Patent ID: 6543882
Filing Date: 2003-04-08
Classification: B41J

Abstract:
An ink jet firing system, comprising:a plurality of firing cells comprised of a plurality of heater resistors, a plurality of dynamic memory circuits having respective dynamic memory elements for storing energizing data and associated with respective ones of said heater resistors, and a plurality of energy switching circuits for enabling transfer of energy to associated ones of said plurality of heater resistors as a function of a state of energizing data stored in associated ones of said plurality of dynamic memory circuits, wherein each of said plurality of dynamic memory circuits stores energizing data solely for an associated heater resistor; a control circuit for providing energizing data to said plurality of dynamic memory circuits and for selectively enabling said dynamic memory circuits to store said energizing data; and an energy supply circuit for selectively transferring energy to said heater resistors as enabled by said energy switching circuits.