How Scanner Works Along With Understanding Of History And Types - If you are an employee who uses computers in everyday life, of course, you already know a lot about some of the hardware in computers.
Of course, we know that if the hardware is in the computer, apart from the hardware already in the computer, there is also additional computer hardware that we commonly refer to as peripherals. Few of you of course also know the role of each hardware.
It can be said that peripherals are additional hardware devices that are connected to the computer to improve the performance of the computer.
There are several peripheral devices that we commonly use in computer use in daily activities. One of them that we use is a "scanner". Often we use a scanner to scan an image which will later be shown on a computer monitor.
Talking about scanners, in this article I will review some of the things that exist regarding scanners. To clarify, let's read the explanation below.
What is this scanner?
The scanner is an additional device on a computer that has the benefit of scanning something in the form of a photo image, or it can also be in the form of a document which will later be imported to a computer and shown through a digital monitor.
Like the original verb meaning, namely 'to scan' which means scan, this tool works by scanning each side of the sheet as input until there is no side left. The 'raw material' is processed by the scanner as a real thin archive sheet.
After the sheet is scanned, the output obtained has the form of a digital visual file whose size or quality can be changed to achieve the quality expected by the user.
If we look at it, at first glance this scanner has similarities to a photocopying machine which works by scanning something in the form of an image or document which will later be duplicated into more and more numbers.
At a certain level, the arrival of scanners succeeded in eliminating the old players in the same section, namely the photocopy machine technology which was first introduced by Xerox in 1959.
Although both have the same basic role, namely as a multiplier, photocopy machines have a large size and produce output in the form of paper whose size cannot be tricked.
At that time, scanners entered the digital world with output in the form of digital archives that could be arranged in such a way as to suit the user's wishes.
Witnessing from its similar role, will the presence of a scanner replace a photocopy machine?
Uncertain. Both have fans with unique and detailed specific needs. However, it is undeniable that there is a tendency to adopt digital technology and replace analog copying technologies such as photocopying.
Ideas like this are generally realized by combining or combining modern digital photocopiers with scanners and laser printers.
Changes in technology make integration even more amazing, which is realized by having high-speed scanners or sending archives via e-mail.
Scanner Change History
Technology. This software plays a role in recognizing the text that is on the object being scanned and interpreting it into text-shaped data.
Since the beginning of the change, scanner technology began and eventually grew to this day with increasingly advanced technology. Now scanners can be used to scan three-dimensional objects and film negatives,
There are various shapes and sizes of scanners, some the size of a folio paper, some the size of a postcard, and even the most recent one, in the form of a new pen issued by the company WizCom Technologies Inc.
The scanner has a pen size that can store up to 1,000 pages of text and transfer it to an individual computer (PC).
The scanner has a pen size it is named Quicklink. The scanner pen measures six inches long and weighs about three ounces.
Scanners that can do random work can be faster than flat scanners. The data that has been taken with the scanner can be placed directly into all computer programs that recognize ASCII text.
At this time, scanners have increasingly experienced rapid development. Many scanners are scattered in the world with various brands, one of which is:
Canon, Hewlett Packard (HP), EPSON, UMAX, Panasonic, Samsung, Fujitsu, Lexmark, and many other scanner brands are growing rapidly along with the discovery of new scanners technology.
The invention of the scanner is really related to changes in photography technology, photocopying, and optical machines. The inventor of the scanner was Robert S. Ledley who was born in New York, the United States in 1926. Until finally in 1943 the CT Scanner was born which was able to scan the entire body from head to toe.
The machine of his invention was called Automatic Computerized Transverse Axial (ACTA). So a brief history of the invention of scanners and changes in scanners from the beginning of their discovery to the present day, new scanners with different and sophisticated technologies have been discovered and developed in the world by various companies, as previously mentioned.
The presence of scanners is inseparable from efforts to fulfill human needs, especially those who are mostly related to documents and archives. Here are the basic roles of the scanner:
The scanner's initial role was to copy important archives whose existence was threatened by several things that attacked the physical state of the archive.
Some users choose a scanner when it comes to documenting or storing files that are considered important.
When it comes to physical records, therefore the least risk is wasted time due to difficult control. With a scanner, each file can be organized and categorized easily. When the archive is needed, digital versus is ready for retrieval at any time.
Conservative archives have physical terror ready to strike at any time. Because there is a scanner, that the archive is more secure because the digital version becomes the collateral for the existence of the original version.
Technological changes have succeeded in changing the original face of the scanner to produce several outputs outside the form of a flatbed scanner. Here are some types of scanners that are spread in the community:
The bottom side is the place where the sheet is placed, while the top side is used to cover the sealing process. This type is considered old-fashioned and not compact, in the sense that it can only be used to scan one file at a time.
- The price is relatively cheaper than other scanners.
- Compatible with a variety of computer operating mechanisms.
- Can scan and scan any type of paper that has a certain size.
- Save electricity and power.
- The resolution of the object is quite good.
- Can only do a scan on one side of the object.
- It's really inefficient when doing approvals from multiple objects.
- Able to do the scanning process on documents and flat objects or large paper.
- Less vibration, so the scan results do not experience distortion and vibration.
- Really suitable for getting optimal image results from a document.
- Useful for scanning fragile ancient documents.
- The physical form of the scanner tool is very large, making this tool really not compact for everyday use.
- The price of an amazing scanner is expensive and it is also difficult to get a drum scanner.
- Limitations of objects that can be scanned or scanned.
When the user makes an authorization, the content of the approval is directly placed in it. Once inside the home or office, the user simply transfers it to the computer. In terms of quality, portable scanners are no less good than other types of scanners.
However, maybe we want the old past that is in the form of negative film to be stored on the computer and we make it every time using our printer.
Nach, this scanner film is the most appropriate answer. Film scanners use the same technology as flatbed scanners, namely CCD as the eye that does the sensing, but preferably for objects that have a negative film shape.
Although this tool is the most useful tool for individual needs, the price of buying from this film scanner is expensive and maybe a little difficult to obtain.
In contrast to flatbed scanners that we can find easily anywhere. In addition, the film scanner has a limited role, namely, it can only perform the scanning process on negative film forms and not other types of documents.
Then this Film Scanner can convert and change the objects in the negative film into digital form and we put it on our computer.
The special difference between roller scanners and flatbed scanners is the system used. If the flatbed uses CCD technology as "eyes" that move in scanning the contents of the document, then the roller scanner does not move its eyes, but the document is moved.
The working steps are the same as the printer, where the document or paper is placed on the other end, then the paper will enter the scanner machine, then come out at the other end.
Roller Scanner itself consists of two other types, namely:
ADF Scanner (Automatic Document Feeder)
As a roller type scanner that is intended for the use of documents in large quantities.
This scanner has a certain place to store the document to be scanned, then automatically all the documents will be taken into the Roller Scanner machine gradually one by one.
Very efficient for use in the busiest offices, especially the administrative side, which needs to frequently document documents in digital forms.
Sheet Feed Scanner
Known as the Mobile Scanner or Portable scanner, this Sheet Feed Scanner is really compact and really easy to carry around.
In addition, this sheet feed scanner can be used simply by using the USB port on our computer, so it will definitely make it easier for us to do the scanning process anywhere and anytime.
However, this sheet feed scanner has drawbacks, namely having a price that is still quite expensive, certain spare parts need to be exchanged after frequent use, and this sheet feed scanner is also limited in terms of the size of the document to be scanned.
To find out and scan one's belongings, to scan barcodes in supermarkets and scanners to scan the contents of a document, by pointing the hand and the scanner according to the form of the existing document.
This hand scanner or hand scanner is quite easy and very compact to use and has a fairly cheap and affordable price
The 3D scanner is a scanner that records objects in real-time. He can record the curve, thickness, width, and length of a particular object. interestingly, in 3D scanners, there is 3D Laser technology
Scanners. Besides that, there is a camera and flash. Until it can be used to scan some objects that have a small size.
OCR and OMR Scanners
The OCR scanner is the next type of scanner that works by scanning a piece of paper object to turn it into text that can be tricked.
Meanwhile, for OMR scanners, it is a scanner that serves to scan for pencil marks.
Mobile barcode scanner
This scanner will scan barcodes on every home of loyal electricity consumers. Only after the barcode scan is carried out, the officer will write the electricity meter and save the loyal customer data.
Some of the components that are interpreted are some of the components on a flatbed scanner because this type of scanner is the most we encounter and the ones we often use. These elements are:
The glass base is used as a place for the image to be read.
A light source in the form of a lamp with a fairly high light intensity will produce a beam that is aimed at the image.
Reflection Light Sensor
The type commonly used for flatbed scanners is a CCD sensor (charge-coupled devices). This tool acts like an eye that will read the reflected light from the image. To direct it to the CCD, the reflected light from the image is aimed at using several mirrors and scanner lenses.
Stepper Motor and Serrated Tape
Because the data is read line by line, a stepper motor and serrated tape are needed to drive the lamp and CCD
The cover is used to prevent outside light from entering so that the data read by the CCD is really reflection data from the image read.
The scanner works by illuminating the document to be made digitally and directing the reflected light to the photosensitive component in the scanner. In most scanners, the media that acts as a sensor is known as a Charged Coupled Device (CCD).
During this tuning process, light-sensitive photosites travel as far as the CCD and convert light brightness levels into electronic signals which are then converted into digital displays. So, archives or documents that are inputted through the scanner can be reached, read, or placed on a computer or netbook.
Scanner Work Steps
The image to be scanned is placed on the surface of the scanner glass.
Before the image is scanned, the computer will determine the extent of the stepper motor carrying the light, the distance is determined by the image length and the image status on the scanner glass.
When the skinhead performs a scanning motion, it captures the reflected light on the scanned area with an accuracy of about 1/90,000 inches.
The lamp starts to glow and the stepper motor will rotate to move the lamp until it fits over the object.
The light emitted in the image will immediately be reflected in the blank or white area, of course, it will reflect more light when compared to areas that look dark or have color.
Furthermore, the reflection that has been made will be continued by several mirrors towards the scanner lens.
On reflection, the light will move towards the CCD sensor.
The CCD sensor will perform an intensive measurement of the reflected light and wavelength and convert it to an analog voltage.
The analog voltage will turn into a digital value because there is an ADC (Analog to Digital) converter.
The digital signal from the CCD sensor will be sent to the logic board and sent back to the computer in the form of digital data that has given color to some of the reflected image points.
Steps to Use Scanner
The steps for using a scanner are:
- Make sure the scanner and computer are on or connected.
- Prepare an image or document to be scanned
- Opening the scanner cover
- Place the document or image on the scanner then close it again.
- On the computer, open a data processing program (start menu-all programs-photoshop, if using Microtek open the Microtek scan wizard 5 software (start menu-all programs-Microtek-Microtek wizard 5).
- For Microtek software, click preview, then match the scan results.
- For Photoshop software, click file-import-Microtek, if using f380 all in one click file-import-f300 twain then click preview, match the scan results.
- For Microtek click scan, wait a moment then ask for info to save, but the scan results in the desired place.
- For Photoshop, when you click scan, the results will automatically appear on the Photoshop screen, you can change them and then place them.
- The scanning process is over.
Steps to Fix Scanner Problems
Although every other scanner, you can use some common systems to fix the scanner.
Uninstall the software for your scanner. If your problem appears to be software-related, you should uninstall and install the scanner software.
To do this, go to "Add/Remove Programs" on your desktop. Find the scanner program and click the "Uninstall" option. Once this is done, Re-enter the CD-ROM scanner software and follow the installation guide.
Disable start-up points in Windows. Some Windows programs can affect the scanned images created by the scanner.
Fixed this issue by going to the "Run" menu in Windows. Enter "MSConfig" to open the composition mechanism window. Specify "Selective startup" and do not check all the programs listed in the following menu.
Unplug all cables and turn off the scanner power source. To fix the strange mechanical noise from the device, turn the scanner off and reconnect the cables and power source after waiting a minute.
Install updated drivers for your scanner. Outdated drivers can cause your scanner to malfunction. Solve this problem by downloading new drivers from Web Support.
Clean your scanner glass. Dirt can build up under the scanner glass and cause it to stop working properly.
To clean the glass below, you will need to dissect the glass using a flat head screwdriver. You may need a Phillips screwdriver if it is in the screw holder on the back of the scanner glass.
Use a glasswasher and a dry cloth to remove all dust and some debris. Re-install the glass using a Phillips screwdriver.
Thus the information regarding the scanner, starting from understanding, history, type, role, to how it works. Hopefully, this article can add discourse and knowledge for those who read it.