Fundamental Printer Scanners-chp7

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CHAPTER 7

What is a printer?

Copies of electronic Files

What is a scanner?

Convert paper documents into electronic files

Why does an understanding of operation help a technician?

So the tech can check what changes were made to the device

What questions could a customer ask a technician to do for them?

Select a printer
Install & configure a printer
troubleshoot

What three types of printers are common in today's use?

Ink Jet/ Laser/ Impact Prnters

What are characteristics that every technician should know before recommending a printer?

Capacity
Speed
Color
Quality
Reliability
Cost

How is speed measured?

Page per minute

How is quality measured?

(dpi) dots per inch

What options are considered when looking at reliability?

-warranty
-scheduled service
-(MTBF) mean time between failure

What factors should be considered when looking at total cost of ownership?

-capacity -quality
-speed -reliability
-color -cost

List and briefly describe the interfaces that a technician can connect a pc and a printer.

-(scsi)small computer system interface
-firewire (high speed communication
-ethernet

List the 6 steps involved in the LaserJet printing cycle

1 cleaning
2 conditioning
3 writing
4 developing
5 transferring
6 fusing

Describe the process of the LaserJet printing cycle

P 246-----in cisco BOOK

Before working on any LaserJet printer, what should a technician always do?

Make sure VOLTAGE is properly discharged

Describe an impact printer and list examples

Print heads strike the ink ribbon causing character to be printed
-Daisy Wheel
-Dot Matrix

List advantages and disadvantages for impact printers

ADVANTAGES DISADVANTAGES
-cheap consumables -noisy
-continuous-feed paper -low resolution
-carbon copy printing -limited color capability
capability -slow print

Describe the inkjet printer process

spray ink onto a page through tiny holes called nozzles, the ink is sprayed in a pattern on the page

Describe the thermal inkjet nozzle

pulse of electrical current is applied to heating chambers around the nozzles & onto the paper

Describe the piezoelectric inkjet nozzle

crystals are located in the ink reservoir at the back of each nozzle

Describe the solid-ink printer process

Spray ink through nozzles
**use solid sticks of ink****

Describe the thermal printer process

Thermal paper becomes black when heated
*******chemically treated & waxy quality

Describe the dye-sublimation printer process

print head passes over a sheet of cyan, magenta, yellow & clear overcoat (CMYO)

What is available on the manufacturer CD that comes with a purchased printer?

Installation
Configuration Info

List the steps in the installation process of printers

~connect to computer/ network/ or print server
~Find out if a newer driver is avail.(printer website)
~Download driver(usually zipped or compressed
~Install driver
~Test new printer Driver

What are the two ways to setup a printer?

1-Dedicated computer
2-Small network
3-Intergrated into the printer

Why do you not plug a printer into a UPS?

Power surge occurs when printer is turned on
*****damage UPS unit*******

What is a driver?

software programs

Where can you find drivers?

comes with printer or website of manufacture

What is firmware?

set of instructions stored on teh printer

Why would a technician want to add memory to a printer?

improve printing to speed

List some common configurations that may be set up on a printer.

~paper type
~print quality
~color printing
~paper orientation

What tools are available to optimize performance?

~print spool settings=> cancel/pause print jobs
~Color calibration => adjust settings
~paper orientation=>select landscape or portrait

What should a technician always do after installing a printer?

print test page

What must all computers who share a printer have?

correct driver installed

List the different types of scanners

~all in one
~flatbed
~drum
~handheld

What file type do most scanners use?

RBG image

What does the term all-in-one device entail?

combination device:
~>scans,prints,send fax, copies

Describe how a flatbed scanner works and list an example of its use.

Coverts hard copy data or image to electronic image

List advantages of having a handheld scanner, Example of its use

SMALL~drag text in book or material to collect digital image. EX: grocery scanner/

Describe how a drum scanner works and list an example of its use.

spins film around a drum or beam of lights capture the images as it spins

List steps of installation of a scanner

~install driver

How are scanners powered?

AC wall outlet

How does a technician install the drivers for a scanner?

using driver software provided by manufacture or website

List some common configurations that may be set up on a scanner.

~color,gray,black & white scanning
~one touch scanning
~quality & resolution choice
~sheet feeder

What does calibration mean with a scanner?

compares scanners output

What is the definition of preventive maintenance?

maintain components, dusts, particles, by cleaning devices or changing parts

Where can the maintenance schedule of a printer be found?

manufacture

What is the most importance preventive maintenance task for a scanner?

...

With a scanner or printer, a technician must be able to determine what when troubleshooting?

establish the problem

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