Buffer device with a reserve buffer to accommodate a printing substrate web supplied with varying speed in an electrographic print device

摘要

In an electrographic printing device, a printed printing substrate web is supplied to post-processing machines with irregular speed. In order to achieve that the post-processing machines receive the printing substrate web with a continuous speed, a reserve buffer is introduced in which based on sensor control, a loop of the printing substrate web is formed such that, in each operating mode of the printing device, the loop fluctuates around a desired position, with the result that sufficient printing substrate web is always contained in the reserve buffer.