Working With Printers Chapter 18

Slide 2 of 15Chapter 18 Objectives Identify the different parts of a printer Differentiate between impact printers and non- impact printers Explain the working of dot matrix printers Explain the working of inkjet printers Explain the working of laser printers Assembling a printer Connect a printer to a computer Install a printer driver Troubleshoot printers

Slide 3 of 15Chapter 18 Printers Prints text documents and images on paper Different types of printer are: Printers Impact Printers Non-Impact Printers

Slide 4 of 15Chapter 18 Impact Printers Prints documents as well as graphics Functions similar to electronic typewriters Physical contact is established between print head, ribbon cartridge and paper Dot matrix printer is a type of Impact Printer Dot matrix printer uses a matrix of metal pins on print head to create dots

Slide 5 of 15Chapter 18 Non-impact Printers Known for quite operation as physical contact is not established between head, cartridge and paper Different types of non-impact printers are: Non-Impact Printers Inkjet Printers Laser Printers

Slide 6 of 15Chapter 18 Inkjet Printers Places extremely minute amount of electrically charged ink on paper to create images or text Drops of ink are sprayed through a series of nozzles Uses monochrome as well as color cartridges Can be connected to LPT or USB port Provides high quality print

Slide 7 of 15Chapter 18 Laser Printers Uses a beam of laser for printing Uses static electricity to combine ink powder and paper Consists of a revolving drum/cylinder that is made up of photoconductive material Drum is charged with the help of a charging wire called the charge corona wire Laser Printer

Slide 8 of 15Chapter 18 Attributes of Printer Printers are classified on the basis of the following characteristics Speed – Defines speed at which a printer prints the documents Dots Per Inch (DPI) – Specifies the number of pixel or dots of ink that the printer uses while printing a document

Slide 9 of 15Chapter 18 Structure of Printer Contains parts that accept, support and move paper during the process of printing Printer Parts FeederSupport Edge Guides Cover Output Try Output Try Extension

Slide 10 of 15Chapter 18 Printer Installation Assemble the printer – Connect internal and external parts of the printer Set up printer – Connect printer to the appropriate port on computer Install Printer Drivers – Install printer driver (software that controls operation of printer) in the computer Configure the Printer – Set different settings for the printer

Slide 11 of 15Chapter 18 Printer Ports Standard Parallel Port (SPP) – An obsolete port for printers and was available for the IBM PC and compatible computers built prior to 1995 Enhanced Parallel Port (EPP) – Allows faster data transfer between computer and printer Enhanced Capabilities Port (ECP) – Compresses the data and provides faster data transfer between computer and printer compared to EPP

Slide 12 of 15Chapter 18 Preventive Maintenance - I Preventive Maintenance ensures that a printer will reach its greatest potential Dot Matrix Printers Do not place any electronics items near printer Do not use bad quality ribbons Do not turn the platen head using the knob when the printer is on Use the printer regularly otherwise ribbon will dry out

Slide 13 of 15Chapter 18 Preventive Maintenance - II Inkjet Printers Turn OFF the printer before cleaning Never spray cleaner on the printer itself Use compressed air or a vacuum cleaner to remove dust Remove the tape on the ink cartridge before inserting Ensure the ink cartridge is secure in the cartridge cradle Clean the face of the ink cartridge using a clean swab dipped in isopropyl alcohol Use a swab that has isopropyl alcohol and rub on the underside of the cartridge cradle to clean it

Slide 14 of 15Chapter 18 Preventive Maintenance - III Laser Printers Turn OFF the printer before cleaning Never spray cleaner on the printer itself Use a lint-free dry cloth for cleaning the inside of the printer and the Paper feed guide Store toner in a cool, dry place Clean the corona wire and the roller every time when changing the print cartridge Refilled toner cartridges work fine and save money, as long as they have only been refilled once Do not use envelopes and address labels in laser printers

Slide 15 of 15Chapter 18 Troubleshooting You may encounter different problems when working with the printer such as: General Troubleshooting Printer Driver is not functioning properly Troubleshooting Dot Matrix Printers Troubleshooting Inkjet Printers Troubleshooting Laser Printers

Slide 16 of 15Chapter 18 Summary - I A printer is a peripheral output device that prints images and text on paper Printers are classified into two main groups such as impact printers and non-impact printers The main characteristics of a printer that a buyer generally looks for are: Speed Dots Per Inch Dot matrix printers produce low-quality text and graphics at affordable prices

Slide 17 of 15Chapter 18 Summary - II Impact printers work by banging a print head against an ink- soaked ribbon that is placed over paper that is being printed Carbon-copy printing is an application that requires dot matrix printers Non-impact printers are noiseless as compared to impact printers Inkjet printers and laser printers are the most widely used non-impact printers An inkjet printer functions by placing minute drops of ink on the paper that is being printed

Slide 18 of 15Chapter 18 Summary - III Laser printers function on the basis of static electricity A fine ink powder called toner is used for printing in laser printers Printer driver is a software that controls the operation of the printer