Color knowledge of inkjet printers
People generally like to use the printing effect of the ink included with the machine to measure the performance function of compatible ink. In fact, the ink of each brand has its own characteristics. Taking the three most popular inkjet printers at present as an example, although they use three primary colors: C (indigo), M (magenta), and Y (yellow), their printing effects are also different. For example, one brand of M (magenta) is slightly purple-red, while another brand of M (magenta) has a little rose red. Even if printers of the same brand have different models or ink batches, the printing effect is different. Professional dye or ink manufacturers cannot control this difference within a range that the human eye cannot detect. This is because:
1. Different saturation: All inks cannot reach the theoretical saturation of 100%, because when expressing rich colors or printing lighter colors, if each ink dot is 100% C, M, and Y, it is required to use very sparse ink dots to simulate light colors. This printing effect will make the particles look very coarse, so the saturation of C, M, and Y may be only 80% or 85%. In order to make the printing layers clearer and the tones more delicate and softer, the new HP, CANON, and EPSON six-color printers all use light red, light blue or light yellow with lower saturation. It can be seen that the saturation is not an absolute value, mainly depending on what printing effect the ink manufacturer hopes to achieve by controlling the saturation.
2. Print color: In fact, it is the reaction of the wavelength of the object reflected in our eyes. When the wavelength is between 600 and 570nm (nanometers), we will regard it as yellow, between 760 and 630nm, and when the wavelength is between 450 and 430nm, we will regard it as blue. The subtle differences depend on the saturation of the three primary colors formulated by each manufacturer, and are also subject to the sensory cells of the human eye.
3. The inks of various brands have their own unique colors. Because they use different supplier dyes, whether you prefer redder or yellower depends on your aesthetic habits and the perspective of your appreciation of the pictures.
If you find that the printed color is not ideal or the color cast is severe, there may be some reasons:
A. Ordinary printing paper is used, and the background color of the paper is darker; the paper is too poor, and the ink seeps into the fibers of the paper or melts, changing the depth of the pattern color. It is recommended that you use inkjet special paper, which is coated with titanium dioxide as the base material, which can make the ink distribution more evenly
B. Printing settings: that is, it has a lot to do with the saturation ratio selected by the operator when adjusting the colors. In addition, the selection of dpi and printing speed will also affect the printing effect. Secondly, it is closely related to the printing software used, such as using Photoshop and CORELDRAM to print the same pattern, the effects are very different and each has its own characteristics.
C. Ink cartridge failure: If the ink cavity of the color ink cartridge is colored, or air appears in a certain ink area, this ink will not be produced and the pattern will tend toward a certain tone.
D. Printhead condition: If the printing settings are correct, if the same paper prints the same screen, the color difference between them is caused by the unstable ink jet volume of the printhead, because the printhead has been cleaned multiple times, causing damage to cause too much or too little ink to spray.
Internal structure of the printer
1. In/output system
(1) The printer's automatic paper feeding system is mainly composed of a paper feeder, a paper feeding stepper motor, a paper picking stick and other components (not visible in the picture). The paper feeder cooperates with the paper feed stepper motor and can rotate the paper feed stick to make the printer feed paper in the vertical direction. After long-term use of inkjet printers, most of the accumulated paper confetti and dust in the paper feeding system will affect the smoothness of the paper feeding, and may even cause paper jams. Therefore, the paper feeding system must be cleaned regularly.
Printer internal structure 1
(2) There is also a paper guide with adjustable paper width in the upper left of the printer's paper feeder. Paper guides ensure that the loaded paper is upright and adjust the guide rails to fit the width of the paper.
(3) Next, I see the paper press roller of this printer. If you are using paper with more paper powder to print, a lot of paper confetti or paper powder may be attached to this part over time, which may easily cause paper jams. The paper is driven forward through the paper feed stepper motor, and then the paper passes smoothly through the paper discharge stick and conveying gear of the paper output system.
(4) Finally, the paper comes out of the paper outlet.
2. Drive motor system
Printer internal structure 2
(1) The left position behind the printer is the car stepper motor, which is connected to the circuit system through a flat feeder, and then the car stepper motor is controlled to move through the car stepper motor chip of the circuit system.
(2) The printhead bracket close to the stepper motor of the car (some printers are called "walking cars"). It drives the belt to drive the printhead bracket to slide on a round steel shaft through a car stepper motor, thereby driving the ink cartridge to print. This belt should not be too loose or too tight. It may not allow the ink cartridge to be accurately positioned, and it may not be able to drive the ink cartridge to print.
Teach you how to save ink with color inkjet printers
With the reduction of inkjet printer prices and the continuous improvement of printing quality, many families have equipped color inkjet printers, but the consumption of expensive consumables, especially ink, is a practical problem that we have to face. Only by using it reasonably and correctly can we save ink, reduce printing costs, and truly afford to buy and use.
Let’s take an EPSON Stylus C43 Series as an example to introduce some tips for color spray printers to save ink.
1. Select the print quality as needed
The ink consumption of an inkjet printer is proportional to its print quality and resolution. We should choose the corresponding print resolution and print quality according to different application requirements.
When printing files with low color requirements, you can use the quality type of "text" mode to save ink by reducing the printing quality.
When printing files with rich colors, setting the printing properties reasonably can not only save ink but also greatly improve printing speed.
For example, when we print a file that does not require color, we can follow the following steps to set it: Click the "Preferences" button in the printing screen, the printer properties setting screen appears, select "Print Preferences", the main window of printer preferences appears, and select "Text" in the quality type. Then click "Advanced", and a "Note" dialog box will appear. Click "Continue" to open the corresponding dialog box, and select "Black Ink Only" in "Print Options". This way, color ink can be saved when printing and avoid unnecessary waste.
(3) Above the printhead bracket is a paper thickness adjustment rod (different printers may have different design parts). When you use thicker printing paper, you can adjust it.
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