Francesc Subirada

Detection of non-firing printhead nozzles by optical scanning of a test pattern

Techniques for measuring the position of marks on media and for aligning inkjet devices

Scanning an inkjet test pattern for different calibration adjustments

Calibration and measurement techniques for printers

Compensation for marking-position errors along the pen-length direction, in inkjet printing

High throughput parallel drop detection scheme

Method and system for calibrating ink ejection elements in an image forming device

Multicolor-printer and method of printing images

Automated test pattern technique using accelerated sequence of color printing and optical scanning

Media-position sensor system