The invention relates to a microelectronic sensor device for the examination of target particles that are bound to binding sites at the binding surface of a carrier. Differences between the target data set and the source data set are identified by dividing the target data set into a set of target data blocks. The printhead chips are provided in a number and configuration such that the printhead chips define a printing zone between the carrier and the platen, the printing zone having a length of at least 36 inches. Inserts according to the invention exhibit favorable edge strength and thermal shock resistance.