发明名称 |
METHOD AND DEVICE FOR ACCURATELY POSITIONING A PATTERN ON A SUBSTRATE |
摘要 |
A printing machine comprises an X-Y table (50) for moving a substrate (30) with respect to a print head (20). During a printing process, the substrate (30) is moved, whereas the print head (20) is intermittently activated to fire ink droplets. A camera (25) is arranged for providing images of the substrate (30) to a computer which is programmed to recognize patterns. In order for the print head (20) to be able to print a spot at a predetermined position on the substrate (30), an offset between a predetermined and an actual mutual position of the substrate (30) and the print head (20) is measured and compensated for. For the purpose of measuring this offset, a test spot (38) is printed on the substrate (30) and an offset between a predetermined and an actually obtained position of this test spot (38) is measured by means of pattern recognition.
|
申请公布号 |
KR20060038439(A) |
申请公布日期 |
2006.05.03 |
申请号 |
KR20067000271 |
申请日期 |
2006.01.05 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
VAN DAM DIRKJAN B.;VAN DEN BESSELAAR LEONARDUS J. C. |
分类号 |
H05B33/10;B41J2/01;G03F9/00;H01L51/56 |
主分类号 |
H05B33/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|