Get rid of after the designers drawing board really do not have to "face the back overturned Sketchpad," to paint, but not only can not work out the plan less, with the three-dimensional CAD software features support for their demands instead of drawing more than ever, higher.
Harsh effects of the precision of photo
On the printed document or photo, you will try to use a ruler to the amount of text and images in which the specific size? Certainly not, if anyone do that, people would think he was crazy. However, the output of CAD drawings is entirely possible this situation: engineers, and finished drawings to tell you how big a part should be.
This is the CAD output on the printer's exact requirements, in particular, mainly in order to line the output of two-dimensional engineering drawings for each line length, width, there are stringent requirements, the so-called "by one point too long, minus one points are too short ", the drawings must be in accordance with the precise ratio of print.
For a variety of two-dimensional and three-dimensional renderings, engineering drawings, like the precision required is so high, but also color printing demands than the average much higher. For example, in architectural design, whether in color or line on, requires a more delicate and strict: Building on the transition to a different line of natural clear lines of coincidence between the cross should be clear, the performance of color to be nuanced, and in-kind exactly the same. The so-called "Shi Zhu is too red, the powder is Bai", only just right can truly embody the essence of the design.
This is the birth of the 20th century 80 plotter pen is obviously not very well qualified, therefore, the development so far, pen plotters basically no way out. Hewlett-Packard in 1991, the first of its thermal inkjet printing technology into large-format printer, introduced the world's first large format color inkjet printer HP DesignJet, a large-format printing in the most important milestone. Large format inkjet printers in terms of precision printing, print speed, machine performance, or from the printing cost, for both better meet customer needs. It works the same as ordinary inkjet printers with high resolution and multi-level color output capabilities. So far, apart from HP, Epson, Canon, Minolta, Xerox and other companies are able to provide various types of large format inkjet printers. However, in the field of large format printing, HP's market share in China reached 84%, while in the field of CAD output is as high as 91%.
Speed driving
Speed the development of printing technology has been the main driving factor. As the pen plotter in the course of their work there pen and paper contact will inevitably limit the pen speed, which is leading to the disappearance of one of the decisive factors.
At all levels of inkjet printers, HP DesignJet 430 A1 size prints black line graph takes about 90 seconds, the fastest; HP DesignJet 500/500ps A1 size printing Colour line takes about 90 seconds; the HP DesignJet 1050C + / 1055CM + Print A1 size of the color line drawings were not to 1 minute. Of course, the higher the image quality requirements for the printing needs of the time will take longer. However, the progress of speed, we can clearly feel the technology.
Simply from the speed, the ink-jet printers and laser printers are far more than a pen plotter, inkjet printer and laser printer inferior to superior, but so far, A3 format printers over inkjet printers is mainly Lord, according to the author knows, can provide more than A3 format laser printers few, Fuji Xerox DW2050EP is one of the best, it can output 5 per minute A1-format newspaper proofs.
Why are so few large format laser printer? Some experts predict that, due to high cost of large format laser printer, narrow range of applications, professional too, so the market demand is relatively small. In most applications, in order to speed inkjet printer fully capable of a variety of print job, demonstrate the advantages of its cost performance. Contrast, can provide the wide-format A3 color laser printer manufacturers a lot, especially in higher print quality image, its speed is better than inkjet printers.
Within the short term this situation may also persists, makers have vital interests also need to continue to maintain inkjet technology, Dan Suizhao laser technology progress and cost reductions Qingxing would change too knowing, Bi Jing laser is by far the the fastest printing technology.
Large format print market segments
In the general office printing, A4, A3 format is sufficient, and only print engineering drawings are required to use 1, 0, drawings, or even long-format printing. So, the large format printers are divided by format, but with the improvement of technologies, large-format printing technologies become more mature, more and more high print accuracy, faster and faster, more and more rich colors, ink quality increasingly The more quality, more and more ordinary supplies, the operation more convenient, more and more low cost, the needs of different users are increasingly divided, making printing more and more market segments. Manufacturers in different fields need to the specialized needs of different users, different users that met the characteristics of large format printers.
Large format printer products from HP, we can see quite a range of its product line. In the field of professional CAD, HP provides for the production output of the HP Designet 1050/1055CM large format inkjet printers and the upcoming HP DesignJet 5500 series; in individual areas of CAD output, Hewlett-Packard recently introduced the HP DesignJet 100. From the use of sub-scale, there are individuals and small working groups for the HP DesignJet 430 and HP DesignJet 500/500ps. If the medium of the Working Group, HP DesignJet 1000 series and 800 series is more appropriate. If it is a large working group, operating in large quantities, then HP DesignJet 5000 series is a good choice. Different emphasis depending on the application, designed specifically for HP also provides a wide format proofing the HP DesignJet 10ps/20ps/50ps "photo hand" series, if the image in the field of production proofing, you can use the HP DesignJet 5000 series, these two machines are suitable for process proofing.
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