公开(公告)号：EP2024188A1

公开(公告)日：2009-02-18

申请号：EP07724100.8

申请日：2007-04-10

申请人： Eastman Kodak Company

发明人： BONESS, Jan Dirk ,  DREHER, Ingo ,  NEEFE, Nikolai ,  PETERSEN, Ralph ,  PRINZ, Matthias ,  STEUERNAGEL, Bernhard ,  SCHRADER, Stefan ,  PETER, Karlheinz, Walter ,  FREYER, Norbert

IPC分类号： B41J11/00

CPC分类号： B41J11/007 ,  B41J11/008 ,  B41J11/0095 ,  B41J13/26 ,  B65H7/10 ,  B65H7/14 ,  B65H9/20 ,  B65H2511/20 ,  B65H2553/416 ,  B65H2553/45 ,  G03G15/6564 ,  G03G15/6567 ,  G03G2215/00561 ,  B65H2220/02 ,  B65H2220/11 ,  B65H2220/01 ,  B65H2220/03

摘要： The invention relates to a method of ensuring a correct lateral registration setting, preferably in a digital multi-color sheet-printing machine, in particular during a printing process, preferably in an electrophotographically operating printing machine, in which the sheets adhering to a support, preferably a transport belt, are transported past printing units. In addition, the invention relates to a suitable printing machine. The object of the invention is to provide a measure by means of which the lateral registration of the sheets can be check, corrected and/or maintained in a simple manner. Inasmuch as the sheet adheres to the support and the sheet position on the support is known, the inventive measure can be used to check and ensure the lateral registration of the sheet in a simple and elegant manner.

公开(公告)号：EP2260354A1

公开(公告)日：2010-12-15

申请号：EP09727818.8

申请日：2009-01-22

申请人： Eastman Kodak Company

发明人： BONESS, Jan ,  DREHER, Ingo ,  HUNOLD, Heiko ,  JACHMANN, Ralf ,  PETERSEN, Ralph ,  PIEREL, Franck ,  SCHRADER, Stefan ,  WECKER, Matthias ,  DAVIS, Tim

IPC分类号： G03G15/01

CPC分类号： G03G15/0194 ,  G03G15/161 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/0161

摘要： A method for detecting errors in individual color separation images of a multi-color printing machine, in particular an electrophotographic printing machine, comprising a plurality of printing units, is described. Using this method, first a plurality of first register lines is printed with a first printing unit, and a plurality of second register lines is printed with a second printing unit in such a manner that each of the first register lines, together with one of said second register lines, is positioned inside a respective registration frame. Then the plurality of the first and second register lines in the respective registration frame are detected with a register sensor, and an output signal of the register sensor relating to the respective second register line is compared with an intensity threshold value in order to determine whether the second register lines can be recognized. In an alternative embodiment of the method, a plurality of the first register lines is printed with a first printing unit in such a manner that each of the first register lines is printed within a respective registration frame. Subsequently, the plurality of the first register lines in the respective registration frames is detected with a register sensor, and an output signal of the register sensor relating to the respective first register lines is compared with a pre-specified intensity threshold value in order to determine whether the first register lines are recognizable.