Skip to content

23Feb.md

Latest commit

 

History

History
70 lines (60 loc) · 2.17 KB

23Feb.md

File metadata and controls

70 lines (60 loc) · 2.17 KB

ICT Lesson, 23 Feb notes

0. Output devices

1. Printers

  • Production Printers

    • Large and EXTREMELY expensive
    • High quantity, can print a lot of documents shortly
      • Used to print exam papers
    • Large paper tray
      • Can store a lot of paper
    • Fuser/drum in middle -> same as laser printer
    • Can print with both A3 and A4 papers
    • Inserter included
      • Can easily batch print front pages
      • Can easily make leaflets / bind (nail) documents
    • Can print ~100 pages per minute

  • Dot-matrix printer

    • Pretty old technology
    • Cheap
    • Prints stuff by dots
    • Requires specific Dot Matrix Printer Paper

  • Inkjet printers

    • Pretty cheap
    • Small in size
    • Preferred in households / small offices
    • Print head drops ink onto paper to form objects

  • Laser printers

    • Photocopier
    • add positive electrons on paper -> drum charge positive electrons -> laser seperate drum into have/not have electrons -> carbon go to drum to form image -> carbon go to paper when scrolling -> fuser (100/200oc) let carbon evaporate and stick on surface of paper -> printed
    • Fuser is usually hot to make carbon stick onto paper
      • Have warmup time (to heat the fuser)
    • Refer to textbook page 51 laser_printer

  • Thermal printer

    • Small. Quiet. Cheap.
    • Low resolution
    • Printed output slowly fades (not long-lasting)
    • Monocolor
    • Uses special thermal paper
    • Widely seen in restaurants and supermarkets.

  • Multifunctional printers

    • Multifunctional!
    • Has extra functions
      • Scanning
      • Photocopying
      • Fax

  • Plotter

    • You won't use this at home
    • support very large paper (A1 and larger)
    • Very high accuracy
      • Widely used for construction designs and banners
    • Supports printing on special textures
      • e.g. Plastic
    • Extremely slow (few hours/day for one page)

2. DSE question type

  • 功利時間 xd
  • Choose printer in different situations
    • State advantages and disadvantages to support your decision