Scanners types , Digital cameras and camcoders
Drum scanners, The flatbed scanners, Sheet fed Scanners, 3D Object Scanning System, Film (Photo) scanners, Portable/Handheld scanners, Barcode scanners (readers), Credit card readers, Wireless credit card readers, Digital Cameras, Digital camcoders
Drum
Scanners - A drum scanner is usually found in a professional printing
business, because they provide the highest level of image quality available.
They are used with a cylindrical drum that rotates past sensing elements to
complete scanning jobs. They are more on the expensive side and they are much
more advanced than typical desktop scanning.
The flatbed scanner
is the most popular type, and the flat desktop design gives you a lot of scanning area.
Items to be scanned are placed on a glass plate, like a copier, so you can scan
multiple items of various shape and sizes, with the largest paper size being
either a letter or legal page, depending on the model. Some models even include
a transparency adapter to scan slides, x-rays or other transparent originals.
Flatbed scanners are highly recommended, if you are going to scan a good number
of graphics or separate pieces of text. Flatbed scanners are available with a
SCSI, Parallel Port or USB Port Connector.
Sheet fed Scanner is fed a piece of paper into it, much like a fax machine. Sheet fed scanners
can only handle one piece of paper at a time, although some models come with
built-in automatic document feeder (ADF) to scan multiple pages unattended.
LIGHTSHOW 3D Object Scanning System
allows to use flatbed scanner to scan 3D
objects, paper documents, photographs, transparencies,
positives, negatives, and x-rays. The LIGHTSHOW 3D Object Scanning System uses
the high resolution capabilities of existing flatbed scanner to create sharp,
crisp, accurate details of 3D objects (www.3dscanner.com)
Film (Photo) scanners used for scanning of photo pictures, slides and input
images to computer.
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Portable/Handheld
scanners: Thanks to digital-imaging technology, you can have now the smallest and
most portable sheet-fed color scanning devices. USB port connection
feature allows to have one-cable hook up to a notebook or desktop PC.
Barcode scanner
(reader) is an electronic device for reading printed barcodes. It consists
of a light source, a lens and a light sensor translating optical impulses into
electrical ones. Additionally, nearly all barcode scanners contain decoder
circuitry analyzing the barcode's image data provided by the sensor and sending
the barcode's content to the scanner's output port.
Credit
card readers. A basic credit card reader includes a magnetic stripe
reader, a keypad to enter prices and other information, and a small display. It
may have a printer built in, or attached as a separate unit. They're generally
reliable machines and should last for years with minimal care - just make sure
you clean out the printer now and again.
Credit card readers have different types of displays: obviously, larger displays let you see more information at once. Displays are usually measured line lines and columns: an 8 x 20 display has 8 lines of text, 20 columns wide. Getting a backlit display lets you use the reader even in low light conditions and is probably a good idea - backlights are standard on most new readers in any case.
Keypads vary in size and number of keys. More keys typically give you the option to assign commonly-used functions to their own key; larger keypads can improve ease of use.
Wireless credit card readers. A wireless credit card scanner provides a significant advantage for some
businesses. For example, taxi drivers, seasonal businesses with temporary
locations, and large lot businesses can all greatly increase efficiency by
accepting credit cards wirelessly. However, for most businesses, a wireless
credit card scanner is a needless expense: if it's never going to leave the
counter, the wires pose no problem.Wireless credit card readers all have printers built-in - your employees
won't want to carry around two separate pieces of equipment. Important factors
to consider when evaluating wireless terminals include battery life, range,
weight, and shock-resistance - any terminal that gets carried around is going to
be dropped occasionally.
Digital
Cameras. Digital cameras are a versatile tool that can produce superior
quality images. Though slower and more difficult to use than user types of
scanners, digital cameras are adaptable to a wide array of documents and
objects. Most fragile materials can be safely captured, though the need to
provide external lighting means. Digital camera technology continues to improve,
helped along by the growing consumer market.
Digital
camcoder. Now, for the same amount of money, you can
buy high-definition video cameras that let you shoot
movies with gorgeous color and clarity, save footage to
flash memory or hard-disk drives, and upload to the Web
with ease. Whether you want to snag clips of your
playful spaniel or create the next independent
masterpiece, we'll direct you to a camcorder that meets
your needs.
Thermal
Imaging Camera. Now you can apply the technology
used by NASA to detect minor variations in temperature
that may indicate electrical or moisture problems.
Detect hot spots, locate water damage sources, find
missing insulation and leaky air ducts. Easy to use,
this unit offers 0.1 degree C sensitivity with an
accuracy of 2%. Just point toward an object, and
crystal-clear images display on the 2.8-inch (80x80
pixels) high-resolution display. Covers temperature
range of 32 degree F to 484 degree F and stores up to
5,000 images.