1. A method for detecting a defect in an inkjet print head, comprising: marking images on a rotating intermediate substrate according to a consecutive image sequence, wherein the rotating intermediate substrate is divided into two or more portions that are each capable of receiving an image; marking a test image on at least one blank portion of the intermediate substrate, the blank portion resulting from the consecutive image sequence, wherein the at least one blank portion comprises at least one of the two or more portions of the rotating intermediate substrate when one of the two or more portions is blank; evaluating the test image with a sensor, wherein the rotating intermediate substrate rotates and moves the test image on the rotating intermediate substrate so that the test image is adjacent to the sensor; and determining whether the inkjet print head is defective based on the evaluation.