Scanner is a scanner tool, one of the input devices on the computer, is a tool that serves to duplicate objects such as photocopiers into digital form.
The scanner can duplicate the object using the light sensor built into it. Sensors contained in the scanner detect the structure, writing, and images of the object being scanned and then sent to the computer in digital form.
The function of the Scanner is clear because with this tool, we can duplicate hard-copy such as paper, papers, or photos into digital form to the computer. So when we lose a source file such as a photo or paper, we can save the photo to our computer. So when the photo is lost, or damaged, we still have a saved/copy on the computer in digital form.
Scanner is an electronic device that has a basic function as a user file multiplier to be converted and stored in digital form. As the original verb means, namely ‘to scan’ which means to scan, this tool works by scanning every part of the sheet that is input until there is no part left. The ‘raw material’ processed by the scanner is a thin sheet of visible light. After the sheet is scanned, the output obtained has the form of a digital visual file whose size and quality can be changed to achieve the quality desired by the user.
Sheet-shaped material that becomes the input of a scanner can take the form of printed images, posters, magazines or magazine sheets, newspapers and or materials that can be edited and displayed on a computer monitor screen.
The existence of scanners cannot be separated from efforts to fulfill human needs, especially those who have a lot to do with documents and files. Here are the basic functions of the scanner:
- Copy files. The initial function of the scanner is to copy important files whose existence is threatened by things that attack the physical condition of the file.
- Documentation. Some users choose a scanner when they want to document or save files that are considered important.
- File management. When it comes to physical files, the smallest risk that arises is time wasted due to difficult management. With a scanner, each file can be easily managed and categorized. When the file is needed, the digital version is ready to be retrieved at any time.
- File security. Conventional files have physical threats that are ready to attack at any time. With a scanner, the file is safer because the digital version can be a guarantee of the existence of the original version.
Types of Scanners
Technological developments succeeded in changing the original face of the scanner so that it gave birth to a number of outputs outside the form of a flatbed scanner. Here are the types of scanners circulating in the community:
- Flatbed scanner
This is the most common form of scanner found as well as the earliest, and is often found in homes or offices. The shape is compact, and is divided into two parts that can close together. The bottom is where the sheet is placed, while the top is used to cover during the scanning process. This type is old-fashioned and impractical, in the sense that it can only be used to scan one file at a time.
- Sheet-fed scanner
This type of scanner is quite expensive, and its performance is similar to the flatbed type. The difference is that the feed sheet is fed into the scanner and moves along the scanning process. This type is not suitable for books. The fit is for single sheet use only. However, this type of scanner is also often found in homes and offices.
- Integrated scanner
This type is quite widespread in use lately because it is allegedly able to produce output with the expected quality.
- Drum scanner
This type of scanner is widely used to capture images and reproduce them at high resolution levels. Such maximum results make only a few manufacturers of this type of scanner. Those who produce it argue that this is a further development of the flatbed type.
- Portable scanner
This type of scanner has also recently been widely used, especially by those who have high mobility. This portable scanner is supported by the use of batteries and memory cards. When the user performs a scan, the scanned content is directly stored in it. Once at home or office, users simply transfer it to the computer. In terms of quality, portable scanners are no less good than other types of scanners.
How Scanners Work
Scanners operate by shining a light on the document to be digitalized and then directing the reflected light to the photosensitive element in the scanner itself. In most scanners, the medium that acts as a sensor is known as a Charged Coupled Device (CCD).
During this scanning process, light-sensitive photosites move along the CCD and convert light brightness levels into electronic signals which are then converted into a digital display. So, files or documents that are inputted through the scanner can be accessed, read or stored on a computer or laptop.
That’s all for a discussion about the meaning of scanners and their functions, types and how the scanner itself works. With this scanner, we can duplicate documents or photos and store them in digital form that can be accessed using a computer device. May be useful.