Printers And Multifunction Devices Flashcards Preview

It A+ Vocab 1001 > Printers And Multifunction Devices > Flashcards

Flashcards in Printers And Multifunction Devices Deck (51)
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1

Printer that creates an image on paper by physically striking an ink ribbon against the paper’s surface. Tend to be slow and noisy but when speed, flexibility, and print quality are not critical, they provide acceptable results

Impact Printer

2

Essentially an electric typewriter attached to the computer instead of directly to a keyboard; mostly disappeared

Daisy-Wheel Printer

3

Cousin of daisy-wheel printers; used in businesses. Use a grid of tiny pins (printwires) to strike an inked printer ribbon and produce image on paper

Dot-Matrix Printer

4

Case that holds printwires

Printhead

5

9-pin dot-matrix printers

Draft Quality

6

24-pin dot-matrix printers

Letter Quality/Near-Letter Quality (NLQ)

7

Printer that uses a printhead connected to a cartridge that contains the ink. A belt and motor move the carriage back and forth so the ink can cover the whole page

Inkjet/Ink-Dispersion Printer

8

Grabs paper from a paper tray (usually inside or under the printer) or feeder (usually on the back of the printer) and advanced it through the printer

Roller

9

How densely the printer lays down ink on the page. Measured in horizontal and vertical dots per inch (DPI) where higher numbers mean that the ink dots on the page are closer together, so your printed documents will look better

Print Resolution

10

Measured in pages per minute (ppm)

Print Speed

11

Cause something to change from a solid form into a vapor and then back into a solid

Sublimation

12

Used mainly for photo printing, high-end desktop publishing, medical and scientific imaging, and other applications for which fine detail and rich color are more important than cost and speed

Dye-Sublimation/Thermal Dye Transfer Printing

13

The printed image is not constructed of pixel dots but a continuous blend of overlaid differing dye colors. Documents printed through the dye-sublimation process display these

Continuous-Tone Images

14

Use closely packed, single-color dots to stimulate blended colors

Dithered Images

15

Printer that uses a heated printhead to create a high-quality image on special or plain paper

Thermal Printer

16

Use a heating element to burn dots into the surface of special heat-sensitive thermal paper. Examples: first generation fax machines, receipt paper

Direct-Thermal Printer

17

Work similarly yo dye-sublimation printers, except that instead of using rolls of dye-embedded film, the film is coated with colored wax. Doesn’t require special paper like dye-sublimation ones do

Thermal Wax Transfer Printer

18

Printer that uses a process called electro-photographic imaging to produce high-quality and high-speed output of both text and graphics. Rely on the photoconductive (particles of these compounds when exposed to light will conduct electricity) properties of certain organic compounds

Laser Printer

19

Supplies the toner that creates the image on the page in a laser printer. To reduce maintenance costs, many other laser printer parts, especially those that suffer the most wear and tear, have been incorporated into it

Toner Cartridge

20

An aluminum cylinder coated with particles of photosensitive compounds. Drum is grounded to the power supply, but the coating is not. When light hits these particles, whatever electrical charge they may have “drains” out throughout the grounded cylinder

Imaging/Photosensitive Drum

21

Exposes the entire surface of the imaging drum to light, making the photosensitive coating conductive

Erase Lamp

22

Located close to the photosensitive drum, never touches the drum. When it is charged with an extremely high voltage, an electrical (corona) forms, enabling voltage to pass to the drum and charge the photosensitive particles on its surface. The primary grid regulates the transfer of voltage, ensuring that the surface of the drum receives a uniform negative voltage of between 600 and 1000 volts

Primary Corona Wire/Charge Roller

23

The writing mechanism of the printer. Writes a positive image to the drum

Laser

24

In a laser printer, is a fine powder made up of plastic particles bonded to pigment particles. Particles of it are attracted to the areas of the photosensitive drum that have been hit by the laser

Toner

25

In older printers, a thin wire applies positive charge to the paper, drawing the negatively charged toner particles to the paper

Transfer Corona

26

In newer printers, accomplishes the same feat as transfer corona that draws the the toner onto the paper. The paper, with its positive charge, is also attracted to the negatively charged drum

Transfer Roller

27

Removes the charge from the paper preventing it from wrapping around the drum

Static Charge Eliminator

28

Most are located outside the toner cartridge, especially in large, commercial-grade machines. Prone to a build-up of dirt, toner, and debris through electrostatic attraction, and it must be cleaned. Quite fragile - usually finer than a human hair

Transfer Corona/Roller

29

Almost always separate from the toner cartridge. Usually close to the bottom of the toner cartridge and has two rollers to fuse the toner

Fuser Assembly

30

Uses friction to separate a single sheet from any others that were picked up

Separation Pad