|
|
Image scanner manufacturers |
|
As their name implies, image scanners are used to scan images.
The most common type is a flatbed scanner. This is a scanner where
the image or document to be scanned is laid flat and the scanning
device is rolled across it. Other scanners work in reverse, the
document is rolled through and the image scanned as it passes.
Image scanners come in all shapes and sizes, buy only what you
need.
|
|
|
|
|
|
|
Image scanner software
To get the image into a computer you need software.
The scanner usually comes with installation software which takes
care of connecting the scanner to the computer. This involves
installing the TWAIN drivers. To work on the image you can use
almost any graphics or drawing package commercially available. Often one
will be included with the scanner.
|
How
to... help and support
Now that you have a scanner, how can you best use
it?
There are a few simple guidelines to follow,
considering whether you scan for viewing or printing.
For viewing, and posting to the world wide web, 72
dpi or 96 dpi (dots per inch) is perfectly fine, as it keeps the
file small. Save as JPG interlaced, whenever possible, to help speed
up the loading of the page.
For printing purposes, a resolution of 300 or 600
dpi is best. Matching the resolution output of your
printer with the scanning
resolution is an easy way to get the best results. The new photo
image printers can print up to 1200 dpi.
There is very little reason to scan at 2400 or 4800
dpi as these files become very big and there is little else you can
do with them unless you have a high quality printer or photo setter
to print them. Need help?
|
|
