HP K manual Load paper or transparency film, or load originals
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HP OfficeJet K Series
4Slide the paper-width and -length adjusters in until they stop at the edges of the paper, and be sure that the paper stack lies flat in the input tray and fits under the tab of the paper-length adjuster.
5Push the input tray back in until it stops.
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Chapter 4—Load paper or transparency film, or load originals