| 摘要 |
Method and apparatus for controlling the transport and the positioning of sheets. Using a measuring unit (2) which comprises a light source (12), an optical element (14) and photoelectric elements (16), the position of a sheet (6) is monitored and controlled. For this purpose, the output signals of the photoelectric elements (16) are supplied to a control unit (20) which, on the basis of data supplied by the printer countrol unit (24), provides corresponding control signals for the sheet transport rollers (34) or the drive means (36) of the transport (38) for re-adjustment of the measuring unit (2).
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