发明名称 |
Method for producing a printing image made up of sections on a material to be printed using two inkjet printing heads |
摘要 |
A method produces a printing image formed of sections on a material using two inkjet printing heads. The printing image has first and second printing image sections meeting at a y coordinate Y1. The method includes choosing a data stripe extending in the x direction having a width about the location Y1, and examining the data in the selected stripe for a data field of the extent dx in the x direction and dy in the y direction, in which edge detection is possible. The data field is selected and the x coordinate x1 and the y coordinate y1 of the data field are captured. The printing image is then produced. An image of a measurement field correlated to the data field is recorded. The image is recorded, and edge detection is carried out. The image is corrected when an edge is detected. |
申请公布号 |
US9050823(B2) |
申请公布日期 |
2015.06.09 |
申请号 |
US201414196043 |
申请日期 |
2014.03.04 |
申请人 |
Heidelberger Druckmaschinen AG |
发明人 |
Ratjen Hans-Juergen |
分类号 |
B41J2/21;B41J2/515;B41J3/54;B41J25/00 |
主分类号 |
B41J2/21 |
代理机构 |
|
代理人 |
Greenberg Laurence A.;Stemer Werner H.;Locher Ralph E. |
主权项 |
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. |
地址 |
Heidelberg DE |