Hewlett-Packard Company

Jesus Soto

Antoni Gil Miquel

Fabien Chanussot

Variances are introduced into at least one component of a large format inkjet printer to substantially reduce the formation of vertical bands during a printing process. In one respect, the relationship between the carriage speed and the vibrations caused by operation of the voltage receiving component is utilized in the implementation of the variances. That is, operation of the voltage receiving component creates a temporal frequency caused by its vibration which leads the carriage to vibrate at a certain rate of time (temporal frequency) as it travels across the printing pass. At least by virtue of the travel across the printing pass, the carriage converts the temporal frequency caused by the vibrations of the carriage and the voltage receiving component into a spatial frequency. The temporal frequency generally translates into a delay or an event that occurs at certain moments in time which may cause drops of ink that are fired to be misplaced on the medium. By altering the temporal frequency of the voltage receiving component and/or the carriage speed at certain times during the printing operation, the spatial frequencies at which the delays or events occur may be spread out to prevent them from accumulating and resulting in vertical banding.

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Barcelona, Spain

Jesus Soto