The scanned Pages of ADF not readable-pulls sheets with different speeds & streaks page...?

I have a HP Officejet Pro 8500 has more who struggled to properly perform the analyses of the ADF.  It seems that is happening WITH PDF FILES.  The ADF will get out the paper at different speeds, creating the effect below.  When it goes faster (you can hear it speed up), you get the lines; When he finds the right speed, you get what is digitization of bottom-good copy.  It seems to work correctly in photo mode, etc. - ONLY WITH PDFS.  Sometimes, it can properly analyze dozens of pages (and did very well in the past), and now he has started to do this.

I cleaned the rollers, but appear not to be the problem if it happens only with PDFs.  I cleaned the glass of 1 inch Strip, but would not be the problem either if the bottom of the page (or top or wherever it happens to go faster) has NO scratches on it).  I have looked at post after post and cannot understand it.  What could be wrong! ???

BTW, I have a Windows 7 64 bit computer that I use with it.

Thanks for any help!

I'm glad to hear your good news, and I appreciate the update.  This could be valuable information for someone else.

I'll give you a link which deals with topics of the ADF.  Click here  This will show you all the ADF areas that need to be cleaned.  A wet coffee filter is a good tool for the cleaning of the rollers.  Alcohol friction broken residue sliding in this situation, but for a regular cleaning, I would recommend distilled, filtered or bottled water.  Nice day!

Tags: HP Printers

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