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Computer Applications to Business. Lecture 11-12. Printing. Commonly Used Printers. Printer can be categorize into two categories: Impact printers Non-impact printers. 1) Impact printers. Creates an image by using pins or hammers to press an inked ribbon against the paper.

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commonly used printers
Commonly Used Printers
  • Printer can be categorize into two categories:
    • Impact printers
    • Non-impact printers
1 impact printers
1) Impact printers
  • Creates an image by using pins or hammers to press an inked ribbon against the paper.
  • Generate output by striking the paper
  • Uses an inked ribbon
  • For example ; type writer
  • The most common type of impact printer is the dot matrix printer
  • Other types of impact printers are line printers and band printers.
2 non impact printers
2) Non-impact printers
  • Other means to create an image.
  • Ink jet printers, for example, use tiny nozzles to spray droplets of ink onto the page.
  • Laser printers work like photocopiers, using heat to bond microscopic particles of dry toner to specific parts of the page.
  • Use methods other than force
  • Tend to be quiet and fast
commonly used printers1
Commonly Used Printers
  • Dot matrix printers
    • Impact printer
    • Commonly used in workplaces where physical impact with the paper is important.
    • When the user is printing to carbon copy or pressure sensitive forms.
    • Used to print to multi-sheet pages
    • Print head (contains a cluster or matrix of short pins arranged in one or more columns) strikes inked ribbon.
dot matrix printers
Dot matrix printers
  • The more pins that a print head contains, the higher the printer’s resolution.
  • The lowest-resolution dot matrix printers have only nine pins;
  • The highest-resolution printers have 24 pins.
  • The slowest dot matrix printers create 50 to 70 characters per second;
  • the fastest print more than 500 cps.
  • Not commonly used in homes,
  • Still widely used in business.
commonly used printers2
Commonly Used Printers
  • Other types of impact printers:
  • Line printers
    • Uses a special wide print head that can print an entire line of text at one time.
    • Line printers do not offer high resolution but are incredibly fast.
    • The fastest can print 3,000 lines of text per minute.
commonly used printers3
Commonly Used Printers
  • Other types of impact printers:
  • Band printers
    • Features a rotating band embossed with alphanumeric characters.
    • To print a character, the machine rotates the band to the desired character then a small hammer taps the band, pressing the character against a ribbon.
    • Can generate 2,000 lines of text per minute
commonly used printers4
Commonly Used Printers
  • Ink-jet printers
    • Non-impact printer
    • Inexpensive home printer
    • create an image directly on the paper by spraying ink through tiny nozzles.
    • attain print resolutions of at least 300 dots per inch.
    • When used with special printing paper, many ink jet printers can produce photo-quality images.
    • Color output common using CMYK
      • Cyan, magenta, yellow, black
    • Sprays ink onto paper
commonly used printers non impact printer
Commonly Used Printers--Non-impact printer
  • Laser printer
    • Non-impact printer.
    • Produces high quality documents.
    • Color or black and white.
    • A CPU and memory are built into the printer to interpret the data that it receives from the computer and to control the laser.
    • Single-color (black) laser printers typically can produce between 4 and 16 pages of text a minute.
    • The most common laser printers have resolutions of 300 or 600 dpi.
slide15

Commonly Used Printers--Non-impact printer

  • Laser printer
    • Print process
      • Laser draws text on page
      • Toner sticks to text
      • Toner melted to page
    • Speed measured in pages per minute (PPM)
    • Quality expressed as dots per inch(DPI)
commonly used printers5
Commonly Used Printers

Laser printer: Printing process

commonly used printers6
Commonly Used Printers

Laser printer: Printing process

commonly used printers7
Commonly Used Printers
  • All-in-one peripherals
    • Scanner, copier, printer and fax
    • Popular in home offices
    • Prices are very reasonable
comparing printers
Comparing Printers
  • Determine what you can spend
  • Initial cost
  • Cost of operating
  • Image quality
    • Also known as print resolution, is usually measured in dots per inch (dpi).
  • Speed
    • Printer speed is measured in the number of pages per minute (ppm) the device can print.
    • Most consumer-level laser printers offer print speeds of 6 or 8 ppm,
    • But high-volume professional laser printers can exceed 50 ppm.
high quality printers
High-Quality Printers
  • Special purpose printers
    • Used by a print shop
    • Output is professional grade
    • Prints to a variety of surfaces
high quality printers1
High-Quality Printers
  • Photo printers
  • Thermal wax printers
  • Dye sublimation printers
  • Plotters
high quality printers2
High-Quality Printers
  • Photo printers
    • Produces film quality pictures
    • Prints very slow
    • Prints a variety of sizes
    • Many larger-format photo printers can print multiple images on a single sheet of paper
high quality printers3
High-Quality Printers
  • Thermal wax printers
    • Used primarily for presentation graphics and handouts.
    • Create bold colors and have a low per-page cost for printouts with heavy color requirements, such as posters or book covers.
high quality printers4
High-Quality Printers
  • Thermal wax printers
    • Color generated by melting wax.
    • Colors do not bleed.
    • Operation costs are low.
    • Output is slow.
high quality printers5
High-Quality Printers
  • Dye sublimation printers
    • A ribbon containing panels of color is moved across a focused heat source capable of subtle temperature variations.
    • The heated dyes evaporate from the ribbon and diffuse on specially coated paper or another material, where they form areas of different colors.
    • Produces realistic output
high quality printers6
High-Quality Printers
  • Dye sublimation printers
    • Very high quality
    • Color is produced by evaporating ink
    • Operation costs are high
    • Output is very slow
high quality printers7
High-Quality Printers
  • Plotters
    • A plotter is a special kind of output device.
    • Used to print large-formal images , such as construction drawings created by an architect.
    • Large high quality images
    • Older models draw with pens
    • Operational costs are low
    • Output is very slow
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