Inkjet technology revealed-two
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Excimer laser cutting print head technology
The excimer laser cutting print head technology combines the ink jet holes with the ink-to-nozzle pressurization chamber to achieve a precision process with a nozzle diameter of only 1 μm. The precise nozzle can effectively reduce the ink droplets ejected, the ink is emitted more smoothly, the ink dots are smaller and not easy to spread, which makes the printing effect clearer and more delicate. The highest printing precision of color and black and white reaches 1200dpi×1200dpi.
Pursuit of quality is endless
In the field of color output, the reason why the inkjet whirlwind is more and more splendid, is probably because of its excellent color expression, image clarity, tone level and fineness of the picture, and the user's high-quality color output, even The requirements for photo-level output are similar. The focus of research and development of various inkjet printing technologies is print quality.
Resolution enhancement technology
Resolution Enhancement Technology (Ret) is used to increase resolution without slowing down the speed of inkjet printers. Ret technology uses sophisticated mathematical calculations to allow the printer to automatically fill smaller points between the edges, points, and points of the curve, and to create smoother edges with multiple tight fixes. For example, in order to reduce the huge database that the computer must process and transfer to the printer, Ret transmits 300dpi instead of a full 600dpi dot matrix image to the printer. Then Ret simply performs a value of 300 to 600 dpi. Ret is applied to each adjacent area of 600dpi color point to add or remove adjacent color points to achieve 600dpi reproduction with smooth and sharp edges. Ret minimizes the computation and traffic that must be performed by the host, while providing the true quality of text and black graphics. This results in a higher yield of dot pattern files and less printer memory.
Color gradation enhancement
The so-called gradation number is the number of colors that can be printed directly at each point (pixel). Conventional technology makes ink droplets only spray and not spray (ie, there are ink droplets and no ink droplets). The inkjet printer using the traditional three-color ink cartridge can produce only 8 kinds of color scales, and other colors must pass CMYK. Mixed in different proportions.
C-Ret color enhancement technology allows the printer to produce smaller droplets, and the printer can spray multiple drops of ink on the same pixel area, producing vivid colors and sharp, sharp black text without sacrificing too much Printing speed. Using C-Ret technology, about 30 different colors can be produced in each pixel, and the original color ink droplets are used to spray 4 different layers in each pixel, without inkjet water (colorless); Drop (light); spray 2 drops (darker); spray 3 drops (saturated primary). Through the combination of color ink and black ink, the difference in color depth can be produced, and the gray scale gradient is also clear and uniform, so that the ink dot enters the era of color gradation.
Fulfill technology
Photo Reinforcement Technology (PhotoRet, the "Fully" technology) is mainly used in HP's printing products. The Fulfill technology uses a unique ink drop alignment method that works with a special ink to eject more drops at each point, resulting in a much higher number of levels of color. Taking the fourth generation of Fulfill technology as an example, six-color ink printing is used, and on the basis of three colors, a special photographic ink with less coloring agent or dye is added, so that the ink can produce a lighter shade. Such special photographic inks include light, light cyan and black inks. The ink system uses both standard and dedicated camera cartridges to allow the printer to print vivid colors that are highly saturated and lighter in color. This technology can be layered at exactly every point, stacking up to 32 drops of ink, jetting droplets are smaller, only 4 to 5 pl, 6 color combinations can directly generate more than 1.2 million effective colors, can provide color Continuous, grainless photo-level imagery. Under the premise of not sacrificing the CPU operation speed, more number of ink dots are obtained at the same time, a satisfactory printing effect is obtained on plain paper, and ink is very saved.
Intelligent color enhancement technology
Intelligent color enhancement technology includes intelligent focus, automatic contrast enhancement (ACE), sRGB support, etc. Through a series of intelligent processing, users can print the best results on various print media without any difficulty adjusting the print parameters. : Intelligent Focus technology enables printing to automatically “synthesize” or generate higher resolution images when using low resolution images, without the need to manually increase image resolution or slow down the print speed to make the image sharper and edge More specifically; the Automatic Contrast Enhancement (ACE) algorithm enables brighter, more detailed images in images that are poorly lit; sRGB (standard red, green, and blue) colors are used to secure images from web pages, applications, and displays. And the consistency of the color of the image input and output of the peripheral.
Second generation intelligent color technology
The second generation of Intelligent Color Technology (Color Smart II) consists of three parts: Smart Focus, support for sRGB color industry standard technology and enhanced MMX multimedia processing technology. Once you have selected Color Smart II technology, you can press the print button directly. Color Smart II sets the parameters corresponding to the printing according to the best optimization method, and automatically adjusts the color for the user. This is especially convenient when printing comprehensive documents with images, text, and graphics.
Image optimization technology
In general, when a small-sized, low-resolution image is magnified, all the pixels in the image are scaled up, and the gaps and spaces between the dots are naturally enlarged. The subtle defects in the original image are magnified to the extent that affects the vision. Image optimization technology can automatically optimize the image according to the color and transition of surrounding pixels when printing low-resolution images, sharpen the rough edges, and then use the printer to provide the maximum resolution of the printer. Output on.
Plain paper optimization technology
Plain paper optimized printing technology P-POP (Plain Paper Optimizer) can effectively avoid the phenomenon of ordinary paper ink diffusion. Ink cartridges using plain paper optimization technology contain a unique liquid called "ink optimizer." The ink optimising liquid is first sprayed onto the paper during printing, and then the ink ejected from the printer nozzle reacts with the ink optimising liquid to cause the pigment in the ink to condense. The ink optimising solution penetrates into the paper to prevent the ink from spreading through the paper. In this way, the printed text and the edges of the graphic are very clear, and since the ink is fixed on the surface of the paper instead of being infiltrated into the paper, the printed matter does not disappear as it was before.
Multiple color control technology
Previous inkjet printers sprayed standard cyan, magenta, yellow, and black inks 100% onto paper, meaning that each print point is full-color, so the printed image lacks smooth tones. Transition. Now that the ink drops are getting smaller and smaller, multiple dots can be ejected per pixel, which makes multiple color control possible. Multiple color control technology can make the image color richer and more vivid, the color performance is more accurate, and the image layering is stronger.
Quadruple color control technology focuses on color and print level control. Based on the four-color ink, three more Photo inks are created to achieve seven-color printing. It can dilute the ink of different colors by 2/3 (according to the actual needs, the black is diluted by half, the yellow color of the human eye is not easy to distinguish the color density is not diluted), so that each pixel can be colorless when printed, 1/ Changes in 3 colors, 2/3 colors, and full colors, subtly representing the tone transition of the picture. So that the six-color inkjet printer has 33 color combinations and control capabilities, and each color has 256 nozzles, hardware resolution up to 1200dpi × 1200dpi, so that you can more clearly show the degree of subtle changes in color and The color saturation in the middle of the perfect image, the transition of the hue is more delicate and natural. There are also 25 heavy-tone printing technologies that use 7-color inks to print up to 25 levels of color to more clearly represent subtle changes in color, perfectly reproducing the midtones of the image.
Fine image halftone adjustment technique
Acuphoto Halftoning is a vivid and realistic way to convert a spot made up of three primary colors (RGB) on the screen into a CMYK four-color output for precise color image printing. Using the principle of photo-screen printing, the RGB spot is quickly memorized into the driver, and then the error-diffusion halftone is controlled according to a suitable algorithm to produce a smooth tone change and fine texture and texture to improve the true image of the printer. The ability to output sexually.
True color reproduction
Natural Color Technology is a perfect way to display the brightness and vivid colors that a typical digital camera, scanner, and screen can't.
Web Smoothing Technology
Due to the low resolution of the images on the webpage, jagged plaques often appear on the color borders of the printed images. Lexmark's Web Smoothing image enhancement technology solves the problem of webpage printing. It uses a very clever algorithm to stretch the image. Instead of simply copying the original color of each patch, this algorithm uses several of the most primitive pixels to estimate the color of each stretched pixel patch, that is, an original pixel that stretches outward. At the time, the effect it produces is not necessarily determined by itself, and is largely influenced by the original pixels around it (especially near the boundaries of the color). Under the combined influence of these original pixel colors, the color of the newly generated pixel is determined. This technology enhances the smoothness of the image boundaries and makes the printed web page images very clear.
Racing inkjet
In people's traditional concept, quality and speed are a pair of contradictions. "Fish" and "bear paw" cannot be combined. High-quality output is often at the expense of speed. In a high-tempo, high-level modern society, inkjet printers must have both high quality and high speed to meet demand. Therefore, new inkjet technology can improve output while improving output speed.
True color reproduction
Double cartridge technology
The dual cartridge design delivers higher quality images and greatly speeds up printing and increases printer flexibility. Dual cartridge designs are typically designed for several types of tasks, such as color text printing, highest quality photo-quality printing, high-quality fast color printing, fast black printing, and more. The dual cartridge design can also be used with black or color ink cartridges alone, or it can be used together or even reused. Therefore, compared with the conventional single-ink (single-head) device, this technology eliminates the trouble of repeatedly replacing the color and black ink cartridges and improves the printing speed. When text printing is performed, only black ink cartridges can be controlled by software to achieve better economic output.
CCS technology
Generally, the printing process of wide-spraying is divided into two parts, namely, the process of sucking ink from the ink cartridge and the printing process of ink in the print head. The two processes are not synchronized, but the ink is first printed, then sucked. The ink is printed again, resulting in a discontinuous process between ink absorption and printing, which affects both the print output speed and the intermittent print marks in the color output. CCS technology (Continuous Charging System) overcomes this shortcoming, ink can be continuously sent from the ink cartridge to the print head, and the print head can continuously print the task in one go, so that even in the printing process, it can be uninterrupted. Absorb ink. Because CCS technology allows both ink absorbing and printing processes to occur simultaneously, it not only provides faster print speeds, but also provides smoother image edges.
JetExpress printing technology
JetExpress technology is a new technology that uses a wider printhead, adds more nozzles, and increases wide-spray speed and print quality. Wide-spray with JetExpress technology typically has four printheads, each with 524 nozzles, and the print nozzle has a spray stroke coverage of about 0.85 inches. In addition, the modular ink system consisting of JetExpress technology consists of multiple printheads and separate off-axis cartridges that allow the printer to eject millions of drops per second, greatly increasing print speed.
CrystalJet printing technology
CrystalJet printing technology is also a new technology designed to solve many problems related to inkjet technology, such as print quality, printing speed, print resolution and user cost. It is also one of the ultra-micro piezoelectric inkjet technologies, but superior to other piezoelectric technologies, is a multi-tech hybrid form that combines the features of continuous inkjet printing and drop-on-demand inkjet printing. Because there is no cross-channel electrical interference and ink precipitation, the emission rate of the print head is greatly improved, and the ink droplets with perfect shape can be emitted without causing fogging on the medium. The user can select the size of the ink droplets. And quantity, which means that you can freely implement functions such as variable-resolution printing and gradient-tone image printing, and also enable CrystalJet print heads to achieve higher drop rates, accurate drop volume control, and a wider range of inks. Viscosity selection.
Two-way printing
Two-way printing can significantly increase the printing speed, but if the ink head is not positioned accurately, it will affect the print quality. With the advancement of ink head positioning technology, some new products have achieved two-way printing in photo printing and high quality printing modes. The two-way printing function actually adds a synchronization controller to the left and right sides of the printing guide rail, thereby ensuring the accuracy of image connection during printing, which not only improves the printing speed but also improves the image quality.
As inkjet printers increasingly enter the modern social life, the major manufacturers are each battalion, constantly sending out "smart soldiers" with stunts to compete for a more refined market. For the competition between them, the biggest beneficiaries are office printing, digital proofing, photography, large-format printing, and even short-run printing and other industry users and home users.
Through the techniques described above, it is not difficult to see that the innovation of inkjet technology, the focus of improvement is nothing more than the fineness of the ink droplets, the level of color that can be expressed, the number of colors, the sharpness of the image, and the printing speed. Therefore, the industry concerned predicts that the development of inkjet printers will move toward true color, multi-function, and high speed.