A method of applying a marking onto a metrological scale. The method includes locating one or more markings on the scale substrate in a provisional state; checking whether the one or more markings located on the scale substrate are acceptable; and finalizing the one or markings which are acceptable so as to transform the one or more markings into a finalized state.

A difference unit may include a first sensor to identify a position of a first mark printed on a first web output from a first web press, a second sensor to identify a position of the first mark of the first web, a third sensor to identify a position of a second mark printed on a second web, and a synchronization engine to determine a synchronization difference between the first web and the second web based on the identification of the first mark and second mark as sensed by the second sensor and the third sensor.

A method for printing on a substrate is disclosed. In an embodiment of the method, the method includes printing a small print control mark of a printed color in a print zone of the substrate and printing a large print control mark of the printed color in the print zone of the substrate. A measurement value of the small print control mark and a measurement value of the large print control mark is detected by a sensor. A deviation between the measurement value of the small print control mark and the measurement value of the large print control mark is determined and an actual value of a print parameter of the printed color is corrected based on the deviation.

An inspection apparatus includes a receiving unit that receives a first image, a registration unit that generates a second image in which multiple first images are continuously arranged based on the first image if the received first image meets a predetermined condition to register the second image as a sample image, a reader that reads a read image, and an inspection unit that inspects a print based on the sample image and the read image read by the reader from the print resulting from formation of an image on a sheet by an image formation unit.

The disclosure relates to a method for processing an object, in which a printed image is printed onto the object by a digital printing facility and the object is then further processed in at least one work station. The at least one work station being controlled by an electric control unit, where at least one control character is applied to the object by the digital printing facility, the control character being detected in or upstream of the work station by at least one sensor and transmitted to the electric control unit, which controls the at least one work station depending on the control character transmitted.