Question about HP DesignJet 450c InkJet Printer

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Black smudges on printed page

Printing results in dark black smudges of ink along sides of paper or within 2" of edge of paper.  This is especially noticeable when trying to print index cards.  I have tried various thicknesses of paper and cards, but seldom have clean printed copy.

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  • Anonymous Mar 30, 2014

    both edges of paper are dark

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Are you sure this is a Designjet 450 (large format printer) and not a Deskjet 450 (portable printer)? The following assumes you have wispy black streaking on the printed side of the paper. If the streaking is on the back side then post more details of the printer model and the issue.

In either case the most likely cause is a buildup of fibers on the underside of the printheads or carriage, causing wisps of black ink to be dragged on the paper when the carriage reverses direction. You can clean the printer as shown at the following (though the details will be somewhat different for the Designjet or Deskjet....).

Regards,
Bob Headrick, MS MVP Printing/Imaging

Posted on Sep 16, 2008

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