Laser printer
Explain the fact laser printer
Stop speed laser printer on several factors, including the example fees density in document printing shop, has fast laser printer can print more than 200 pages per minute monochrome (12000 pages per hour). As for the color laser printer can be fast types of printing more than 100 pages per minute (6000 pages per hour). Among the species of high-speed laser printers are used to print personal documents that are sent to the public, such as utility bills and credit cards, laser printing and compete with lithography or Allithogravy (English: Lithography) in some commercial applications.
Stop cost laser printing on several factors, including the cost of paper and cost powder printing or ink replacement cost - rare - the cylinder carrying the image (in English: Drum) and other parts of perishable such as unit installation (in English: Fuser Assembly) to install the printed image as well as their partstransfer paper through the printer. The majority of printers that contain transfer cylinder is made of plastic be a high cost, but this cost will only appear when you replace the cylinder.
The printer that use duplex printing method - any printing on both sides of the paper at the same time - it helps in reducing the cost of paper and also the space allocated to save it in the printer. Duplex printing was previously available in expensive printers, but now they are used as office printer from the middle class, even though it does not fit the installation of duplex printing unit for all printers. It is worth mentioning that the duplex printing defects they reduce the speed of printing as it becomes paper path through the printer longer than when printing on one side of the paper only.
Compared with laser printer Most types of printer inkjet ink and printer raster you receive data in the form of flow sequentially from computer to the printer where print this data directly in the process of slow and smooth, as may occur to stop the printing process to wait for the printer more data to be printed. In laser printers can not be the process of printing in this way they must be up information to the printer quickly and offline, where you can not for a laser printer to stop temporarily for printing without a gap significantly on printed paper or deviation in alignment printed image, for example.
Therefore data is collected material to be printed and stored in a special memory inside the printer, with enough memory to store data for each point on the page. But the process of Altakran advance of the data this made Laser Printer restricted printing on certain sizes - and small - only of paper, such as the size of the speech (en) and the size er 4 (en), and thus can not laser printers to print Banner length of 2 meters (for example) at once, since there is not enough space in the printer's memory to store this vast amount of data to the image of this size.
The production of the first laser printer by Xerox Corporation when one of its researchers, named Gary Starkweser modifying one copiers produced by the same company, in 1971. To become then a laser printer product brings jobs equal to several billion dollars in favor of Xerox Corporation.
The first commercial application of a laser printer is the IBM model 3800 product in 1976, and which was used to print documents in large quantities such as invoices and letters. It was said about them at the time the phrase "taking up a whole room" in reference to the large size of the stages of production first, before it becomes a tool familiar can be appended computer profile, and still a lot of printers class 3800 in use so far .
The launch of the first laser printer are to work on a PC in 1981 and was one of the model Xerox Star 8010. Despite being innovative in their design but they were expensive ($ 17,000) and بالتاى was not available only to a small number of laboratories and institutes. After the spread of personal computers first appeared laser printer on the table in the public markets and was one of the model HP LaserJet 8ppm, which was launched in the year 1984. Where the engine used model of Canon (Canon) is managed by HP's program. This was followed by several printer other laser printers from companies such as PPG Bruser (Brother Industries) and IBM (IBM) and others
Striking is the role played by laser printers to increase in popularity of desktop publishing and so with Apple Macintosh (Apple Macintosh) for the printer Apple LaserWriter, with the Aldous Big Maker (Aldus PageMaker) in 1985, Using these products became the user can be createdThe documents were needed before that to advanced printing methods
Like most electronic devices took the cost of laser printers to decline over the years. In 1995 the price of the printer from the HP LaserJet model to 2995 dollars, and weighs approximately 32.2 kg. The printer model Apple LaserWriter arrived priced to $ 7000, and was fitted with a processor more powerful and language Post's enabled (Postscript) to characterize the pages, and arrived weighing to 71 pounds (about 31.75 kg) - It was business rules at the factory product for this printer that does not any factor to lift the printer without assistance. The day could buy a similar printer and at higher speeds and with feature duplex printing at a cost of about $ 300, while the laser printer only basic possibilities have cost less than $ 100.
Explain the fact laser printer
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