Full-fledged office work is impossible without a scanner. This computer equipment is difficult to replace, so you need to choose it carefully. There are many models in stores. Buy the scanner that best suits your needs.
Instructions
Step 1
First you need to decide on the type of scanner. Three main types can be distinguished, differing from each other in design features. Most often, a flatbed scanner is purchased for the office. Sheets or books are placed on the glass backing of the device. The original document does not move during scanning.
Step 2
The broaching scanner is not suitable for working with books. It can only scan individual sheets of paper. Outwardly, such devices resemble printers. Information from the sheet is transferred to the computer by digitizing the scanned image.
Step 3
There are also slide scanners on sale. The essence of this device is to scan film (slides) and save the image directly to a computer. Please note that some models of flatbed scanners have slide adapters. It is worth checking with the seller about the design features.
Step 4
Having decided on the type of scanner, it is worth moving on to choosing the type of device sensor. They are of two types: a contact image sensor (CIS or, if decoded, Contact Image Sensor) and a charge-coupled device (CCD or Charge-Coupled Device).
Step 5
The scanner, with the CIS sensor installed, has a fairly simple design. This technique is quite subtle and lightweight. If we talk about the price, then it is lower than that of other scanners. Among the disadvantages, we can mention the shallow depth of field. When scanning a book or a wrinkled document, the image quality may deteriorate. It becomes blurry and somewhat blurred, which creates discomfort when reading the document.
Step 6
The scanner with a CCD sensor has good color reproduction and good depth of field. Any document can be scanned on such a device, since the sensor recognizes the image and transmits it with good clarity. Professional scanning technology is based on CCD. The disadvantages of these devices include high weight, thickness and high cost.
Step 7
So, everything is simple. If quality is important to you, choose a CCD, if you want to save money, buy a scanner with a CIS sensor. Pay attention to the automatic sheet feeder. It is necessary when scanning large amounts of information. This feature is available on both flatbed and feed scanners.
Step 8
Consider whether your company would be better off purchasing a general purpose scanner. Such devices can be equipped with a slide adapter. But an adapter may not always be the best option. If you need perfect image quality, it is better to buy a slide scanner separately.
Step 9
When choosing a scanner, you need to consider the maximum sheet size with which you have to work. For professional scanning, buy a device with over 2000 DPI. A typical scanner has a resolution of 600 to 1200 DPI. Pay attention to color depth. For office work, a 24-bit device is enough.
Step 10
Check if the scanner supports the operating system installed on your computer. Modern scanners can work via a USB cable. If this point is important to you, check with the seller for the technical specifications of the device.
