Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CompTIA® A+ Certification Prep 2: Software > Lesson 11 - Chapter 1: Printer Components and Technologies > Flashcards

Lesson 11 - Chapter 1: Printer Components and Technologies Flashcards

1
Q

How do impact printers work?

A

they create an image by physically striking an inked ribbon against the paper’s surface

(I’m imagining typewriters)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 5 types of modern printers?

A
  1. Impact printers
  2. Inkjet printers
  3. Thermal printers
  4. Laser printers
  5. 3D printers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a daisy-wheel printer? Are they still in use today?

A

an outdated, essentially electric typewriter attached to a computer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What’s the cousin of daisy-wheel printers? Are they still in use today?

A

dot-matrix printers, and yes they’re still found in many offices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Due to what reasons would you not find a dot-matrix printer for home use?

A

Not high-quality and flexible for a low cost

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are 3 reasons dot-matrix computers are still used in businesses?

A
  1. Were already in offices
  2. Can be used for multipart forms as they physically strike the paper
  3. Inked ribbons are cheaper than ink/toner
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Impact printers are ideal for settings where what is not critical?

A

Impact printers are ideal for when speed, flexibility and print quality are not critical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do impact printers perform? Fast or slow?

A

slow and noisy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Example of a multipart printing computer?

A

PoS machines (Point-of-Sale)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

PoS machines use special impact paper that allows them to print….

A

receipts in duplicate, triplicate, or more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are printwires?

A

the grid of tiny pins a dot-matrix printer uses to strike an inked printer ribbon and produce images

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

For dot-matrix printers, what are printwires held in?

A

the printhead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How does the BIOS for a dot-matrix printer interpret an image?

A

it paints the image as individual dots (like pixels on a monitor)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Modern dot-matrix printers use how many pins in the print head?

A

24 pins, the more pins the higher the resolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does NLQ stand for? What is it referring to? (2)

A
  1. Near Letter Quality (or Letter Quality)
  2. Modern dot-matrix printers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How does the tractor-feed paper work on a dot-matrix printer?

A

the feed paper has holes on its side that are engaged by metal sprockets to pull the paper through

(sprockets = wheels of a tractor)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

On an inkjet printer, what 2 things move the carriage back and forth so the ink can cover the whole page?

A
  1. carriage belt
  2. motor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

An inkjet printer uses a printhead connected to what?

A

the printhead is connected to a carriage that contains the ink

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

On an inkjet, what grabs the paper? (2 options) Where are they located?

A
  1. roller (under or inside printer)
  2. feeder (usually on the back of the printer)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does DOD stand for and how does it work? (2)

A
  1. Drop-on-Demand
  2. Software directs the ink to eject through tiny tubes a drop at at time
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What’s a second class of inkjet printers that is used for commercial printing?

A

Continuous inkjet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the 2 types of DOD inkjet printers? Which is most common today?

A
  1. Thermal (uses heat to push the ink)
  2. Piezoelectric (uses electricity to push the ink) [most common today]
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How does piezoelectric printing control the direction of the inkjet spray?

A

each nozzle is surrounded by half+/half- electrically charged horizontal/vertical plates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are ink cartridges?

A

special, small containers that store inkjet ink

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What did early ink setups for early inkjets versus more modern ones look like?

A

Older inkjets came with 2 carts: 1 black, 1 CMYK
Newer inkjets come with at least 4 carts: 1 red, 1 yellow, 1 blue, 1 black

[more carts = more quality]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Older inks would ___ if the paper …. or….

A

Older inks would smudge if the paper got wet or start to fade

(modern inks are smudge-proof and archival quality)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What are 2 key measures of an inkjet’s capabilities?

A
  1. Print resolution
  2. Print speed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

How is resolution measured in?

A

Dots per inch (dpi)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What does print resolution mean?

A

How densely the printer lays down the ink onto the page

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What do higher dpi numbers mean for the print resolution?

A

Higher Dots Per Inch (dpi):
the ink dots on the page are closer together (the document will look better)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is print speed measured in for an inkjet?

A

pages per minute (ppm)

32
Q

Are there different speeds for inkjets?

A

Yes, most printers have a speed for monochrome printing (black ink), and another for full-color

33
Q

If you primarily print photos, what’s a good printer to use?

A

inkjet, they excel at printing on glossy photo paper

34
Q

Can you use an inkjet to print a high volume of ordinary document pages? Why?

A

No, because the print speed can be slower than a laser printer and cost a lot more

35
Q

What happens if you don’t use an inkjet printer for a while (weeks)?

A

the ink in the nozzle can dry up and clog it

36
Q

How do you unclog an inkjet nozzle?

A

you run a special cleaning cycle to flush out the ink (called cleaning the heads)

37
Q

What’s a downside to having to clean the heads on an inkjet?

A

it wastes time and ink (expensive)

38
Q

What is duplexing? What printer(s) can it be found on?) (2)

A
  1. Duplexing is printing on both sides of a paper (some don’t need a manual flip)
  2. More common with laser printers, but also found on high-end inkjets
39
Q

How do thermal printers work?

A

they use a heated printhead to create a HQ image on special or plain paper

40
Q

Which type of thermal printer needs special heat-sensitive paper?

A

Direct thermal printers

41
Q

What are the 2 types of thermal printers?

A
  1. Direct thermal printers
  2. Thermal-wax transfer printer
42
Q

How do direct thermal printers work? What type of printing medium do they need?

A

They use a heating element to burn dots into the surface of special heat-sensitive thermal paper

43
Q

A direct thermal printer uses what to draw the thermal paper past the heating element?

A

feed assembly

44
Q

What process do laser printers use to print?

A

electro-photographing

45
Q

How do laser printers work? What do they rely on?

A

They rely on the photoconductive (electricity-conducting) properties of certain organic compounds when exposed to light

46
Q

What do laser printers use as a source for photoconductivity? (2)

A
  1. lasers
  2. LED arrays (cheaper printers)
47
Q

What’s spot color?

A

A laser printer benefit of adding eye-catching color elements to a plain page

48
Q

What is toner? What printers is it used in?

A
  1. A powder that consists of a mixture of iron and plastic that creates the image on the page
  2. Laser Printer (toner cartridges)

( The iron makes it respond to magnetic charges and the plastic makes it meltable to adhere to the paper.)

49
Q

Color laser printers have what 4 toner cartridges?

A
  1. Black
  2. Cyan
  3. Magenta
  4. Yellow
50
Q

What is an imaging drum? What does it drain?

A

a grounded, aluminum cylinder that drains the electrical charge from the photosensitive compound particles it’s coated with

51
Q

What is an imaging drum also called? For what type of printer are they used with? (2)

A
  1. Photosensitive drum
  2. Laser Printers
52
Q

What is the laser printer’s erase lamp?

A

it’s what exposes the photosensitive particles in the imaging drum to light so any electrical charge bleeds away into the grounded drum and leaves the particles electrically neutral

53
Q

LP: Where is the primary corona/primary charge roller located?

A

close to the photosensitive drum (but doesn’t touch it)

54
Q

LP: What does “corona” mean?

A

an electric field

55
Q

LP: How is voltage passed to the imaging drum to charge the photosensitive particles on the surface?

A

the primary corona/charge roller’s high voltage creates an electrical field that enables voltage to pass to the drum

56
Q

What acts as the writing mechanism of a laser printer?

A

the laser

57
Q

What does the toner cylinder do?

A

charges the toner with a negative charge of between ~200 and ~500 volts

58
Q

The primary corona wire/charge roller apply a uniform negative charge of between ___ and ____ to the drum

A

between ~600 and ~1000 volts to the drum

59
Q

What negative charge are the particles on the imaging drum left with after the laser strikes those certain areas?

A

~100 volt negative charge

60
Q

The toner cylinder charges the toner with a negative charge of between…?

A

~200 and ~500 volts

61
Q

In older laser printers, a thin wire called the ___ ____ applied a positive charge to the paper

A

transfer corona

62
Q

In newer printers, what did the transfer corona turn into?

A

transfer rollers

63
Q

What does a transfer roll do?

A

attracts toner onto the paper with a positive charge

64
Q

Since the imaging drum is negatively charged, how does the positively charged paper stop from wrapping around the drum?

A

a static charge eliminator removes the charge from the paper

65
Q

What are 3 ways to clean the delicate transfer corona?

  1. Use the
  2. Use a
  3. Some toner or
A
  1. Use the specialized tool it comes with
  2. Use a q-tip soaked in 90% denatured alcohol
  3. Some toner or drum carts have a slider to clean the wire without touching it
66
Q

What does the fuser assembly contain? LP

A

the pressure roller and heated roller that fuse the toner to the paper with heat

67
Q

Techs should be extra careful with ___ printer power supplies because….?

A

laser printer PSU, because of their high-voltage capacitors

68
Q

What makes a laser printer one of the most dangerous devices in computing?

A

the corona requires extremely high voltage from the power supply

69
Q

Always __ __ and ___ the printer before performing any maintenance

A

turn off, unplug

70
Q

LP: A separation pad uses what to separate a single sheet from others that were picked up?

A

friction

71
Q

What can you do to a LP model to help fix bugs, add new features, and update the fonts in the printer?

A

flashing the ROM (like upgrading the BIOS/UEFI on a PC)

72
Q

As each printer has its own RAM (DIMM sticks), which ones tend to have more RAM and which ones have less?

A

More = Laser printers
Less = print line by line like inkjet and dot matrix

73
Q

What’s an important maintenance issue for laser printers?

A

the coronas generate ozone (O3) and the special ozone filter needs to be vacuumed or replaced periodically

74
Q

3D Printers require what connection to work?

A

they require a manual connection of the plastic filaments to the print device (apart from USB connection and installed drivers)

75
Q

What’s the 3D print preparing process called and also what each layer is referred to?

A

slicing

(refers to the layers for the print job)

CompTIA® A+ Certification Prep 2: Software (45 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions