Laser Printers

The ‘Model 3800’ by IBM was the first laser printer, introduced in 1975. Very soon, the ‘ND 2 by Siemens and the ‘9700’ by Xerox also came out. The technology of laser printers was revolutionized by the introduction of the LaserJet in 1984, by HP. After that, the prices of laser printers have continued to drop.

A laser printer uses a laser beam to print images of supreme quality. This is done by first producing the image on a photosensitive drum with the help of a laser beam, and then transferring the image onto paper using a usual printing process.

Accuracy, economy and speed are the major advantages of laser printers. This is because the laser can move very fast and print with a better speed than an ink jet. And since a laser travels in a single line, it is more precise, thereby avoiding the spilling of ink. Even though laser printers are more expensive than inkjet printers, their toner is cheaper and long lasting. It is because of this that laser printer is used more often in offices.

Cost can be a disadvantage of laser printers, as they are expensive compared to mechanical printers. The maintenance required by laser printers can be very costly. Also, the quality produced by laser printers is very book-like, and hence they can also be misused.

Before one decides to buy a laser printer, there are a few features that should be kept in mind. These include the speed and printing capability (24 ppm for a workgroup printer), the standard resolution, which is 600 dots-per-inch, the printer languages and the paper handling of the printer. The top brands of laser printer include Hewlett Packard, Lexmark and Xerox.

Laser Printers And Inkjet Printers – Advantages And Disadvantages

When choosing a printer the first choice will be whether to buy a laser printer or an inkjet printer. The following summarize the main advantages and disadvantages of inkjet and laser printers.

Inkjet Printers

Inkjet printers works by propelling droplets of ink onto the paper. The ink is released from small removable cartridges and if it is a colour inkjet printer there will normally be a black cartridge and three different coloured cartridges. You can either replace the whole cartridge or refill the cartridges with a special refill kit.

Advantages

  • Inkjet printers are considerably cheaper to buy.
  • High end printers are capable of producing good quality images when used with special paper.
  • Most models are relatively light weight and compact so they don’t take up too much space on the desk.

Disadvantages

  • Due to the cost of ink, running an inkjet printer over time is a more expensive than a laser printer.
  • Prints emerge from the printer slightly wet and may need time to dry.
  • Printing is slower and therefore inkjets aren’t designed for high volume printing.

Laser Printers

This printer incorporates a laser beam as a part of the image processing. Rather than using ink a laser printer uses toner, a dry plastic powder combined with carbon black or colouring agents. The consumable a part of the printer is encased in a cartridge which needs to be replaced from time to time.

Advantages

  • Laser prints are generally very high and very accurate.
  • For high volume printing laser printers are considerably cheaper to run.
  • Printing is fast so they can handle large volumes.
  • Due to the technology used prints from a laser printer emerge from the printer dry to the touch.

Disadvantages

  • Buying a laser printer can be expensive when compared to an inkjet.
  • Colour laser printers are significantly more expensive than a colour inkjet.
  • Laser printers are larger and heavier as they need to contain the imaging drum and laser technology.

Laser Printer Buying Guides

If you are looking to purchase laser printer, here are some features of laser printers which would be helpful to those who are purchasing laser printer or those who need information about laser printers.

Laser printers give the highest quality text and images among the printers. Laser printers got different model. Some of them are perfect for small businesses and home offices. Some reliable low-cost models are also available that are perfect for everyday personal printing.

Some of the features of Laser Printers are

Resolution, Quality, and Color: –

The standard resolution of leaser printer is 1200 dots per inch (dpi). For everyday printing, including small DTP jobs this type of laser printer is well-suited. But still some laser printers have a resolution of 300 dpi. Resolution enhancement technology is used in such laser printer with a resolution of 300 dpi because such printer causes rough edges on the images. RET are used to smooth the rough edges.

Color laser printers are more expensive as compared to black-and-white versions and require a great deal of printer memory to produce high-resolution images

Speed: –

As far as speed is concerned Lasers printer is the fastest among the printer. One can get full-color results as fast as 3 to 4 pages per minute (ppm), and black-and-white output as fast as 25 ppm. But it needs time to warm up the fuser to operating temperature when the printer is turn on. It generally takes 5 to 30 seconds to warm up the printer. But now laser printer with “instant on” fuser is available. This instant on fusers has been design to reduce the warm up time of a printer

Paper handling, size and capacity: –

Most laser printers use letter-size, cut-sheet paper. Supplementary paper trays or feeders can be added to increase the capacity.

Laser printers can print on a variety of papers sizes, types and weights, such as transparencies, labels and card stock. They can also handle non-traditional media like envelopes. But papers, such as iron-on transfers, are not suitable for laser printers, as the heat used in the transfer process could damage the paper and gum up your printer.

A laser printer with duplex printing can print on one side of the paper, then turn the paper over and print on the other side. Most laser printers, however, use the simpler manual duplex printing.

PCL or postscript:-

PCL – “Printer command language” is the standard printer language for HP’s and most other laser printers. PCL is used for printing letters, database printouts, spreadsheets and simple graphics. A laser printer that uses only PCL can be upgraded to Postscript by installing a software driver provided by the manufacturer of the laser printer.