HP Printers - Printer

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A device prints text or illustrations on paper common optical effects include fade outs and fade ins, dissolves, slow motion, fast motion, and matte workAn optical printer is a device consisting of one or more film projectors mechanically linked to a movie camera. It allows filmmakers to re-photograph one or more strips of film. The optical printer is used for making special effects for motion pictures, or for copying and restoring old film material.. More complicated work can involve dozens of elements, all combined into a single scene.
A device name prints text or illustrations on paper. There are many different types of printers. In terms of the technology utilized printers fall into the following categories
Daisy-wheel Similar to a ball head typewriter this type of printer has a plastic or metal wheel on which the shape of each character stands out in relief. The hammer presses the wheel against a ribbon which in turn makes an ink stain in the shape of the character on the paper. Daisy-wheel printers produce letter quality print but cannot print graphics.
Dot-matrix Creates characters by striking pins against an ink ribbon. Each pin makes a dot and combinations of dots form characters and illustrations.

Ink-jet Sprays ink at a sheet of paper. Ink-jet printers produce high-quality text and graphics. Laser uses the same technology as copy machines. Laser printers produce very high quality text and graphics. LCD & LED Similar to a laser printer, but uses liquid crystals or light-emitting diodes rather than a laser to produce an image on the drum. Line printer contains a chain of characters or pins that print an entire line at one time. Line printers are very fast, but produce low-quality print. thermal printer: An inexpensive printer that works by pushing heated pins against heat-sensitive paper. Thermal printers are widely used in calculators and fax machines.