| 摘要 |
<p>Determining compass and/or register errors in a printing machine by using an arrangement of triangles (1, 2) serving as register marks, whereby at least one first triangle (1) is printed onto a sheet (3) near its leading edge (7) and at least one second triangle (2) is printed onto a sheet (3) near its trailing edge (18), the first triangle and the second triangle are detected by a sensor (10), and a displacement of the sheet at right angles to the sheet's direction of travel and/or an angular displacement of the sheet, is determined.</p> |
