Computer Printer Printing Mode Monochrome Color And Photo

Today it is common to print everything (even plain text) by sending ready bitmapped images to the printer, because it allows better control over formatting. Many printer driverIn computers, a printer driver is a piece of software that converts the data to be printed to the form specific to a printer. The purpose of printer drivers is to allow applications to do printing without being aware of the technical details of each prints do not use the text mode at all, even if the printer is capable of it.

2 Monochrome, color and photo printers

A monochromeSomething which is monochromatic has a single color. In physics, the word is used more specifically to refer to a electromagnetic radiation of a single wavelength. For an image the term monochrome is essentially black-and-white, but the term may be prefer printer can only produce an imageIn common usage, an image (from Latin imago or picture is an artefact that reproduces the likeness of some subject—usually a physical object or a person. Images may be two-dimensional (e. a photograph) or three dimensional (e. a statue). They are typicall consisting of one colorFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of, usually blackThis article is about the color black; for other uses, see Black (disambiguation). Black is a color with several subtle differences in meaning. Color or light Black can be defined as the visual impression experienced in directions from which no visible li. A monochrome printer may also be able to produce graduations of toneThe word tone is used in several different fields with different meanings. Alternate meanings Note Tone In music, the abstract concept of note refers both to a unit of fixed pitch which has been given a name, and also to the graphic representation of that of that color, such as a grey-scaleIn computing, a grayscale or greyscale digital image is an image in which the value of each pixel is a single sample. Displayed images of this sort are typically composed of shades of gray, varying from black at the weakest intensity to white at the stron.

A photo printer is a color printer that can produce images that mimic the color range and resolutionThe word resolution has several meanings, depending on context. Resolution (law), an action taken by a deliberative body, usually a legislature Angular resolution, the capability of an optical sensor to discern small objects Sensor resolution, the precisi of photographic methods of printing.

3 Methods of image creation

The media for most printers is paper, so they are usually classified according to the method of image creation:

3.1 Toner-based printers

Laser printers refer to the method used to adhere toner to the media. The advent of cost-effective, precision lasers has made them the dominant toner-based monochrome printer type for home and office applications.

3.2 Ink jet printers

Ink jet printers spray very small, precise amounts (usually a few picolitres) of ink onto the media. For color applications including photo printing, ink jet methods are dominant.

3.3 Impact printers

Impact printer s rely on a forcible impact to transfer ink to the media, similar to typewriters, that are typically limited to reproducing text. A daisy wheel printer is a specific type of impact printer where the type is carried on a wheel.

3.4 Dot-matrix printers

In the general sense many printers rely on a matrix of pixels, or dots, that together form the larger image. However, the term dot matrix printer is specifically used for impact printers that use a matrix of small pins to create precise dots. The advantage of dot-matrix over other impact printers is that they can produce graphical images in addition to text; however the text is generally of poorer quality than type-based impact printers.

Some sub-classifications of dot-matrix printers are ballistic wire printers and stored energy printers.

Dot matrix printers can either be character-based or line-based, referring to the configuration of the print head.

Dot matrix printers are still commonly used in low-cost, low-quality applications like cash registers. The fact that they use an impact printing method allows them to be used to print multi-part documents using carbonless copy paper (like sales invoices and credit card receipts), whereas other printing methods are unusable with paper of this type. Dot-matrix printers have been superseded for general computing use.

3.5 Other printers

A number of other sorts of printers are important for historical reasons, or for special purpose uses:

Dye-sublimation printers are sometimes used to produce high-quality color, or photographic, prints
Teletype
IBM Selectric typewriter
Thermal printer (heat sensitive paper)
Thermal wax printer (Xerox/Tektronix)
Spark printer (supplied for Sinclair ZX81)
Microsphere (special paper)

4 The printer manufacturing business

Often the razor and blades business model is applied. That is, a company may sell a printer at cost, and make profits on the ink cartridge , paper, or some other replacement part . This has caused legal dispute s regarding the right of companies other than the printer manufacturer to sell compatible ink cartridges.

5 Printing speed

The speed of early printers was measured in units of characters per second. More modern printers are measured in pages per minute. These measures are used primarily as a marketing tool.

6 Printer job classes

They are collections of printers. Print jobs sent to a class are forwarded to the first available printer in the class.

7 See also

Computer printers
Spooling
PostScript and PostScript Printer Description
PCL
Internet Printing Protocol ( CUPS).
printer driver
multifunctional printer
graphical output device
Pictbridge: a standard to print cam pics without using a computer.

Computer device Office equipment

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1 Printing mode