Transfer Belts

The latest generation of color laser printers have four toning stations (CMYK). Paper passes over all four stations in one cycle which enables higher print speeds.

This design requires precise positioning of the belt with respect to the paper during the toning cycle. This need defines the properties of a seamless belt for a perfect printout:

  • Perfect, defect-free surface
  • Tight tolerances of diameter, length, width and surface roughness
  • Precisely defined electrical conductivity over the entire belt surface

KB RollerTech`s capabilities:

  • Diameters: up to 1,000 mm
  • Width: up to 600 mm
  • Thickness: 50 - 100 µm (±10%)
  • Electrical properties: 1E5 - 1E16 Ohm cm
  • Roughness: < 1.0 Ra

Primary and Transfer Charge Rollers

Charge rollers are critical for long lasting, high quality printouts in laser printers and copiers. KB Roller Tech’s special compounds enable charge rollers to maintain continuously stable electrical properties.

Primary charge rollers are mostly soft coated rollers with sensitive surfaces and precisely defined electrical properties. They are in contact with the photoconductor and transfer electrical charge in the nip area. The contact arc is created by the soft charge roller touching the hard coated photo-conductor drum.

KB RollerTech`s capabilities:

  • Length: < 354 mm
  • Hardness: 45 - 72 Asker C
  • Electrical properties: 1 ~ 10M Ohm (bei 500V/20°C ± 5)