Scanner technology has come a long way in the last few decades. However, scanners can still produce poor-quality images, and troubleshooting to fix the problem can be time-consuming. In this article we’ll cover some common causes of poor scanner image quality and solutions to try to resolve them.
1. Check Your Scanner Settings
Before troubleshooting anything else, make sure that your scanner settings are adjusted properly. A good way to test this is by scanning a simple line drawing or solid black and white image. If the image looks blurry or distorted, then it’s likely that you need to adjust the scanner settings. Check the manual for your scanner model to find out how to do this correctly.
2. Clean the Scanner Glass
If your scanner glass is dirty, it can affect the quality of the scan. A lint-free cloth dampened with water or rubbing alcohol should be used to carefully wipe the glass clean. Make sure to check the entire surface of the glass, including the edges and corners.
3. Check Image File Size
If your scanned images appear pixelated or distorted, then the file size might be too small. When scanning an image, be sure to increase the resolution to 300 dpi or higher. This will result in a larger file size, but it will also create a higher-quality image.
4. Sharpen the Image
If your scanned images look fuzzy or out of focus, you can try to sharpen the image using photo-editing software. Most programs will have an “Unsharp Mask” tool that you can use to increase clarity. Experiment with different levels to find the best setting for your particular image.
5. Check for Paper Dust
Another common cause of poor image quality is paper dust. This will appear as tiny specks on the scan and can cause the image to look grainy. To remove paper dust, use compressed air to blow the dust away from the scanner plate. If the dust particles are dry, you can also use a lint-free cloth to gently wipe them away.
6. Use the Calibration Sheet
Most scanners come with a calibration sheet which can be used to help obtain better image quality. Place the sheet inside the scanner and run the calibration process according to the instructions provided in the scanner’s manual. This should help improve the overall image quality.
7. Update the Scanner Drivers
Sometimes poor image quality is caused by outdated scanner drivers. To correct this, open the Device Manager on your computer and look for the scanner. Right-click on the device and select “Update Drivers”. Choose the most recent available version and follow the installation instructions.
8. Clean the Scanner Rollers
If your scanner’s rollers are dirty, this can cause streaks or bands to appear in the scanned images. To clean the rollers, you’ll need to open up the scanner case and locate the rollers. Use a damp cloth to wipe away any dust or debris.
These are some of the most common causes of poor scanner image quality. If none of the above steps work, then you may want to contact the manufacturer for support. They may be able to provide additional troubleshooting tips or suggest a more advanced solution.