As early as four years ago, the HP research and development laboratory has begun to study the future of high-performance printing, aiming to provide customers with higher yield and higher performance printing: not only can increase the yield, but also through more A good way to use a combination of seemingly unrelated HP inks and electrophotography ("laser") technology. Using a variety of media and paper, to ensure simultaneous ultra-fast printing speed and excellent output quality, and provide the best, reliability and low operating costs.
HP inkjet and laser printing technologies have laid a solid foundation for building a new type of print engine. Our goal is to combine the advantages of inkjet printing technology and laser printing technology into a print engine to provide customers with better printing products. For more than four years, through intensive research in the main areas of HP engineering Design, materials science, imaging science, and ink and media chemistry resources, we have finally developed a set of inks that combines the best color quality and laser speed System, and enhanced reliability and reduced operating costs, this is HP "Ansett Printing" technology.
"Ansett Printing" technology is specially tailored for high-performance, high-load printing, providing excellent reliability, ultra-fast speed, consistent high-quality printing, and lower hardware costs and single-page costs.
The best combination of ink and laser
When using photo paper in a digital printing system, inkjet printing can provide brighter, fuller colors and a wider color gamut. However, it is still a big technical problem to make the ink provide accurate and high-quality output at other laser speeds.
The key to achieving full color and high optical density is to create a layer of colorant film on the paper and attach it to the surface of the paper. Toner is a kind of resin powder that can be transferred to paper, and melted (hot melted) to produce a bright and long-lasting image. Toner melting and solidification processes can be completed within one second. Liquid toner has a very short activity time, and if it solidifies before it penetrates the paper or flows on the page, it will reduce the clarity of characters and lines. All the toner transferred to the paper will adhere to the surface of the paper, thereby ensuring that the laser printer outputs fuller colors and accurate, clear black and white text and lines.
Unlike toner, the ink itself is liquid and can flow freely on the paper surface. Ink is composed of ink vehicle and colorant (dye, pigment or mixture of both). The ink vehicle is sprayed onto the paper together with the colorant, and then evaporates completely, leaving only the colorant to produce a dry print. The small force will cause the ink medium to spread on the surface of the paper, causing bleeding, or seeping into the paper, reducing the vividness of the color image.
The color gamut, the thin ink layer on the surface of the paper, and the rapid solidification of toner are essential elements for better image quality to ensure the clarity, optical density, and color saturation of the output. "Ansett? Printing" technology can be used in conjunction with HP Vivera premium inks customized for the following media: general office printing paper, and photo media for photo printing.
Under the control of the simple and precise paper path mechanism of laser printers (including HP LaserJet laser printers), when the paper moves at a consistent speed, the toner is transferred onto the paper. Because the action is continuous, printing can be completed faster. Laser printing is also called cross-page printing technology, because the print head 4 is fixed during printing, only the paper moves.
A fixed cross-page printhead is an essential element to ensure high performance: when the paper is moving, the printhead can immediately eject ink at high speed. "Ansett? Printing" technology uses a unique cross-page ink printhead.
In inkjet printers (including HP inkjet printers), there is a certain gap between the print head 5 and the page height or width. The scanning print head moves with the movement of the paper, and the paper must be kept at a certain distance from the print head, and then scan again to complete the printing.
As we all know, the HP OfficeJet Pro printer can print text at a color laser quality speed of up to 10 pages / minute7, and the HP Photosmart printer can quickly output 4X6 inch photo quality prints in 14 seconds. However, when printing with a scanning print head, it is necessary to precisely control the movement in two directions: the scanning direction of the print head and the paper feeding direction. The print head and paper perform actions intermittently: accelerating from a stationary state, performing a constant speed operation, and then decelerating and stopping. While the print head is printing, the paper does not move.
Accurate intermittent paper motion raises many engineering design challenges, and becomes more severe as the printer throughput increases. Paper has various physical properties, including coefficient of friction, hardness, and thickness. When feeding paper, these attributes may cause differences and errors. To solve this problem, some HP printers provide automatic or semi-automatic paper feed calibration to adjust the paper feeding parameters of special paper.
Even the smallest paper feed position error and printhead carriage scanning rate difference can cause significant banding in the printout. By increasing the number of round trips of the print head in the same area of ​​the page, the phenomenon of printer banding that uses a scan print head can be eliminated. Therefore, the print quality of inkjet printers in "Standard" and "Best" modes is better than "Draft" mode, but the print speed is lower.
"Ansett? Printing" technology can move the paper during printing, thereby reducing the print quality defects caused by intermittent paper and print head movements, and achieve high-speed printing.
The uniqueness of "Ansett? Printing" technology The three major elements of "Ansett? Printing" technology are the cross-page printhead, the movement of paper under the printhead, and the ink media system. It can be dedicated to meet the special requirements of the market, and can also optimize high performance and provide better print quality. "Ansett? Printing" technology also includes an intelligent automatic calibration writing system to ensure consistent image quality.
For laser printers, the photoconductor drum or transfer belt and fuser must be pressed directly on the paper to transfer the colorant (toner), and inkjet printing technology does not require contact with the paper. The print head is not in contact with the paper to eliminate wear and tear, and there is no need to periodically replace the laser writing system components. The "Ansett? Printing" technology non-contact printhead can continuously print 2 million pages of A-size paper with market-leading reliability.
Cross-page printhead
"Ansett? Printing" technology uses a cross-page printhead to provide extremely high printing performance. The paper can move continuously under the print head at a rate of up to 35 inches per second. The first-generation "Ansett? Print" technology printer can print 12 4 x 6 photos per minute (retail photo booth) or up to 71 pages of A-size paper (general office equipment). In the future, "Ansett? Printing" technology printers are expected to print 100 pages of A-size paper per minute.
The 4.25-inch "Ansett Printing" technology printhead uses 5 printhead silicon chips (ie, stampers), with 2112 nozzles interleaved on each chip. This arrangement is called the multi-die mode. Each print head has a total of 10560 nozzles, which can print two colors, namely 5280 nozzles of each color.
1200 nozzles / inch can provide high printing resolution, and can provide redundancy in high-volume monochrome or multi-color overprint printing mode.
The silicon die includes a logic power control function and an ink drop generator measurement circuit. These circuits use HP's highest density printhead circuit density technology, a 1 micron CMOS integrated circuit process.
The "Ansett Printing" technology printhead is very unique, constructed from a silicon die stamped on a multi-layer ceramic (MLC) structure (see Figure 2). MLC's thermal expansion is matched to silicon, allowing easy installation of stampers on very flat substrates. "Ansett? Printing" technology The ceramic material used in the print head provides excellent thermal stability and spatial accuracy.
The MLC has six planes, as shown in Figure 2. Each thin ceramic substrate has a tungsten guide drum and perforations. At high temperatures, when the ceramic substrate melts, a solid multilayer printed circuit board is formed-the circuit board can route signals and power to each stamper through interconnecting pads next to the print head. The ink flows through the MLC and enters the print head. This structural design that separates the ink from the guide drum ensures a longer printhead life.
Moving paper "Ansett Printing" technology printer can move the paper under the print head array. Figure 3 shows a 4-color (CMYK) printhead configuration for A-size paper (8.5 x 11 inches) media. Two 4.25 inch print heads span the paper, and each print head can print two colors. 9 The four print heads have a total of 42240 nozzles. The native print resolution across pages is up to 1200dpi. "Ansett Printing" technology can use a variety of paper motion systems: based on imaging drums, moving templates, and roll continuous printing. Some products can be used to print borderless photos. The "Ansett Printing" technology system provides accurate paper positioning and transport independent of paper properties.
"Ansett Printing" technology Drum-based printers have a variety of paper processing innovations that can provide up to 71 pages / minute of the first generation of continuous printing speeds. This unique system is another innovative example of "Ansett? Printing" technology, with a level of reliability comparable to other similar high-performance devices.
It uses a semi-fixed print head, each print head is equipped with 10560 nozzles. During the entire life cycle of the printer, there may be a few nozzles with unqualified print quality. "Ansett? Printing" technology printer can automatically replace the defective nozzle, and supports high-quality monochrome and two-color overprint printing mode. 10
Ink suitable for various printing environments
HP "Ansett Printing" technology can use a variety of optimized inks to meet the needs of specific market segments.
For example, in high-speed retail photo printing, "Ansett Printing" technology printers use HP photo paper and HP Vivera professional inks. The chemical combination of ink and media provides optimal ink drop distribution, ink penetration, gloss consistency, and a wide color gamut. For photos, fade resistance and water resistance are particularly important; designing ink and media as a system provides optimal performance.
At present, office printing mainly uses plain paper, so the requirements for ink performance are different. Business documents must be high-quality text and graphics of consistent quality, high optical density, clear lines and edges, and extremely high color saturation. Since the properties of plain paper are very unstable, the requirements for ink printing quality have been increased. 11
Office document printing is different from photo printing: the text needs to be decorated with bright colors, and at the same time, it should be practical, and the document can be annotated, edited and signed. This requires the ink formulation to be lightfast and water-resistant, and to dry quickly so that the document can be used after printing.
Ordinary paper is porous and easy to seep, and the surface fibers can cause the ink to feather. In order to obtain excellent printing quality of plain paper, it is necessary for ink to provide a predictable drop distribution on a variety of papers, 12 and ink must form a stable film on the surface of the paper to prevent colorants from penetrating the paper, resulting in color saturation and Reduced print optical density.
"Ansett Printing" technology adopts Vivera office ink specially designed for printing on plain paper to achieve new high performance and meet the printing needs of high-performance office documents. The colorant in this type of ink can quickly solidify on the surface of the paper to ensure consistent ink dot size, achieving extremely high color saturation and high optical density. The output printed at a speed of up to 71 pages / minute can be quickly dried, and has light resistance and water resistance, which can fully meet the needs of commercial documents.
Consistent image quality "Ansett? Printing" technology printers can output images with excellent quality through ink-based printing systems. In single-color or multi-color overprint printing mode, accurate ink droplet distribution can provide stable high-quality image printing, accurate and consistent color reproduction and long service life.
Optical ink drop detection and nozzle replacement printers using "Agilent? Print" technology must always output prints without missing ink drops or wrong orientation. In order to ensure stable output, each nozzle on the print head must be regularly tested for ink droplet ejection performance. If the nozzle is found to have performance problems, it will be replaced with a nozzle with excellent performance. Because the "Ansett? Print" technology printhead has nozzle redundancy and extremely low failure rates during service, nozzle replacement can be performed in monochrome or multi-color overprint printing mode. Moreover, regular automatic printhead maintenance can repair nozzles that do not meet specifications through the "spray" process.
The first generation of automatic nozzle testing is performed by an ink droplet detection device (ODD), which consists of a light-emitting diode (LED), a photodiode detector, electronic components, and an ink absorber. ODD can quickly and accurately test 21,120 nozzles on two rows of 4.25-inch wide printheads. The ODD nozzle test is very economical. Usually, 10560 nozzles are tested using only 2.2 microliters of ink. This means that less than one milliliter of ink can be used to perform more than 400 printhead tests.
In the image processing pipeline of the printer, an application specific integrated circuit (ASIC) 13 can be used to replace the nozzle. The ASIC can instruct the print head nozzle to print the specified point. Using the ODD test results, a list of out-of-spec nozzles can be created; ASIC can select an adjacent (left or right) nozzle from the table for each defective nozzle based on the image content. In this way, the effect of moving the actual printed dot 1/1200 inches from its standard position can be greatly reduced.
Automatic closed-loop color calibration
Calibrating the print head, ink, and media under operating conditions allows printers with HP "Agilent? Print" technology to provide accurate and consistent colors, smooth color transitions, and maximum dynamic range. This process is called HP closed-loop color calibration.
The printer can automatically print test samples, including various ink patches printed at different densities. The printer is equipped with an embedded densitometer, which can measure each color patch after printing is dry. The correlation between the input ink level and the output optical density can linearly reflect each output color channel (such as CMYK for 4-color printers), and determine the maximum print density and ink limit for each color on the calibration paper 14.
Automatic color correction
For "Agilent Printing" technology printers, it is very important to accurately calibrate the print head in the lateral direction of the page and the direction of paper movement to ensure accurate color reproduction and minimize image grain and banding. The "Ansett? Printing" technology printer uses an automatic calibration process to electronically calibrate 1 / 2400-inch nozzles to ensure better image performance.
The automatic color correction process uses HP's patented high-resolution color intervention samples to accurately determine the XY shift between nozzles of different colors. These samples are printed and scanned by the printer's embedded sensor and can be used to compensate for color shifts in the paper.
HP Scalable Printing Technology: Accurate and Durable
Hewlett-Packard (HP) Scalable Printing Technology (SPT) and "Ansett? Printing" technology are both HP's future inkjet printing research and development results that have spent more than four years and cost $ 1.4 billion. SPT has prompted HP to develop advanced writing systems, such as "Ansett? Printing" technology, whose printing speed, quality, reliability, and design flexibility far exceed previous ink technologies.
SPT can create large printheads with more nozzles and more nozzles per inch, while also ensuring that each nozzle achieves submicron component accuracy. Using precise definitions of ink channels, ink cartridges, and nozzles, SPT optimizes ink droplet ejection performance, improves ejection rate, and enhances the stability of ink volume, ink droplet velocity, and trajectory. Precise ink droplet ejection provides consistently high print quality, and allows "Ansett? Printing" technology printers to achieve faster printing speeds.
SPT print head adopts integral structure, which can provide the precision of photolithography. The ink droplet generator slot and the orifice plate are composed of the same polymer. Therefore, it not only provides matching thermal expansion (which is very important for large print heads), but also prevents chemical reactions with ink, thereby ensuring a longer life.
SPT defines a very fine barrier structure that can be used to filter particles. These barrier structures prevent particles and bubbles from entering the ink drop generator. Because the "Agilent? Print" technology printhead extends the life of the printer, 15 filtering the ink flowing into each ink droplet generator is important for reliable operation.
Summary "Ansett? Printing" technology is versatile and scalable, and can provide high-volume, high-performance print production to meet customer and market demand HP solutions. The print head designed by "Ansett Printing" technology is suitable for office and retail photo booths. It can print up to 2 million pages of A-size pages and is durable. It can be installed and used within the life of the printer. This outstanding innovative design of the writing system reliability significantly reduces service interventions to replace broken components, and enables "Ansett? Printing" technology printers to achieve lower cost of ownership and single page cost.
1.Non-toxic and odorless, conform to the international food safety standards.
2.Exquisite, durable and corrosion-resistant, do not easy to break and transfer heat.
3.Looks similar as porcelain.
4.Contact us for free sample service
Personalization Service:
1) The designs can be printed on the surface. It has Color stability and colorfastness.
2) You can customize all our products with the colors, the patterns and size of you like.
Packing:
Standard export packing, also can be packed according to buyers' requirement.
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