A scanner provides an image that is not of good quality when the device has been incorrectly calibrated or configured, or if the media being scanned is of poor quality. Poor image quality usually means the resulting image is blurry, distorted, or discolored.
The following are potential causes of a poor image quality with a scanner:
1. Improperly adjusted hardware settings
Scanning objects with a traditional desktop scanner requires hardware settings to be adjusted according to the type of media and size of the object being scanned. Incorrect configuration of hardware settings such as resolution, image size, and color depth can result in poor image quality. Additionally, some scanners require automatic calibration depending on the content being scanned. Neglecting to properly adjust the hardware settings can lead to unsatisfactory results.
2. Low-resolution scanning
Using a low resolution setting when scanning can cause errors in the scanned image. Low resolution capturing can result in a lack of detail, fuzziness, pixelation and blurry images. To ensure good quality images it is important to scan with the highest resolution supported by the scanner.
3. Media defects
Media damage and defects can often be a source of poor image quality. This includes scratches, yellow or browning stains, rips, tears and dust spots. It is best to ensure the object or media being scanned is free from imperfections prior to scanning.
4. Low-quality scanning software
Using outdated or inadequate scanning software can be another source of poor image quality. Outdated software may not support the latest features such as high-resolution scanning, color management and automatic adjustment. The best way to ensure optimal performance is to use reliable, up-to-date scanning software.
5. Incorrect scanner calibration
A scanner must be calibrated for optimal performance, especially for high-resolution scanning. Without proper calibration, colors may appear faded, black may appear gray, or other images may appear distorted. Calibrating the scanner according to the manufacturer’s recommended settings should help improve the overall quality of the scanned images.
6. Poor quality original media
Finally, the quality of the original media can greatly impact the quality of the resulting scan. If the media is faded, torn, wrinkled or otherwise damaged, the scan will likely produce unsatisfactory results. When possible, it is best to use higher-grade media when scanning to ensure the best image quality.