A+ Identify the technical components of printers and scanners

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In this session, you will learn to:
Objectives
Identify the technical components of printers and scanners.
Identify printing and scanning processes.
Install and configure printers and scanners.
Maintain and troubleshoot printers and scanners.
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Printer and Scanner Following are the printer and scanner components:
Components
Printer and scanner memory
Printer and scanner drivers
Printer and scanner firmware
Printer and scanner interfaces
Consumable printer components
Flatbed scanner components
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and Printers and scanners have their own installed memory to
Printer Scanner Memory
store information about:
Device settings
Jobs in queue
Scanned images
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The printer and scanner drivers:
Printer and Scanner Drivers
Enable the device to communicate with the computer system.
Control all device-specific functions
Types of printer and scanner drivers are:
PostScript Printer Description (PPD)
Printer Control Language (PCL)
Raster/bitmap
Plotter/vector
Scanner
Ver. 1.0 Session 13 Slide 4 of 34
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Printer and Scanner Drivers (Contd..)
Driver files
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The printers and scanners include built in firmware that:
Printer and Scanner Firmware
Provides the on-board device management interface.
Enables configure printer and scanner functions
Helps monitor and manage print jobs
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Following are the printer and scanner interfaces:
Printer and Scanner Interfaces
Parallel
Serial USB
Firewire SCSI
Wireless
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Consumable Printer Components
Consumable printer components are:
Toner
Ink and ink cartridges
Paper and other media types
Toner Ink and cartridges Paper and other media
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Flatbed Scanner Components
Flatbed scanner components are:
Scanner bed
Scanner cover
Light source
Scan head
Stabilizer bar
Stepper motor and belt
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and Following are the various printer and scanner processes:
Printer Scanner Processes
The Laser Printing Process
The Inkjet Print Process
Thermal Print Processes
The Solid Ink Print Process
The Dot-matrix Impact Print Process
The Scanning Process
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Printing Following are the steps of laser printing process:
The Laser Process
Cleaning
Erasing
Charging (Conditioning) Laser
Writing
Developing
Transferring
Toner supply
g
Fusing
EP drum Fusing unit users
h t d
Corona wire
Charging the drum
heat and pressure
to adhere toner to
paper
Ver. 1.0 Session 13 Slide 11 of 34
Paper source Corona wires
Charging the drum
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Following are the steps of inkjet printing process:
The Inkjet Print Process
Ink dispersion
Ink deposit
Paper advance
Ink is sprayed
onto the paper
Paper
Print head and
reservoir
Melted ink is forced out to
spray against the paper; each
droplet is about one-millionth
of a normal drop
Print head
nozzle detail
Rollers
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Resistor creates heat
that vaporizes some of
the ink from the reservoir
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Following are the steps of thermal printing process:
Thermal Print Processes
In thermal dye transfer printer
Diffuses dye from ribbons
In thermal wax transfer printer
Melts wax-based ink from ribbon
In direct thermal printer
Creates image with heated pins
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Following are the steps of the solid ink print process:
The Solid Ink Print Process
Ink melt
Ink transfer
Image transfer Ink melter Ink reservoir
Print head
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Paper path
Drum
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Dot-Matrix Following are the steps of dot-matrix impact print process:
The Dot Impact Print Process
Pin strike
Ink transfer
Printhead move
Paper Ink ribbon
Letter quality pass
Tractor
Electrical signals from
microprocessor
Print head
Coils Pins
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Electrical signals from
microprocessor
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Following are the steps of scanning process:
The Scanning Process
Document placement
Initialization
Scan
Digitization
Conversion
Recording
Stepper motor
Belt
Scan head and light
source
Object to scan
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and Before installing and configuring printers and scanners, you
d t d t d f ll i
Install Configure Printers and Scanners
need to understand following:
Local and network-based printers
Network-connected printers
The print spooler
The windows print process
Windows print permissions
Printer configuration options
Scanner performance factors
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Network-Local printers are managed by and are generally physically
tt h d t th l l t
Local and Network based Printers
attached to the local computer
Network-based printers are shared print devices that are
managed by a remote computer, called a print server.
Often locally attached
Print queue on local computer
Ver. 1.0 Session 13 Slide 18 of 34
Shared on network
Print queue on print server
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Network-Network-connected printers have built-in network adapter
d d tdi tl t t k bl i
Network Connected Printers
cards and connect directly to a network cable or via a
wireless network interface.
Directly connects to network with onboard
adapter
On-board print server
software
Jobs sent via network
Ver. 1.0 Session 13 Slide 19 of 34
protocol
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Print The print spooler is the Windows system component that
th ti i ti
The Spooler
manages the entire printing process.
Print spooler component are:
Graphics Device Interface (GDI)
Print provider
Print router
Print processor
Separator page processor
Port monitor
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The Print Spooler (Contd..)
Spooler service
Loads
print driver
Writes job
to disk
Transfers job
to device
Schedules
job
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The Windows Print Process
Following are the steps of Windows print process:
1. User prints document
2. Print driver renders print job
3. Print spooler accepts job
4. Print router determines if printer is local or remote
5. If remote, remote print provider sends job over network
Local or
remote?
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The Windows Print Process (Contd..)
6. Print router determines that printer is local
7. Print provider spools job to disk
8. Print processor completes rendering
9. If necessary, separator page inserted
10. Port monitor transfers job to printer
11. Printer produces output
Local
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Windows print permissions are:
Windows Print Permissions
Print
Manage Printers
Manage Documents
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Configuration Options
Following are the printer configuration options are:
Printer Device calibration
Media and paper tray assignments
Tray switching
Font substitutions
Print spool settings
Printer availability
Color management
Printer ports
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Following are the scanner performance factors:
Scanner Performance Factors
Resolution
File formats
Default settings
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Activity 13-4
Activity on Installing a
Local Printer
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Activity 13-5
Activity on Verifying the
Printer Installation
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Maintain and Troubleshoot Printers and Scanners
Before maintaining and troubleshooting printers and
scanners, you need to understand following:
Preventative maintenance techniques
Common printer issues
Common scanner issues
Printer and scanner troubleshooting resources
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Maintenance Techniques
Maintenance techniques are for printer and scanner are:
Preventative Use the printer often to avoid the ink from drying out.
Run the printer’s cleaning utility to clean the printhead.
Run the printer’s nozzle test.
Regularly clean the paper path and the ribbon path using a dry
soft cloth.
Replace the toner cartridge once it gets low.
Dust the scanner often.
Clean the glass bed of the scanner with a cloth and cleaner.
The cleaner the glass bed of the scanner, the clearer your
images will be.
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Common Printer Issues
Common printer issues are:
Jobs are in print queue but do not print
Printer doesn’t print the way the user expects it to print
User can’t access network printer
Print output is garbled
Print jobs never appear in print queue
Other sporadic print problems
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Common Scanner Issues
Common scanner issues are:
Scanner and computer do not communicate
General power or hardware problems
Scanner does not respond when buttons are pressed
Scanning software does not run properly
Scanner image quality is not correct
Scanner is slow
Specific scanner errors
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Printer and Scanner Troubleshooting Resources
Printer and scanner troubleshooting resources are:
Extension magnet
Test patterns
General diagnostic utilities
Device documentation
Manufacturers’ websites
Software vendors’ websites
Error logs and reports
Service logs and reports
Troubleshooting principles
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Summary
In this session, you learned that:
Printer and scanner have various components, such as
memory, driver and firmware.
Each printer and scanner have specific printing process.
How to install and configure printer and scanner.
Preventative maintenance techniques and networking tools
help maintain and troubleshoot network connections.
What are the common printer and scanner issues.
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