Patent ID: 8500236

Claim:
A computer based method for adjusting page placement on a continuous feed duplex print engine, wherein the continuous feed duplex print engine includes: a feed system for displacing first and second sides of a continuous sheet of material in a process direction; and, at least one printhead with a plurality of ink ejectors, the method comprising: receiving from the print engine, using a processor for at least one specially programmed computer, ejector data regarding first and second defective ink ejectors from the plurality of ink ejectors, the ejector data including respective positions for the first and second defective ink ejectors with respect to a transverse direction orthogonal to the process direction; storing the ejector data in a memory element for the at least one specially programmed computer; receiving, using the processor, print data regarding first and second pages to be printed on the first and second sides, respectively, of the continuous sheet, the print data including positions, with respect to the transverse direction, for respective pixels on the first and second pages; creating, using the processor and the print data, first and second logical pages for the first and second pages, respectively; and, creating, using the processor, the first and second logical pages, and the ejector data, first and second logical sheets by positioning, in the transverse direction, the first and second logical pages within the first and second logical sheets, respectively, such that the first and second defective ink ejectors and the positions for the respective pixels on the first and second pages, respectively, are out of alignment in the process direction.