High security printing of passports

Each passport contains an alphanumeric code for unique identification. The electronically controlled, servomotor-driven random numbering system LENservoP has been especially designed for the imprint of those independent sequences of numbers and letters.


The intelligent numbering system LENservoP is tailored to the specific needs of passport numbering:

  • High flexibility as a result of a maximum of 11 motorized wheels instead of 7
  • Easy integration into passport machine due to unique design
  • Suitable for hot-foil applications

Additional functions, such as automatic temperature control of the number or letter wheels using a heating cartridge, make the LENservoP ideal for security printing of passports. Moreover, the electronically controlled random numbering machine LENservoP offers all benefits of LENservo numbering systems: high reliability, sturdiness, precision, maximum flexibility and production efficiency. While mechanical numbering machines offer only two options – counting forwards or backwards – the numbering systems of the LENservo series give you complete freedom to program the numbering sequences.

  • Up to 11 servomotor-controlled letter/number wheels depending on layout
  • User-programmable numbering sequences
  • Automatic takeover and setting of start numbers
  • Automatic pre-inking  
  • Long service life ensured by in-house hardening and coating process
  • Communication with the control unit outside the machine using a slip ring with only a few contact races
  • User-oriented, Windows-based control panel with touchscreen
  • Easy access to all relevant information on the monitor
  • Job and user management
  • Production logging
  • Error notification and management report
  • Customer-specific adaptations

Maintenance and wheel replacement are far more convenient for the LENservoP than for conventional numbering machines. The revolutionary patented fold-out mechanism lets you open the numbering machine with just a few hand movements. You can remove the entire set of wheels for cleaning while the electronic parts remain in the housing. This one-of-a-kind design substantially reduces both maintenance and setup times. In addition, the compact design of the LENservoP reduces the distance around and across to a minimum.

  • Passport numbering (linear)
  • Single banknote numbering (rotary)
  • Especially designed for installation in passport machines
  • Machine-specific interfaces
  • Compact installation dimensions