I found the following information on the HP web site, under their support forum.
Clean the automatic document feeder (ADF)
If the product is not already off, press the Power button to turn off the product, and disconnect the power cord from the product.
Remove all originals from the document feeder tray.
Open the ADF cover.
Lightly dampen a clean, soft, lint-free cloth with distilled water, and then squeeze any excess liquid from the cloth.
Use the damp cloth to wipe any residue off the rollers and separator pad.
NOTE: If the residue does not come off using distilled water, try using isopropyl (rubbing) alcohol.
Close the ADF cover.
Step 2: Clean the glass strip in the ADF
Open the ADF cover, and lift the ADF mechanism.
Lightly dampen a clean, soft, lint-free cloth with a mild glass cleaner.
Gently clean the glass strip inside the ADF, and then thoroughly dry it to prevent spotting.
Lower the ADF mechanism, and close the ADF cover
Close the scanner lid, reconnect the power cord to the product, and then press the Power button to turn on the product
I'm sorry about my previous answer, I realize you already cleaned your ADF. According to the HP website if cleaning doesnt help, you may need to clean more carefully, as a line can be caused by even a SPECK of dust. Here is a recommendation:
If you lift the ADF top cover to view the flatbed glass- there is a thin glass strip to the left of the flatbed scanner glass that is used for the ADF copy path.
Try cleaning this left hand strip of glass and try an ADF copy again.
You can also line up a copy with the vertical line defect on it with the thin glass strip to see if you can pinpoint where the dirt speck may be.
×
TRy cleaning the area like this video shows
Lift up the automatic document feeder. The feeder makes up the top half of printer, and it can be opened like the hood of a car. Lift the sides of it slowly. This exposes the printer mechanism and ink cartridges. Pull the jammed paper up and out of the printer mechanism with both hands. Pull it gently to ensure you don't damage any components.
612 views
Usually answered in minutes!
×