Contemporary imaging technologies have become very progressive, ensuring that the quality of scanned images is maintained. However, this doesn’t mean that document image scanners are free from the probability of having functional problems that can impair the image quality.
For instance, scanners are essentially electro-mechanical devices that are susceptible to suffering from damage induced by gradual wear and tear. This kind of damage is often visible in the form of subtle changes that start appearing in the quality of images being produced. Common issues that can lead to such scanned image quality problems include:
Problems with Scanner Lamps — Scanner lamps tend to gradually degrade over a period of sustained use; they do not burn out all at once. This means the image quality starts to decline slowly until the images develop a noticeable problem, indicating there is an internal issue with the scanner. These scanner lamps tend to grow dimmer with each passing day. This causes unwanted color changes, gradually impairing the color gradient.
Failure of the CCD Element — Failure of the CCD is among the more common scanning equipment problems. The CCD is the image-sensing element in the scanner. When a CCD starts to malfunction, small specks of fuzzy print begin appearing in document images. The image problems caused by CCD failure are usually not noticeable to the human eye at first, but eventually they begin to impair image quality considerably, while also reducing OCR and barcode accuracy.
Defocused Optics — This problem can surface due to the scanner’s continuous vibrations, which may displace the scanner’s optics and create alignment issues that eventually cause resolution problems. In addition, grease, dirt, paper dust, carbon, toner vapor, and ink can gradually build up on the surface of optical components, causing image fuzziness.
Variations in Scanning Speed — There is always a risk of mechanical wear and tear in electronic components, which can cause them to drift out of adjustment. This can lead to variations in scanner resolution. Such variations may cause image fuzziness in just one part of the page or across the entire image, depending on the severity of the problem.
Challenges in Scanned Image Quality Assurance
It should be noted that while scanned image quality assurance is promised by scanning equipment providers, the problems listed above often surface without warning. Most office copiers and scanning machines are sold without maintenance contracts. Retailers typically provide meticulous preventive schedules and rigorous maintenance recommendations that are often impractical to follow.
Even with larger, more advanced scanning machines, maintenance guidance is not always clearly provided, as these machines are often sold with the promise of a “lifetime of unserviced performance.”
Scanned Image Quality Assurance Solutions
The only way to ensure that such problems don’t creep into an office scanning system is to monitor the overall scanning quality through analysis of the scanned files using dedicated diagnostic software. Such software can regularly track document quality, clearly indicating any underlying issues.
The data obtained from these programs https://www.new-york-document-scanning.com/document-scanning-software/ should be saved to create a long-term log of overall scanner performance. This scanner performance profile can be used to evaluate the durability of a particular scanner brand or to plan a rigorous maintenance program for the equipment.