ch.11.pgs502-520.js Flashcards
What is a printer?pg502
It is a electromechanical output device that puts information from computer onto paper.pg502
What are impact printers?pg503
Is a printer that uses some form of impact and ink ribbon to imprint on paper and use paper feed mechanism called Tractor Feed. Two types: Daisy Wheel, dot matrix.pg503
How does a daisy-wheel printer work?pg503
It uses a mechanism called a print head that has the daisy wheel with letters on the pedals and solenoid that hammers the back of the letters against the ribbon and paper.pg503 Poor speed 2 to 4 (cps) characters per second. Also very noisy.
How does a dot-matrix printer work?pg504
The print head contains a row of pins. The pins are triggered in patterns to form letters and numbers as the head moves across the paper.pg504 speed starting 72cps and as fast as 1page per second.
What is (LQ) and (NLQ)?pg504-505
LQ is letter quality if it was readable or (NLQ) near letter quality.pg504-505
Do most impact printer have an option to adjust the print head. T or F pg505
True. You can adjust head’s distance to make it darker or lighter.pg505
What type of printer has a reservoir of ink, a pump, and nozzle. That spray ink on a page to form the image?pg505
Inkjet. One of the most popular types of printers used today.pg505
Inkjet printers where referred to bubble-jet printers. T or F pg505
True. Droplets of ink are sprayed on in a very high-definition dot-matrix pattern.pg505
Printer parts are divided into what categories?pg506
Print head/ink cartridge, Head carriage, belt, stepper motor, Paper-feed mechanism, Control, interface, and power circuitry.pg 506
The print head contains what on a ink jet printer.pg506
Many small nozzles(100 to 200). It could be part of the ink cartridge-reservoir of ink and print head.
What are two methods of spraying the ink?pg506
Hewlett-Packard-electricity heating element to expand ink vapor forcing droplet on paper. 2. Epson-piezoelectric element that bends and pushes the ink out and sucks up more ink when bent back.pg506
What does the maintenance station contain?pg506
It contains small suction pump and ink-absorbing pads.pg506
The print head carriage is the component that moves back and forth during printing. T or F pg506
True.pg506
What makes the print head move?pg507
The stepper motor and belt.pg506 Also called carriage motor or carriage stepper motor.
What keeps the print head carriage aligned and stable while it moves and prints?pg508
Stabilizer bar.pg508
