畅谈彩色激光打印机原理与应用Talkingabouttheprincipleandapplicationofcolorlaserprinter

1、畅谈彩色激光打印机原理与应用（ Talking about the principle andapplication of color laser printer)Talk about the principle and application of color laser printer,.Txt know how to let go of people find easy, know how to forget people, find freedom, know howto care for people find happiness! The wisdom of a womanis t

2、o admire the intelligence of a man. Life is a lamp, work is an oil, and if it needs light, go for it! Love, fly to the horizon, feel steadfast, because of your concern; after breaking up, sitting at home feel weightless, because there is no direction. Talking about the principle and application of c

3、olor laser printerAuthor: Hunan fishingSource: China Computer NewsDo not know idioms colorful, colorful, colorful, whether the five colors specifically refer to, for color laser printers, the five colors are green, yellow, black, white. Cyan, yellow and black are the color of toner, and white is the

4、 base of paper. Blue, yellow and yellow are the three colors in the "subtraction" principle of color synthesis. The two colors, black and white, can form the color of the whole world.The world was originally colorful, but at the very beginning of the invention of a method of image reproduc

5、tion, for technical reasons, it could only be reflected in black and white, such as photography, film, television and laser printing. When the technology develops to a certain stage, it will inevitably enter the colorful world completely, such as photography, film and television. So if someone asks,

6、 "do we really need to use color laser printing?"" Well, I can't help asking, "does that need a reason?"".Cost of color laser printingI believe that color laser printing in the vast majority of users using black and white laser printing in mind has been a dream, the

7、 reason is only in the "dream" think of it, I'm afraid it is the first because of its price.Whenit comes to the cost of color laser printing, here quoted foreign test institutions on ten kinds of color laser printer cost test results, most can explain the problem.The test conditions ar

8、e 80000 page color printing with 20% coverage, and then calculate the total cost of consumption. The cost includes toner, fuser, toner cartridge, consumption of developing unit and cost of replacement.The varieties of color printers tested are as follows:QMSMagicolor DL/DL+QMSMagicolor II CX/EXQMSMa

9、gicolor 330CX/EXHPLJ 4500HPLJ 8500LexmarkSC1275Tek 740N/PTek780N/PEpson C8000Tek840NThe minimum cost of supplies is $5125, the maximum cost is $11136, the average cost is $7632, and the average cost of the five lowest consumption models is $5757.The most interesting result is a price difference of t

10、oner not directly reflected in the overall cost of printing, the vast print cost of most color laser printers are very close, the printing cost of individual models wasmuchhigher, because the vulnerable parts of the life is short, so although the toner price is low, but the overall cost of it much h

11、igher. It also reminds us when we buy fancy laser printers,Must pay attention to its use whenthe cost of consumption, not on the "buy cheap, with expensive" when.A arithmetic will be above the dollars into RMB,we can conclude that, in addition to one input printer, 20% coverage of allprint

12、 cost per page can not exceed 6, 7 cents, less than the sameeffect of inkjet printing price 1/3, more than 10000 prints can be input and the inkjet printer flat, and after the operation cost of color laser printing advantage is obvious, of course, the high speed laser print on plain paper and can ac

13、hieve the effect of ink-jet printing is incomparable.According to the load capacity of the network color laser printer, ten thousand or twenty thousand prints can be completed in one month. From this amount of use can also be seen, color laser printer for the Department network printing, and in fact

14、, color laser printers are mostly network type.Someone at home (presumably distributor) statistics, color laser printer to print a A4 format color photos as long as 1 yuan, according to the above foreign testing result calculated, about a 80%print coverage of A4 images, all the materials cost about

15、two dollars. As a consumer, I prefer the future person to budget, because it is the data that prints 80 thousand pages and calculates all the cost. One such conservative data also strongly supports the idea that color laser printing is by no means an affordable high-end mode of output,The widely use

16、d barrier is the high cost of buying a printer at a time, so the group is most comfortable with it, and the average family can afford it, though it can afford it.Principle of color laser printingUnderstanding the principle of color laser printer is a more interesting thing, which includes a classic

17、example of permutation and combination. If you're interested, you cancount it and see if you can figure it out.The principle of color laser printer is absolutely related tothe principle of black and white laser printer. Black and white laser printers are printed with black ink. Simple understand

18、ing, color laser printer is cyan, product, yellow, black four kinds of ink each to print, relying on color mixing color to form a rich color.1. the basic principle of laser printerUnderstanding the principle of black and white laser printeris the basis of understanding color printing, and it can be

19、used several times to illustrate its realization process.A raster image processor converts a printed page into a bitmap, then converts it to an electrical signal and sends it to a laser scanning unit."Negative charge" bitmap in a laser scanning unit, image page bitmap is converted to laser

20、 signal transmitted to the imaging drum, each pixel corresponds to a pixel value in the bitmap, there is emitted from the laser beam, no value is not fired.Whenthe laser is emitted, a small radiation point is generated on the image drum, and the imaging drum is charged with a charge in advance. The

21、point irradiated by the laser beam will be discharged, and the point not irradiated will still have an electric charge, which will pass through the process,The page bitmap is converted into the negative charge of "imaging drum"."Negative charge" to "like" a toner toner

22、and imaging drum on the nature of the samecharge, imaging drum rotation, "negative charge" by the developing roller, will be adsorbed on charged toner discharge, and the discharge point is not because of the repulsion is not to absorb the toner, such "negative charge" it was chan

23、ged into "as toner".The toner "positive" becomes a bitmap on the paper, and there is a transfer drum along with the image drum. Whenthe charged paper passes through the drum, the toner is absorbed onto the paper and becomes a printing image. Since the toner is easy to fall off, t

24、he printing paper also passes through a heating roller so that the toner is tightly adsorbed on the paper.The difference between 2. color laser printersBecause the color laser printer using four-color toner, so the charge generation step above "negative" and "positive" toner must

25、 be repeated four times, each time on the adsorption of different color toner, finally transfer drum will form cyan, magenta and yellow and black color image. Because the color laser printer has a repeat procedure of four times, the speed of color printing is significantly slower than that of black

26、and white printing.The latest color laser printing technology is called "primary imaging" technology. The key to this technique is the need to make the laser light tube small enough, in the presence of a light-emitting tube position, to lay down four light pipes corresponding to four color

27、s. At present, the cost of thisprocess is too high, so the "one imaging" color laser printer can not afford for ordinary users, but there is no doubt that this is the future direction of development.Principle of color synthesis in 3. color laser printerTelevision and film are colors that a

28、re synthesized by their own light. The synthesis principle is called the addition principle, and the three colors are red, green and blue, and the auxiliary color is white". Printing and dyeing and coating are formed by absorbing somelight. Therefore, the law is called "subtraction princip

29、le". Three yuan is blue, yellow and yellow, and the auxiliary color is "black"".Howexactly is the color of a color laser printer synthesized? Take HP's technology as an example. ImageRet2400 color layering technology is the technology adopted by HP. If the basic resolution of

30、 the print is 600DPI, the 600DPI resolution image can be calculated with the center distance between the pixels being 42 microns. HPuses Ultra Precise super fine carbon powder with a diameter of 5 microns. In fact, it can achieve 2400DPI effect. The center distance between the pixels is about 10 mic

31、rons when the resolution is2400DPI. That is to say, if thecolor printing is the result of the pixel resolution of 600DPI, then in a pixel, you can use four kinds of toner particles 16 x 16 cyan, magenta and yellow, black and white to modulate the pixel color, because the human eye is unable to disti

32、nguish these subtle color particles so, the human eye is mixed color effect after total. In the end this technology can provide many kinds of color, calculation method is arranged in a classic combination of examples: there are infinitely manysmall green, magenta and yellow, black and white five col

33、ors packed in five jars, now in touch with 16 balls into an empty jar,How many possible results will be produced? The calculated value is the number of colors that can be theoretically realized by ImageRet2400 technology, which is millions of, according to the manufacturer. According to the processi

34、ng level of nano materials now, carbon particle diameter of 5 nmis not a problem, then the existing 5 micron carbon particles can also be separated along the diameter of 1000 times, you can boldly imagine color technology development prospect about laser printer theory has, of course, fine particles

35、 to a certain extent for the human eye recognition has been completely lost to fine down meaning.Who should use a color laser printer first?Color laser printer price is higher for ordinary homeusers and manufacturers are also may not sell to households, so there is a part of what department or occas

36、ions can becomea color laser printer with it?As the article says at the beginning, there is no need to use a color laser printer, because the world is color, and we all need laser color printing, which is the high-end modeof output. But as far as the social consumption level is concerned, only some

37、people can use the color laser printer first.1. all departments that print commercial documents more frequentlyNot to mention a color laser printer can determine the success or failure of a business activity, but a vivid, creative copy may be an important weight to win a contract.If only occasionall

38、y there is a material, you can get to the print service in the street to print;If only a small amount of material, you can buy a color inkjet printer to print; if there is a size and strength, pay attention to their own image, modern print business frequently departments or enterprises, then the color laser printer should be to buy it.2. business typing, photocopying services or advertising, design departmentIf there is a certain amount of printing, the cost of laser color printing will be much lower than inkjet printing, which is obviousl