A4 scanners as their name suggest, scan A4-sized pages and documents. These are used across businesses and homes alike. As there are many models to get out of the device and budget to help them select the right one for their needs.
Handy A4 scanners
A4 scanners capture images from A4-sized images and documents; these are then used for editing, printing, emailing and more. A4 scanners come as hand held or flatbed and can scan in colour or black and white. Images can be scanned in low or high resolution. This feature should be a strong point of consideration for the buyer: if the scanner will be used in an office environment for example to scan high end photos and images, a higher resolution will be needed. Scanners come with image or photo editing software, like Adobe Photoshop to help you crop, resize and modify the scanned images. The device is connected to the computer via an interface called Small Computer System Interface (SCSI) or USB ports and parallel ports. Buyers should note that parallel ports are slower than USB ports and SCSI. Some of the best manufacturers of A4 scanners include HP, Epson, and Relisys.
The two types available
The widely used A4 scanners come in two categories: flatbed and handheld. Flatbed scanners which are commonly used in offices and homes, consist of a glass plane on which the A4 sheets are placed and the scanning light under it moves along the document and scans the image through CCD sensors. The second type is the handheld scanner, ideal for people on the move. These scanners work by running them over the document manually.
Features and considerations
The first factor to consider before purchasing a new A4 scanner is the sensor. More powerful sensors will provide better quality end results. This is important when scanning photo, images and other graphics. As mentioned earlier, resolution is another factor. Again aim for a higher resolution if you are after high quality scanning. If you have decided on a flatbed scanner, it is worth checking its compatibility with your computer system to make sure the two devices can work together correctly.