Eastman-kodak Company

Uwe Weinlich

Eckhard Bauer

Jörg Leyser

Martin Ruhk

Dieter Dobberstein

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&#x2014;into which the minimum of one transport path segment is divided&#x2014;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.

Method and device of controlling sheets in a digital printing machine

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.

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Monsheim, Germany

Uwe Weinlich