The scanner They are very useful tools when you need obtain a digital file on an image or document. In this way, with simple steps you can have the digitization of a piece of paper in a matter of seconds.
There are different types of scannerwhich differ by their design and function. If you want to know how they are classified, we invite you to continue reading this article.
But this is not the only thing that we will talk about, we will also show you how it works when a document is scanned or . In addition, we will introduce you to the best manufacturers of scanner. Don’t miss out on anything.
What is a scanner and what is it for on a computer?
A scanner is a piece of hardware that is used like a computer to digitizeby means of light, documents or images. Currently you can choose for the result to be in colors or black and white.
Anyone can access the digitized files, since no special programs are needed for the computer to read this information. Its use is frequent when it is needed share paper documents with other users through a file in Pdf format.
to install ita CD or some link is required to download the software that performs the functions of the scanner. Then, you will need to plug it into the electrical current and connect it to the computer through a port USB.
What are all the types of scanners that exist and how are they different?
Many people when they hear the word scanner they immediately think of the one used in the office. It is true that this is one of the types that exist, but to delve into this peripheral we will show you the other models.
These are:
- Hand: are characterized by having a small size that can be dragged around the image you want digitize. In this way, you will be able to scan documents or any other 3D object, you only need to press the start button, cover the entire surface and keep your hand as stable as possible so that the result is optimal.
- Flatbed scanner: this type of peripheral is the best known. It has a system in which you must deposit the sheet or image with the content facing down and then lower a cover to avoid visual disturbances due to strong light. Its size can cover sheets, trade or letter.
- Rotary: this is used type of scanner for professional works that are aimed at graphic design. They are characterized by having a size much larger than the previous models and the graphic resolution that the digitized results have is of high quality.
How do scanners work to digitize documents and images?
if you want to know how scanners work to digitize images or documentscontinue reading. We show you below:
image scanning
When scan an imagethe peripheral send to computer via a wired connection an image in RGBwhich can be edited by other photo manipulation programs, such as the photoshop.
The scanner applies a certain algorithm and resolves the color depth by means of a reader scanned to offer a larger to smaller image at 24 bits. This will result in the classification in small or large images.
Later, it is sent to a default file located on the computer so that the user can work with the image digitized. The transfer rate can reach, in the most modern equipment, up to 60 megapixels per secondso the process of obtaining results is practically fast.
document scanning
For digitize a document you can do it with any scanner common, since the resolution of the files is between 150 to 300 pixels per inch. In general, they are done in black and white, but this does not imply that they cannot be done in color.
Average speed is up to 60 pages every 60 seconds, having the possibility of scanning each sheet on both sides. technology is used OCR so they can be editable in format TIFFbut they can also be in the format JPEG, PDF and PNG.
In this way, when reflects light on the document transforms it into electrical signals so that the paper is registered in the file.
How does a scanner work? Main elements of the process
The main elements that you can find in a scanner are:
PC connection
The connection with the computer is made by means of a cable, which is connected through a USB port. In this way, the information digitized travels through this cable and reaches transfer speeds higher than the 25 megapixels per second.
So when you scan documents is achieved scan up to 60 sheets in a minute. While, for the images it will depend on the quality of the scanner, but the time I work is short.
Data collected
To capture the original image a light source is emitted. This can be of type fluorescent or halogenbut can also be found xenon. through the mirrorswhich are placed at 45 degrees, is transmitted through a glass the information so that the image is captured in an element called original opaque. In this way, the filters are made RGB or CMYK to transform details that were not sharp enough.
According to the resolution that the device has, which is measured by dots per inch, and the depth that it has, having the highest number of bits this information is saved on the computer in a folder preset by the scanner program.
scan quality
Scan quality is measured in pixels per inchwhich determines the resolution of the scanner. This directly influences the size of the document that will be saved in the computer folder. within the standard peripherals resolutions can be found from 1800 dpi until 4800 dpibut the scanner most sophisticated that number can reach up to 160 thousand ppi.
Another factor that influences the quality of the images is the bits. Which means the ability of the scanner to capture as many colors as possible.
List of the best scanner manufacturers on the market that you should know
We will present below the best hardware manufacturers to digitize images and documents:
Canyon
These scanner They are characterized by having a high speed in digitization and also in the performance of the results of images and documents. In this way, the quality of the work generates a high level of acceptance and trust among users. Are compatible with digital camerasboth professional and domestic.
In addition, they have functions that allow the wireless connectivityeither with portable, handheld or flatbed scanners. If you are looking for a robust peripheral, you will be able to safely choose the document scanner, since they are ideal for intensive uses. Also, if you want a professional use with port USByou can find a wide variety of models that fit these needs.
Fujitsu
This company makes a difference in devices to digitize documents and images. It has a long history around the world and the quality of the imaging results is actually very good. are fit for domestic and professional jobs, since they have a wide variety of models. You can find portable, flatbed and handheld scanners for 3D objects.
Their prices are quite competitive., since you can have a product of excellent quality at an affordable cost. Among the most outstanding characteristics that this company has, is its line of models ScanSnap. Which combines different features with smartphones and scanners, allowing to have a very useful tool that can be taken everywhere.
Kodak
It is one of the market leaders, since its variety of models adapts to the different demands of users.. You can find peripherals for home, office and professional use, where the quality of the colors stands out greatly. If you need to have a scanner that can process more than 80 pages per minutethe model line of this provider is ideal for you.
Also, if you need retrieve documents You will be able to count on different tools that will help you with this task quickly and easily. It presents its Perfect Page function, with which you will be able to automatically align the sheet, as well as improve brightness and sharpness. In addition, you can make a edge smoothing to favor the background color, eliminating lines and cutting out all those imperfections that harm the final result.
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