing fluid puddles from an exterior nozzle surface of an inkjet printhead, the method comprising: selectively applying a suction signal for a first time period to a plurality of actuators associated with fluid channels of corresponding nozzles by a control module, wherein the suction signal is a pulse width modulation signal having an amplitude value and a pulse width value, wherein the selective application of the suction signal is to move printing fluid within the fluid channels associated with the actuator, wherein movement of the printing fluid in the fluid channels is to create suction in each one of the associated fluid channels and through the corresponding nozzles to remove the printing fluid puddles from the exterior nozzle surface by pulling the printing fluid puddles through the corresponding nozzles and the associated fluid channels, wherein the pulse width modulation signal has a pulse width value within a pulse width range of 0.5 to 12 microseconds, an amplitude value in an amplitude range of 23 to 42 volts, and a frequency in a frequency range of 1 to 35 kilohertz.