Abstract: The invention relates to a method of controlling sheets in a digital printing machine, wherein the arrival of at least one sheet in a transport path is detected at least once at at least one marked location of said transport path to improve the control of the sheets themselves during the printing operation. This is achieved in that at least one signal having a countable pulse is generated, in that a freely selectable but then fixed start of these pulses is assigned to the position of at least one frame (occupiable field) of frames—into which the minimum of one transport path segment is divided—relative to said marked location, and in that the minimum of one sheet is controlled with the use of this pulse at at least one other marked location of the transport path.

Abstract: The invention relates to a method of controlling sheets in a digital printing machine, wherein the arrival of at least one sheet in a transport path is detected at least once at at least one marked location of said transport path to improve the control of the sheets themselves during the printing operation. This is achieved in that at least one signal having a countable pulse is generated, in that a freely selectable but then fixed start of these pulses is assigned to the position of at least one frame (occupiable field) of frames—into which the minimum of one transport path segment is divided—relative to said marked location, and in that the minimum of one sheet is controlled with the use of this pulse at at least one other marked location of the transport path.

Abstract: The invention relates to a method of feeding sheets of printing material in a printing machine, preferably a digital printing machine, on a continuous loop transport means, in particular, a transport belt, which has at least one dead space section, specifically a seam, and which is preferably included in a transport path which permits the alternate selection between simplex printing and duplex printing, in which case it has been taken into account that a region, preferably the leading edge of a respective sheet on the transport means, is detected for the control of a printing process by means of a detecting device. The present invention is to solve the problem of making optimal use of space for sheets on the transport means, while avoiding detecting device errors caused by the dead space section. This problem has been solved by the present invention in that, when a sheet is fed, said sheet's region to be detected is prevented from entering into the dead space section of the transport means.

Abstract: Preparing substrates for one-sided or two-sided printing in an electrophotograpically operated digital printing apparatus, in which process substrates are fed out of a supply unit or several supply units onto a conveyor operation sequence and are transferred, preferably in the course of the conveyor operation sequence, onto a conveyor belt that runs through a printing unit, with the least possible space between successive substrates. An acceleration time related to the type of substrate stock, of which the substrate is composed, is selected for feeding a substrate from a supply unit or from the supply unit.

Abstract: More even utilization of a printing machine, whereby a closed turnover loop that is used has the capacity to handle only a certain number of sheets. For one loading, the turnover loop is loaded as a sequence with a group Gs of a number x of sheets to be imprinted with first form printing to be loaded alternately with a group Gw of a number y of sheets to be imprinted with back side printing, and that in the loading of the turnover loop that directly follows, the sheets to be imprinted are loaded in a sequence that is conjugated with the preceding loading.

Abstract: Preparing substrates for one-sided or two-sided printing in an electrophotograpically operated digital printing apparatus, in which process substrates are fed out of a supply unit or several supply units onto a conveyor operation sequence and are transferred, preferably in the course of the conveyor operation sequence, onto a conveyor belt that runs through a printing unit, with the least possible space between successive substrates. An acceleration time related to the type of substrate stock, of which the substrate is composed, is selected for feeding a substrate from a supply unit or from the supply unit.