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CompTIA A+ Core 1 > 3.7 Printers > Flashcards

3.7 Printers Flashcards

1
Q

Laser Printer

A
  • prints using laser, heat and toner
  • many moving parts
  • fast and high quality
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2
Q

Imaging Drum

A
  • image is drawn into a photosensitive drum with a laser
  • drum picks up the toner
  • can be its own printer part or integrated to the toner cartridge
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3
Q

Fuser Assembly

A
  • uses heat and pressure to melt toner onto the paper
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4
Q

Transfer Belt and Roller

A
  • rotating belt that feeds paper to the imaging drum and uses negative charge to transfer the toner to the paper
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5
Q

Pickup Roller

A
  • picks up a single paper and feeds it into the printer
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6
Q

Separation Pad

A
  • prevents multiple sheets from being picked up
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7
Q

Duplex Assembly

A
  • flips paper when printing on both side
  • can be built in or an add on
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8
Q

Laser Printing Process

A
  1. Processing: send data to the printer
  2. Charging: charge roller provides negative charge to the imaging drum
  3. Exposing: laser draws image onto the drum. The laser creates a positive charge
  4. Developing: negatively charged toner attaches to the positively charged sections of the drum
  5. Transferring: transfers the toner onto the paper
  6. Fusing: fuser melts the toner onto the paper
  7. Cleaning: cleans excess toner off the drum
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9
Q

Replacing Toner Cartridges

A
  • power down printer before installation
  • many toner cartridges contain an imaging drum
  • removing packing strips from the new drum
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10
Q

Laser Printer Maintenance Kit

A
  • purchase from manufacturer
  • contains new parts: feed roller, fuser unit, etc.
  • printer will inform user when maintenance is required
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11
Q

Laser Printer Callibration

A
  • different toner cartridges print with different densities
  • calibration can adjust the density
  • can be automated or done manually
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12
Q

Laser Printer Cleaning

A
  • check manufacturer manual
  • safe to use water and/or isopropyl alcohol
  • clean with damp cloth and/or a vacuum specifically for cleaning toner
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13
Q

Inkjet Printer

A
  • prints using ink cartridges
  • cheaper printer but expensive ink
  • proprietary cartridges
  • clogs easily
  • ink fades
  • mainly for home use
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14
Q

Ink Cartridge

A
  • cyan, magenta, yellow, black
  • place drops of ink onto a page
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15
Q

Print Head

A
  • uses tiny nozzles to spray or drop ink onto the paper
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16
Q

Feed Rollers

A
  • pick up paper and feed through the printer
  • duplexing is available on some printets
17
Q

Carriage Belt

A
  • cartridges are placed in a carriage connected to a belt
  • belt moves the carriage back and forth while the cartridges drop ink onto the paper
18
Q

Inkjet Printer Maintenance

A
  • clean printer heads to prevent clogging (many printers automatically clean)
  • replace cartridges
  • calibration: align nozzles to the paper
  • clear paper jams
19
Q

Thermal Printer

A
  • uses heat to print
  • special paper turns black when heated
  • most commonly used for receipts
20
Q

Thermal Printer Parts

A

Feed Assembly
- long cylinder that pulls paper through the printer
Heating Element
- full-length heating element
- heats certain sections of the papet

21
Q

Thermal Paper Maintenance

A
  • paper replacement, check size
  • clean with isopropyl alcohol
  • cleaning card can go through the printer to clean the head and paper pathway
  • use compressed air or damp cloth to clean debris
22
Q

Impact Printer

A

Aka dot-matrix printer
- print head has a small matrix of pins
- pins press against a ink ribbon to mark the paper
- multiple copies can be printed simultaneously (usually with carbon paper)
- low cost
- poor graphics
- niche uses

23
Q

Impact Printer Parts

A

Printer Head
- contains the pins that hit the ink ribbon
- moves back and forth across paper
- integrated heat sink

Printer Ribbon
- contains ink, transfers ink to paper when pressed by the pins
- proprietary size, easy to replace

Tractor Feed
- commonly used by impact printers
- uses holes on the side of the paper to pull it through the printer
- tractor paper is continuous folded paper with perforations

24
Q

Impact Printer Maintenance

A
  • printer ribbon replacement
  • print head replacement
  • replacing paper
25
Q

3D Printer

A
  • creates a 3D item based on an electronic model
  • build the objects in layers
26
Q

Filament 3D Printing

A

Fused Deposition Modeling
- melt filament together as thin layers
- most common type of 3D printing
- easy to manage, minimal mess
- large print bed

27
Q

Resin Printing

A

Stereolithography 3D Printing
- smoother and more detailed than filament printing
- liquid resin is hardened using a light source
- object is hanging from the build platform
- layers are added to the bottom
- resin must be handled with protective gear and disposed at a hazardous materials disposal

28
Q

3D Print Bed

A
  • flat adhesive surface on which the 3D print is built on

CompTIA A+ Core 1 (28 decks)

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