Process and device for the positioning of a sensor apparatus

Details Process and device for the positioning of a sensor apparatus Process and device for the positioning of a sensor apparatus

G - Physics

05

D

341/105

G05D 3/12 (2006.01) B41F 33/00 (2006.01)

Patent

CA 2039654

ABSTRACT The invention refers to a process for the positioning of a measuring field of a sensor apparatus to a selected region on the outer cylindrical surface of a cylinder in a rotary printing press, as well as to a device to execute this process. The process and the device, according to the invention, serve to select a suitable measuring field on the cylinder, and to position a sensor apparatus on the selected field. This poses a problem when the measuring apparatus is too close to the cylinder or too far from the cylinder, or when the wave length of the measuring light lies in the invisible portion of the spectrum. To solve the problem it is proposed to direct the light spot (31) of a pilot light source (21) into the selected region, to store the position of this light spot (31) on the outer surface of the cylinder in a computing/control apparatus, and to control the sensor apparatus in such manner that it supplies measured data from the selected region. Figure 2.

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