Patent ID: 9050823
Filing Date: 2015-06-09
Classification: B41J

Abstract:
1. A method for producing a printing image made up of sections on a material to be printed using two inkjet printing heads, the printing image in a y direction is made up of a first and a second printing image section meeting at a y coordinate location Y1, and a first printing head producing the first section and a second printing head producing the second section, which comprises the steps of: choosing a data stripe extending in an x direction and having a width DY about the location Y1 in data of the printing image; examining the data of the printing image in the data stripe for a presence of a data field of an extent dx in the x direction and dy in the y direction, in which edge detection is possible, selecting the data field and capturing an x coordinate x1 and a y coordinate y1 of the data field and when examining the data of the printing image, carrying out an examination as to whether the data field has a homogenous color density; producing the printing image; recording an image of a measurement field correlated to the data field on the material to be printed using a camera, wherein the image recorded is at a location x1, y1 and has at least a size dx*dy; carrying out the edge detection in the data of the image of the measurement field; and correcting a y position of at least one of the first and second printing heads in case an edge is detected.