Quality appraisal of printing presses

Printing press is a machine for printing text and images. It is also a type of copier. It is generally a product specially used for printing plants. It covers a large area, has stable equipment and is fast. The newspapers you see every day are formed by printing machines. Modern printing presses generally consist of mechanisms such as plate loading, ink coating, imprinting, and paper feeding (including folding). Its working principle is: first make a printing plate with the text and images to be printed, install it on the printing press, and then apply ink manually or by a printing machine to the areas with text and images on the printing plate, and then directly or indirectly transfer it to paper or other substrates (such as textiles, metal plates, plastics, leather, wood boards, glass and ceramics), thereby replicating the same printed matter as the printing plate. The invention and development of the printing press played an important role in the spread of human civilization and culture.
Zhongke Testing provides printing press quality appraisal services.

Printing press quality appraisal can be analyzed from the following aspects:
1. Appearance inspection: Check whether the appearance of the printing press meets the requirements, including whether there is damage, deformation, rust, etc. on the surface of the machine.
2. Electrical test: Check whether the electrical system of the printing press is normal, including whether the power supply voltage is normal, whether the control system is normal, whether the protective device is normal, etc. 3. Printing quality inspection: Check whether the printing quality meets the requirements through printing samples, including whether the printing pattern is clear, whether the lines are uniform, whether the image is distorted, etc.
4, printing speed and printing accuracy check: Through the actual printing test, check whether the printing speed and printing accuracy of the printing machine meet the requirements.
5, durability test: Through long-term operation test, check whether the durability performance of the printing press meets the requirements, including the stability, failure rate, maintenance, etc. of the printing press.
6, safety test: Check whether the safety performance of the printing press meets the requirements, including whether the safety protection device is normal and whether the operation safety meets the requirements, etc.

ISO/IEC 15775:2022 Information technology Office equipment Method for measuring image reproduction of color copiers and multifunctional devices with copy mode using printing test charts
ISO/IEC 17629:2014 Information technology Office equipment Method of measurement of first print time of digital printing equipment
IEC 62899-302-3-2021 Printed electronics Part 302-3: Equipment Inkjet Imaging-based droplet orientation measurement
GB/T 4313-2014 Information technology Office equipment General specification for woven printing ribbons for dot matrix printers
GB/T 16685-2008 Information technology. Office equipment Printing equipment Method of measurement of throughput Class 1 and 2 printers
T/CASME 331-2023 Information Technology General Specification for Two-Color (Black/Red) Inkjet Printers
GB/T 34988-2017 Information Technology General Specification for Toner Cartridges for Monochrome Laser Printers
GB/T 16685-1996 Information Technology Printing Equipment Method of Measuring Printer Throughput
GB/T 9698-1995 Information Processing General technical requirements for continuous format paper for impact printers
GB/T 9314-1995 General technical requirements for serial impact dot matrix printers
0GB/T 9312-1988 General technical requirements for line printers
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