Hp Indigo B.v.

Hewlett-packard Development Company, L.p.

Sagi Yehonatan Refael

Pavel Blinchuk

Rodolfo Jodra Barron

Eyal Bodinger

Ran Waidman

Lior Katz

Iliya Shahamov

Bodinger Eyal

Methods of measuring colors, methods of calibrating printers and printing systems for implementing the methods are disclosed. Calibration maps are printed on print media. The calibration maps have intertwined contiguous printed and non-printed areas. One or more color signals are measured on contiguous printed areas. One or more noise signals are measured on non-printed areas that are adjacent to the contiguous printed areas. Clear color signals are generated by removing the one or more measured noise signals from the one or more measured color signals.

Measuring color and calibrating printers

A printer () is disclosed. The printer has two scanners () in the paper path of the printer located after the print zone (). The two scanners are spaced apart from each other by a known distance A and overlap each other in a direction perpendicular to the media axis of travel. The two scanners capture a first and second image of the media.

Printer with two scanners

A method for determining a printing position, such as for image-on-paper registration in a printer or photocopying machine, is disclosed. A fiducial mark pattern comprising a plurality of fiducial marks at predefined relative distances is provided on a printing medium, and is scanned. The fiducial marks and a first edge of the printing medium are identified in a scanned representation of the printing medium. A first distance between the first edge and a first fiducial mark is determined, and a second distance between a second fiducial mark and a third fiducial mark are likewise determined from the scanned representation of the printing medium. The distance between the fiducial mark pattern and the first edge is computed based on both the determined first distance and the determined second distance. The invention also relates to a corresponding system and a computer-readable medium for determining a printing position.

Methods and systems for determining a printing position

Growing community of inventors

Ness Ziona, Israel

Sagi Yehonatan Refael