Patent ID: 8579405
Filing Date: 2013-11-12
Classification: B41J

Abstract:
1. A method for detecting a media touch of a print head of a printing apparatus during a printing operation, the print head and a recording medium being arranged to be moveable with respect to each other, the method comprising the steps of: receiving a feedback signal relating to a status of the print head during the printing operation, wherein during the printing operation, the print head is maintained at a distance from a platen, the recording medium being arranged on the platen; determining from the feedback signal a status parameter of the print head; comparing the status parameter with a reference parameter; and determining whether the print head has touched the medium based on a result of the comparison in said step of comparing, wherein the feedback signal comprises a malfunctioning-nozzles signal, the malfunctioning-nozzles signal being suitable for deriving a number of malfunctioning nozzles of the print head and wherein the status parameter of the print head is determined from the derived number of malfunctioning nozzles.