User's Manual

Figure 9-2 Technique for flexing the paper stack

2. Use only paper that meets HP specifications for this printer.

3. Verify that the humidity in the room is within specifications for this printer, and that paper is being

stored in unopened packages. Most reams of paper are sold in moisture-proof wrapping to keep paper

dry.

In high-humidity environments, paper at the top of the stack in the tray can absorb moisture, and it

might have a wavy or uneven appearance. If this happens, remove the top 5 to 10 sheets of paper from

the stack.

In low-humidity environments, excess static electricity can cause sheets of paper to stick together. If

this happens, remove the paper from the tray, and flex the stack as described above.

4. Use paper that is not wrinkled, folded, or damaged. If necessary, use paper from a different package.

5. Make sure the tray is not overfilled by checking the stack-height markings inside the tray. If it is

overfilled, remove the entire stack of paper from the tray, straighten the stack, and then return some of

the paper to the tray.

6. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the guides to

the appropriate indentation in the tray. The arrow on the tray guide should line up exactly with the

marking on the tray.

NOTE: Do not adjust the paper guides tightly against the paper stack. Adjust them to the indentations

or markings in the tray.

7. Make sure the printing environment is within recommended specifications.

The document feeder jams, skews, or picks up multiple sheets of paper

NOTE: This information applies to MFP printers only.

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The original might have something on it, such as staples or self-adhesive notes, that must be removed.

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Check that all rollers are in place and that the roller-access cover inside the document feeder is closed.

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Make sure that the top document-feeder cover is closed.

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The pages might not be placed correctly. Straighten the pages and adjust the paper guides to center the

stack.

138 Chapter 9 Solve problems ENWW