difficult to imagine modern life without the printer.In schools, print out the script, at the University - abstracts, work - contracts, and even our homes is extremely necessary to transfer on paper certain information.There are several types of printers, they are classified by the type of printing format, size, and even the type of printed material.Consider the principle of printing inkjet and laser printers.
How does an inkjet printer
tried to highlight the principle of printing ink jet printer briefly.Print quality had slightly worse than that of the laser.However, their cost is much lower than the laser.Inkjet printer is ideal for use at home.It is simple to operate and easy to maintain.The principle of printing inkjet and laser printers are markedly different.This is manifested in the technology of the ink supply device and the equipment.So first let's talk about how to print inkjet printer.
Its principle of operation is as follows: in a special matrix of the image is formed, and then this matrix imprints an image on the canvas using liquid dyes.Another type of inkjet printer is equipped with a cartridge that is installed in a special unit.In this case, using the printhead ink is supplied to the print matrix and so it transfers the image to the paper.
ink storage methods and their application to the paper
There are three ways to put ink on canvas:
• piezoelectric method;
• method of gas bubbles;
• method of drop-on-demand.
first method leaves the printing ink dots on the canvas due to the piezoelectric element.With it, the tube is compressed and decompressed, not allowing more than ink on paper to get.
gas bubble, still known as the injected bubbles leave an imprint on the canvas due to high temperatures.Each nozzle of the print matrices equipped with a heating element which is heated in a split second.The resulting gas bubbles pushed through a nozzle and transferred to the components.
method drop-on-demand in the process also uses the gas bubbles.But it is more optimized technology that significantly increases the speed and quality of the modern press.
The inkjet ink is stored in two ways.There is a separate removable reservoir from which ink is supplied to the print head.The second method uses the ink storage special cartridge, also located in the printhead.To replace the cartridge must be replaced and the head itself.
Talk about inkjet printers
Inkjet printers have gained popularity due to special color printing.When printing an image is formed by superimposing the basic colors at each other varying intensity.A set of primary colors is the acronym CMYK.It includes: yellow, magenta, cyan and black.
originally proposed tri-color set, which included all of the above colors other than black color.However, upon application of yellow, cyan and magenta, at 100% saturation, it failed to achieve a black.As a result, a brown or gray color.It was therefore decided to add black ink.
Features of inkjet printer
The main indicators of quality of the printer is the noise print speed, print quality and durability.
Performance printer properties:
- principle of printing - Inkjet.Ink is supplied through a special nozzle and imprinted on canvas.Unlike needle printers, where the application of the ink - a shock-mechanical process, the jet is very quiet.As the printer prints, can not hear, you can only discern the noise of the engine that moves the print heads.The noise level does not exceed 40 dB.
- inkjet printer print speed significantly higher than that of the needle.From this figure also depends on the quality of printing.The principle of printing the printer: the higher the speed, the worse mark.If you choose a high-quality printing, the process slows down and the paint is applied more carefully.High-speed printing of this printer about 3-5 pages per minute.Newer models have increased this figure up to 9 pages per minute.Color printing requires a little more time.
- Font - this is one of the main advantages of an inkjet printer.The quality of the display font can be compared only with a laser printer.Improve print quality can be achieved by the use of a good paper.It must have fast wicking properties.A good image is obtained on paper thicker 60-135g / m².Also nice showed itself for Copier paper with a density of 80 g / m².For a quick-drying ink using the heating function of the paper.Despite the fact that the principle of printing inkjet and laser printers are totally different, high-quality equipment allows to achieve a similar effect.
- Paper.Unfortunately, the inkjet printer is not designed to print on roll media.And to get multiple copies of the need to use multiple printing.
Disadvantages printing inkjet printer
As explained above, inkjet printers print liquid dye using a matrix.The image is formed with dots.The most expensive item in the printer - print head, some firms have built the print head cartridge to reduce the overall dimensions of the unit.The principle of printing inkjet and laser printers are significantly different from each other
A disadvantage of this printer include:
- low speed printing.
- If the printer has not been used for a long time, the ink may dry up.
- consumables are expensive and small resource.
Benefits printing inkjet printer
- attractive price, an ideal balance of price and performance.
- The printer is very modest size, which allows it to place in a small office, without inconvenience to the user.
- cartridges are easy to fill with their own, enough to buy the ink and read the instructions.
- connectivity continuous ink supply system.When large amounts of printing, it will significantly reduce costs.
- high-quality photo printing.
- wide range of print media.
little about laser printer
Laser Printer - a kind of equipment for applying print text or images on paper.The history of this type of equipment is rather unusual.And a marketing approach, in contrast to the ink jet printer, with the creation of which were developed hundreds of scientific concepts.
only in 1969 started to be developed by Xerox printing principle of the laser printer.A few years conducted research work has been used many ways to improve the existing system.In 1978, the world has its first copier, which used a laser beam to create a print.The printer has received an enormous size, and the price did not allow to purchase this unit to anyone interested.After some time, the company became interested in the development of Canon, and in 1979 was released the first desktop laser printer.After a lot of optimization company to take copiers and production of new models, but the principle of printing laser printer has not changed.
how to print a laser printer prints
obtained in this way have a high performance.For them, not afraid of moisture, they are not afraid to erase and fading.The images obtained in this manner, a very high-quality and resistant.
principle printing laser printer briefly:
- Laser Printer does the image on the canvas in several stages.Toner (special powder) is melted by heat and adheres to the paper.
- Raquel (special scraper) removes unused toner from the drum to a drive mining.
- Karonator polarizes the surface of the drum and by electrostatic forces assigns a positive or negative charge.
- image is formed on the surface of the drum by a rotating mirror, which sends it to the right place.
- drum is moved over the surface of the magnetic roller.The shaft is toner which adheres to those parts of the drum with no charge.
- After the drum is rolled across the paper, leaving the toner on the canvas.
- At the final stage of the paper with toner sprayed on it rolled through the stove, where the substance is exposed to high temperatures melted and firmly adheres to the paper.
principle printing laser printer has a lot to do with the technology used in copiers.
Color laser printers and their main differences
process of printing on a color printer is different from the black-and-white by the presence of several shades, which when mixed in certain proportions able to recreate all the known colors.The color laser printers use four separate compartments for each color ink.This is the main difference between them.
printing on a color printer includes the following steps: analysis of the image and its bitmap arrangement of colors and the corresponding toners.Then, the charge distribution is formed.After the procedure is the same as in the black-and-white printing.The sheet passes through the paint oven, where the toner is melted and firmly grasped the paper.
Their advantage lies in the fact that the principle of printing laser printer allows for very thin rays, which discharged the desired areas.As a result, we get a very high quality image resolution.
advantages of modern laser printers
The advantages of laser printers is printing:
- High-speed printing.
- resistance, clarity and durability of prints (they are not afraid humid microclimate).
- High resolution image.
- low printing costs.
Disadvantages printing laser printer
main disadvantages of laser printers:
- During the equipment produces ozone.So, with him to work in a well-ventilated area.
- high power consumption.
- cumbersome.
- high cost of equipment
Based on the pros and cons, we can conclude that inkjet printers are great for home use.They have reasonable price and small size, which is important for many users.
laser printer for offices and other establishments, where a lot of black-and-white print speed is important, and document processing.
