Slide 1: lesson 6 Devices that Output Hard Copy Slide 2: This lesson includes the following sections:
Overview of Printers
Dot Matrix Printers
Ink Jet Printers
Other High-Quality Printers Slide 3: Overview of Printers Categorizing Printers
Evaluating Printers Slide 4: Overview of Printers - Categorizing Printers Printers fall into two categories: Impact printers use a device to strike an inked ribbon, pressing ink from the ribbon onto the paper.
Non-impact printers use different methods to place ink (or another substance) on the page. Slide 5: Overview of Printers - Evaluating Printers When evaluating printers, consider four criteria: Image quality – Measured in dots per inch (dpi). Most printers produce 300 – 600 dpi.
Speed – Measured in pages per minute (ppm) or characters per second (cps).
Initial cost – Consumer printers cost $250 or less, but professional printers can cost thousands of dollars.
Cost of operation – This refers to the cost of supplies used by the printer. Slide 6: Dot Matrix Printers How Do Dot Matrix Printers Work?
Performance Slide 7: Dot Matrix Printers -
How Do Dot Matrix Printers Work? Dot matrix printers are a common type of impact printer.
A dot matrix printer's print head contains a cluster of pins. The printer can push the pins out to form patterns in rapid sequence.
The pins press an inked ribbon against the paper, creating an image. Slide 9: Dot Matrix Printers - Performance Lower-resolution dot matrix printers use nine pins. Higher-resolution models have 24 pins.
Speed is measured in characters per second (cps). Some dot matrix printers print 500 cps. Slide 10: Ink Jet Printers How Do Ink Jet Printers Work?
Performance Slide 11: Ink Jet Printers –
How Do Ink Jet Printers Work? Ink jet printers are an example of non-impact printers.
The printer sprays tiny droplets of ink onto the paper.
Ink jet printers are available for color and black-and-white printing. Slide 13: Ink Jet Printers - Performance Ink jet printers offer speeds of (2 – 4 pages per minute ppm) and resolution (300 – 600 dots per inch dpi), comparable to low-end laser printers.
Ink jet printers are inexpensive and have low operating costs. Slide 14: Laser Printers How Do Laser Printers Work?
Performance Slide 15: Laser Slide 16: Laser Printers –
How Do Laser Printers Work? Laser printers are non-impact printers.
They use heat and pressure to bond particles of toner to paper.
Laser printers are available for color and black-and-white printing. Slide 18: Laser Printers - Performance Laser printers provide resolutions from 300 – 1200 dpi and higher.
Black-and-white laser printers usually produce 4 – 16 ppm.
Laser printers produce higher-quality print than ink jet printers, but are more expensive. Slide 19: Snapshot Printers Snapshot printers are specialized, small-format printers that print digital photographs.
Snapshot printers are fairly slow, and can be more expensive to operate Slide 20: Snapshot printers are popular among
digital camera users Slide 21: Other High-Quality Printers Print shops and publishers use these printers to create high-quality color images: Thermal-wax
Plotters Slide 22: Inkjet Plotter Plotters use mechanical, ink jet, or thermal technology
to create large-format images for architectural or
engineering uses. Slide 23: lesson 6 Review List the three most commonly used types of printers.
List the four criteria you should consider when evaluating printers.
Describe how a dot matrix printer creates an image on a page.
Explain the process by which a laser printer operates.
List five types of high-quality printing devices commonly used in business.