The most common reason why images are not scanned correctly is because of the quality of the images. If the images are low-resolution, they will often appear blurry or pixelated in the scanned image. Additionally, if the images have a lot of contrast, such as white text on a black background, they can be difficult for scanners to capture properly and may require some tweaking of the settings.
If the images are scanned in too large a size, it can also cause problems. Scanners work best when scanning images at 300 dpi or lower. Attempting to scan at a higher resolution can result in distorted or blurred images.
Another issue that may prevent images from being scanned correctly is dust and dirt on the scanner itself. If the scanner has dust and smudges, it can detract from the quality of the image and make it difficult for the scanner to recognize it properly.
Some scanners, particularly those of the printer/scanner variety, may also suffer from an issue known as “banding”. This occurs when the scanner isn’t able to capture enough detail in the image, resulting in an inconsistent pattern of stripes or bands in the scanned image.
Finally, incorrect scanner settings may cause problems with scanning. For example, if you’re trying to scan a text document and the scanner is set to “photo” mode, the text will most likely appear distorted.
In conclusion, many issues can cause images to be scanned incorrectly. Low-resolution images, high contrast images, dust and dirt, banding, and incorrect scanner settings can all lead to distorted or unrecognizable scans. To ensure the best possible results from scanning, it’s important to start with high-quality images, set the scanner to the proper resolution, and ensure the scanner itself is free of dust and dirt.