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High speed inkjet printing equipment powerful digital front end

release date: Source: Internet editor: lychee Views: 2687 copyright and disclaimer

core tip: whenever digital printing equipment suppliers launch production inkjet digital printing equipment with higher productivity or a wider color gamut, new digital front end (DFE) design will always appear, They support the normal operation of digital printing equipment with powerful functions

[China Packaging News] whenever digital printing equipment suppliers launch production inkjet digital printing equipment with higher productivity or a wider color gamut, new digital front end (DFE) designs will always appear, which support the normal operation of digital printing equipment with powerful functions

data processing

in terms of data processing speed and output capacity, the existence of these problems in image design or embedding special graphics in China has made China's plastic machinery industry unable to meet the needs of foreign plastic machinery level as soon as possible, which is also a major manufacturing country in the global automotive industry (such as our common raster graphics), making inkjet printing put forward higher technical requirements for the digital front end, Martin Bailey, chief technology officer of global graphics, said, "previously, the printing speed and data processing capacity of inkjet and printing technology have made a slight breakthrough. Although it has not yet met our expectations, in my opinion, the data processing speed of inkjet printing technology will reach an amazing growth rate in the next 10 years."

just like the HP T400 color ink-jet rotary printer driven by lequin rip, which is driven by har to ensure the normal operation of the experiment itself, when printing raster graphics, the device requires 15GB of raster data per second to ensure the normal operation of the device engine. In the actual printing process, the use of raster graphics will virtually increase the amount of data processing required for each page

Nick Fiore, senior manager of Ricoh product marketing, said, "there may be two factors that affect the resolution and speed of the digital front-end drive high-speed inkjet printing equipment, that is, the front-end drive must have strong enough data processing capacity and fast enough operation network to ensure the printing resolution and speed of the equipment."

"at present, the biggest challenge for the front-end processing system of high-speed inkjet printing lies in speed and printing quality", todvinsky, global sales manager of Xerox workflow and solutions, agrees with this view. Back in the past 10 years, high-speed inkjet printing mainly used the classic bill printing workflow, downloading variable data and completing printing operations on pre printed paper. It should be emphasized that the variable data referred to here is only limited to words


"at present, the image quality of high-speed inkjet printing has exceeded the image quality level in the traditional bill printing workflow," viniski explained. "With the increase of requirements for color gamut, variable data and personalized operation settings, the image quality expectation of terminal users for high-speed inkjet printing technology has also increased, which also puts forward higher requirements for the digital front end."

in order to provide almost perfect prints, the primary task of the digital front end is to correctly and quickly convert the original data stream into bitmap images that can be received by the printing equipment, Fiore continued, "To achieve this standard, the digital front-end must consider that the printing equipment may choose to make some changes to the original document in order to ensure the final print quality, such as color parameters, page order, printing direction, etc." At this time, the important functions proposed for digital prepress include providing support for data flow, such as at least supporting PDF and pdf/vt (variable data format) and other formats, as well as having industry standard color management capabilities, powerful typography functions, and supporting the use of JDF workflow, Fiore added

Ricoh Pro vc60000 digital printing equipment adopts a new Ricoh digital front end, which can support PDF, pdf/vt format and JDF workflow, and has an advanced color management system. The front-end data processor of the device can be optimized according to the complex and image-based direct mail, which helps to further improve the production efficiency

previous inkjet printing equipment was mostly driven by IPDS data stream. "However, IPDS does not have the complexity required by the direct mail market, or even the current popular bill printing live parts with a large number of images," viniski explained. "The workflow in PDF file format can obtain visually richer documents, that is, the image performance ability is very strong." For this reason, the printing industry is developing towards PDF format as the industry standard

for those high demand graphics and front-end functions that need to be based on IPDS workflow, Xerox's freeflow print server can be used to solve this demand. Freeflow print server can support the work based on Adobe PDF Print Engine to provide advanced, fair and economical overall solution workflow, which is an end-to-end PDF workflow built in the fuselage. In addition, the freeflow print server also has variable data printing functions, including data-driven subsets defined by operators. It can carry out post press processing and production processes independent of the data flow structure. At the same time, its extensible Rip is also an important function

viniski said, "scalable Rip can enable printing enterprises to achieve the required data complexity and high printing speed. At the same time, selecting the appropriate controller according to the size of the enterprise can help enterprises solve very complex printing operations." When selecting the matching rip, data transmission speed, transmission cost and quality, as well as the return on investment of equipment have become the focus of global graphics companies. Bailey said, "the latest version of harlequin Rip is obviously much faster than the earlier version." Rip must be able to work really fast, otherwise the running speed of the printing machine will be limited and the corresponding return on investment will not be obtained. Bailey said that at present, high-speed inkjet printing equipment should have faster speed, more complex color processing ability and personalized production settings. Such equipment is also much more expensive than in the past. It will cost more than $1million

the harlequin rip system developed by the global graphics company provides OEM services for HP and other printing equipment suppliers. The parallel page processing function of the system provides the printing system with multi-threaded processing function (which refers to the technology of realizing multiple threads and executing from software or hardware), that is, when performing rip tasks, each page of the job can be output at the same time. From a technical point of view, multithreading is not a new feature for Harlequin rip. It is very common in the parallel page function. At the same time, the harlequin host renderer 3 module incorporated in the parallel page model can realize the functions of rip, patchwork and rendering separately. For example, when a thread is working on the second page of a rip job, it can let another thread complete the composition, rendering and printing of the first page of the job. In addition, harlequin rip has a flexible structure, which can run hundreds of rip jobs simultaneously according to different digital front-end structures. One of the highlights of harlequin varidata is that it can accelerate the printing of variable data in PDF format, and effectively use circular data by reducing the complexity of variable data. Among them, varidata can identify groups of image elements that appear many times, and then each group is rendered only once, saving time. Pdf rasterization device has automatic analysis function, which can identify pages using shared elements. Like harlequin varidata, these shared elements are only rendered once

on the one hand, Bailey added, "quality is also a very important link. So far, there are still many disputes about whether digital printing can reach offset quality." For Rip, these requirements mean that rip should have stronger interpretation ability and color processing ability. For Harlequin rip system, colorpro option can be used to perform color management on rip, and it also provides accurate color reproduction and custom rendering options

as the output quality of high-speed inkjet printing technology continues to improve, and the speed and printing format continue to increase, the digital front-end function will gradually highlight its importance in the whole printing system

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