What is the principle of another inkjet and laser printer? Yak drukuє jet printer. Robotic principle of a laser printer Laser printer principle of a laser printer

Includes seven last operations from the stem of the given image on the archway of the paper. This is a technological process that can be divided into two main stages: the application of the image and its fastening. The first stage of dressing from the robot of the cartridge, the other counter to the block of thermal closure (pichtsi). In the result, in a few seconds, on the white archway paper, we will recognize the image that we should be tricked into.

So, how can you go for such a short hour in the printer? Let's get rid of it.

Charge

Nagadaєmo, the toner is a dibnodispersed substance (5-30 microns), this particle can be easily taken up by any kind of electric charge.

In the cartridge, the roller charge will prevent the transfer of negative charge to the drum unit. If the roller is pressed against the drum, if the roller is wrapped in one straight line (at the same time, the negative static charge will appear on the drum), it will wrap itself in the drum.

In this way, the surface of the photodrum has a negative charge over the area.

Exposure

In the offensive process, the display of the image on the drum is displayed.

Tse to see the laser. When the laser light hits the surface of the drum, there is a negative charge (the point becomes neutrally charged). In such a rank, the laser cut the shape to the image behind the given coordinates at the program. Only in quiet places it is necessary for children.

In this way, we will recognize the exposed part of the image as negatively charged points on the surface of the drum.

Development

Then on the display of the image on the surface of the drum, a thin thin ball is applied behind the additional development roller to apply the toner. Particles of toner take up a negative charge and form on the surface of the drum.

Postponed

The next step is to transfer the negatively charged toner image from the imaging drum to a clean paper.

Tse vіdbuvaєtsya after the lock of the roller of the transferred image from the arch of the paper (the arch to pass through the roll of the transferred and the drum). The transfer roller has a high positive potential, the result of all negatively charged toner particles (like a formed image) is transferred to the arch paper.

Close

The next step of the laser friend is to secure the image from the toner to the arch of the paper in the thermal closure block (near the oven).

On the day, the process is "locked" on the porch. A sheet with toner, passing through a thermal roller and a pressure roller, is subject to thermal pressure (temperature and vice), as a result of which the toner on the sheet gets stuck and becomes durable until the latest mechanical injections.

On our little one, Wee Bachite thermoed that tight video. Thermal vikoristovuyutsya at a number of laser-type devices. A halogen lamp is stuck in the middle of the thermal valve, like a heating element.

The most basic models of laser-type devices are used to replace the thermal valve with a thermofluid (like a heating element). The difference between them is that with a robotic halogen heating it takes more than an hour. This is because of the fact that the equipment with the thermofluid is even worse before the mechanical injections. third-party items(Skrіpok, staples from the stapler) on the archway paper. It can be done with the help of the heat pump itself. Vona is even more sensitive to shit.

Purified

Fragments during the whole process on the surface of the drum will not be left great number toner, a squeegee is installed in the cartridges (cleaner) for cleaning of excess toner microscopic particles to the drum shaft.

Scrolling, the shaft is cleaned. The filling powder is consumed in the hopper from the used toner.

Taking charge

At the end of the stage, the imaging drum shaft is charged with the roller. Tse produce before the card of a negative charge is known on the surface of the drum (until the moment on the surface there was a negative charge, so it is neutral charged - the stench and the projection of the image).

In such a rank, the roller charge will know about the surface of the drum unit, and the negative potential will be generated.

So the cycle will end with one arkush.

Visnovok

Thus, the technology of the laser friend includes seven last stages of transferring and fixing the image on the porch. On modern devices, such a process for one image on the A4 porch takes less than a second.

When the replacement was made, internal parts, such as a drum, a roller, and a magnetic shaft were worn out. The components are located in the middle of the cartridge, and you can smack it on the little thing pointed at. Through the wear and tear of the elements, it is significant to lose the quality of the friend.

Trochi about the history of the laser friend

Well, we are all about the rocketing of laser technology. Wonderfully, ale the technology of a laser friend appeared earlier, for example, the same technology of a matrix friend. Chester Carlson in 1938 Vinaysov method of Druck, which I call Electrography. Win stashed in copy machines at that hour (60-70 years of the past century).

The very opening and opening of the first laser printer will be punished by Gary Starkweather. Він був spіvrobіtnik from Xerox company. Yogo idea came from the victorian technology of the copying attachment for the stem of the printer.

1971 rocky for the first time first laser printer company Xerox Win named Xerox 9700 Electronic Printing System. Serіyne virobnіstvo bulo nalogodzheno pіznіshe - 1977 rock.

At the printer, which is based on laser technology, everything is done for the development of static electricity. Yak tse pratsyuє? The imaging drum of the cartridge uses the same image shape. At the advanced stage of the image formation, the imaging drum sticks with the toner and into the dot, de-energizing the laser and changing the charge, the toner sticks. Following the same principle, toner is stuck to the paper from the drum, and then stuck at the so-called "pichtsi". Papier is called a lukewarm kind of rude. Do not be fooled, you already have trochas oholola.

Report on the process to a friend on a laser printer

If the photosensitive drum is wrapped around, a positive charge will form on the surface, which will be applied to the photo roll with the help of a laser exchange. The positive charge attracts the toner particles, which charge negatively, and the stench sticks to the drum surface.

Arkush paper charges positively and for an hour the process is going to pass through the photo, wrap around. Negatively charged particles of toner are transferred from the drum to the arch paper, in this order of the image they are transferred to the paper. Dal the toner, which is resting on the porch, will lock itself in the flow of heat.

When viewed from a friend on dot matrix and inkjet printers, the image is transferred to papier in a row, with a laser printer, text on A4 format archives is formed in just 3 revolutions of the imaging drum.

Laser printers are based on other systems, as they can be copied. In copiers, a special lamp is used to transfer the image from the copied sheet to the photosensitive surface of the drum near an electrostatic charge. The imaging drum re-creates an optical image, turned off with a light, is displayed from the copied image, its electrostatic equivalent, which attracts particles of toner to the surface of the drum, so that a residual charge may be removed.

However, a laser printer is not a perfect image, instead of a matrix in its memory, it can be stored from 1 to 0, so that the image is transmitted. At a black-and-white friend, 1 transmits a signal to the microprocessor and directly from the laser to the imaging drum. If you touch the surface of the drum, then a positive charge will form, and negatively charged particles of toner will stick to the drum in a whole lot of times. Apparently, 0 is not transmitting a signal and there is no charge on the surface of the drum; About those who like to amuse themselves in the presence of a friend, read the article -

Today it is also easy to get a life without manual attachments. It is simply necessary to transfer the information to the paper nose. Schoolchildren need additional education, students - diplomas and courses, spy workers of offices - to document an agreement.

Robotic inkjet printer principle

Now, before you can see it, it’s like a working printer. Varto immediately obmovitsya, as for the friendliness of the trochs of the laser. However, the part of the string printer is suttєvo lower. Tsey view the printer is wonderfully suitable for home. It’s easy to get around him, because it’s simple at the servants.
If you talk about the principle of robotics of laser and string printers, then the stench dramatically changes. The main feature of the pole is in the technology of feeding chornil, as well as in the annexe of the equipment part. Negotiable for a cob, like a working printer.

The principle of a robotic, flexible extension of a field in an offensive one: the image is formed on a special matrix, for which it can be played on the canvas with a victorious black corn. There is one more type of inkjet printers, attached to these cartridges. Cartridges are installed at a special block. In the case of the design, the chornilo is transferred to the duct matrix behind the auxiliary duct head. Write the matrix to transfer the image to papyr.

Zberigannya chornila that is applied to the canvas

Є a number of ways to apply ink on the canvas:

- Method of gas bulbs;
- P'єzoelectric method;
- The drop-on-demand method.

P''zoelectric method of transferring the stem of ink dots on the canvas before the hour of vikorystannya p'''zoelement. The tube should be pressed and squeezed again; The method of gas bulbs is also called the method of injection bulbs. Playback on the canvas will be overcast for high temperatures. The dermal matrix nozzle has a heating element. Fragments of seconds are spent on heating such an element. Pislya heating the mischief, which is done, is transferred through the nozzles to the canvas.

The drop-on-demand method also contains gas bulbs. However, there are more optimization methods. The speed and strength of each other have grown significantly.

Chornilo in inkjet printer can be used in two ways. The first way to transfer is the presence of an adjacent reservoir, which can be fed to the other head. In another way, a special cartridge, which is placed in the head, is used, is used for storing the chornil. If you replace the cartridge, you will be able to remove the manual head itself.

Vikoristannya jet printers

Particularly the popularity of the printer has grown due to the fact that in these outbuildings the power of the colorado is realized. The image in case of a color friend is folded for a rakhunok one on one basic tones, which may cause a rise in the world of saturation. The main set of colors is also available for the CMYK abbreviation. Until new, there are such colors: black, blakitny, purple and zhovty. A selection of victorious sets of three colors. Until now, all foods were included in the list, except for the black one. If you use a blakit, yellow and purple colore at 100% weed, all one does not go down to the black color, it is either gray or brown. For the reason, it was violated to add to the main set of black colorah.

The jet printer: features of the robot

As the main indicators of the printer's robotics, you can look at such parameters as the performance of the other, the noise characteristics, the reliability and the quality of the other. Easy operation of the inkjet printer.

The principle of the robotics of such a printer is already discussed. Chornilo is served for papir through special printers. The strumenevy printer is still very quiet on the screen, for example, on bare printers, in which the ink is applied to the shock-mechanical process. You don’t feel like a different jet printer, it is possible to reduce the noise to the mechanism by moving different heads. If we talk about the noise characteristics of inkjet printers in the most efficient way, then with such a built-in robot, the noise does not outweigh 40 decibels.

Now let's talk about the speed of the friend. Strumeneviy printer drukuє nabagato shvidshe, nіzh holchast. However, from such an indicator, it is possible to lay down a friend's quality without a second. We have a lot of sense, who has more efficiency for a friend, who has a lot of quality. With the vibration mode of a high-quality friend, the process is meaningfully adjusted. Farba on the canvas is applied retally. Such a printer is easy to use from an average price of 3 to 5 pages per piece. At the current drukuvalny annexes, the indicator has been increased to 9 sides per chilin. For other color images, it takes more than an hour.

One of the heads of the inkjet printer is the font. For the quality of rendering to the font, a different inkjet printer can be adjusted, if not with a laser. Painted yakosti for a friend can be done for an hour on a weekly paper. Golovne - vibrate the papir, which should be taken by the doctor. The high quality of the image can be reached, the vikoristovy and papir from the thickness of 60 to 135 g / m2. Dobre yourself having recommended papir for a copier. Її thickening to 80 g / m2. In order to speed up the process of dropping blackening, the function of printing paper has been implemented in the printers. Unimportant to the absolutely new principle of robotics of a struma and laser printer, with the victorian given attachments, one can reach the same quality.

Papir for druku

It is a pity that the streamen printer does not go for a friend on roll noses. It is also not a sign of guilt for the stem of the speeches: it is possible to get a vicarist for a bagatorazovy druk.

Incomplete inkjet printer

As it was said before, the strumenev printers use the additional matrix. The image for an hour on the inkjet printer is formed from specks. The most important and the best element in the whole attachment is a handy head. To change the dimensions of the attachment of a large amount of firm, insert the drum head into the cartridge. Strumeneviy and laser printer are based on the principle of a friend. Until recently, robotic inkjet printers can bring the following moments:

1. Low efficiency for a friend;
2. Zasikhannya blackened with trivial downtime
3. Visoka partiality and maliy resource of vitratic materials

Perevagi of jet printers

1. Optimal performance price / quality. Bagato koristuvachiv at the vibration of a drukuvalny attachment is the most suitable for the type of printers
2. The printer has a modest size. It’s possible to grow and navigate a small office. Do not dissolve any non-trivialities of koristuvachev.
3. Possibility of self-refilling of cartridges. You can just buy black stuff and read it in the book of koristuvach, as the correct gas station.
4. The availability of the system and the uninterrupted supply of ink. Such a system will allow significant reduction of vitrati for a friend for great commitments.
5. Visoka Yakity other images
6. The Great Vibir of Vikoristovuvanikh drukovanikh noses

Laser printer

With a laser printer, we rely on respect for a special type of handwritten possession, designed to be applied to a text or an image on paper. The whole type of possession is even more independent from history. The principle of robotics of the laser drukuvalny attachment became negotiated only in 1969. Science until the end of the day was carried out by a stretch of rock.

For a thorough understanding of the principle of robotics given to the device, the powerless methods have become known. The first copy of the device in the world, which is a vikorist for the opening of the video beat, a laser mark, appeared in 1978. Tsey pristіy little big size, that part of it went off scale. A dozen hour later, the Canon company was busy with the box.

The first desktop laser printer appeared in 1979. Tse called before that other companies started to optimize and upgrade new models of laser printers. The principle itself does not change with one's own friend. Vidbitki, otrimanі pіd hour vikoristannya of a laser printer, a lot of characteristics. I’m not afraid of vizvitannya chi erasure, the stench is not afraid of vologues. The image, rendered for the help of a laser printer, is very stylish and bright.

Robotic laser printer principle

The principle of laser printer robotics is briefly introduced. The image for an hour or so on a laser printer is applied at a stage. A special powder - toner - is melted together with the injected temperature. Vin stuck to the paperwork. When using a special scraper from the drum, one recognizes the non-corrosive toner and changes to the accumulated toner. The top of the drum is polarized with a corona wire. An image is formed on the surface of the drum. Then the drum collapses on top of the magnetic roller, which contains the toner. Toner adheres to the drum cartridge. The drum is dripping off the paper and overlaid on the new toner. Then the papier pass through a special rough, in which powder melts at a high temperature and sticks to the paper.

Color laser printer

From a black-and-white process to a friend on a color printer, it is displayed on a list of copies. When there is a decrease in the number of symptoms in the singing pair, it is possible to dissolve the main colors. Call on laser printers for skin colora to be victorious. In a multitude of fields, the main reason is. Druk color images on such a printer will display a number of steps. A collection of images can be analyzed to form a charge. How long does it take to be the last of the operations, when a black-and-white friend is involved: a sheet of toner is passed through a coarse paper, the powder melts and is stored with a paper.

Perevagi laser printers

1. Visoka shvidkist friend
2. Vividness and quality of the image
3. Low ownership
4. Visoka quality

Incomplete laser printers

1. Ozone is seen in the process of functioning. Drukuvati on a laser printer is possible only in the countryside, well, you can check it out.
2. Thunderousness
3. Visoka energy service
4. Visoka price

Visnovok

Having analyzed the principle of robotics and the basic characteristics of jet and laser printers, it is possible to say that the first type of attachments should be more suitable for a home victorian. Stink may be available and small size. Laser printers are most suitable for an office, because a large number of documents are required.

Color laser printers are actively repaired by the printer. Even though a color laser printer is still rocky for more organization and it is more difficult for some people, then buying a color laser printer at once can allow a wide range of color laser printers. To produce a large growing park of color laser printers before the interest grows from the side of technical support services.

Principles of color druku

In printers, like in the polygraph, subtractive color model, and not additive, as in monitors and scanners, for which color and output are used for three main colors - R(chervonia), G(greenery), B(Blue). The subtractive model of coloropod is called so that, for the approval of any kind of appearance, it is necessary to take out the warehouse from the white color. In printers for rejecting whether it is like the main colors of the vikoristovuyut: Cyan(blakitny, birusovy), Magenta(purple), Yellow(zhovty)... Qia kolirna model named CMY for the first letters of the main colors.

In a subtractive model, when changing two or more colors, additional colors go for the additional chasing of some light colors and images. Blakitna farba, for example, glaze a red color and add greenery and blue; purple farba clayє of greens of color and vidbivaє of chervoniy and blue; and zhovta farba glazed blue color and added chervonia and greens. With the change of the main warehouse subtractive models, it is possible to correct the different colors, which are described below:

Blackitny + Zhovtiy = Zeleniy

Purple + Zhovtii = Chervoniy

Purple + Blakitny = Blue

Purple + Blakitniy + Zhovtiy = Chorniy

Slid means that from the removal of the black color, it is necessary to change all three warehouses, so that. Blakitny, purple and zhovty, protects the bright black color in such a rank is practically unwise. Otrimivaniy kolіr will not be black, but sooner brute-syrim. For usunennya such a shortage to three main colors can be added another one - black. This expanded color model is called CMYK(C yan- M agenta- Y ellow-blac K - blakitny-purple-zhovty-chorny). The introduction of the Black Collar allows for a significant change in the quality of the Color transmission.

HP Color LaserJet 8500 Printer

For that, we have discussed zagalny principle encourage the robots of color laser printers to read reports about their attachments, mechanisms, modules and blocks. The best price for the application is like a printer. Let's take such a stock with a Hewlett-Packard Color LaserJet 8500 printer.

The main characteristics of yogo є:
- Building construction: 600 DPI;
- the speed of the “color” mode: 6 sides / min;
- the quality of the friend in the “black-and-white” regime: 24 sides / min.

The main institutes of the printer are shown in Fig. 5.

The formation of the image is repaired in order to know (neutralize) surplus potential from the surface of the drum. Try to get the offensive charge of the photodrum to rіvnomіrnіshim, tobto. before charging, I will recharge. Taking over the surplus potential, go along the way by listening to the entire surface of the drum with a special lamp in front of the front (air conditioning) exponentiation, like a linear light (Fig. 7).

A high-voltage (up to -600V) negative potential appears on the surface of the drum. The drum is charged by the corotron at the viewer of the roller from the string-wire gumi (Fig. 8). The corotron is supplied with a change in sinusoidal form from a post-negative warehouse. The storage room (AC) will secure the equal charge on the surface, and after the storage room (DC) it charges the drum. The level of post-storage can be adjusted when the toner capacity is changed, so you can search for additional printer driver by adjusting it through the kervane panel. The reduction of negative potential can be brought about to the reduction of gustini, tobto. to a bright image, to a decrease in potential - navpaki, to a bright (dark) image. The photodrum (internal metal base) is made of obov'yazkovo "grounding".

When playing on the surface of the drum, the image of the charged and non-charged bottles is flashed by a laser exchange. The light beam of the laser, poured on the top of the drum, unloads the dilyanka. The laser will light up those drum cartridges, on which there is a toner. These delays, which may be biley, cannot be detected by a laser, and they will have a high negative potential. The slice of the laser is moved along the surface of the drum behind the additional hexagonal mirror, so that it can be wrapped around when it is in the folded laser. Image drums are called electrographic images, because it is presented in the form of invisible electrostatic potentials.

The prikhovane of the elektrographic image will be visible when the passage through the university is shown. The development of the black toner module is stationary and is located at the permanently connected to the drum unit (Fig. 9).

Color development module є carousel mechanism with hand feed of "color" cartridges to the surface of the drum (Fig. 10). Black toner-powder is magnetic one-component, and colored powders are one-component, ale non-magnetic. Be it a toner powder, charge up to negative potential by rubbing that dozing squeegee on the surface of the developing roller. For a rise in the potential and coulomb interactions of charges, the negatively charged toner particles are attracted to the quiet photodrum cartridges, which are discharged by a laser and displayed through the cartridges with a high negative potential. quietly, but not detected by the laser. At the skin moment, it will take an hour to develop with toner only for one color. At the moment, show on the developing roller to feed the toner transfer from the developing roller to the drum unit. Qia napruga є wry sprung rectangular form with negative post-warehouse warehouse. The level of post-storage can be adjusted by changing the toner strength. After the end of the procedure for developing the image on the drum becomes visible, and it must be transferred to the drum.

To that, the next step at the front of the image is the transfer of the revealed image, the drum is transferred. Tsey stage is called the stage of the primary transfer. Transferring toner from one drum to the first one is carried out with additional electrostatic potential differences, so that. Negatively charged toner particles are responsible for being attracted by the positive transfer potential of the drum surface. For the whole on the top of the drum, the transfer is given a positive pressure of compensation post-struma from a special liveness dzherel, the result of the entire surface of the drum has a positive potential. In case of a povnokolorovuyu druku, the replacement of the drum, the transfer is gradually reduced, because If the skin passages, there is a small amount of negatively charged toner on the growth drum. First, the toner is easily transferred and rubbed over the already dry toner, and the transfer will be improved with the new skin color. The sequence of the formation of the image is shown in Fig. 11.

In the process of transferring toner to the drum, some toner particles may be deposited on the surface of the drum, and the stench is visible, so do not put the image further away. To see the surplus of toner in the printer є a unit for cleaning the drum unit (div. Fig. 17). The storage module has a special shaft - a penzel for checking the toner charge and the imaging drum - it will reduce the strength of the toner to the imaging drum. There is also a traditional cleaning squeegee, which scrapes toner from a special bunker, de-win and save until, docks, the cleaning module will not be replaced or there will be no purifications.

Then the imaging drum will start charging again (after the front discharge), and the process will be repeated until the docks on the drum are transferred, the image of the same color will not be formed again. To that, the size of the drum is transferred to increase the size of the drum, tobto. in this model of the printer, the ring drum is available in A3 format (420 mm). For the application of toner of one color, the process of forming the image is repeated over the same period, so that the development of the block of the color is victorious. For the victorian of the іnshiy developing university, the carousel mechanism turns to tasks and drives the "new" shaft to the surface of the drum. In such a rank, when a color image is formed, it is stored from a number of warehouses, the drum is rotated when it is transferred, and on the skin back until the last toner is supplied with a toner of the color. At the same time, the powder is applied with a yellow color, sometimes a purple one, sometimes a black one, and a black powder is also applied. In the result, on the transfer drum, a visible color image appears, which can be stored in particles of a variety of color toner powders.

In addition, when the toner powder appears on the surface of the transfer drum, it must pass through the block before the charge. The whole block (Fig. 12) є by pulling a corotone, for which a change in the sinusoidal form (AC) with a negative post-storage (DC) is supplied. I try to sprinkle the toner powder before charging, tobto. This negative potential grows, which is more effective when transferring toner to papyr. In addition, a supplementary effort is made to change the positive potential of the transfer drum, so that the toner is correctly spaced on the transfer drum and the toner is changed. As a result of the whole - more precisely the creation of new colors. The drum of the transferred toner is fed to the additional charge, tobto. on the very cob, the image is being formed. When the new toner powder is applied, the additional charge will be set to the minimum value, and if the new skin color is applied, the tension will increase. The maximum amount of additional charge is supplied for an hour when black toner is applied.

Distantly visible from the drum, the transfer of ma buty is transferred to the papir. The process of postponing is called secondary postponing. Secondly postponed to stay with one more corotron, visonanim at the viglyadі of the transport belt (Fig. 13). The toner changes to papyr injected with electrostatic forces, tobto. for the increase in the potential for toner-powder (negative) and the corotron of the secondary transfer, for which a positive voltage is supplied. So, as the second postponed, it’s just when the drum wraps are transferred, the transport belt of the corotron is guilty of paying the cigarettes for once, if all the colors are applied, tobto. before an hour after the fourth turn, and until the end of the hour, the belt is in this position, the paper does not jerk around the drum.

In such a rank, the transport belt for the hour of the opening of the image of the descents downwards, and not to stick to the transferred drum, and at the moment of the second transferring, the drum is burned down. Changing the transport belt of the corotron is activated by an eccentric cam, which is driven into the electric clutch by the command of the microcontroller (Fig. 14).

With a secondary transfer, the paper can be attracted to the drum by transferring it to the rakhunok of the development of electrostatic potentials. This may be the reason for winding the arkusha paper on the drum and as a matter of fact until the paper is closed. To prevent such a manifestation at the printer's warehouse є the system for displaying the paper and the name from its static potential. The system is a corotron, for which a change in the sinusoidal form with a post-positive warehouse is supplied. The roztashuvannya corotron schodo paper and relocated drum is shown in Fig. 15.

At the stage of secondary transfer, the toner particles are not transferred to the papier, but are deposited on the surface of the drum. The particles didn’t block the stem of the offensive arc and didn’t create the image, it was necessary to clean the drum for transferring and see the excess toner. Drum cleaning carried over є Finish in a folding process. For the whole procedure, there is a special cleaning roller, a drum unit and a drum cleaning unit. The cleaning of the drum is carried over to the point of zd_ysnuvatisya as it is, deprived of the second transfer, tobto. the cleaning system is guilty of keruvatis similar to the transferred corotron. As long as the image is open, the cleaning system is not active, and if the transfer of toner to the paper is repaired, it must be pressed in. The first step of cleaning is to recharge the excess toner powder, tobto. Its potential to change from negative to positive. For tsiogo zastosovutsya roller clearing, for which a sinusoidal change is supplied from a post-positive warehouse. Then the roller is pressed to the surface of the drum for an hour of cleaning, and during the process of the image it appears. The roller is swirled with an eccentric cam, which is driven by a solenoid at its side (Fig. 16).

If the toner is positively charged, the toner is transferred to the drum unit; Also from the surface of the drum unit, clean the toner with a cleaning squeegee to the drum cleaning unit (Fig. 17).

The end of the povnokolorovogo image fixing the toner on the porch for an additional temperature and vice. The arkush paper passes through two rollers to the fixation unit (pits), burns up to a temperature of 200 ºС, the toner melts and is pressed into the surface of the paper. To prevent the toner from sticking to the oven, negative pressure is applied to the heating shaft, in addition to the negative toner powder being deposited on the paper, and not on the Teflon shaft.

We have looked at the principle of robotics in less than one printer from one company. Some vyrobniks can use this principle to formulate images and technical solutions when prompted by printers, while all decisions will be even closer to quiet, as soon as they appear earlier.

Storinka 2 z 2

Have statti look principle diy that pristіy happy laser printers. Vona vidkriva gray articles, baptized principles that problems laser pay.

The image, which can be used for the help of modern laser printers (as well as matrix and string printers), is stored in dots. The less the point and the more often the stench of the rosette, the more the brightness of the image. The maximum number of points, as the printer can be individually nipped at 1 inch (25.4 mm), is called a separate building and is characterized in dots per inch, while the spaced size can be 1200 dpi and more. The quality of the text, handled on a laser printer with a 300 dpi format, is approximately the same as that of a typographic one. However, if the side is to take revenge on the little ones, for to take revenge on the gradation of the gray color, then for the removal of the clear graphic image, it is necessary to separate the building not lower than 600 dpi. When the printer is distributed with 1200 dpi, the display should be as good as photographic. It is necessary to have a large number of documents (for example, more than 40 arcs per day), the laser printer seems to be a single smart vibration, the chips for modern personal laser printers with standard parameters for the size of the building is 1 600 dpi.

PRINCIPLE OF LASER PRINTER OPERATION

The first laser printer was presented by Hewlett Packard. In the new boulevard vikoristany, the elektrographic principle of the stem image is the same as in the copier apparatus. The visibility was due to the method of exposure: in copier devices it was possible to look for an additional lamp, and in laser printers the light of a lamp replaced that of a laser.

The heart of a laser printer is a photoconductive cylinder (Organic Photo Conductor), which is often called a handy photodrum or a drum. On the other hand, there is a transfer of the image on papir. The photodrum is a metal cylinder, we will cover the thin film of the photosensitive guide. The top of such a cylinder can be protected by a positive or negative charge, which can be saved until the docks are not illuminated. As soon as a part of the drum is exponential, it’s a bit of power, and a charge of glass from the illuminated dilyanka, setting the uncharged zone. The key moment in the mind is the principle of robotics in a laser printer.

The most important part of the printer is a laser and an optical-mechanical system of mirror and lens, which changes the laser over the top of the drum. The small-sized laser generates even thinner light. When viewed from a mirror, it is possible to wrap around (change the shape of a hexagonal shape), and then switch over the surface to the photodrum, indicating the charge at the point of exposure.

To remove the point image, the laser must be pressed in and seen behind the aid of a microcontroller. Mirror, how to wrap around, rozgortaє in the viglyadі row of prikhovanny image on the surface of the drum.

When forming a row, a special small dvigun rotated the drum formed by an offensive. Tse zsuv vіdpovіdaє virіshuyuchіy printsatnostі of the printer vertically and set to become 1/300 or 1/600 inch. The process of setting the image on the drum is formed into a raster on the monitor screen.

There are two main ways of the front (primary) charge of the surface of the photocylinder:

Ø for the help of a thin dart, or a mesh, a yak is called a "corona wire". Visoka spruce, to be supplied to the wire, to bring the ionized area around the corner, as it is called a crown, and give the drum the necessary static charge;

Ø behind the front charged gum roller (PCR).

Also, invisible images are formed on the drums as statically charged points. So far?

ADDITIONALCartridge

Before we tell you about the transfer process and fixing the image on the paper, you can open the cartridge for the Laser Jet 5L printer from Hewlett Packard. For a common standard cartridge, there are two main displays: display for used toner and toner display.

Basic design elements for used toner:

1 - Drum(Organic Photo Conductor (OPC) Drum).Є aluminum cylinder, covered with organic light-sensitive and photoconductive material (zink with zinc oxide), which is a building image that can be applied by laser exchange;

2 - Shaft primary charge(Primary Charge Roller (PCR)). I will preserve the equal negative charge of the drum. Vykonaniy from the strum-conductive gum and foam rubber base, applied to the metal shaft;

3 - « Viper» , squeegee, neatly lezot(Wiper Blade, Cleaning Blade). Clean the drum because of excess toner that has not been transferred to the paper. Structurally, vikonaniy at the viglyadі metal frame (stamping) with a polyurethane plate (blade) at the end;

4 - Lesot cleansing (Recovery Blade). Re-curl the area between the drum and the hopper for the toner. The Recovery Blade skips toner, which has spilled onto the drum, in the middle of the hopper, and do not let anyone hang around the ringing straight (from the hopper to the paper).

Basic design elements of toner display:

1 - Magnetic shaft(Magnetic Developer Roller, Mag Roller, Developer Roller).Є a metal tube, in the middle of which there is a non-rugged magnetic core. Toner is attracted to the magnetic shaft, like before feeding a negative charge to the drum before it is fed to the drum;

2 - « Lykar» (Doctor Blade, Metering Blade). It will secure a uniform discharge of a thin ball of toner on a magnetic shaft. Structurally, the stamping at the viglyadі metal frame (stamping) іf the blade at the end;

3 - Ushchilnyuvalne lezot magnetic shaft(Mag Roller Sealing Blade). Thin plate, similar to Recovery function Blade. Overcurve the area between the magnetic roller and toner supply. Mag Roller Sealing Blade skips toner, which is overflowed on the magnetic roller, in the middle of the blade, and the toner spill over the ring;

4 - Bunker for toner (Toner Reservoir). In the middle there is a "working" toner, which will be transferred to the paper in the process of another. In addition, a toner activator (Toner Agitator Bar) is loaded into the bunker - a frame designed for mixing toner;

5 - Seal, check (Seal). A new (or regenerated) cartridge has a toner hopper for sealing with a special seal, which will secure the toner when transporting the cartridge. Before the cob of exploitation, the seal is seen.

LASER PRINCIPLE FOR DRUKU

There is a picture of a cartridge on the little one. If the printer gets in, all the components of the cartridge will be repaired: the preparation of the cartridge must be completed. The whole process is analogous to the process of another, but the laser cut does not fit. Once the components of the cartridge are lost, the printer goes over when ready to go.

When sending a document to a friend, the following processes are performed on a laser printer cartridge:

Zaryadzhannya drum. The primary charge shaft (PCR) is evenly transferred to the surface of the drum to wrap around the negative charge.

Exposure. Negatively charged drum surface is exposed by laser exchange only in quiet times when toner is applied. When the light is injected, the photosensitive surface of the drum often absorbs a negative charge. Thus, the laser exposes to the drum the image at the points of view with a weakening by a negative charge.

Inflicted toner. At all stages, the image on the drum, for the additional toner, will be transformed on the visible image, as it will be transferred to the paper. Toner, which is located on the magnetic shaft, will be attracted to the first surface of the permanent magnet, from which the core is prepared on the shaft. When the magnetic shaft is wrapped, the toner will pass through the crack, which is set by the "likar" and that shaft. As a result, the negative charge is swelled and the drum sticks to the quietness of the drum, like the bullets are exposed. "Doctor" will ensure the uniformity of the toner applied to the magnetic roller.

Postponed toner on the papir. Prodovzhuyuchi turn around, the drum from the images to the images stick to the paper. On the color of the paper, press against the Transfer Roller shaft, which carries a positive charge. As a result, the negatively charged particles of toner are attracted to the paper, on which the image is displayed, the toner is packed.

Close image. Arkush papier with unfixed images will move to the mechanism of fastening, which is two poking around the shaft, between which papirs are stretched. The Lower Pressure Roller is pressed against the Upper Fuser Roller. The upper heat roller, when the toner particles are connected therewith, the toner particles melt and become attached to the paper.

Purified drum. Because a small amount of toner does not transfer to the papier and gets on the drum, it needs to be cleaned. Qiu function of the vison "viper". All toner that has spilled onto the drum should be cleaned with a wiper at the waste toner hopper. With a full Recovery Blade, the area between the drum and the bunker is closed, it is not allowed for the toner to roll on the papier.

"Erasing" image. On the whole stage from the surface of the drum, the image is erased, applied by a laser exchange. Behind the auxiliary shaft of the primary charge, the surface of the photodrum is equally "covered" with a negative charge, which is renewed in quiet moments, devin buv partly from the light.