Everyone has a scanner these days. Scanner prices have dropped down, making them affordable for almost everyone with a PC. Yet, they're not the easiest things to use. How can you scan in that image of your child so you can e-mail it to friends and family all over the world ? We'll show you how in this handy tutorial.
In this article, you will learn:
- What a scanner is
- What you need to successfully scan pictures
- A quick review of image formats
- How to send those images off to loved ones
Scanners are devices that turn images on paper into information that your computer can display on your monitor. They work very similarly to the Xerox copier you've used in your office or local library -- you place the paper or photograph that you want to scan face down on the scanner's glass surface. You close the lid, and use software to tell the scanner to scan. A bright light will pass over the paper -- this light helps the scanner capture every single little dot on the page. The scanner passes this information to the scanning software on your computer, which then works with the photo-imaging software to reproduce that information into an image on your computer screen.
Every scanner works slightly differently: in this article, we're going to show you how the great majority of flatbed scanners work. Use this guide along with the manuals that came with your scanner, and you'll be well on your way to becoming a scanning expert!
What You Will Need
To complete this tutorial, you will need the following:
- Your scanner should be hooked up to your computer, and the power should be on.
- You should have installed the software that came with your scanner. This software should include a TWAIN driver (discussed below)
- You need a photo-imaging software program, which is also usually included with your scanner. If not, Windows 98 and some versions of Windows 95 have a photo-imaging program built in (see below).
- You need a photograph to scan in -- a photograph of a cute young relative always works best
Photo-imaging software
The first step is to start your photo-imaging software. These software packages usually have a name similar to "PhotoSuite" or "Photoshop" -- and this software is usually included on the CD that came with your scanner.
If you have Windows 98 or a recent copy of Windows 95, then your computer will have one of these programs built-in! It is called "Imaging for Windows", and you can find it by clicking on Start, then on Programs, then Accessories, and then choose Imaging.
Understanding TWAIN
Scanners are made by lots of different companies, and each company made their scanners to work in different ways. Photo-imaging software like "Imaging for Windows" can't possibly know how to communicate with every scanner in the world.
To remedy this communication problem, the companies that make scanners also make TWAIN software for their scanners. TWAIN software works as an intermediary between the photo-imaging software and the scanner itself. This TWAIN software also controls the scanner, telling it when to start scanning and whether it should scan in color or black and white. Once the TWAIN software has finished communicating with your scanner, it displays the captured image in your photo-editing software. You then use the photo-editing software to edit and save your new image.
Starting the TWAIN software
TWAIN software works from within the photo-imaging software you use. The command to start the TWAIN software is different in almost every photo-imaging application, but they usually fall under the File menu. For instance,
In "Imaging for Windows", you click on the File menu and choose Scan New...
In "Adobe Photoshop", you click on the File menu, then click on Import, and then select TWAIN_32...
Your scanner's TWAIN software will now pop-up on the screen. As we said before, TWAIN software is VERY different from scanner to scanner. At this point, you will need to consult your scanner's manual in order to figure out how make the scanner proceed to scan your image.
The TWAIN software will allow you to set some settings. When scanning in photos, we suggest you use the True Color (32-bit) setting and to use the 300 dpi setting. This will result in crisp, colorful images on your computer screen.
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