Printers
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Printers as PDF for free.
More details
- Words: 339
- Pages: 14
Prologic Recruitment Ltd Training Division
A+ Part I Computer Hardware
PRINTERS
Mathew Abraham Prologic Recruitment Ltd.
1
PRINTERS Overview Terminology Basic types - impact – dot matrix - non impact – laser, inkjet Troubleshooting
Prologic Recruitment Ltd.
2
Overview
Prologic Recruitment Ltd.
3
Terminology
Prologic Recruitment Ltd.
4
Printer Connections
Prologic Recruitment Ltd.
5
Print Queue Application Spooling PC Printer
PC
Print Server
Network Printing
Prologic Recruitment Ltd.
Printer
6
Main type of printers Impact - Dot matrix Non-Impact - Laser - Inkjet
Prologic Recruitment Ltd.
7
Impact Printers
Head
15-300 Character/s Near Laser Quality Prologic Recruitment Ltd.
8
Non-Impact - Inkjet Bubble jet Ink droplets put on to page to form texts One or more ink - Black - Cyan-Magenta-Yellow
Prologic Recruitment Ltd.
9
Inkjet – How it works?
Bubble
Prologic Recruitment Ltd.
10
Laser Printer
Crisp text 600 dpi
High Speed 24+ ppm
B&W/Colour
FRU Toner Cartridge
EP (electro photo static) Drum
Prologic Recruitment Ltd.
11
Laser Printer – How it Prints? 6 Steps Cleaning – EP drum is cleaned for any residual toner Conditioning – uniform negative charge of -600v is placed on the EP drum by the primary or charge corona
Writing-100v
Laser writes to EP drum discharging those areas to
Developing –
Transferring –
Fusing-
negatively charged toner is attracted to the areas on the EP drum that were written to by laser Transfer Corona positively charges the paper, which then lifts the image from the EP drum on to the paper. Toner is bonded to the paper through the combination of heat and pressure.
Prologic Recruitment Ltd.
12
Laser Printer – How it Prints? -100v -vely chargeged
2. Uniformly charge -600v 1. Cleaning squeegee
Colour printer Writing takes place 4 times Cyan Magenta +ve charge Yellow Black
Prologic Recruitment Ltd.
Fuser assembly 13
Troubleshooting
Fuser assembly problem Nozzle clogging
Corona wire problem
Scratch on EP drum Laser assembly problem Prologic Recruitment Ltd.
14
A+ Part I Computer Hardware
PRINTERS
Mathew Abraham Prologic Recruitment Ltd.
1
PRINTERS Overview Terminology Basic types - impact – dot matrix - non impact – laser, inkjet Troubleshooting
Prologic Recruitment Ltd.
2
Overview
Prologic Recruitment Ltd.
3
Terminology
Prologic Recruitment Ltd.
4
Printer Connections
Prologic Recruitment Ltd.
5
Print Queue Application Spooling PC Printer
PC
Print Server
Network Printing
Prologic Recruitment Ltd.
Printer
6
Main type of printers Impact - Dot matrix Non-Impact - Laser - Inkjet
Prologic Recruitment Ltd.
7
Impact Printers
Head
15-300 Character/s Near Laser Quality Prologic Recruitment Ltd.
8
Non-Impact - Inkjet Bubble jet Ink droplets put on to page to form texts One or more ink - Black - Cyan-Magenta-Yellow
Prologic Recruitment Ltd.
9
Inkjet – How it works?
Bubble
Prologic Recruitment Ltd.
10
Laser Printer
Crisp text 600 dpi
High Speed 24+ ppm
B&W/Colour
FRU Toner Cartridge
EP (electro photo static) Drum
Prologic Recruitment Ltd.
11
Laser Printer – How it Prints? 6 Steps Cleaning – EP drum is cleaned for any residual toner Conditioning – uniform negative charge of -600v is placed on the EP drum by the primary or charge corona
Writing-100v
Laser writes to EP drum discharging those areas to
Developing –
Transferring –
Fusing-
negatively charged toner is attracted to the areas on the EP drum that were written to by laser Transfer Corona positively charges the paper, which then lifts the image from the EP drum on to the paper. Toner is bonded to the paper through the combination of heat and pressure.
Prologic Recruitment Ltd.
12
Laser Printer – How it Prints? -100v -vely chargeged
2. Uniformly charge -600v 1. Cleaning squeegee
Colour printer Writing takes place 4 times Cyan Magenta +ve charge Yellow Black
Prologic Recruitment Ltd.
Fuser assembly 13
Troubleshooting
Fuser assembly problem Nozzle clogging
Corona wire problem
Scratch on EP drum Laser assembly problem Prologic Recruitment Ltd.
14
