COMPUTER FUNDAMENTALS

COMPUTER HARDWARE

OUTPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statement refers to laser printer.
A
Produces colour photo-lab quality pictures
B
Used a laser beam and powdered ink to transfer images onto paper.
C
forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.
D
A sophisticated printers used to produce high-quality drawings such as graphs, maps, engineering drawings
Explanation: 

Detailed explanation-1: -Powdered ink (toner) particles are then electrostatically attracted to the charged areas of the drum that have not been laser-beamed. The drum then transfers the image onto paper which is passed through the machine by direct contact.

Detailed explanation-2: -A printer that uses laser and dry ink to print the information onto paper is called laser printer. A printer that uses wet ink and nozzle assembly to produce the output onto paper is called the inkjet printer. A laser printer uses dry ink powder (called tonner).

Detailed explanation-3: -Laser Printer: Laser printers make use of light or a focused beam for transferring the text and images on the paper. Inside the laser printer, a cylindrical drum is present known as Photoreceptor on which laser beams are fired. This is done as the paper passes through the printer.

There is 1 question to complete.