Flatbed Document Scanners
These are the oldest model of scanners there is and it is the traditional one. You might remember those old copying machines? They operate the same way as a flatbed document scanner since you will have a glass surface where you will place the documens you want to scan, and then put a lid on it and let the machine scan it.
The lid is important to close because it has a shiny white surface that is going to make it possible for the scanner to determine where the document ends - you will get black borders for the scan if you don't do this. The bright light of the flatbed scanner makes it possible for it to analyze the reflecting light and especially the amount of it. Based on the data that it receives using the optical sensors, it is going to build an image.
These scanners are the most reliable ones out there since they are set to take duplicates of documents that are of a specific size, and the are not going to lose the proportions because of this. These are meant for the home office, or for any office in the first place, since they are normally quite fast and reliable, and do provide good scans. Someone looking for a portable model, the flatbed document scanners might not be the best option because they are going be at least the size of the document that you will scan, and they will be a lot thicker.
Basically they work the same as a portable scanner but the scanner is fixed on rails beneath the glass. There is a small servo engine that will run at constant speed and make it easy for the machine to determine the size and proportions of the document or picture you are scanning. Since it is all automated and it does not need to determine the speed of your hand movement, it is more accurate than a pen scanner and faster also. Cheap flatbed document scanners can be found easily since there are so many manufacturers that are competing in the scanner markets.
The most significant benefits that you will get from using something like this is that you can pick anything you like - even a thick document like a book - and scan it as a JPG, GIF or a PDF file and have it sent through your internet connection to all parts of the world instantly! If you use a text recognition tool you will be able to make text documents with it.
If you are still wondering where you can find flatbed document scanners then I'll give you the best answer for this. You can find cheap flatbed document scanners from the internet, and get free shipping on them also. Since many people don't want to order online because they don't like the delivery times, I'll assure you that you will normally get your device in a matter of days.