Fire pulse circuit and method of use

摘要

A fire pulse circuit for use in an inkjet printer includes an input control signal transmitted from a controller to a logic AND gate and to fire truncation logic; fire truncation logic adapted to truncate a pulse width of the input control signal to a maximum allowable pulse width if the duration of the pulse exceeds a maximum allowable time; a logic AND gate that receives inputs from both the input control signal and the fire truncation logic to produce an output fire pulse signal that operates to optimally fire an inkjet heater driver logic to heat the heater to nucleate ink from the print head. The circuit is formed from either a combination of digital and analog components or from exclusively digital components. A method of using the circuit to generate an output fire pulse to an inkjet heater driver logic is also disclosed.

主权项

1. A fire pulse circuit comprising:
a input control signal transmitted from a controller to a logic AND gate and to fire truncation logic; fire truncation logic to truncate a pulse width of the input control signal to a maximum allowable pulse width if the duration of the pulse exceeds a maximum allowable time; and a logic AND gate that receives inputs from both the input control signal and the fire truncation logic to produce an output fire pulse signal that operates to optimally fire an inkjet heater driver to heat the heater to nucleate ink from the print head.