Patent ID: 6607257
Filing Date: 2003-08-19
Classification: B41J

Abstract:
An inkjet printhead comprising:a plurality of nozzles having corresponding nozzle openings for delivering ink to a receiver medium; a plurality of shift registers stages operably coupled to a plurality of actuators associated with said nozzles and adapted to cause ink to be delivered through said nozzles openings in the direction of said receiver medium, each nozzle having associated therewith an upper actuator and a lower actuator, and said plurality of shift register stages being connected into a plurality of multistage shift registers so that some shift registers (â€œupper shift registersâ€ ) are arranged to transfer data used to operate upper actuators and other shift registers (â€œlower shift registersâ€ ) are arranged to transfer data used to operate lower actuators; and a print data driver operably coupled to said plurality of shift registers via a plurality of interconnections, said plurality of interconnections comprising data lines and clock lines for delivering respectively print data signals and timing signals to said lower and upper shift registers; wherein said data lines are interleaved between said upper shift registers and said lower shift registers and wherein said print data driver is configured to operate said clock lines by transmitting timing signals that causes said upper and lower shift registers to shift data received over said data lines and thereby position data for transfer for use in operating said plurality of actuators.