Skew adjustment for optical writer in a document printer/copier

This invention relates to the field of document printing/copying. More particularly, it relates to improvements in apparatus for precisely positioning an electro-optical printhead or "optical writer," e.g. a linear array of light-emitting diodes, relative to a reusable image-recording drum...

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Bibliographic Details
Main Authors Cooper, Allison S, Bovenzi, Robert A, Buch, Donald C, Peffer, Robert M, Tam, Paul H, Ulreich, Jeffrey R
Format Patent
LanguageEnglish
Published 28.05.2002
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Summary:This invention relates to the field of document printing/copying. More particularly, it relates to improvements in apparatus for precisely positioning an electro-optical printhead or "optical writer," e.g. a linear array of light-emitting diodes, relative to a reusable image-recording drum in a document printer/copier, that is, an electrophotographic printer and/or copier, so that a line of picture elements (pixels) can be imaged on the drum surface at a desired image location. An electrophotographic printer/copier comprises a photoconductive drum assembly and an optical writer for projecting a rectilinear line of image information onto the drum's photoconductive surface. Both subsystems share the same pair of mechanical fiducials for precisely positioning these subsystems in the printer frame. According to the invention, the optical writer is movably mounted on the fiducials to adjust the skew of an image line projected onto the drum.