Manuscript is the basis of plate making and printing. The quality of the original directly affects the quality of the printed products. Therefore, it is necessary to select and design the manuscript suitable for printing, and try to maintain the style of the manuscript in the whole printing and copying process. The original includes reflection original, projection original and electronic original. Each type of original can be divided into photography, drawing, line and continuous tone according to the production mode and image characteristics.
Printing is used to transfer ink to the substrate on the printed graphic carrier.
Ink is the imaging material transferred to the substrate in the printing process.
Substrate is a general term for all kinds of substances that can accept ink or adsorb pigment and present pictures and texts. With the increase of the types of printed matter, the substrate used in printing is all inclusive. There are paper, plastic film, wood, fiber fabric, metal, ceramics... Substrate consumption is large paper and plastic film.
The machinery of Jinan printing factory is the general name of the machinery and equipment used to produce printed matter. Its function is to transfer the ink of the graphic part of the printing plate to the surface of the substrate.
Printing quality evaluation technology must also adapt to the characteristics of human evaluation. People's response to physical stimuli is often linear, such as the response to sound, light, pressure and so on. For complex stimuli such as halftone images, people's evaluation is usually linear, and people's reaction styles are usually different. For example, if the experimental samples are printed on different types of paper, some people will answer extremely, or very similar, or very different, rather than different to a certain extent, if the evaluators want to answer the degree of difference they feel about the printed matter; some people will answer cautiously, but the answers may be different, never very different. If we want to compare the results of different people's evaluation, we have to transform these responses into a common pattern.
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