During printing, the product stops feeding pages, and the error message 'Paper Jam. Clear jam, and then press OK' displays on the product control panel. The Power light (
) on the product control panel might also blink fast.

Prevent paper jams
The following recommendations can help prevent recurring paper jams in your HP product:
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Do not put any objects (such as paper clips, coins, or rubber bands) on top of the HP product that could potentially fall inside the input tray.
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Before loading paper in the tray, hold the stack of paper, and then tap the bottom edge on a flat surface so that the stack is even on all sides.
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Make sure that the width adjusters on the tray are correctly positioned before inserting paper into the product.
caution:
Do not force paper into the tray. -
Do not overload the tray with paper.
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Only add paper to the tray when the product is not printing.
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Make sure that the HP product supports the paper type. See the documentation that came with the HP product for more information.
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Do not print on paper with paper clips or staples attached.
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Do not use paper that is bent, torn, dusty, damp, wrinkled, curled, or paper that does not lie flat.
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Use only one type of paper at a time. Do not mix different types, weights, or sizes of paper.
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Do not use paper that is too thin, too thick, or too glossy for the product.
Causes
The following factors can cause paper jams:
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Foreign objects (such as paper clips, coins, or rubber bands) might have fallen into the input tray.
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Paper loaded incorrectly in the paper tray.
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Damaged or dirty paper rollers.
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Torn, wrinkled, or damp paper loaded in the paper tray.
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The access door (on the rear or underside of the product) might not be closed securely.
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Paper was added to a stack already in the tray while the HP product was printing.
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The tray contains more than one type of paper.
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The paper is jammed inside the HP product where you cannot see it.
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An obstruction is blocking the paper path.
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Torn pieces of paper from a previous jam are stuck in the product.
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The tray is too full.
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If printing on an envelope, the edges of the envelope are bent.