Types of Printers (working and use).pdf, Lecture notes of Printing

Download Types of Printers (working and use).pdf and more Lecture notes Printing in PDF only on Docsity!

Printer

Printer Definition

 A printer produces

a paper copy of information generated by a computer.

“Impact Printer”

 1. These printers have a

mechanism that touches the paper to create an image. 2. Produces text and images when tiny wire pins on print head strike the ink ribbon by physically contacting the paper

Impact Non-Impact

Produces text and images when tiny wire pins on print head strike the ink ribbon by physically contacting the paper

Produces text and graphics on paper without actually striking the paper(no physically contact to paper)

Uses ink ribbon Uses ink spray

Print quality lower in some types High quality of output, capable of printing fine and smooth details Low printing speed Reasonably fast

Generally noise because of the striking activity

Low noise because there is no striking mechanism Not commonly used today Most commonly used printer today

“A typical dot matrix output”

“ Advantages/Dis-advatages of

Dot-Matrix”

 Advantages:

 (1) In-expensive.

 (2) Low per page cost.

 (3) Energy efficient.

 Dis-advantages:

 (1) Noisy

 (2) Low resolution

 (3) Limited fonts flexibility

 (4) Poor quality graphics output.

How Daisy wheel printer

works?

 In a daisy wheel printer, a hammer

presses the wheel against a ribbon which

in turn makes an ink stain on the paper in

the form of a character mounted on the

wheel extensions.

 These printers are very noisy as there

occur great movement during the printing.

Its printing speed is also very slow ,i.e.

less than 90cps.

“Ink-Jet Printer”

 It is a non-impact printer producing a high quality print. A standard Inkjet printer has a resolution of 300dpi. Newer models have further improved dpi. Inkjet printers were introduced in the later half of 1980s and are very popular owing to their extra-ordinary performance.

13

Advantages/ Dis-advantages

 Advantages:

 (1) High resolution output.

 (2) Energy efficient.

 (3) Many options to select.

 Dis-advantages:

 (1) Expensive.

 (2) Special paper required for higher

resolution output.

 (3) Time consuming in case of graphics

printing.

Thermal Printer

 Thermal printers are in- expensive printers mostly used in fax machines. The Thermal printers are further classified into two types.

 (1) Electro thermal printers:

 (2) Thermal Wax printers:

A fax machine using a thermal printer

“ Plotter ”

 A large scale printer which is very accurate in producing engineering drawings and architectural blueprints.

 Two types of plotters are flatbed and drum.

 Flatbed plotters are horizontally aligned while drum plotters are vertically positioned.

“Printers for different users”

 To choose a printer from a printer’s family following considerations are to be made.

 (1) What’s the budget?

 (2) Is color needed or just black& white?

 (3) What is the Volume of the output?

 (4) How important is the quality of the output?

 (5) What special features are needed?

 (6) Is the printer is to be used by a single user or a whole network?

“Small and medium offices”

 For small and medium scale offices a

better option is a multi-function printer

which is an integrated device fulfilling

various requirement of the office.

 For better output, a laser printer is the

best choice.

“Printers for banks, large

business organizations and

companies”

 In banks, large size business

environments and companies printers with

networking capabilities should be

preferred which can increase productivity

and reduce the cost without compromising

on the quality. Of course laser printer is

quite suitable choice but multi-functional

printer and inkjet printer can also play

vital role.