Register control device used within a rotary printing machine

Details Register control device used within a rotary printing machine Register control device used within a rotary printing machine

B - Operations, Transporting

41

L

B41L 5/00 (2006.01) B41F 13/12 (2006.01) B41F 33/00 (2006.01) B42D 19/00 (2006.01)

Patent

CA 2082717

Disclosed is a register control device for use in a rotary printing machine. The device has a head which scans register marks printed on a web, and which comprises a row of discrete photosensitive elements arranged crosswise to the travel- ling direction of the web and in a plane situated above and parallel to the web, the head having in the same plane a linear video bar situated parallelly to the row of photosensitive elements. Moreover, this device includes a micro-processor which selects the photosensitive element to be used according to the temporary side- wise displacement of the web and controls the scanning operations of the linear video bar. The scanning head may also comprise a second row of discrete photosensitive elements arranged parallelly between the first row of discrete photosensitive elements and the linear video bar.

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