How can I adjust the adf feeder of my scanner when it always moves to the middle of the page bevore it starts to scan?

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I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

There are two possible fixes.

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The following is provided by courtesy of Lexmark:
Problem Vertical lines; Auto document feeder scan anomaly; ADF scanning problem; Scan issue; Scanner issue; Visible line; Streaks show on page; solid line down the page; Top to bottom line; Smudge runs down the page; Opaque line; Broken line; Bar all the way down the page Solution Overview

This article provides the self-diagnostic steps necessary to evaluate top-to-bottom streaks that appear when copying or scanning.

Important! This is seldom a scanner hardware failure.

The main reason for this anomaly is debris or marks on the scanner glass that is used for Auto document feeder (ADF) page scans.

Printed or Scanned Page Illustration

Who should consider this article?

Any user of an MFP or All-In-One printer experiencing the following symptoms:

• -Vertical lines only when using the Autodocument Feeder (ADF).
• -Observed with any type of scan job (e-mail, ftp, solutions, fax).
• -However, normal expected output when the page is scanned from the scanner flatbed.

ADF scan behavior

Think of it this way:

• -The page is pulled from the ADF.
• -The moving page slides across an ADF-designated portion of glass.
• -The image sensor, which is located under the glass, reads and interprets the moving page's contents.
• -Contamination on this ADF glass is seen by the image sensor for the entire length of the page.
• -The image processor interprets the image sensor's repeated capture of this contamination as a vertical solid line.
• -Any ADF scan function now exhibits a vertical line.

Suggested Diagnosis and Fix

Step Action 1 Locate the portion of the glass designated for ADF scans.
HINT: The glass location differs by model. This area is often separate from the scanner flatbed. Please reference User's Guide for more information if you are having a difficult time locating this designated area.
2 Perform a visual inspection for any of the following recurring culprits:

• -Clear adhesive tape
• -Glue
• -Ink pen
• -Paper
• -Marker
• -White out
• -Staples
• -Environmental dust or dirt

HINT: Ink marks can be especially hard to see and almost translucent at first sight. However, the image sensor (CCD) registers them as a mark. 3 Use a clean, soft, moistened cloth to thoroughly clean and remove any marks or debris. 4 Inspect the underbelly or underside of the ADF for any marks or debris. 5 Perform another scan to see if cleaning the glass alleviated the issue. 6 Repeat the procedure if a vertical line still appears.
Remember! Printing and scanning from the scanner flatbed work fine.
7 This time, place an intentional mark on a blank sheet of paper and take note of its location. Now place that sheet of paper in the ADF and make a copy.
8 Evaluate the distance of the vertical line to the your mark. 9 Inspect that area of the glass for further debris or marks and clean as necessary.

Other Possibilities


If... Then... Vertical lines appear only when printing... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear when you lay the page on the flatbed... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear on ADF-fed printed copies, but they do not appear on scan-to-network [e-mail, FTP, folder (PC), solutions]... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support.

HI...................


HP ScanJet 4p Scanners - How to Use the Automatic Document Feeder (ADF)
Tips for Using Step 1 - Load the Paper Step 2 - Scan the Document To Scan a Single Page Tips for Using

• Remove any paper from the copyboard glass before using the ADF.
• Straighten any curls or wrinkles from documents before putting them on the document tray. If this is not possible, do not scan these documents using the ADF. Instead, use the copyboard glass or make a photocopy of the documents and scan the photocopies.
• Remove staples, paper clips, and any other materials from documents.
• Avoid documents with tears, perforations, or punch holes.
• Do not use the ADF to scan sheets of uncommon paper or other media, such as the following: - transparencies - gummed-backed paper - magazine pages - lightweight ("onionskin") carbons
• For paper smaller than 5 inches (127 mm) by 7 inches (178 mm) or larger than 14 inches (356 mm) by 8.5 inches (216 mm), use the scanner glass instead of the ADF. Paper smaller than the minimum size may cause a paper jam.
• For paper lighter than 16 lb bond (60 g/m sq) or heavier than 32 lb bond (120 g/m sq), use the scanner glass instead of the ADF.
• Before scanning, always push the front of the ADF downward to the scanner to ensure that the magnetic latches are engaged.

Step 1 - Load the Paper Besides the instructions below, quick reference decals on the input tray and access hatch show the order of steps for paper loading.

1. Turn on the scanner.
2. Ensure the scanner's scanner glass is free of paper.
3. Turn the green paper load lever into an upright and open position. Refer to decal number 1 located on the ADF access hatch.
4. Put the top end of the paper stack face up on the input tray. Refer to decal number 2 and pointer arrows on the ADF input tray.
5. Push the paper stack up against the green document guide and slide it right against the green registration stop, which is in the middle of the paper load window.
6. Turn the green paper load lever 45 degrees into the closed position. This will secure the paper stack. Refer to decal number 3 on the ADF access hatch. The ADF is now loaded and ready for scanning.

Step 2 - Scan the Document The ADF works with many software packages that are compatible with the HP ScanJet color scanners. To scan a document, refer to the user's manual of the software package being used. To Scan a Single Page To scan a single page while the ADF is installed on the scanner, do the following.

1. Remove any pages from the ADF input tray.
2. Raise the ADF.
3. Place the page on the scanner's copyboard glass.
4. Lower the ADF all the way and do the scan.

• LINK OF THE USER MANUAL IS GIVEN BELOW.............

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=120&prodSeriesId=25293&prodTypeId=15179&objectID=bps01187

• LINK OF THE DRIVER IS GIVEN BELOW................

http://h20000.www2.hp.com/bizsupport/TechSupport/ProductList.jsp?lang=en&cc=us&taskId=135&prodTypeId=15179&prodSeriesId=25293

Hi

If you have a Top feeder on the scanner, you can scan mutiple pages. Change the setting of the scanned file to pdf file (not JPEG) by going to the scanner icon and change the type of file you want to scan. Scan it as PDF FILE and then it will scan multiple pages. Regards

Load the item to scan You can scan from the scanner glass or from the ADF (Automatic Document Feeder) tray, if your product has one. Make sure that the product is connected to the computer. Turn the product on. Load the picture or document: Scanner glass : Place the item with the print side down on the scanner glass, and then position it according to the engraved guides around the glass (usually on the right-front corner or the left-front corner). Close the scanner lid. ADF : Place the item into the document feeder tray. The printed side faces up and the top edge goes into the tray first. Adjust the width guides to fit the item. CAUTION:Do not load photos in the ADF. Use the scanner glass instead to prevent damage to photos. Use HP Scan to start a scan Use HP Scan to scan items and edit them to adjust resolution or color, crop, remove red eye, etc. To scan a picture or document, follow these steps: Open the HP Scan program in the Hewlett-Packard folder. From the Scan Profiles screen, click either Pictures ( ) or Documents ( ) . Click Profile Settings , and then adjust any settings in the Capture , Adjust , and Page Options (for documents) or Enhance (for pictures) tabs as appropriate. If you want to save these settings as a custom scan profile to use in the future, follow these steps: Click the drop-down list to the left of Profile Settings , and then click Duplicate Selected Profile . Type a name for the profile in the text box under the profile icon. The new profile saves under Custom Profiles. Click Scan . Make any desired changes to the scan preview by using the icons available in the toolbar and the Adjust window. NOTE: You can use + and ? buttons in the Bottom bar to add or delete pages in the OUTPUT list. You can reorder pages by dragging them to new positions in the Sidebar. Select a destination from the Toolbar: If you opened HP Scan from other software, and want to send the scan to that software, click Return . If you are ready to save, print, or send the scan to a specific destination, click Save , Print , or Send . NOTE: If you are saving the file, make sure to select the file format that you want.

If you are receiving an Error Code 103 or a Paper Jam error, but there are no pages in the ADF (Automatic Document Feeder), follow the steps below:

1. Close the scanning application (such as PaperPort)
2. Turn off the scanner and the computer
3. If you have a combination ADF with a Flatbed scanner, unplug the ADF cable from the base of the scanner
4. Plug the ADF cable back in
5. Turn on the scanner power
6. Turn on the computer
7. Try scanning again

For a Paper Jam or Error Code 103, make sure that the ADF cable in the rear is connected to the scanner base. Check the flatbed to make sure that it is clear. A page incorrectly placed on the flatbed may interfere with a page feeding through the ADF.

If your scanner stops scanning due to a paper jam in the Automatic Document Feeder (ADF), a warning dialog box appears after a few moments.

To clear a paper jam:

1. Open the Automatic Document Feeder cover.
2. Remove the jammed paper and close the cover.

If you are receiving a paper jam error, or if the scanner is running continuously, check to make sure the paper sensor arm is not stuck down.

1. Open the Automatic Document Feeder cover.
2. Look for the small black plastic arm
3. When you press on this arm, it should move freely up and down
4. If the arm is stuck down, please contact Technical Support for troubleshooting options
5. Close the ADF cover.

Actually a very common problem. Try the following:
1. Power down then re-power up the scanner.
2. Try slightly moving scanner. Sometimes a small change works to fix.
3. Change one of your scan setting to flatbed scan (not adf). Do a test scan under this setting. This will usually kick start scanner unit to unlock.
4. Last resort, by does also work...give it a medium slap on the side, sometimes unjams the scanner light.
5. Super last resort, power down over night, it almost always works the next day. (could be that lock up is heat related to scan lamp, dont know but just a guess).
Excellent scanner, so worth the effort to try these fixes.

The correct answer is to clean or replace the mylar sheet on the bottom of the adf

It is not in the glass. More than likely it is in the rollers of the ADF feeder. If you open the cover of the ADF feeder you can see there are 3 screws (! is found under another small cover furthest to the back of the machine. Once these three screws are removed you can left the entire ADF feeder from the unit. You will then be able to clean all the rollers. Do not use alcohol as this will dry our your rollers and cause them to eventually crack. Just use soap and water to clean the rollers. Then reinstall the ADF feeder assembly back on the machine.

Loading originals to scan
Use these instructions to load originals into your device for scanning. For the best quality
scans, use the flatbed scanner. See Selecting media for the automatic document feeder
(ADF) for guidelines on choosing original documents for scanning.
Loading originals onto the flatbed scanner
1. Make sure that the automatic document feeder (ADF) input tray is free of media.
2. Lift the flatbed scanner lid.
3. Place the original document face-down on the flatbed scanner with the top, left corner of
the document at the lower-right corner of the glass.
4. Gently close the lid.
5. The document is ready to be scanned.
CAUTION To prevent damaging the device, do not allow the scanner lid to fall onto the flatbed scanner
surface. Always close the scanner lid when the device is not in use.
Loading originals into the automatic document feeder (ADF)
input tray
Note The ADF capacity is up to 50 sheets of 75 g/m2 (20 lb) media (depending on the thickness of
the media), or fewer sheets if the stack fills the ADF.
The minimum size for media in the ADF is 127 by 127 mm (5 by 5 inches). For smaller sizes
use the flatbed scanner. The maximum size for media in the ADF is 215.9 by 381 mm (8.5 by
15 inches).
1. Make sure that the flatbed scanner contains no media.
2. Close the flatbed scanner cover and put the top end of the stack of originals into the ADF
input tray, with the media stack face-up and the first page to be scanned on top of the
stack.
3. Slide the stack into the ADF input tray until it does not move any farther.
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