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Note: From May 1, 2024, the HP Scan and Capture app will no longer be available (retired) in the Microsoft Store and HP will not release any further app updates. Alternatively, you can download HP Smart from the Microsoft Store. For more information on how to set up your printer using the HP Smart app, go to HP printer setup (HP Smart app).
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HP Recommended
HP ENVY 6055e All-in-One Printer

While testing the resolution and quality of my HP Envy 6055e scanner I've noticed JPEG block artifacts and ringing/sharpening artifacts on lossless 1,200 dpi (PNG/BMP/TIF) Scan's.  The artifacts appear even on blank sections of the scanned paper.  Firmware is up to date. 

 

Happens on Windows 10/11, iOS and using HP Smart.  -  I still need to try the EWS Scan and MacOS, but I wouldn't expect any different quality if the printers firmware is doing the compressing*.

 

*It appears the printer sends the scanned file compressed (to whatever device/app requests it).  The JPG quality level isn't even that high... at least increase it to 100% HP...

 

[Zoomed 1200 dpi PNG scan attached.  Click for full size.]

1200dpi_Block.png

 

-Quad5Ny

1 REPLY 1
HP Recommended

Hi @uiphigb087y3gtr,

 

Welcome to HP Support Community.  


Thank you for posting your query, I will be glad to help you.

 

JPEG blocking and ringing artifacts typically occur due to compression, which can result in a loss of image quality. However, if you are experiencing these artifacts on a lossless 1200 dpi scan in PNG format, it's possible that the issue is related to the scanning process itself.

 

Here are a few things you can try to improve the quality of your scans.

 

  • Clean the scanner glass: Dust and debris on the scanner glass can cause artifacts in your scans. Use a soft, lint-free cloth and a gentle cleaner (such as isopropyl alcohol) to clean the glass before scanning.
  • Check the scanner settings: Make sure that the scanner is set to scan at 1200 dpi and that the color settings are appropriate for the document you are scanning.
  • Adjust the image settings: Many scanning software applications have built-in image adjustment tools that can help improve the quality of your scans. Look for settings that can reduce artifacts like noise reduction, edge enhancement, and sharpening.
  • Try a different file format: Although PNG is a lossless file format, it may not be the best choice for all types of images. Try scanning in a different format (such as TIFF or RAW) to see if the artifacts are reduced.
  • Consider a different scanner: If you've tried all of the above and are still experiencing artifacts in your scans, it may be time to consider a different scanner. Look for a scanner that has a high optical resolution, good color depth, and minimal noise levels to ensure the best possible image quality.

 

I hope this helps. 
 

Take care and have a good day.

 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

 

Alden4
HP Support 

Raj_05
HP Support Community Moderator
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.