Xerox Corporation

Peter T Palamar

Thomas I Yeh

There is provided an image data shifting system for a document processing system including a scanning device for reading a document including one or more hardcopy pages and converting the hardcopy pages to corresponding electronic pages with each electronic page being represented by image data. Each hardcopy page is scanned as a series of scanlines and the scanner generates a signal prior to scanning each scanline. Each scanline read by the scanner is stored in memory as image data representative of one of the electronic pages. The image shifting system includes a detector for detecting a first signal generated by the scanner and a second signal generated by the scanner. The image shifting system further includes a write control system for causing a plurality of fill pixels to be written consecutively into the memory, in response to detecting the first signal, so that upon subsequently writing image data corresponding with a portion of one of the electronic pages into the memory, in response to detecting the second signal, the presence of the consecutively written fill pixels causes the image data corresponding with the portion to be shifted relative to a position that the image data corresponding with the portion originally possessed in the one of the electronic pages.

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Webster, NY, United States of America

Peter T Palamar