Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 27, 2007
Patent Application Number
10992757
Date Filed
November 22, 2004
Patent Primary Examiner
Patent abstract
An inkjet printer includes a processor that communicates, via a printhead interface circuit, with an electromechanical printhead having a plurality of ink ejection nozzles. The printhead interface circuit transfers data from the processor to the printhead using a double buffering scheme built on first and second buffers that are alternatively loaded with nozzle fire enablement data. Output sides of the first and second buffers are connected to a multiplexor that is in turn coupled to a printhead interface circuit. In order to increase data throughput, while one of the buffers is loaded with the data, data from the other is transferred to the printhead interface circuit.
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