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IME IME IME IME 10 20 18 16 12 24 14 26 28 ON-RAMP HIGHWAY FINISHER FEEDER Fig. 1. Overview of a parallel printer architecture. Multiple print engines printing concurrently offer print speed scalability and redundancy. The required large and complex media path presents novel controls challenges.Abstract-The invention of parallel cut-sheet printing system architectures could potentially revolutionize the approach to building reliable, high-speed printers. Instead of speeding up an existing printer or designing a new, higher speed printer, a printing system is built utilizing multiple print engines printing in parallel, increasing speed and reliability.To connect the multiple printers with sheet feeders and finishers large and complex high-speed media paths are necessary to route and transport the sheets through the system. These media paths require precise sheet position and velocity control in order to precisely and reliably transport a large number of sheets concurrently through the media path during parallel printing operation.A closed loop control algorithm for large media paths with independently driven transport nips has been developed and successfully implemented. The performance has been verified both in simulations and experimentally.

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