| 摘要 |
In an inkjet printing machine, an ink drop positional error correction apparatus includes a position extrapolator that is responsive to conventional position encoder pulses and uses difference equations to predict future carriage positions by mapping a position profile of the traveling carriage to a polynomial equation of an arbitrary order for generating a series of nozzle firing subpulses that account for non constant carriage velocity. A fire pulse generator responsive to the subpulses further adjusts the firing time of the printing machine nozzles to correct for the carriage velocity induced ink drop positional errors for both non constant and constant carriage velocity conditions.
|
