Laser printer

Without regard to a strong competition from the side of ink-jet printers, modern laser printers allow to attain top quality of printing.

Work of laser printer a process of dry ксерографії, that is based on an electrostatic photo, is the basis of.

Laser printers, except mechanical part, contain serious enough electronics. In particular, on printers memory of high-cube is set in an order not to load a computer and keep a task in memory. On part of printers winchesters are set.

There are also vehicles of class of принтер-копір, or digital копір. They can execute the functions of both laser printer and копіра. Digital копір at first scans an image in memory, and then prints a laser method.The coloured printing is provided by the use of varicoloured toner(LMYK- model). Thus on a copy consistently the toner of different colors of V напилюється result of mixing of powders the coloured copy goes out Toner each kept a color in separate bunker with an own magnetic billow and transmitter In some vehicles a paper is positioned on валі transference and then included in a contact with a photocepter Process recurs 4 times In some vehicles a toner at first is carried on the billow of transference and then on a paper

The high cost of the coloured vehicles is stipulated to those, that some details are presented not in one, but in four copies . More reliable drums are in addition, used for the improved transmission of tints, and also more precisely, than in ordinary vehicles, infeed of paper, as a paper passes on a drum four times.

A sound-level during work of laser printer folds 40 дБ \ mode of off - line is a value yet less than.

Through that that a laser printer is a page printer(id est he forms for printing a complete page, but not separate lines, as matrix or stream) speed of printing is measured in pages on minute

A middle laser printer prints 6-12 pages to the minute the High-performance printers that as a rule used in computer networks, can print to 20 and more pages on a minute.

The discriminability of laser printer for horizontals and vertical lines is determined by different factors

1). a vertical discriminability answers the step of drum and for most printers folds a 1/600 inch(for cheap a 1/300 inch)

2). a horizontal discriminability is determined by the number of points in one "line" and limited to exactness of aiming of laser ray

A laser printer processes those pages, that, naturally, it is related to the greater amount of calculations .Speed of printing is determined by not only work of processor, but also substantially depends on memory that the equipped printer. Volume of memory of laser printer 1 MB are a lower limit, more perceptible is a volume of memory from 2 to 8 Mb. The coloured laser printers have yet greater memory

As a rule, most laser printers can print to the paper o the format of А4 and less than, indeed, printers capable to print to the folias of format АЧ appeared lately. In addition, if before printing to the roll was considered a prerogative only of matrix printers, then now моден of laser printers that also can use for work a paper in a roll appeared at the market.

Some laser printers can print on either side of sheet, and in many expensive models the envisaged possibility of their дообладнання for the bilateral printing.