模拟打样与数码打样的区别（The difference between analog proofing and digital proofing）

模拟打样与数码打样的区别（The difference between analog proofing and digital proofing） 模拟打样与数码打样的区别(The difference between analog proofing and digital proofing) Analog proofing and digital proofing difference,.Txt women remember: must eat, good fun, sleep well, drink well. Once exhausted, and other women spend our money, live in our room, sleep our husband, soak our boyfriend, but also beat our baby. The difference between analog proofing and digital proofing At present a lot of graphic output way, common Computer to Proof (Computer to Film, digital proofing) (computer output film), Computer to Plate (computer Computer to offline plate) and Press (computer to plate machine in Computer to / Paper), print (digital printing) etc.. The usual proofing is made after the printing page is finished, and the proofing is divided into digital proofing and simulated proofing. The simulation also called mechanical proofing proofing, it is the essence of the simulation is modeled after the printing, printing conditions (such as paper, ink, printing mode is basically the same, the printing plate) installed in the proofing machine, and get the proofs. Workflow is generally: Graphic Output Technology (get the original) - drying printing plate - analog proofing - to sign samples - the production of printing plates. The purpose of proofing is the following: first, prepress inspection samples, mainly to check the quality of the original. For example, the order of the original manuscript, whether the reproduction of the color has met the requirements; the layout of the page size, the layout of the image, the text, the correct line, and so on, whether there are omissions, etc., if there is a mistake, we have to amend. Print reference, mainly to provide the basic parameters of specimen or printing printing ink, such as formal, dot reproduction range, make the printing to achieve standardization and standardized operation. As the customer's signature, mainly to the sheet provided to the customer, if the customer approval, will sign on a sheet press, otherwise, printing enterprises have to modify. Simulation proofing due to a defect in its complex process, high cost, long production cycle and influenced by human factors such as a series of gradually withdraw from the stage of history, more and more printing enterprises using digital proofing technology. The so-called digital proofing, is to make the page color desktop system (or sheet) data, without any form of direct simulation method, the color printer (inkjet, laser or other means) output proofs, to check the pre press image page quality, provide reference proof to the printing process, and can provide basis to sign for the user. The usual digital proofing system mainly consists of two parts: color management system and output device. Many kinds of digital proofing systems with output devices, including heat transfer output device, output device, sublimation inkjet output equipment and laser output equipment etc.. In the color management system, there are two core technologies, PostScript interpretation technology and color management technology. The PostScript interpreter to ensure that users can get the file to explain the color management technology can ensure the correct output and printing output proofing color, at present many common color management software such as: Germany Best company (acquired by EFI) Bestcolor Australia BlackMagic digital proofing software, digital proofing software and Malaysia Star digital proof proofing software and the German GMG company's digital proofing software etc.. The prepress process using digital printing is as follows: The digitization process of the original manuscript - graphic processing technology - Digital Proofing Technology How should I buy my own digital proofing system? Generally speaking, in the study of digital proofing systems mainly include two aspects: first, the digital proofing system itself in the aspects of color reproduction and print quality of technical indicators; second, matching the printing effect and adaptability to printing production. As far as the products listed above, different software has its own characteristics. For example, Best Color digital proofing system is the most widely used digital proofing system in our country, It can make the inkjet printer general also have a better quality of the output performance of digital proofs. However, due to the defects of ICC technology, if the output parameters are set incorrectly during the proofing output, it will lead to no output. In addition, there is a lack of gray balance reproduction. The Australian BlackMagic digital proofing software only deals with spot colors when dealing with spot colors. The effect of selective color correction is not ideal, and the control of hierarchical curves is not very accurate. Malaysia Star proof digital proofing software by adjusting the density of color correction, color color and color printing by E Star Proof software to adjust the value of around 1.8. For 1-BIT TIFF file processing is powerful, you can output 200lpi precision images, but it requires higher operator, you need to have a good understanding of color. German GMG digital proofing products in single black, spot color and real dot proofing has a very good point. Therefore, users in the purchase of digital proofing products, it is best to meet the specific needs of enterprises and reference to the characteristics of each software to consider. In the purchase of digital proofing system, in addition to the purchase of digital proofing software, you have to choose digital output equipment. Digital output device color laser printing, thermal transfer / sublimation printing equipment and printing because of high cost, has not been widely used. Color laser printer output precision is not up to the printing precision, so it is rarely used in the field of digital proofing; and color ink-jet printing is used for digital proofing ink-jet printing flagship product, there are two types of foam thermal inkjet printing technology and micro piezo technology. The thermal foaming inkjet printer is used to heat the thermistor instantaneously so as to expand the ink droplets in the launching boring to the explosion, so that the ink is emitted. Because of the change in the chemical composition of the ink at high temperature, the color stability is poor. In addition, this type of printer head is a consumable, so the print quality of a change from bad process stability, using this technology equipment to maintain color is very difficult. Micro piezoelectric ink jet printing technology is to change the ink used voltage from nozzle, the nozzle is a solid piece, which ensures the stability and consistency of color, can meet the requirements of digital proofing output device, but also greatly reduce the output cost. Micro piezo technology is the Epson Corp's patent products, using vsdt can make the output of the smallest drop can reach 4ppl, so as to achieve the tiny dot printing requirements, images and text more clearly.