Pre press process of brochure printing factory

Pre press process of brochure printing factory

The final presentation of each printed product cannot be separated from the understanding and conception of the original manuscript, the generation of design creativity, and the processes of selection, production, plate making, printing, and post press processing. In the practical work of book design, the overall production process is as follows

Initial communication goals and intentions (clarify design and printing requirements, hand over customer information → conceptualize and create ideas for the original manuscript (including cover design, title page design, content layout, text, images, creativity, typesetting, printing technology, format, and page design);

Mid term adjustment ->produce black and white or color samples (revised by the publishing house or returned by the client) ->revise according to the corrected draft; The overall design is finalized in the later stage, and then the sample is produced again. The client is asked to modify and sign until the final version is finalized. The layout and plate making process, detailed adjustments, and submission of pre press samples and digital samples are carried out. The color and image adjustment process, blue paper proofreading, submission of print samples, post printing technology, and binding and shipping of the book involve the cooperation of multiple departments: book authors, designers, paper companies, publishing institutions, printing factories, etc. The specific rules and methods for improvement still need to be learned and mastered in practice.

The digital workflow for processing pre press graphic and textual information is based on information digitization, and is a system and technology for integrated management and control of graphic and textual information and production control information during pre press, printing, post press, and related processes. Pre press processing is an important workflow in printing and copying. With the digitization and networking of printing technology, the digital workflow of pre press processing has gradually formed and improved.

Pre press processing is the preliminary preparation work in the printing process. The quality of graphic and textual information processing by pre press production personnel directly affects the final printing effect. In the printing industry, practitioners are required to be proficient in computer pre press processing software, familiar with the basic workflow of printing technology, and have good ability to process graphic and textual information. They should be able to closely integrate computer desktop operating systems with printing professional technology.

The processing object of pre press graphic and textual information is mainly aimed at the quality and layout requirements of text, graphics, and images, in order to achieve the output of the printed film or plate. The processing of text mainly involves determining appropriate fonts, font sizes, line spacing, font spacing, and reasonable editing and processing of design layouts, and then designing and proofreading the layout of the text manuscript according to printing requirements. After correcting the image effect of RGB color mode before printing, it needs to be converted to CMYK image mode for printing output, with a minimum image accuracy of 300 pixels/inch. Convert black and white images to grayscale and monochrome bitmap. To determine whether there are color separation errors in each spot color version, avoid output errors caused by production reasons such as overprinting and trapping, carefully check whether there are color separation errors in each spot color version, and ensure that no spot color is designated as a color separation or a color separation is designated as a spot color.

Due to the CMYK color space being a type of color space that conforms to people's visual habits, it is easier to grasp color changes when representing colors and variations. Therefore, in general, image color correction and clarity adjustment are performed in the RGB color space, and then fine adjustments are made to the image in the CMYK color space. The storage formats for graphic and textual information are generally divided into JPEG, TIFF, EPS, and PDF formats. Due to the different image processing software in digital prepress systems, the storage format is also different. In order to utilize existing image files and be able to use them in different software, it is necessary to transfer the image format.

JPEG format is mainly used as an image compression format for network transmission, which can compress images to a large extent, save network resources to the maximum extent, and improve transmission speed

The TIFF format is primarily used for printing and outputting images, and can have any size and resolution. It can be used for image editing, drawing, and page layout, and is a commonly used bitmap image format

EPS format is mainly used for typesetting and drawing applications. It can simultaneously record images, graphics, and text in one file, carrying relevant textual information. EPS format is a mixed image format and the only file format that supports transparent white in binary image mode. EPS format is one of the most important file formats in prepress systems and can support multiple image modes, such as multi tone images

PDF format, also known as portable or portable file format, has the characteristic of cross platform operation and is mainly designed for various output targets of electronic files. It can be used as a universal file format in the prepress field

The completed graphic and text layout files need to be submitted to the output center for film or printing plate production. Some errors may occur during pre press output, such as "missing fonts in the file", "incorrect image mode", "incorrect image resolution", etc. To avoid wasting time and money costs, prepress production personnel should not only understand design and production, but also be familiar with the basic workflow of printing technology, and master the precautions for prepress design and production

In addition to paying attention to the above points, it is also necessary to carefully check whether the output auxiliary markings such as bleeding position, typesetting, alignment gauge line, cutting line, color code, etc. are added accurately and whether they meet the actual requirements of the customer's equipment, technology, materials, etc.

Pre press process of brochure printing factory