Parameter Print Speed ​​Type of Printer Itself

Types of printers

In this article, I will talk about the types of printers and their differences. We will consider laser, inkjet, SPNC and other types. We will figure out which one to choose for home or office.

What is a printer

A printer is a device designed to print information from a computer onto paper, or, as they say in “computer” language, onto solid media. In this case, the process of transferring information itself is called printing, and the resulting document is a printout.

Today there are hundreds, maybe thousands of printers. They differ in the principle of operation, in the number of colors, in the type of ink and printed material, in their purpose. in general, they cannot be counted in total. And each of THESE types can still have its own characteristics and additional functions.

Today, the so-called all-in-one printer has become widespread, in which a printer, a scanner, a copier, and even a telefax are combined.

Matrix printer

The dot matrix printer mechanism (the oldest type of printing device in use today) was invented by the Japanese back in 1964.

The principle of its operation is, in general, simple. The image on the sheet is created using a print head, consisting of a set of needles (matrix), which are driven by electromagnets.

The head moves line by line along the sheet of paper, and the needles hit it through the ink ribbon, leaving an imprint. a dotted image.

In different devices, the print head can consist of 9, 12, 14, 18 or 24 needles. Of course, the quality is better where there are more needles: more dots. the image is clearer.

Low quality, akin to the work of a typewriter, no longer allows the use of matrix devices in other areas. In addition, among the disadvantages of these printers are low print speed and noisy work.

Although the advantages of a rare device are NOT only. For example, it can work in almost any conditions and with any paper size, and the “needle” prints are not only resistant to friction and moisture, but also significantly complicate document fraud.

Jet printer

The principle of operation of an inkjet printer is similar to the operation of a matrix: an image is created from dots. Only instead of heads with needles, they use a matrix (head) that prints with liquid dyes.

The print head can be built into the dye cartridge or fixed in the device itself (in this case, replaceable ink cartridges are used, and the head is NOT dismantled).

Printers with built-in matrix are manufactured by such companies as Epson and Canon. Hewlett-Packard, Lexmark take a printhead-in-cartridge approach.

“Inkjets” have their own classification in many ways. So, they differ in the type of ink used.

Ink can be:

  • Aquatic (used in most household and office devices)
  • Oil (used for industrial marking)
  • Pigmented (the best option for obtaining high quality images. photos, for example)
  • Solvent-based (used for printing outdoor advertisements, posters, stands, as they are resistant to water);
  • Thermal transfer (with their help, an image is applied to clothes).

There is also alcohol ink, but they have not become widespread, since they dry very quickly on the head.

There are several types of “Stringers” and by purpose. After all, if the application of the principles of operation of a dot matrix printer today is limited to the banking sector, then inkjet printers are used in many areas. So, according to their purpose, they can be:

  • Office (what are in most offices. for printing on small paper sizes)
  • Large format (used in the field of outdoor advertising);
  • Interior (for printing posters, stands and other interior design elements)
  • Marking (from the name it is clear. for marking various kinds of parts);
  • Photo printers (for photo printing)
  • Souvenir (used for printing on small items. disks, telephones, blanks of complex shapes);
  • Manicure (an innovation in beauty salons. a device for applying a complex pattern on nails).

Most offices use, you guessed it, an office printer. It is quite suitable for everyday needs. displaying text or images on paper. and is produced by many companies: Epson, HP, Canon, Lexmark, etc.

Office printers, like photo printers, have one head for each color and have very good color rendering (especially with continuous use). In addition, in comparison with the matrix, office “inkjet” work quite quietly.

But the print quality can be high only on condition of using paper with a special coating. on the usual office edges of the letters or drawing they can “shaggy”.

Print speeds outperformed dot matrix printers by just a few seconds. In this case, the prints are exposed to water, fade, smudge (however, much depends on the quality of the ink).

In addition, the device is quite capricious: uninterrupted operation is possible only if you regularly print with all cartridges (with prolonged stagnation, the ink on the head simply dries up).

But the main drawback is the high cost of maintenance. The ink in the cartridges runs out pretty quickly and needs to be changed periodically, which is expensive.

This problem was partly solved by CISS. continuous ink supply system.

Continuous ink supply system

CISS. It is a system that successfully replaces cartridges. The essence of its work is simple. the ink is supplied automatically through special tubes.

At the same time, the print quality is significantly improved, and money is saved in your wallet. You just need to periodically buy paint and pour it into special containers, which is much cheaper than changing cartridges. And there is enough ink for a long time.

Refueling of CISS can be carried out by the user himself. this does not require the help of a specialist.

If earlier it was possible to install such a system only on purpose (additionally), now there are already printers on sale with built-in CISS.

The first models appeared in the fall of 2011, and they were Epson L100 and Epson L800.

Laser printer

Laser technology (or, to be precise, electrographic technology) appeared back in 1938. This method of printing, first called electrography, then xerography, and today it is better known as laser printing, is characterized by speed, economy and high print quality.

The main part of the device is the so-called photodrum, which stores an electric charge on the surface, and it is “its own” at each point.

The laser beam, hitting the drum, “illuminates” individual points of the drum, removing the charge from them. By controlling the beam, you can “draw” charged and uncharged areas on the drum.

Particles of a special composition (toner) spill onto the drum and stick only to the charged points, thus forming an image. It is transferred to the paper, “fused” into it under the influence of high temperature and pressure.

This technology gives a very good result: the print speed is much higher than in inkjet printers (even in a personal laser printer. 10-20 pages per minute).

The print quality is also very high, in addition, the print is resistant to friction and moisture and holds the color well, which previous devices cannot boast of.

The advantage of a laser printer is its ability to print on almost any paper, and without losing the quality of the print.

But, of course, this device is NOT perfect either. Among the disadvantages is the high cost (although the issue is controversial: a laser printer is more expensive than an inkjet printer when buying, but much cheaper to maintain) and not always high-quality color reproduction.

As a disadvantage, edge distortions are also distinguished. a change in the shape of letters or a pattern along the edge of the sheet (for example, an oval point). However, this problem today is solved with the help of specially shaped lenses.

LED printing (LED)

An offshoot of laser technology is LED printing. Their difference is in the light source. Instead of a single laser beam. a whole line of LEDs. Each point in the line has its own LED, so the light source does NOT move, unlike laser technology.

This is the first advantage: less mechanics. higher level of reliability. The second advantage is high speed (from 40 pages per minute). In addition, the print quality is better than that of a laser printer, since there is no edge distortion.

However, there is one significant disadvantage in an LED printer. the high cost.

Other types of printers

There are many other technologies that have not taken root for some reason, or those that are used only in certain areas. So, dye-sublimation printers as an alternative to inkjet printers did not get widespread in office printing, but they are successfully used, for example, in the printing industry. They have a very high level of color rendering and picture quality.

Drum printers have already fallen out of use, although their speed has been and remains the highest among all existing printing devices.

It got its name thanks to the main element. a drum, equal to the width of the sheet, with a relief image of letters and numbers.

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The drum rotated, and at the moment the desired symbol passed over the letter, a special hammer was struck on the paper, printing a letter or number through the ink ribbon. The printouts of such a printer are recognizable: their font is similar to the font of typewriters, with “jumping” letters.

Petal (or Chamomile) printers are similar in principle to drum printers, only a set of letters was located on flexible disc petals, which rotated.

The desired petal pressed against the ribbon and paper, leaving an imprint. You could get a color print, put a tape of the second color.

According to the history of their development, printers were not only drum and chamomile, but also ball, caterpillar, chain. They differed in the principle of action, but, as you can see, none of them became widespread. Today smarter devices occupy their first places in the popularity rating: inkjet and laser.

How to choose a printer

Choosing the right printer is, in general, quite a difficult task. But solvable. You just need to decide for what purposes you need a printing device.

Office or home?

In general, the difference between a “home” and an office printer is in the volume of printing.

Usually a user, even if he prints “a lot”, gets 400-500 pages per month. In the office, this volume can be ten times more.

Therefore, “lasers” (like LEDs, by the way) are more often chosen for the office, and “inkjet”. on the desktop at home. If a large volume of printing is required at home, a CISS is installed.

The purchase as a whole can be relatively inexpensive. from thirty to one hundred dollars.

Print quality

In general, print quality is a rather ambiguous parameter. It is often defined on the basis of “like it. I don’t like it ”, and as you know, there is no dispute about tastes. However, there is also an objective characteristic. Resolution (dpi). It depends on him how clear the printout will turn out.

Standard resolutions (within office printing) are 600, 1200, 2400 ppi. The bigger, the better.

But after all, you shouldn’t chase this parameter. almost all modern models have high resolution.

Printing cost

When choosing a printer, you should focus not only on the cost of the device itself, but also on the cost of its maintenance in the future.

If you do not plan to print a lot. And at the same time want to save on paper and consumables, you can choose an inexpensive printer model with a small amount of possible load.

For those who plan to print a lot. A more reasonable option would be an expensive printer with a fairly large monthly load and expensive (but economical to operate) consumables.

In general, as practice shows, there is one regularity when choosing: the more expensive the printer, the lower the cost of printing. But this is true only when it comes to the basic configuration, without the “bells and whistles”.

The price can be “fancy” due to additional devices such as memory, duplexer, additional paper trays and other features, which, by the way, do not always turn out to be really necessary and useful.

Significantly increases the cost of the printer wireless connection.

Of course, the all-in-one printer will cost more (and at times). However, if you decide to buy a printer, scanner and copier in one, think carefully if you really need all three functions.

There is one more thing to say about prices. Fortunately for the buyer, the competition among manufacturers is quite high. And this means that they cannot afford to inflate unreasonably.

And yet, the difference between printing devices of the same class from different manufacturers can fluctuate within 10-15%. And these amounts are often more than an overpayment for a name.

How to configure print settings for documents in Windows

Double-sided or single-sided printing. Grayscale or color printing. Landscape or portrait orientation. These are just some of the options that will be offered for customizing printing. This article will help you learn about general Windows printing options and how to configure them.

Remember. The options available depends entirely on the printer model and application you are using.

Windows Printing Basics

To print from Windows, most applications need to open the file and click the Print button.

This will open a Dialog Box seal. Here you can define basic parameters such as which printer to use or how many copies to print. (The dialog box you see may differ from the one shown here, depending on the program and printer you are using.)

You can see which printers are available on your computer. You can also choose to “print” the document as a fax file or Microsoft XPS document.

This feature, useful in Office customization, discovers network printers.

Allows you to save the document as a.Prn file if you want to print it later. However, it is not always supported by modern USB printers.

Opens the Printing Preferences dialog box where you can select options such as paper size and layout.

Defines Windows pages to print. To print only selected text or graphics, select Selection. Select Current Page to print only the current page.

To print individual pages, select Pages and enter page numbers, separated by commas or hyphens. For example, if you enter 1, 4, 5-7, only pages 1 and 4 will be printed, and then pages 5 through 7.

Printing multiple copies of a document, file, or image.

In the Collate Copies dialog box, select the check box to print all pages before printing another copy of the document.

Difference between settings and properties

Each printer manufacturer and software publisher has its own way of performing functions. For double-sided or color printing, you need to click the “Settings”, “Properties” or “Advanced options”.

There are two common printer-related default settings. Print Setup and Print Properties.

Print settings

Print settings are changing the print settings on the printer.

To open the Print Properties Dialog Box

  • Open the “Devices and Printers” window.
  • Right click Relevant a printer and select Printing Preferences.
  • Make your choice and click OK.

Below are the most common settings that are found in this dialog box.

  • Orientation or page layout. Allows you to choose between long page (portrait) or wide page (landscape) printing.
  • Paper or letter size. The most common sizes are letter, standard, A4, or envelope size.
  • Paper source. Allows you to select which tray to use. Printers allow you to load different paper sizes in separate trays.
  • Double-sided (duplex) printing. Printing on one or both sides of the sheet.
  • Print color. Color or black and white (grayscale) printing.
  • Stitching. Common feature for workplace printers.

Printer properties

In a dialog box printer properties usually contains parameters that define the printer itself. updating drivers, setting ports, and hardware-related settings.

To open the Printer Properties Dialog Box

  • Open the “Devices and Printers” window.
  • Right click a printer and select Printer Properties.
  • Make your choice and click OK.

Setting print options

You can change the Media Type, Mode, Ink, Copies, and Pages settings in the Print dialog box. From this dialog you can also Access other dialogs where you can set the print speed, preview the document before printing, and save the print data to a file. See below Relevant section.

Setting basic parameters

Changing Copies

To set Copies, enter the number of copies you want to print in the text box of the same name.

Changing the Pages setting

To change the Pages setting, select the All or Range option. If you select the Range option. Then specify the bounds of the page range in the corresponding text boxes.

Changing the Media Type setting

The Media Type parameter determines which parameters will be available for modification, so it should be set first.

Allows you to set the type of media used. To find the type of media you are using, find it under Media Types.

Media types

Changing the Ink setting

When changing the Ink setting, select the Color option. To print in color, or Black. To print in black and white or grayscale.

Changing the Mode setting

The Mode option in the Print dialog box allows you to select Olin from three modes of operation in the printer software.

This mode provides the fastest and easiest way to start printing. See the section Using automatic mode for details.

This mode provides a variety of photo correction options to choose from. See Using PhotoEnhance for details.

In this mode, you can select from a list of parameter values, both predefined and custom, such that are best suited for the printed document. In Custom mode, the Advanced button is available to open the Advanced Dialog Box. For details, see Using Custom Mode.

In addition to choosing options in the Mode group of options to adjust print quality, you also have additional options found in the Page Setup and Layout dialog boxes. See Setting page setup or Setting page layout for details.

Using automatic mode

When Automatic is selected. The printer software selects all settings based on the current Media Type and Ink settings.

Using PhotoEnhance

This mode provides a variety of different photo correction options to choose from before printing. Photoenhance does not affect original print data.

You can select the following items from the dropdown list:

Provides normal correction for most still images. Start trying with this setup.

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Most suitable for printing photographs of people.

Best for landscapes such as mountains, sky and sea.

Soft Focus

Gives pictures the look of a camera with a soft focus lens.

Gives photographs a brownish tone.

In PhotoEnhance mode, the Digital Camera Correction option becomes available. Enable this option when printing photos taken with a digital camera, and they will come out as smooth and natural as when shooting on film.

Using Custom Mode

Selecting Custom in the Mode group of options activates the Custom Settings drop-down list, where you can select presets for printing text and graphics. Or, you can select the ColorSync color matching method. You can also create and save your own custom settings. For details on setting your own preferences, see Configuring Advanced Settings.

This parameter can accept the following values.

Color matching method

Most suitable for draft and text printing.

This method automatically adjusts the colors in the prints to match the colors on the monitor screen.

When using custom mode, settings are automatically made in the Print Quality drop-down list and the Color Management group of options. Changes to THESE settings are displayed on the monitor screen on the left side of the Print dialog box.

Follow these steps to select your custom installation.

Make sure the Media Type and Ink settings in the Print dialog box are correct.
Select the Custom option. This will activate the Custom Settings dropdown, located here is the Custom option.
From the Custom Settings drop-down list, select the most suitable item for the type of document or image you want to print.

Setting additional parameters

The settings in the Advanced dialog box give you complete control over print quality. Use these settings when experimenting or to fine tune a group of print settings to suit your print needs. Once you are satisfied with the new settings, you can name them and add them to the Custom Settings list in the Print menu.

To open the Advanced Dialog Box, select Custom and click the Advanced button.

Changing the Media Type setting

The Media Type parameter determines which parameters will be available for modification, so it should be set first.

Allows you to set the type of media loaded in the printer. To find the type of media you are using, find it under Media Types.

Media types

Changing the Ink setting

When changing the Ink setting, select the Color option. To print in color, or Black. To print in black and white or grayscale.

Print Quality

Select the desired print quality from the Print Quality list.

Microweave

Microweave improves print quality by smoothing jagged edges and sharpening image details. Produces higher quality prints but increases print time.

High Speed

In this mode, the printer prints in two directions. Left to right and right to left. High Speed ​​mode increases print speed but decreases print quality.

Flip Horizontal

Image Prints flipped. Text and graphics are flipped from right to left.

Finest Detail

Lets you print highly detailed text, graphics and lines.

Edge Smoothing

Improves the print quality of low-resolution images by smoothing jagged edges and lines. This mode does not work on high resolution images and text.

Color Management. Color Controls

Includes the color reproduction and image enhancement methods implemented in the printer driver. When the Color Controls option is enabled. In the Color Management section, additional options appear: Color Mode list and Color Enhancement sliders.

Gamma (Gamma)

Adjusts the contrast of an image by changing the midtones of colors and grayscale.

Photoenhance4

This mode provides a wide range of image correction tools before printing. Photoenhance does NOT modify the original data.

Tone:

This parameter can accept the following values.

EPSON Standard Tone Correction.

High contrast printing, crisp images.

Intensifies the colors and brightens the mid and high tones of the image. This mode is suitable for illustrations in a presentation (charts and graphs).

Prints photos in brown tones.

Printing images in black and white.

Effect:

This parameter can accept the following values.

Sharpens images, especially outlines.

Soft Focus

Gives pictures the look of a camera with a soft focus lens.

The image will look like it was painted on canvas.

The image will look like it was printed on parchment.

In PhotoEnhance4 mode, the Digital Camera Correction option becomes available. Enable this option when printing photos taken with a digital camera, and they will come out as smooth and natural as when shooting on film.

Colorsync

This method automatically adjusts printout colors to match the colors on your monitor.

Profile:

This method automatically adjusts the colors in prints to match the colors on the monitor screen, based on the information stored in a specific profile. EPSON Standard is the main profile for this printer.

Rendering Intent:

This parameter can accept the following values.

Usually used in photo reproduction.

Most suitable for reproducing rich images. Use this mode to print presentation graphics such as charts and graphs.

Most suitable for cases where it is important to match the colors of the print with the colors on the monitor screen. For example, when printing a company logo. This mode automatically adjusts printout colors to match the colors on your monitor.

No Color Adjustment

Printing takes place without applying color correction.

Saving and using your settings

To save your own settings in the Custom Setting list, click the Save Settings button in the Advanced dialog box. The Custom Settings Dialog Box will open.

Enter a unique name (up to 16 characters) for your settings using the keyboard in the Name text box and click the Save button. Your Advanced Settings will be added to the Custom Settings list. Up to 100 different custom settings can be stored.

To remove a setting from the Custom Settings list, select that setting in the Custom Settings dialog box and click the Delete button.

Using your saved settings

To use your saved settings, select the Custom option in the Mode group of options in the Print dialog box, then select one of your settings in the Custom Settings list.

If you select a different option from the Media Type drop-down list or another option in the Ink group of options when one of your custom settings is selected in the Custom Settings list, the Custom Settings Dialog Box ( Custom settings). The custom setting you selected before will not be affected by this configuration. To return to your Custom Installation, simply reselect it in the list.

Setting the print start time

You can choose the time. Into which the printer will start printing your document. To do this, follow these steps.

Click the Background Printing icon button in the Print dialog box. The Background Printing Dialog Box opens.
Select the On option if necessary for the Background Printing mode.
Select the Urgent option. Normal. Print at or Hold in the Print Time parameter group.
Click on the OK button. The Background Printing dialog box closes.
In the Print dialog box, check that the print settings match your choice, then click the Print button.

Preview prints

The Preview function allows you to see how the document will look when it is printed. Follow these steps to preview your document.

Make the desired printer driver settings.
Click the button with the Preview icon in the Print dialog. The button labeled Print will turn into a button labeled Preview.
Click on the Preview button. The Preview Dialog Box appears and a preview of the document.

Watermark edit

Click this button to select, move and resize the watermark.

Click this button to increase or decrease the screen size of the viewed page.

Show / Hide Printable Area

Click this button to display or not display a frame showing the printable area. The product cannot print the part of the image outside this frame.

Show / Hide Watermark Settings

Click this button to open the Watermark Edit Dialog Box, where you can add a watermark to your document and change its current settings.

Add page

Click this button to add the selected pages to or remove from the list of printable pages.

parameter, print, speed, type

Remove page

If you are satisfied with the preview of the image, then click on the Print button.

Print to file

You can save the print data to a file using the Save File command button in the Print dialog box. This function allows you to print the file later using Saved Print Data by simply double-clicking on the saved file name entry. To do this, follow these steps.

Precision and quality of printing on a 3D printer

We are often asked the question of what is the “quality” of printing in a Wanhao 3D printer. However, often asking this question does not always understand what it is and what quality is optimal. In this article we will try to explain everything in detail:

First of all, it is worth noting that almost the absolute majority of all modern railway printers use stepper motors of the same type. Are constructed on a similar principle. Also, their print heads and drive mechanisms are not very different from each other. The software, the so-called “brains” are also similar and are developed on the basis of the common Arduino platform. Have light versions of open source firmware. For several years, manufacturers of FDM 3D printers do not create software for their models, they choose software. Which are freely distributed. For example, Cura, Repetier Host, etc. However, they sometimes change the design of the control panel.

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A natural question may arise in buyers: how then most of the printers on the market have different characteristics and different print quality?
Usually, to such a question, we answer that none. You can achieve approximately the same print quality on almost any model. With minor differences. And it does NOT depend on the “accuracy” specified by the manufacturer, but on the material with which I print, the experience of the operator who controls the 3D printer and on the printing speed. Unlike cheap models, an expensive printer allows you to get the desired result several times faster. Paid more, you save yourself from various adjustments and printing tests, but you can achieve high quality printing on any printer. 3D printers can boast of a slightly higher print quality. Which are manufactured in a metal case and built on linear rail guides. With more accurate backlash-free rails and screws, the printing error will be reduced, so the plastic can be used at a higher speed.

However, marketers and manufacturers of THESE 3D printers cannot accept this state of affairs. It will be very difficult for them to sell more expensive models, so they have to invest in advertising, thereby increasing the cost of the product. The characteristics of THESE models are also too high and do not always correspond to reality.

Based on the data described above, it is already possible to draw some conclusions and figure out how exactly this or that FMD printer differs from its competitors, in addition to its cost. Let’s replace right away that only the “Main Differences” are able to somehow affect the specific quality of the resulting 3D printing.

The main differences between 3D printers:

  • Printer requirements for the quality of materials for use;
  • Rigid body, frame structure or the so-called “drygostol”, aka Prusa;
  • The presence of a closed-type printing chamber;
  • Teflon extruder core and clamping mechanism;
  • powerful, but not heavy, extruder motor;
  • Location of the coil with plastic;
  • The presence of a heated table and a blowing system.
  • Drive type (screw or belt)
  • Offline printing capability without PC;
  • Maximum printable area.
  • Additional device functions (wi-fi, camera, etc.);
  • The term of operation and the term of technical support;
  • Brand awareness and promotion.

Now, let’s understand the terms and the most important thing that interests us. “quality” and “accuracy”.

If we turn to Ozhegov’s dictionary and look at the definition of this word there, then we learn the following:

“Quality is this or that sign or property that determines the dignity of something.”

In our case, these signs of quality should determine the merits of the printer itself and the quality of its printing. Modern FMD 3D printers have the following properties, which distinguish them from others:

  • Z-axis step height;
  • Positioning accuracy;
  • Nozzle diameter (the size of the droplet we get from the nozzle).

These attributes can influence the “quality” of future print and determine its “accuracy”, which is often confused with “quality”. But if in the case of “quality” it is necessary to take into account the influence of airflow, the environment and the type of camera of the 3D printer, then they do not affect its “accuracy”.

Definition of the word “precision”: “The degree to which something is true”.

In our case, the printer must match the specified dimensions and coordinates.

Let’s look at each of the indicated signs in more detail:

1) Z step height or layer height is quite small. On modern models, a platform is installed that moves very short distances, of the order of 2.5 microns. In this case, the layer height will be slightly different when printed. Although in theory, you can achieve and 2.5 microns, but this will NOT work due to the physical limitations of materials, which will NOT allow you to create a layer of this size. The extruder squeezes out a viscous drop and it is impossible to make it so small.

As a result of many experiments, the optimal layer height for 3D printing on FMD printers was calculated, equal to 150-200 microns. In this case, the drop has sufficient volume to adhere to the previous layer and securely fix on it.

Today, there are many advertisements that claim that manufacturers have achieved very high print quality, which is only 50 or 20 microns in size. Especially such statements are replete with the well-known manufacturer Kickstarter. You can hear claims of revolutionary quality with a selection of beautiful photographs. However, it should be forgotten that the presence of such characteristics in a printer means that it will print better or more accurately than other models. Similar print settings can be set on almost any modern model. Numbers of 20, 50 or 100 microns do NOT mean printing and positioning accuracy at all. This is still only a characteristic of the height of the printed layer. And this height will not affect the actual formation of a point in the created object.

2) The parameter that is able to determine the accuracy of the movement of the 3D printer’s printheads, which are set by the program of coordinates, is called positioning accuracy.
over, for most models, the positioning accuracy is indicated in the range of 20-300 microns.

3) The size of the dot directly depends on the diameter of the nozzle orifice, which is present in the extruder. Engineers and developers of 3D printing technology, in the course of their experiments, concluded that the optimal nozzle diameter should be in the range of 400-500 microns. Although in advertisements and commercials you can often hear that a certain company has developed an innovative printer, which allows you to print several times better due to the nozzle diameter, which is reduced by 2 or more times. In fact, the quality will be slightly increased, but thin nozzles have a number of disadvantages:

  • The printed layers will be more fragile,
  • Printing will be interrupted and the nozzle is more prone to clogging.

Adequate manufacturers try to complete their products with normal nozzle sizes, which correspond to the required parameters (400-500 microns). If desired, the customer can always purchase a nozzle with a smaller diameter, and with its help a miniature drop will be obtained. Modern programs for 3D printers allow you to independently set the nozzle diameter.

By the way, using the term “dot” when describing FMD printing is not entirely correct. This type of printer uses plastic filament for printing, which they extrude in long layers and lay along the desired path. It is impossible to get the perfect point on such printers, and therefore the ideal edges of the object should not be obtained. The extruded thread is malleable and non-uniform. In the process of heating and cooling, it will change its shape and bend. Accordingly, on FMD printers, with any step height along the Z axis and positioning accuracy, it is impossible to obtain a quality exceeding 200 microns. In most cases, print quality of 0.3-0.7 millimeters (300-700 microns) is sufficient.

If you want more, it might be worth Checking Out Stereolithography. Stereolithography. This is a special technology for 3D printing, as a result of which photopolymers under the influence of light radiation from a mercury lamp or laser change their properties, turning from a liquid state into a solid.

This type of printing is of higher quality. Although printers have a number of shortcomings, the main ones are fragility and fragility, the life of a projector or LCD matrix, in quality they are certainly far ahead of FMD printers for 3D printing.

SLA and DLP 3D printers are representatives of stereolithography technology. Since the beginning of 2017, Wanhao has been supplying a budget model with the following technology to the Russian market: Wanhao Duplicator 7

In terms of their properties, these printers have the highest accuracy of the entire Wanhao line. This technology allows you to get a point with a size of about 40 microns and a layer height of 35 microns. The entire layer is illuminated at a time and solidification occurs within a certain period of time. Its degree is determined by the length of time required to project the image of one layer.

For this type of printers, a separate video card output, a separate computer or an autonomous control unit is required. You also have to regularly replace the LCD, which is actually a consumable with a lifespan of 1200-1500 hours and the price of which is about 15%.20% of the cost of the printer.

Summing up the results of this article, there are several main points that should be learned when buying:

  • Only thanks to photopolymer printing technologies you can get very high quality printing;
  • FDM printers cannot create detail above 100 microns, despite the statement in the technical documentation for a layer thickness of 20 microns.
  • When choosing FDM printers, it is worth stopping at models with a frame made of metal, they are able to demonstrate better print quality at a higher print speed, for example, the Wanhao Duplicator 6 or the Wanhao Duplicator 4S dual-extruder.
  • At low speed and high settings, the print quality of all FDM 3D printers is almost the same. It is possible on the youngest model of the Wanhao line. I3 mini Get a reasonably high print quality using quality materials and at slower speeds.