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25 Cards in this Set
- Front
- Back
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Imaging drum |
The imaging drum is an aluminum cylinder coated with particles of photosensitive compounds |
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Toner |
The toner in a laser printer is a fine powder made up of plastic particles bonded to pigment particles |
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Transfer Corona/Transfer roller |
Transfer the image from the photosensitive drum to the paper |
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Pickup roller |
the rubber rollers that take the papers out of the tray |
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Separation pad |
Uses friction to separate a single sheet from other that were picked up |
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A file format that provides an electronic image of text or text and graphics |
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XPS (XML paper specification) |
It is a page description language which can describe a single page or a document containing multiple pages |
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ASCII |
American Standard Code for Information Interchange |
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PCL |
Printed control language is a more advanced language to supersede simple ASCII codes |
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GDI(graphical device interface) |
A windows component used to handle print functions. The GDI uses the CPU rather than the printer to process a print job |
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Scanners |
Used to make digital copies of photos, documents,etc. |
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DPI (Dots Per Inch) |
The higher the dpi, the higher resolution. Having a clear picture of the object. |
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The laser printing process |
1. Processing 2. Charging 3. Exposing 4. Developing 5. Transfering 6. Fusing 7. Cleaning |
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RIP (Raster Image Processor) |
A chip used by the laser printer to translate the raster image into commands to the laser. |
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Raster image |
A dot matrix data structure, representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium. Raster images are stored in image files with varying formats.
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Impact printer |
Printer in which some part of the the printing mechanism physically strikes the page. |
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Non-impact printer |
Printer in which no part of the the printing mechanism actually touches the page; characters/images are formed by spraying ink or transferring toner to the page. |
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Laser printers |
Using a process called electro-photographic imaging, laser printers produce high-quality and high-speed output of both text and graphics. Laser printers rely on the photoconductive properties of certain organic compounds |
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Photoconductive |
Photoconductive means that particles of these compounds, will conduct electricity. Laser printers usually use lasers as a light source because of their precision. Some lower-cost printers use LED arrays instead- Book definition s an optical and electrical phenomenon in which a material becomes more electrically conductive due to the absorption of electromagnetic radiation such as visible light, ultraviolet light, infrared light, or gamma radiation - Google definition |
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Laser |
The laser becomes the writing mechanism of the printer. Any particle hit by the laser on the drum it becomes conductive and its charge is drained away into the grounded core of the drum |
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Toner
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Is a fine powder made up of plastic particle bonded to pigment particles |
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Pigment particle |
A dry insoluble substance, usually pulverized, which when suspended in a liquid vehicle becomes a paint, ink, etc.
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Toner cylinder |
Charges the toner with a negative charge of between 200 to 500 volts |
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Fuser assembly |
A fuser unit is a pair of heated rollers within the printer that fuses the toner onto the paper being printed on. Toner particles are pulled to the paper to create the desired text and images as the paper passes the imaging drum. |
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System boards |
Contains the CPU, the printer's ROM, RAM used to store the image before it is printed
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