The computer printer produces a hard copy
(permanent human-readable text and/or graphics) of documents stored in
electronic form on paper or transparencies. Of the several types of
printers currently in use, we will concern ourselves with those most
commonly used at home or in small business. These are the
inkjet printer, the laser printer, and the multi-function printer
(printer, scanner, and fax). With each of these printers you
must understand that the speed and resolution affect the
price. The speed is measured in pages per minute (ppm) or
characters per minute (cpm). The resolution is measured in
dots per inch (dpi). It is important for you to think how you
are going to use your computer printer. Will you print one
page a day, or ten, or more? Will you print text or
graphics? Will you print photographs? Do you need a
scanner or fax machine? These considerations will help you in
deciding which printer you should select.
inkjet printer is the most
popular printer nowadays, it uses liquid ink, which is sprayed on paper
forming characters and images. It is good for both color and
black and white printing, and has good speed. This printer
can be used for text or graphics, because of its excellent
resolution. It is ideal for home or small office where
printing demands are not very great.
laser printer is more expensive,
and is better suited for printing a greater number of pages per
month. This printer uses powdered ink and a xerographic
process to create images on paper. A color laser printer is
more expensive then a monochrome printer. It is well suited
for home or office, and can be used as a network printer.
multi-function printer can house
either an inkjet or a laser printer while it also houses a flatbed
and a fax machine. This makes a powerful combination
allowing you to fax original documents, as well as computer generated
data. It also gives you a color copier using the scanner and
printer. The scanner allows you to input text and graphics
into the computer, where it can convert textual data to alphanumeric
data with OCR (Optical Character Recognition) software.
USB port which offers higher
data transfer rate, better compatibility, and hot-swappablity; has
become the standard and has replaced the LPT port. Currently
almost all printers come with a USB port and some even feature
PictBridge (a technology based on the USB interface). You can connect a
PictBridge-enabled digital camera to a PictBridge-enabled
printer. Other ports may also be available on certain
printers for specific applications, such as network ports (RJ-45) and
the fax port (RJ-11).
Now that you have a better understanding of printers,
how they work and can meet your needs. This is your chance to use the
online computer store to enhance your knowledge and allow you to
evaluate each computer
printer. You have the chance to look at over 100 different printers,
read the specs, and make your decision.
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