Patent ID: 6457800
Filing Date: 2002-10-01
Classification: B41J

Abstract:
A method for tolerance compensation in an ink jet print head, which comprises:providing an ink jet print head with a plurality of obliquely disposed and mutually equidistant modules having first effective nozzles intended to lie on a line orthogonal to a transport direction of a print carrier; assessing test printouts, then mechanically compensating for existing gaps at transitions from one module to another by a rotation of the ink jet print head, and externally storing the gaps in memory as a correction value, before a final installation of the ink jet print head in a printing device; supplying the individual data with information for excluding a nozzle from a printing operation, if the printed dots overlap because of the rotation of the ink jet print head; and then controlling the ink jet print head with a printing control computer by electronically generating individual print data as correction data for the ink jet print head and storing the print data in a nonvolatile manner within the ink jet print head.