Printers

Assignment # 4

Printer is the most popular output device used today to produce hard copy output. There are many types of printers which are used by the users as according to their need. These are very useful nowadays as all the things which are uneasy to read on the monitor screen we used to print those things and read carefully.

There are many types of printer which are as follows:-

Dot-Matrix Printers.

Inkjet Printers.

Drum Printer.

Chain Band Printer.

Laser Printer.

Multi Function Printer.

It is a character printer that print one character at

a time. This Printer can form characters and all

kinds of images as pattern of dots. Since dot

matrix printer produce printed output as pattern

of dots, they can print any shape of character

that a program can describe. They therefore, can

print many special characters, different sizes of

print, and also have the ability to print graphics

such as charts and graphs. Dot Matrix printer are

normally haves slow printing speeds ranging

from 30-600 characters per second. They are

available at very low cost. These types of

printers are generally used to print the shipping

It prints characters by spraying patterns of ink on the paper from a nozzle or jet that can heated up selectively. The ink comes out of the nozzle in a form of vapors. After passing through a reflecting plate, it forms the desired letter/shape at the desired place. It is also a Character printer but it produces high quality output than dot matrix printers because these printers form characters with very tiny ink dots. Inkjet printers are slower than dot matrix

printer as inkjet printing speed is 40- 300 characters per second. Inkjet printer is also more expensive than dot matrix because it produces the high quality prints with more transformed technology. These printers are very popular because they are less expensive than laser printers and can print faster and accurate than dot matrix and other impact printers.

Drum printer is a line printers that print one line

at a time. In addition the drum printer is also the

impact printer. In this Printer it has a set

of hammers mounted in front of the drum in a

manner that an inked ribbon and paper can be

placed between the hammers and the drum.

Than the drum rotates at a high speed. A character is printed at a desired print position.

This printer has the speed of 300- 2000 lines per

minute. This printer also produces lots of noise

that’s why cover is used to reduce the noise.

Chain/Band printer are line printers that prints one line at a time. It consist of a metallic chain/band on which all characters of the character set supported by the printer are embossed. A standard character set may have 48,64 and 96 characters. The characters in the character set are embossed several times on the chain/band. Unlike drum printer the chain/band printer can be changed easily. It allows the printing to be done in different fonts and styles in the same printer. Due to the impact printing chain/band printers are noisy in operation and often use a cover to reduce the noise level. Printing speeds of the chain/band printers range from 400 – 3000 lines per minute.

Laser printers are the page printers that prints one page at a time. main component of the laser printer are a laser beam source, multi sided mirror, a photoconductive drum, and toner. Laser printers produces high quality output because they form characters by very tiny ink particles. The high end laser printer can have a resolution of 1200 dpi. Due to the high resolution , these printers give excellent graphics art quality. Laser printers are faster than other printers discussed earlier. Low speed laser printers can print 4 to 12 pages per minute. Owing to their better print quality and printing speed, laser printers are more expensive than the other types of the printers. These printers are very popular in the market because of its fast printing.

Multi Function Printers are also commonly known as all-in-one printers. With this type of device, your printing, scanning, faxing and photocopying needs are covered! These printers usually come in a variety of sizes with many being small enough to fit onto a small desk.

Aside from the multi function features that MFPs have, these are the common benefits that business owners can gain from this type of printer.

1. They take up less room.

2. They are usually lower in cost. Though it may seem expensive compared to the othertypes of printers, if you consider buying a fax machine, scanner, photocopier and aprinter, you’ll find that buying an MFP is actually a lot more affordable.

3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file.

The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created. Each of these layers can be seen as a thinly

sliced horizontal cross-section of the eventual object.

It all starts with making a virtual design of the object you want to create. This virtual design is made in a CAD(Computer Aided Design) file using a 3D modeling program (for the creation of a totally new object) or with the use of a 3D scanner (to copy an existing object). This scanner makes a 3D digital copy of an object and puts it into a 3D modeling program.

To prepare the digital file created in a 3D modeling program for printing, the software slices the final model into hundreds or thousands of horizontal layers. When this prepared file is uploaded in the 3D printer, the printer creates the object layer by layer. The 3D printer reads every slice (or 2D image) and proceeds to create the object blending each layer together with no sign of the layering visible, resulting in one three dimensional object.

Printers are used Widely across the

world.

Printers are Now their in every prize.

Printers are very useful in many fields of life like

Education, Business,

Companies, Shops.

Printers are Improved very

much in quality.