Scanner oversensitive to paper texture

[DaveG74]

I'm looking to resolve a very common issue with scanning certain documents, where the scanner seems to be slightly oversensitive to specific paper textures. This is more particular to card stock, business cards, brochures, etc.

On said cardstock (for example), the scanner seems to pick up the grainy texture just as "efficiently" as well as the document itself. I know that Paint Shop Pro, among other software, has features to digitally fix this. But I am not that well-versed to determine how, so after the scan is done, I typically use Soften/Soften More as my Go-To.

On a most recent scan (for a brochure), I improvised a bit to resolve the problem. I removed the glass from a picture frame and placed it on the scanning glass and scanned my document through that. As desired, this technique seemed to yield a smoother result without picking up the grainy paper texture so visibly. However, is there a better way without using this "hack" as needed?

I would like to learn the most efficient way of scanning cardstock (or the like) for a more natural result and not such a high sensitivity to the document's texture.
Any insight or education to this dilemma is appreciated. Thanks!

[Jean-Luc]

You should have some settings to tweak in the scanner options.
Which scanner do you use ?

[DaveG74]

I am using a Canon Pixma MG7520 all in one.

[Jean-Luc]

I am using a Canon Pixma MG7520 all in one.

Thanks.
The manual is installed on your PC or is available on the CD.
I think there is some explanation about the scanner settings.

And could you send us a sample image of the problem you encounter? It may help to SEE the issue...

[Jean-Luc]

You may try the Advanced scan settings :
http://ugp01.c-ij.com/ij/webmanual/Scan ... u-110.html

[flagpole]

so if you bring up the histogram adjustment it should look something like this:

So that is a document with a bit of black text but mostly some very light greys from the texture of the paper and some stuff coming through from the back.

You need to adjust it by moving the little white triangle to the left, as far as the left hand edge of the right side of the distribution.

Once you've done a few you'll probably find that they're probably all the same and require the same adjustment.

It part of the way the auto exposure works on the scanner i'm afraid. what we think of as white rarely is.

[roberts-end]

There are two common scanner technologies: CIS (also known as LIDE) and CCD. The former are generally physically thin devices or integrated with print/fax/scan. They are also cheaper and suffer from a very limited depth of focus and show creases and paper texture.

In contrast the CDD scanners have much better depth of focus, and are less sensitive to texture and creases in the paper. They also cost a bit more. They are better suited for critical work. Take a look at the Epson Perfection V370 and see if you can find a dealer who will scan a test document for you.

https://www.epson.co.uk/viewcon/corpora ... /index/109


Once you have a decent scan you can, of course, use the above tricks to tweak the end result.
You might also consider photographing with a camera where you have more control of lighting. Try outside on an overcast day (no hard shadows), or indoors by a north facing window.