Computer Printers

Computer printers have come down in price over the years and have increased in quality.
You can now find some excellent bargain's on the web.

This section of the site is still in the process of development and many more links will be added shortly.

Printer Types:

Inkjet printers.

Inkjet printers are probably the most popular type of printers on the market.Inkjet printers work by placing extremely small droplets of ink onto paper to create an image. If you ever look at a piece of paper that has come out of an inkjet printer, you know that:

The dots are extremely small (usually between 50 and 60 microns in diameter) The dots are positioned very precisely, with resolutions of up to 1440x720 dots per inch (dpi). The dots can have different colors combined together to create photo-quality images.

Special offers on computer printers

Laser Printers:

Laser printer work with the use of static electricity. The laser printer uses this phenomenon as a sort of "temporary glue". The main component of the printer is the photoreceptor, usually a revolving drum. The drum is given a total positive charge by the charge a wire with an electrical current running through it.

As the drum turns, the printer shines a laser beam across the surface to discharge certain areas. The laser draws the letters or images to be printed as a pattern of electrical charges "an electrostatic image".

After this the printer coats the drum with positively charged toner a fine black powder. Since this has a positive charge, the toner clings to the negative discharged areas of the drum, but not to the positively charged background.

The drum then rolls over the sheet of paper, which is moving along a belt below. Before the paper rolls under the drum, it is given a negative charge. This charge is stronger than the negative charge of the electrostatic image, so the paper can pull the toner powder away. Since it is moving at the same speed as the drum, the paper picks up the pattern exactly. To keep the paper from clinging to the drum, it is discharged after picking up the toner.

Then the last process is for the printer to pass the paper through the fuser,usually a pair of heated rollers, and as the paper passes through these rollers the loose toner powder melts, fusing with the fibers in the paper. The fuser rolls the paper to the output tray, and you have your finished page.

On the whole laser printers provide a much higher print speed than an inkjet, but quality is getting much closer.