Patent ID: 7376381

Claim:
A method of printing image replacement documents, the method comprising: providing a high performance printing system capable of printing magnetic ink character recognition (MICR) documents, the printing system including a printer engine and a printer controller, the printer controller receiving page data representing printed pages from a host computer and arranging the printed pages for handling by the printer engine to print the pages, the printing system further including a paper tray for holding the blank paper prior to printing, wherein the printer engine demands that the paper size be selected from a limited set of allowable paper sizes; installing a paper guide mechanism in the paper tray, the paper guide mechanism having a configuration that operates to guide a paper size having a reduced width relative to a particular allowed paper size; and the paper guide mechanism thereby allowing the reduced width paper to be used in the paper tray, essentially without otherwise adjusting the printing system, such that the printer engine sees the paper size as the particular allowed paper size when the reduced width paper is being used for printing.