This research project is conducted at Océ Technologies, which develops, manufactures and sells printing and copying hardware and software. More specifically, within Océ, this research is held within the Black & White group. The Black & White groups includes a series of high speed black and white cutsheet printers. Instead of having a lot of inventory, buyers of these printers can for example print a whole book within two minutes. This research focuses on identifying quality issues in an early stage. The Black & White group encountered multiple problems regarding the quality of their machines. Instead of figuring this out when the quality has already detoriated drastically, the Black & White group wants to be able to know about possible issues as soon as possible. This is done by analyzing individual machine data, which are then used to discover general problems on various population levels.