What factors affect the print quality?

In the process of business transactions, to make the appropriate print quality evaluation is particularly important, the complexity of color printing technology it is well known that a print production, often after a dozen steps to complete, which involves the company, staff, etc. , different environment, different time, also for print or require different evaluation way. So in this process, the need to establish some norms and the corresponding observation conditions. Therefore, we only have restricted the periphery environment factors, to print, the evaluation is subjective, it is truly fair and objective, to reduce the row caused by environment, so the lighting environment and standard light source is a must. Print off color color difference can be divided into ( 1) Original color: color reappearance of the original order is the purpose of printing copy, print and the extent of the manuscript of true and false difficult points is the subjective evaluation of the highest standard. ( 2) With batch chromatism: refers to the same product in the same hue in the same place, between different image color error. ( 3) Similarities and differences of color: refer to the same color error between different batch of products, if each batch of printing color slightly different, when they put together, will feel these goods with old and new customers, the inner quality of even doubt it will like appearance is not stable, will cause mistrust of the commodity, nature will cause dissatisfaction with the manufacturers of printing products quality. As a customer and printer all want the best value of the color error is zero, but due to the limitation of various conditions in practical production, it is impossible to completely eliminate the color error, only by strengthening quality control of each link, make the color of the product quality control within the prescribed standards for color difference. Color tolerance refers to the print and the customer can accept color difference between the original or artwork &proofing tear sheets. Subjective evaluation for subjective evaluation of color print quality is using visual method and visual observer print and compared with original or printed version sample, to make their own judgments, main consideration is the color print quality to what extent will only be accepted by the customer. No matter in the printing process, or check the quality after printing, printing operators or quality inspectors shall, from time to time, with his feeling and experience, on the basis of replication fidelity and realistic, with the quality of the color printing products. Replication fidelity refers to print on the color of the original order tone reproduction. Print is a replica, from prepress processing to the entire color reproduction process of printing, the original is on the basis of our work, the reappearance of the original color order is the purpose of the printed copy. Make the print and the extent of the manuscript of true and false difficult points is the subjective evaluation of the highest standard. When there is no original comparison, the color of the print quality was related to the sense of reality, which require it to conform to most people's memory. Average person of common objects are in the habit of first impressions are most lasting, if print in the main body color is different from the real object color, this printed matter cannot be called high quality replicas. In a word, the color of the print quality of subjective evaluation criterion is to copy the real, natural, harmonious, and, of course, sometimes with the intention of the client or slightly change the purpose of the product. The definition of the manuscript in past times, most of the original slides from photography, photographs, and hand-painted color draft, in the process of color separation artwork &proofing, such as can be seen as close to the original effective color copy. The printing has approved artwork &proofing guests as guidelines, as long as you can with to 90% generally considered qualified. But now the definition of computer s manuscript more, such as a guest on a computer screen or see satisfactory color printed paper samples, they will think that this is the original. Regardless of any type of manuscript, they recorded or show color is not necessarily can under the condition of general printing, because each kind of color reproduction system has its color gamut limits. Material in the production process image is original, colour separation process based on intake of phase as manuscript, printed with artwork &proofing as with color target. Objective evaluation of the objective evaluation of color print quality is a statistical method to calculate the subjective evaluation results, and its conversion to the corresponding physical quantity, used as an objective evaluation standard. Can eliminate the influence of artificial factors in the evaluation, so by the standardization of unified standards of justice to the color of the print quality and ultimately make it more in line with the majority of people's subjective evaluation criterion. Objective evaluation method mainly USES the specific measurement instruments and tools, and to print the image a print out some of the standard measuring elements. Only by measuring, can to some extent make printing quality automatic control possible. Color quality and production control in order to produce high quality color print, must strengthen the quality control of production process, and quality control mainly depends on the objective evaluation standard of the product, develop a rigorous specifications, materials with the aid of all kinds of instruments to objectively measure and evaluate the color of the print quality and other aspects of the quality. Every link to implement information management, each step has a detection tools to detect, otherwise there will be many mistakes. Nowadays, with the advancing of technology, the printing of the color control means have further development, the new color management system makes the control of printing color becomes convenient and more effective.