Printing – Planographic – Lithographic plate making – and processes of making or using...
Reexamination Certificate
2007-03-29
2010-12-21
Yan, Ren (Department: 2854)
Printing
Planographic
Lithographic plate making, and processes of making or using...
C101S477000, C250S208100, C250S559300
Reexamination Certificate
active
07854199
ABSTRACT:
A method and apparatus for determining the alignment of printing plate (14) mounted on an imaging drum (12), and applying an image to a printing plate while maintaining registration and alignment between the image and a reference edge (15) of the printing plate include mounting the printing plate on a plate-making machine (10) and then determining the locations of at least two points on the reference edge. The locations of two or more points are used to determine a transformation that is applied to image data to yield transformed image data (27). The transformed image data is used to image the printing plate. A method and apparatus for determining the locations of the points using backlighting avoids errors encountered in illuminating from the top.
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Cummings Calvin D.
Hawes Peter
Warnes Allan
Eastman Kodak Company
Freeman Shema T
Nelson Adrian Blish
Yan Ren
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