Chapter 21You Will Learn…Main Types of Printers for Desktop ComputingLaser PrintersHow a Laser Printer WorksSix Steps of Laser PrintingSix Steps of Laser PrintingStep 1: CleaningStep 2: ConditioningStep 3: WritingSlide 11Step 3: WritingStep 4: DevelopingSlide 14Step 5: TransferringStep 6: FusingInk-Jet PrintersHow an Ink-Jet Printer WorksInk-Jet CartridgesDot Matrix PrintersDot-Matrix Print HeadPrinter ManufacturersHow Windows Handles Print JobsSlide 24Installing and Sharing a PrinterInstall a Local PrinterSharing a Printer with Others in a WorkgroupSharing a Local Printer with Others in a Workgroup (Windows 98)Sharing a Local Printer Connected to a Windows 2000/XP WorkstationUsing a Shared PrinterUsing Manufacturer’s Printer Drivers on CDSlide 32Using Printer Drivers on the Host PCOther Methods of Sharing Printers over a NetworkTroubleshooting Guidelines for PrintersPrinter MaintenanceGeneral Printer TroubleshootingAddressing Printer Problems Caused by HardwareProblems with Laser PrintersSlide 40Problems with Ink-Jet PrintersProblems with Ink-Jet PrintersProblems with Dot-Matrix PrintersProblems Printing from WindowsSlide 45Troubleshooting Networked PrintersChapter SummaryChapter 21Supporting PrintersYou Will Learn…How printers workHow to install printers and share them over a local area networkHow to troubleshoot printer problemsMain Types of Printers for Desktop ComputingLaserInk-jetDot-matrixLaser PrintersUse electrophotographic processRange from small, personal desktop models to large network printers capable of handling and printing large volumes continuouslyRequire interaction of mechanical, electrical, and optical technologiesHow a Laser Printer WorksPlaces toner on electrically charged rotating drumDeposits toner on paper as paper moves through the system at same speed the drum is turningSix Steps of Laser Printing1. Cleaning2. Conditioning3. Writing4. Developing5. Transferring6. FusingTake place inside toner cartridgeUse components that undergo the most wearSix Steps of Laser PrintingStep 1: CleaningStep 2: ConditioningConditions drum to contain a high electrical chargeStep 3: WritingLaser beam discharges a lower charge to only those places where toner is to goStep 3: WritingData from PC is received by formatter (1) and passed to DC controller (2) which controls laser unit (3)Scanning mirror (4) is turned clockwise by scanning motorLaser beam is reflected off scanning mirror, focused by focusing lens (5) and sent to the mirror (6)Mirror deflects laser beam to a slit in the removable cartridge and on to the drum (7)Step 3: WritingStep 4: DevelopingToner is placed onto the drum where the charge has been reducedStep 4: DevelopingStep 5: TransferringStrong electrical charge draws toner off drum onto paper; takes place outside the cartridgeStep 6: FusingHeat and pressure fuse toner to paperInk-Jet PrintersSmallPrint color inexpensivelyTend to smudge on inexpensive paperSlower than lasersQuality of paper significantly affects quality of printed output; use high-grade paper designed for an ink-jet printerHow an Ink-Jet Printer WorksPrint head moves across paper, creating one line of text with each passShoots ionized ink at a sheet of paper in a matrix of small dotsSeveral technologies are used to form ink droplets (eg, bubble-jet)Uses ink cartridges; best to use two separate cartridges – one for black ink and one for three-color printingInk-Jet CartridgesDot Matrix PrintersLess expensive; lesser qualityImpact printer; can print multicopy documentsPrint head moves across width of paper, using pins to print a matrix of dots on the pageUses a ribbonIf print head fails, more economical to buy a new printer than to replace the print headDot-Matrix Print HeadPrinter ManufacturersHow WindowsHandles Print JobsUses spoolingFor Windows 9x or Windows NT/2000/XP using a PostScript printer•Print job data is converted to PostScript languageFor Windows 9x applications using a non-PostScript printer•Print job data is converted to Enhanced Metafile Format (EMF)continu ed …How WindowsHandles Print JobsFor Windows 2000/XP•A printer language that competes with PostScript is PCL (Printer Control Language)Text data that contains no embedded control characters is sent to the printer as isInstalling and Sharing a PrinterLocal printer•Connects to computer by way of a port on the computerNetwork printer•Accessed by way of a networkDefault printer•The printer Windows prints to unless another is selectedInstall a Local PrinterPhysically attach printer to computer (via parallel, serial, 1394, or USB port, or wireless access point)Install printer drivers•Use Windows Printer window•Use printer manufacturer’s installation program (best way)Test the printerSharing a Printer with Others in a WorkgroupTo share a local printer, File and Printer Sharing must be installedTo use a shared printer on a remote PC, Client for Microsoft Networks must be installedSharing a Local Printer with Others in a Workgroup (Windows 98)Sharing a Local Printer Connected to a Windows 2000/XP WorkstationUsing a Shared PrinterTwo approaches to installing shared network printer drivers on a remote PC•Use the drivers on CD (either Windows CD or printer manufacturer’s CD)•Use printer drivers on host PC (quicker)Using Manufacturer’s Printer Drivers on CDUsing Manufacturer’s Printer Drivers on CDUsing Printer Driverson the Host PCOther Methods of Sharing Printers over a NetworkA regular printer can be attached to a PC using a port on the PC, and then that PC can share the printer with the networkA network printer with embedded logic to manage network communication can be connected directly to a network with its own NICA dedicated device or computer called a print server can control several printers connected to a networkTroubleshooting Guidelines for PrintersRoutine printer maintenanceGeneral printer troubleshootingProblems with laser printersProblems with ink-jet printersProblems with dot-matrix printersPrinter MaintenanceProcedures vary widely from manufacturer to manufacturer and printer to printerMake sure consumables for the printer are on handResearch printer documentation or manufacturer’s Web site for specific maintenance tipsClean inside and outside of the printerGeneral Printer TroubleshootingIsolate the