Скачать презентацию PC Maintenance Preparing for A Certification Chapter 18 Скачать презентацию PC Maintenance Preparing for A Certification Chapter 18

10a01e095e091caa8707d6c85285e078.ppt

  • Количество слайдов: 46

PC Maintenance: Preparing for A+ Certification Chapter 18: Working with Printers PC Maintenance: Preparing for A+ Certification Chapter 18: Working with Printers

Chapter 18 Objectives Identify basic printer functions n Distinguish between classes of printers n Chapter 18 Objectives Identify basic printer functions n Distinguish between classes of printers n Explain printer technologies n Explain the laser printing process n Install and manage printer drivers in Windows n View and install Windows fonts n Troubleshoot printer problems n

Basic Printing Functions Receive data from the PC through an I/O interface n Store Basic Printing Functions Receive data from the PC through an I/O interface n Store the data in printer RAM n Convert the data into print instructions n Feed the paper in and out n Store and dispense ink or toner n Transfer the image onto the paper n

Line Printer Print job is still spooling to the printer as the page begins Line Printer Print job is still spooling to the printer as the page begins printing n Requires very little RAM of its own n Examples: Ink-jet, dot matrix, daisywheel n

Line Printer Line Printer

Page Printer Entire page collects in printer RAM, then is transferred to the paper Page Printer Entire page collects in printer RAM, then is transferred to the paper n Requires more RAM than a line printer because it must hold more data at a time n Examples: Laser, LED n

Page Printer Page Printer

Ink or Toner Liquid ink: Sprayed onto paper n Dry toner: Transferred to paper Ink or Toner Liquid ink: Sprayed onto paper n Dry toner: Transferred to paper with electrical charge and then fused (melted) to the paper with heat n Inked ribbon: Pins or hammers strike the ribbon, leaving a mark on the paper behind it n

Impact and Non-Impact n Impact printer strikes a ribbon physically. Only an impact printer Impact and Non-Impact n Impact printer strikes a ribbon physically. Only an impact printer is able to print on multi-part forms (such as carbon paper) n n Inkjet, Daisywheel Non-impact printer does not use physical force to place the image on the page. Multiple copies must be printed individually. n Laser, inkjet, LED, thermal wax transfer

Paper Feed Type Tractor-fed (continuous) n Sheet-fed n Paper Feed Type Tractor-fed (continuous) n Sheet-fed n

Factors for Evaluating Printers Initial cost n Cost of supplies n n n Ink, Factors for Evaluating Printers Initial cost n Cost of supplies n n n Ink, toner, special paper Speed Delay before printing starts n Pages per minute n

Factors for Evaluating Printers n Print quality n Measured in dots per inch (dpi) Factors for Evaluating Printers n Print quality n Measured in dots per inch (dpi)

Factors for Evaluating Printers n Interface n n Parallel, USB, network Paper tray n Factors for Evaluating Printers n Interface n n Parallel, USB, network Paper tray n Number of sheets of input, output Paper feed type (tractor-fed, sheet-fed) n Extra RAM n Page description language (PDL) n

Types of Printer Technology Daisywheel (obsolete) n Dot Matrix n Inkjet n Laser n Types of Printer Technology Daisywheel (obsolete) n Dot Matrix n Inkjet n Laser n LED n Dye Sublimation n Solid Ink n

Daisywheel Earliest type of printer, now long obsolete n Rotating wheel containing all the Daisywheel Earliest type of printer, now long obsolete n Rotating wheel containing all the characters for a font n Tractor-fed n Impact n Inked ribbon n Single-color n Line printer n

Dot Matrix Improved on daisywheel by making multiple fonts possible n Letters formed by Dot Matrix Improved on daisywheel by making multiple fonts possible n Letters formed by metal pins n Inked ribbon n Tractor-fed n Impact n Single-color n Line printer n

Dot Matrix Dot Matrix

Inkjet n Liquid ink dispensed by nozzles in the print head Thermal (bubble jet) Inkjet n Liquid ink dispensed by nozzles in the print head Thermal (bubble jet) n Piezoelectric n Sheet-fed n Non-impact n Multi-color n Line printer n

Laser Solid toner dispensed by electrical charges n Sheet-fed n Non-impact n Single-color or Laser Solid toner dispensed by electrical charges n Sheet-fed n Non-impact n Single-color or multi-color n Page printer n

Laser Printing Process Step 1: Cleaning n Step 2: Charging (Conditioning) n Laser Printing Process Step 1: Cleaning n Step 2: Charging (Conditioning) n

Laser Printing Process Step 3: Writing n Step 4: Developing n Laser Printing Process Step 3: Writing n Step 4: Developing n

Laser Printing Process Step 5: Transferring n Step 6: Fusing n Laser Printing Process Step 5: Transferring n Step 6: Fusing n

Summary of Types Dot Matrix Inkjet Laser Ribbon Liquid Toner Paper feed Tractor-fed Sheet-fed Summary of Types Dot Matrix Inkjet Laser Ribbon Liquid Toner Paper feed Tractor-fed Sheet-fed Line or Page Impact or Non-Impact Color Page Line Impact Non-impact No Yes Some

Printer Interfaces n Legacy Parallel n n SPP (Standard Parallel Port) Bidirectional EPP ECP Printer Interfaces n Legacy Parallel n n SPP (Standard Parallel Port) Bidirectional EPP ECP USB n Network n Infrared (rare) n Legacy serial (obsolete) n

Printer Drivers n Page Description Languages (PDLs) translate between PC and printer n Popular Printer Drivers n Page Description Languages (PDLs) translate between PC and printer n Popular PDLs include: n Printer Control Panguage (PCL), developed by HP for laser printers n Post. Script, developed by Adobe for professional typesetting

Installing a Printer Driver in Windows refers to a driver as a “printer” n Installing a Printer Driver in Windows refers to a driver as a “printer” n You can have more than one driver installed for the same printer, resulting in multiple “printers” in Windows for a single physical unit

Installing a Printer Driver in Windows n Run the Add Printer Wizard Let Windows Installing a Printer Driver in Windows n Run the Add Printer Wizard Let Windows detect the printer, or n Choose from a list n

Printer Driver Maintenance n Remove a Printer n n Set Default Printer n n Printer Driver Maintenance n Remove a Printer n n Set Default Printer n n Delete its icon from the Printers (or Printers and Faxes) folder Right-click icon and choose Set as Default View Driver Properties n Right-click icon and choose Properties

Laser Printer Maintenance Wipe out the inside n Run printer’s cleaning sequence n Adjust Laser Printer Maintenance Wipe out the inside n Run printer’s cleaning sequence n Adjust toner delivery n Change toner cartridge n Change cleaning pad n Clean corona wires n Replace drum n

Inkjet Printer Maintenance Change ink cartridges n Run printer’s cleaning sequence n Inkjet Printer Maintenance Change ink cartridges n Run printer’s cleaning sequence n

Fonts and Typefaces n Resident fonts: built into the printer Built-in fonts: Fonts that Fonts and Typefaces n Resident fonts: built into the printer Built-in fonts: Fonts that come with the printer n Cartridge fonts: Fonts added to the printer via a cartridge plugged into it (rare) n n Soft fonts: files in Windows Screen fonts: Fonts for displaying onscreen n Printer fonts: Fonts for sending to the printer n

Fonts and Typefaces n Outline fonts Scaleable to any size n Each letter is Fonts and Typefaces n Outline fonts Scaleable to any size n Each letter is an outline that can be enlarged or shrunk and then filled in n True. Type, Open. Type n n Bitmap fonts Available only in a limited set of sizes n Each letter is a fully formed graphic n

Fonts and Typefaces n Serif fonts: Tails on letters Easier to read in body Fonts and Typefaces n Serif fonts: Tails on letters Easier to read in body text n Look better in small sizes n More formal look n n Sans-serif fonts: Plain letters Easier to read in headings n Look better in large sizes n More casual look n

View Installed Fonts in Windows Open Fonts window n Double-click a font to see View Installed Fonts in Windows Open Fonts window n Double-click a font to see a sample of it in detail n A indicates bitmap font O indicates Open. Type T indicates True. Type

Install New Fonts in Windows 1. 2. Open Fonts folder Choose File > Install Install New Fonts in Windows 1. 2. Open Fonts folder Choose File > Install New Font

Print Queue n View print queue n Double-click printer icon in Printers folder Print Queue n View print queue n Double-click printer icon in Printers folder

Managing a Print Queue n Pause print queue n n Clear print queue n Managing a Print Queue n Pause print queue n n Clear print queue n n Printer > Cancel All Documents Pause an individual print job n n Printer > Pause Printing Document > Pause Cancel an individual print job n Document > Cancel, or press Delete

Managing a Print Queue n Disable the print queue n View printer’s Properties box, Managing a Print Queue n Disable the print queue n View printer’s Properties box, click Advanced tab, choose Print Directly to the Printer

Troubleshooting Printing Problems n Stalled queue n n Pause and resume queue after deleting Troubleshooting Printing Problems n Stalled queue n n Pause and resume queue after deleting job with error Junk characters in printout Power printer off n Clear queue n Power printer on and try again n If problem persists, reinstall driver n

Troubleshooting Printing Problems n Paper jams Fan paper before inserting in tray n Check Troubleshooting Printing Problems n Paper jams Fan paper before inserting in tray n Check feed rollers n Check for obstructions inside printer (ex. bits of paper) n Use different weight of paper n

Troubleshooting Printing Problems n Illegal operation or general protection fault Pause and resume print Troubleshooting Printing Problems n Illegal operation or general protection fault Pause and resume print queue n Restart computer n Remove and reinstall printer driver n

Laser Quality Problems n Printout faint in some spots Shake toner cartridge gently n Laser Quality Problems n Printout faint in some spots Shake toner cartridge gently n Replace toner cartridge n n Loose or smeared toner n n Check fuser Vertical white streaks n Dirty corona wires

Laser Quality Problems n Gray mist Dirty corona wires n Print density set too Laser Quality Problems n Gray mist Dirty corona wires n Print density set too high n Drum needs replacing n n Horizontal black lines n n Dirty or damaged roller Regularly spaced splotches n Scratched or dirty drum

Laser Quality Problems n All-white page Transfer corona broken n Printer is completely out Laser Quality Problems n All-white page Transfer corona broken n Printer is completely out of toner n n All-black page Primary corona broken n Drum not holding a charge n

Inkjet Quality Problems n Stripes, or one color missing Clean ink jets using printer’s Inkjet Quality Problems n Stripes, or one color missing Clean ink jets using printer’s utility n Run printer’s self-test n n Colors off alignment n Run printer’s alignment utility

Dot-Matrix Quality Problems n Flecks and smudges n n Faint printing overall n n Dot-Matrix Quality Problems n Flecks and smudges n n Faint printing overall n n Ribbon is worn out Faint printing on one side n n Ribbon is too tight Platen is misaligned Missing sections of letters n Pins on print head damaged