tailieunhanh - Lecture Introduction to Computers: Chapter 4B - Peter Norton's

Chapter 4B - Printing. This lesson introduces you to the basics of hard-copy output dcviccs. You will learn about the most common types of printers and sec how each creates an image on paper. You will leam the criteria for evaluating different printers and examine some of the specialized printing dcviccs designed for professional use. | McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 4B Printing Commonly Used Printers Impact printers Generate output by striking the paper Uses an inked ribbon Non-impact printers Use methods other than force Tend to be quiet and fast 4B- Commonly Used Printers Dot matrix printers Impact printer Used to print to multi-sheet pages Print head strikes inked ribbon Line printers Band printers Speed measured in characters per second 4B- Teaching Tip Figure on page 163 provides an excellent rendering of how the print head works. Be sure to refer to the image as you teach. Dot Matrix Print Head 4B- Commonly Used Printers Ink-jet printers Non-impact printer Inexpensive home printer Color output common using CMYK Cyan, magenta, yellow, black Sprays ink onto paper Speed measured in pages per minute Quality expressed as dots per inch 4B- Insider information Nearly all of the electronics for the printer is kept in the ink cartridge. Thus, when the cartridge is replaced the printing components of the printer are replaced. Refilling cartridges is OK, but should not be reused more than 2-3 times. Dots Per Inch 4B- Commonly Used Printers Laser printer Non-impact printer Produces high quality documents Color or black and white Print process Laser draws text on page Toner sticks to text Toner melted to page Speed measured in pages per minute Quality expressed as dots per inch 4B- Insider information The laser printer works on a similar process to a photocopier. The first photocopier as we know it today was invented in Astoria NY in 1938 by Chester Carlson and Otto Kornei. Commonly Used Printers All-in-one peripherals Scanner, copier, printer and fax Popular in home offices Prices are very reasonable 4B- Comparing Printers Determine what you need Determine what you can spend Initial cost Cost of operating Image quality Speed 4B- High-Quality Printers Special purpose printers Used by a | McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 4B Printing Commonly Used Printers Impact printers Generate output by striking the paper Uses an inked ribbon Non-impact printers Use methods other than force Tend to be quiet and fast 4B- Commonly Used Printers Dot matrix printers Impact printer Used to print to multi-sheet pages Print head strikes inked ribbon Line printers Band printers Speed measured in characters per second 4B- Teaching Tip Figure on page 163 provides an excellent rendering of how the print head works. Be sure to refer to the image as you teach. Dot Matrix Print Head 4B- Commonly Used Printers Ink-jet printers Non-impact printer Inexpensive home printer Color output common using CMYK Cyan, magenta, yellow, black Sprays ink onto paper Speed measured in pages per minute Quality expressed as dots per inch 4B- Insider information Nearly all of the electronics for the printer is kept .