Pre-job work refers to the preliminary work of the printing process, including typesetting imposition, color separation scanning and so on. His work is mainly on the mastery of the software used in the pre-press work of the computer, the basic workflow of the printing process, and the good graphics and image processing capabilities.
When we get the printed matter, we are often disappointed, because we often find that our own design concept is not well reflected, or some colors are not printed properly, so the design is somewhat biased. How to make our design ideas better realized by printing? This is the problem to be discussed below.
I think that to make printing a design service, we must do the following: First, the designer should have certain pre-press knowledge; second, pre-press preparation; third, close coordination and communication. In this way, the design can be unconstrained, and the development of computer technology also supports the implementation on the computer screen. However, due to the limitations of equipment, process technology and communication understanding, and the lack of printing knowledge by designers, the printing company can not match the design and printing, resulting in unsatisfactory printed works, so in printing When the work is finally released, the design company must be required to cooperate with it. The designer's understanding of the printing knowledge can ensure that the design idea is unimpeded and better realized.
1. Prepress knowledge that designers should have
1 If the designer's print uses a cross-page design, it means that the text or image on one page will span the next signature. At this time, it is best to first determine the paper guide and the gripper at your printing. The location in the factory, and then place the material as close as possible to that area; in addition, try not to split a text into two signatures to print, which is very easy to make mistakes.
2 Always guarantee your bleeding position (usually 3mm, but with the development of technology, some printing factories have been <3mm, so these need to communicate closely with the printer and the printing house in order to save money). Any image that exceeds the cutting line must have a certain margin outside the cutting line so that people can correct the minor version of the plate when trimming and cutting. This margin is called bleeding. Therefore, when cutting a pile of pages, appropriately increasing the amount of bleeding can improve the cutting quality of the entire job.
3 For the printed documents to be sent out, the die-cut lines should be stored in a separate layer or contacted by telephone to ensure that the printed parts are separated from the die-cut lines.
4 pairs of paper choices. There are various types and specifications of paper, which must be chosen to suit the work. For example, some papers may be too thick to be folded many times; some papers may not be suitable for UV coating, and some papers may take many days to dry thoroughly. Some papers can only be coated with water, otherwise they will be damaged by the binding equipment. These factors are best considered by the designer.
5 When you are still in the concept stage, you should get in touch with the binding factory and let them know what you are thinking. Not only can they help you achieve your goals, but they can also give you a lot of cost-saving advice. [next]
When the 6 file is determined to be the final draft, the unnecessary path created in Photoshop must be deleted. RIP is cumbersome because some unnecessary paths are left in the image.
7 Designers occasionally use the Macromedia Fontographer software to modify fonts. Although they send new, modified fonts, ATM often cannot identify it as a valid font file. At this time, you need to do font replacement, sometimes you can only replace it with other fonts. For the designer, most of the modified fonts are title words, so in the illustration software to set the title word, it is best to turn the font into a path after designing the final draft, and then put the word into the Spring and Autumn typesetting software, so The font becomes a vector file, the font file is no longer needed, and the error is reduced.
8 After the finalization of the designer, the designer should pay attention to the transmission of the work: whether the image is included in the file. The designer puts the linked picture in the typesetting software, but when sending it to the output center, forgets to send the picture placed in the file to the output center together, so when outputting, it is not a picture error, or a low resolution. Rate of pictures. Or the designer does not link the images at all, such as the documents produced by the finance company. The images in these files are often copied and copied from Microsoft PowerPoint or Excel into the file. The layout file only contains one WMF file. When the image is processed in the output, it is not the line width error, it is the color cast. So recreate the illustrations in Adobe Illustrator or some other suitable illustration software, don't put them into Illustrator by grabbing or by clipping. The best way is to hook the edges and then output them as EPS files. Go to Illustrator.
9 The influence of the resolution of the designer in Photoshop on the image, the small resolution will affect the quality of the printing. The resolution is too large and will affect the running speed of the computer operation. The image resolution should be twice the number of printed network lines, lower than 2 times can not meet the printing quality requirements, more than 2 times is wasted. For example, if the print is 175 lines, the image resolution should be 175×2=350dpi. The image scaling should preferably not exceed 20%. If there is spot color printing, we should establish a spot color channel, and pay great attention to the pressure overprinting method. Why not use the right resolution to ensure the best print quality with the smallest memory!
The 10RGB image must be converted to CMYK to avoid color inaccuracy or even multi-color graying. RGB is generally used in design or color spray, and CMYK is used in print. So you should pay attention to the process of making prints, because the color will become dim during the conversion from RGB to CMYK.
Pay attention to the Apple (MAC) archiving process, paying attention to the PC and Apple (MAC) compatible formats. The designer himself has to make corresponding cooperation for the post-printing. When the designer understands the basic printing knowledge, such as understanding some printing processes: such as UV, hot stamping, hot silver, laser, etc., it will be your work. Play a finishing touch! [next]
2. Pre-press preparation
1 All film density should be above 3.8, bleeding position ≥ 3mm, the finished product size is correct; and the film can not be scratched, creased, and kept clean; all hot stamping contents such as pressed on the base map or background color, the corresponding content can not Make anti-white on the base map or background color to avoid inaccurate set; the film must have clear color-coded colors to avoid misplaced color; the film of the film is correct, avoiding serious loss of the printing plate; if it is a cross-image, glue The first page of the book cover 2 is connected with the first page of the text, and the third page of the last page of the book is connected with a 3mm overlap connection. The other texts are left with 0.5-1mm overlap connection, so that the cross-image cannot be connected. The binding of the book cover 2, the seal 3, the first 8P and the last 8P at the book opening must be more than 8mm from the spine, so as not to be clear after the book is opened; the letter of the saddle stitch should have a certain distance from the incision, general situation Next, the distance from the first post to the incision is preferably ≥ 3 mm, and then each post is increased by 1 mm, that is, the distance from each post to the incision is preferably ≥ 4 mm, and so on. The color draft provided should be the final proofed manuscript. If the text has been modified to reproduce the film but has not been re-sampled, it must be clearly marked in the corresponding position of the proof sheet to avoid misunderstanding. If the color is changed, you must re-print it to avoid printing and color problems.
2 If it is from an electronic file, please pay attention to the design software used by the printing house. The software is best: PDF, Acrobat Professional. QXD, Quark Xpreess. AI, Illustrator. INDD, InDesign. PM, PageMaker. FH, Freehand. And clearly indicate the software category and version number used, such as Chinese version of InDesign CS2, file format, file format is best:
PDF: Fonts and high resolution images must be embedded. PS: Contains fonts and high-precision graphics.
EPS: Contains fonts and high-precision drawings. TIFF: Image format; basic file requirements.
3 pattern: Provide the final pattern of the electronic document. If the pattern is different from the electronic document, it must be clearly marked on the paper and the file format.
4 Size: The finished product size of the document must be informed. Any scaling and adjustments must be clearly identified. The composition of the file should be divided into three folders: font, image and typesetting, which are stored in a standardized manner. [next]
3. Close coordination and communication
1 Communication in the design process: To ensure that the design idea can be better realized by printing, if there is a special design or a design involving a new process, it is best to determine whether the design idea can be finally realized before the design plan is determined. Consultation with printing companies that are better implemented and whether there are other better design methods, etc. It is better to involve the printing company in the process design to avoid subsequent problems. In addition to providing sufficient professional technical support, the printing company should also actively share with customers the successful experience of other process design cases.
2 Communication in the pre-press production process: Although the development of computer technology has enabled computer makers to independently create a fairyland scene, there are certain process restrictions in the subsequent printing and binding process, making it impossible for their works to be displayed in the world. Therefore, communication in the pre-press production process is more important. The printing company should provide sufficient professional technical support to the designer, and the designer must produce and process the electronic document according to the printing company's actual tooling and craft level according to the printing company's requirements.
3 Communication in the whole process of printing, the two sides should maintain close contact, timely discover and quickly deal with various problems found in the whole process of printing and possible failure to meet the design requirements. When a printing company discovers a problem, it should first try to satisfy the equipment, process and technical problems. If it cannot be solved, it must be promptly presented to the customer. If necessary, it should provide sufficient professional advice for the customer to make a decision. Customers should also promptly and promptly resolve the relevant issues to avoid further losses and delays. If it can be handled on site, it is the best communication and solution.
4 After the delivery, after the product is delivered, the two parties can maintain corresponding communication, sum up experience, and grasp the customer's demand orientation, which is conducive to long-term friendly cooperation. In particular, magazine printing allows the relevant staff to summarize and communicate with each other, which helps to shorten the cooperation and improve understanding and make the subsequent cooperation more enjoyable. A good work, a successful project is the result of the joint efforts of the design company and the printing company, which is generated by the recognition of the majority of readers. Therefore, the creator's creativity must also be dissolved in nature, dissolved in readers, transcend nature, and transcend readers...
In summary, the designer should have a certain pre-press knowledge; accurate and pre-press work and humanities communication and coordination work, can fully reflect the design idea through printing, no longer stay at the moment when the printed matter is born. Have a regret!
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