稿-分色稿-出菲林-制版-印刷（Manuscript - color separation - out of film - plate - printing）

1、稿-分色稿-出菲林-制版-印刷（Manuscript - color separation - out of film - plate - printing）Manuscript - color separation - out of film - plate making - printingProcess descriptionBasic process: manuscript - Colour Separation - Film - plate making - printing.One, the manuscript is the manuscript that we want to

2、print, should not need me to explain more.We know that printing usually refers to the concept of "four-color printing" because the colors in printed matter are made up of four colors, C, M, Y and K. Thousands of different colors are made up of these colors according to different proportion

3、s. Its blending principle is the same as watercolor, gouache and so on.We usually contact printing, such as books and magazines, posters, etc., is in accordance with the four-color overprint. That is to say, in the printing process, the substrate (paper) in the printing process has experienced four

4、times printing, printing a black, a defective red, a cyan, a yellow. When finished, the four colors are folded together to form the colors on the screen.Two, color separationColor printing is a professional term, refers to the various colors on the manuscript is divided into yellow and magenta and c

5、yan and black four colors of the color; in computer printing design or graphic design image software, color is color image scanning mode or other sources are converted to CMYK mode.General scan image for RGB mode, if you want to print, you must color separation, divided into yellow, magenta, green,

6、black four colors, this is the printing requirements. If the image color mode to RGB or Lab, the output is probably only K (black) with dot version, namely RIP (RIP is used to image data interpretation for the film needs data, the interpretation of the language is PostScript. PostScript is a program

7、ming language that is best suited for printing images and text, whether in paper, film, or non - material CRT. In today's jargon, it's a page description language. It was launched by Adobe in 1985 Only the color information of the image is interpreted as gray.In Photoshop, the color separati

8、on operation is very simple: you just have to convert the image color pattern from RGB mode or Lab mode to CMYK mode. The specific operation is to execute Image/Mode/CMYK. In this way, the color of the image is represented by the pigment (ink), with 4 color channels. When the image is output, the do

9、t is generated according to the channel data of the color, and is divided into yellow, magenta, cyan and Hei Sizhang color separation films.The color separation we understand here is to separate the originals into separate cyan, magenta, yellow, and black. It's not difficult to do that. When the

10、 four colors in Fig. 2 are printed on the paper, the effect in Fig. 1 will be achieved. Of course, there are some technical problems, mainly in the following aspects:1, the definition of network: to understand the definition of the network, we must first understand the concept of continuous, harmoni

11、c, discontinuous. Paintings or color photographs are used continuously to reflect the shades of the screen, i.e., where the color is concentrated, the pigments pile up thickly, and the areas where the colors are weak are somewhat thinner. However, the printing of pictures or color photographs, is to

12、 use halftone to show the color of the screen shading layer, specifically speaking, is the use of dot size to show the screen, each of the small parts of the color of the shade. In print, with a magnifying glass, you can see the level from locations shown (Figure 3) local outlets, the outlets of sma

13、ll local color light, (of course, if you see a piece of color and no idea, that is the field, field is 100% outlets, that all is dark. Networks of varying sizes make up a variety of layers. The shape of the network there are various, round, square, diamond, plum shaped and so on, the size of the net

14、work is a key factor in deciding the thickness of printing in the color, the size of the network according to the "number", namely: a few outlets, can also be used. For example, 50% of the outlets are 50% of the outlets. In addition, we can see that the dot in Figure 3 has a certain angle,

15、 and this is the angle of the screen,Screen angle is a very important concept, because if the network does not fit, it is prone to moire, moire refers proofing or printing plate due to yang angle a collocation unsightly reseaus and graphics appear improper. There are ways to avoid it:Between 1. and

16、three pieces of magenta and blue black color strong version of the screen angle difference must be not less than 30 DEG, 90 DEG in yellow version;There are 2. light colored version, light colored version of the ink may deepen;3. printing as the original, the various color version selection screen an

17、gle to be staggered with the corresponding document on the screen angle, such as the original yellow version of 90 degrees, 75 degrees, magenta green version, black version of 15 degrees 45 degrees, can use the yellow version of 45 DEG, 30 DEG, magenta, green version, 60 degrees the black version of

18、 90 degrees.Another concept is the number of lines added. This concept is somewhat similar to the resolution we usually use. General printed line number should be: the picture to 280DPI or more, the specific depends on the paper, the general newspaper 150DPI, magazine for 300DPI, good paper magazine

19、, you can use 350-400DPI. As for the method of its application, you will understand when you come into contact.2, because the last overprinter printing needs four ink in the printing process, such as the first printed black print cyan, to ensure that both the overprinter accurate alignment, in some

20、poor quality prints can be seen in the "painted face", several color without registration, print out the East West beyond recognition.3, printing color sequence: printing should also pay attention to C, M, Y, K four color printing sequence, for example, the first printed K, C, Y, print pri

21、nt print M. This is a color order, which is determined by the printed matter in accordance with the specific printed matter.Three, film: film is a very critical thing, in fact, the photographic film with us is the same. But the film is black and white, and you should be the same as the black and whi

22、te film. So the four colors in Figure 2 to the four Zhang Feilin film, it is black and white, until the Printing House seats, what kind of color is what kind of ink to print it.Four pieces of film correspond to the following: C, M, Y, K, what kind of film do we need to do? Is actually very simple, y

23、ou can directly take a CMYK mode of the picture (printed in common bitmap image format is TIF) to direct a film, don't you put each color separately, this is the computer to do something, we can see in the Photoshop, an image of a CMYK (most often we in picture RGB mode can be converted into CMY

24、K again), the panel, you can see that there are four kinds of channels are expressed in four colors. (Figure 5) take it directly out of the film. It is not difficult to operate a phototypesetting machine with special software.Four, plate: film out. Plate making is very easy to understand, the operat

25、ion of related equipment, you learn in practice.Five printing: printing, lithographic printing, gravure printing, letterpress printing, screen printing and other different types, because of different color printing principle, the film will also have some differences, for example, screen printing, fi

26、lm direction should be reversed. (like a seal). Specific reasons, you go to the actual to understand it.Before printing production knowledge1, the layout of the text from the cutting edge must be greater than 3mm, so as not to cut to be cut. The text must be curved or framed. Do not use the system w

27、ord, and if you use it, you will have white nodes at the stroke. The text into curves, please note that the word or whether there is overlap or skip row disorder phenomenon. If the stroke is interleaved with white nodes, it can be processed with scattered instructions. Do not use color overprint bla

28、ck text.2, not to the screen or print color printing color requirements, customers must refer to percentage of CMYK chromatography to determine color production.At the same time note: different manufacturers of CMYK chromatography by the use of paper, ink type, printing pressure and other factors, t

29、he same color will be different.3, the same document print in different times, there will be color difference, color difference degree within 10% of normal (due to ink quantity control each have different, due to large) printing machine, such as the old file to care for this and lose that, printed,

30、in order to avoid the color difference is too large, should the number of color printing company reference code the.4, block color, try to avoid the use of dark or full version of the combination of color, otherwise, after printing, easy to produce back printing situation. Business card printing due

31、 to a small amount of positive and negative areas with the same large area of color, it is difficult to guarantee consistent and no ink points, and therefore can not be used as a reason for return.5, color or shading map of not less than 10%, in order to avoid printing products not present.6, please

32、 use the CoreIDRAW 9 Chinese version design documents, as the group version of the need, Apple design documents will be converted to PC format. In CoreIDRAW, images, photos must be based on the TIFF file format, CMYK mode input, not in the format PSD file input, all objects drop shadow images, input

33、 separation and transparency, filter material using OWERCLIP coloring, please turn a bitmap in CoreIDRAW (color CMYK32 bit resolution 300dpi, anti aliasing compensation using a transparent background color description is tick). In order to avoid the group edition caused by image mosaic. If you reduc

34、e the bitmap by adjusting the node, turn the bitmap again (option as before) to avoid the part of the bitmap output being obscured. The use of corelDRAW "filters" treated objects also turn a bitmap (options as before), to ensure foolproof.7, all input or drawn graphics, the wire frame thic

35、kness of not less than 0.1mm, otherwise printed matter will cause broken line or unable to show the situation. In addition, the line frame can not be set "zoom with the image", otherwise the printed output will form irregular lines.8, when the object layer was gradually frame precise tailo

36、ring, please turn it into a bitmap (with sixth point method), because the placement of frame layer and other object group gradually after rotation, the rotation direction of the gradient together and not. In addition, any gradient objects shall set the width of the edge ", because the output ma

37、chine interpreted, sometimes causing gradual layer edge coloring problem.9, double fold business card, please mark the line and the reverse side.10, because the network from a single copy of the draft can be proofread, if there is strict standard color of color, can not guarantee the same.11, regard

38、less of business cards, cards, regardless of single-sided and double-sided, regardless of the number of people or how many styles, will be placed on the same page, do not paging production.12, the completion of the manuscript does not need to draw cross line and cut line, you can use 2 invisible lin

39、e frame to act as the production size and bleeding line 92 x 56mm, cut after 90 x 54mm (that is, four sides of each 1mm bleeding). In case of special size, please specify in the order form and the uploaded document.13, pay special attention to any picture, color or line beyond making size, please be

40、 placed in the frame. Do not use white color cover, so as to avoid a version of the puzzle.14, the above considerations must make the final inspection is completed, "selected text information" at the midpoint CoreIDRAW option file, can display all the documents, including text is to curve

41、(if all the words have to curve, text statistics project will display: no text objects in this file in the bitmap,) is CMYK (bitmap object should be CMYK-32 bit into the survey), and the frame is completely for coloring CMYK color mode, do not use RGB color. Whether the frame is still set, "zoo

42、m with the image", etc., and indicate your company's business, membership number, contact person, delivery address, contact number, box number, in order to ensure foolproof.A brief introduction to pre press knowledge - screen printing and offset printing1 screen printing is an ancient print

43、ing method. There are many aliases for screen printing,Such as silk paint printing, silk leakage printing, silk screen printing, yarn printing, screen printing, and so on. Screen printing first web material with silk, so in the early Silk Sxreen Printing said the screen printing (screen printing). S

44、ince the mesh has been replaced by a large number of synthetic wire mesh, Screen Printing (screen printing) has been used.The basic principle is: part of screen printing screen printing ink through the hole, stencil to substrate; a printing plate on the remaining part of the mesh blocked, not throug

45、h the ink on the substrate, forming a blank.The traditional plate making method is manual, and the modern method is photochemical plate making method. This plate method to screen for support, will tighten the screen on the network box, and then in the online coating photographic, forming a photosens

46、itive film version, and then close the print positive plate, in the version of the film after exposure. Developing plate without ink part by light curing version of the film will be formed. Mesh seal, printing ink impermeable, printing ink to the part of the mesh is not closed, the printing ink thro

47、ugh the formation of black spot on the substrate.Plate printing and letterpress printing, gravure printing, lithography printing, and called the four major modern printing. Screen printing is one of the main printing methods in hole printing. Printing and screen printing are also known to write hole

48、 edition, printing, typing, printing stencil printing and stencil printing printing floor empty.Flat, concave, convex, three printing methods are printed by the printing plate to transfer the ink to the object, and screen printing is through the screen of the printing plate to make the ink leak to t

49、he substrate. Therefore, screen printing can be used more and more types of ink, the substrate is not limited to paper, class, metal, plastic, wood, etc. can screen printing.2, offset printing technology has been able to develop at such a fast pace, one of the most important reason is offset printin

50、g advantages.The traditional offset printing technology adopts the principle that water and oil are not mixed, and uses the offset printing technology to print through the middle transfer rubber cylinder. In two, thirty years, with the development of the new technology of polymer materials, laser, p

51、rinting materials (including printing, printing ink, fountain solution and blanket etc.) and the corresponding plate technology has made great progress, which laid the foundation for the offset printing can meet the market's demand for high quality printing, high printing speed, low the cost of

52、printing.At the same time, because the offset by indirect printing (intermediate transfer printing rubber roller), pressure can be smaller and better contact with the substrate, to ensure a good graphic transfer, improving the scope of application of printer materials and printing plates, but also f

53、or the design of mechanical structure more reasonable guarantee.Not only prepress technology, offset material has made great progress, offset printing equipment also along with the rapid growth of offset printing market and progress. The printer has invested a lot of money and effort, first of all,

54、the structure of the offset press has been greatly improved, and even new design. Make it more suitable for high speed, high quality printing. Such as high-speed offset paper machine development, pneumatic cardboard, high-speed delivery of paper teeth, new side pull gauge and other new institutions

55、to improve and develop; developed a new ink delivery system. At the same time, a variety of drum arrangement, roller diameter and paper transfer and turnover mechanism are adopted to meet the different requirements of various printing materials. It is suitable for printing more materials with differ

56、ent printing materials.In the field of printing automation, offset printing equipment is one of the fastest developing printing equipment. From the laser Phototypesetting, prepress electronic color separation and page make up to digital proofing system (CtProof), digital film (CtFilm), digital imagi

57、ng (CtPlate) technology; from the automatic ink printing machine on the volume, press the remote control system, plate scanning device, quality control device to digital "single productivity control" in the system, the offset printing equipment to improve production efficiency and reduce l

58、abor intensity, reduce preparation time, reduce consumption and become the market leader in printing.In addition to the rapid development of traditional offset printing systems,The offset printing family has added many new members. For example, with the development of market development, and gradual

59、ly the waterless offset printing version, greatly promoted the development of waterless printing system, improved due to the use of fountain solution to a series of problems such as the problems caused by the quality of printing, ink balance problems, the problem of ink emulsification, paper by water deformation problems and environmental pollution.Pre press knowledge collection - Talking about reducing printing cost from pre press designHow to reduce the cost of bo