Compared with foreign countries, the quality of domestic offset presses needs to be improved

Compared with imported small offset printing presses, there is a significant gap between the product quality and technical level of domestic small offset printing presses, and the quality needs to be improved.

According to industry analysis, the gap between quality, technology, and imported products in domestic small offset offset presses is sixfold:

First, due to the different ways of product design and development, some introduce products, some counterfeit foreign models, and some are both, so the product's size series is quite complicated.

The second is that the printer model does not meet the printing machine product model preparation method. The large printing machine that is more than the four-up number basically performs well. Most manufacturers of small offset printing press use the initials of the company name to replace the printer and the printing plate type. Numbering.

Third, the technical conditions of the various lithographic printing machines vary widely. Many companies fail to meet the current industry standards or merely meet the standards. No insurance factor is set aside, and the foreign product factory standards are much higher, such as The quasi-accuracy is higher than 30%, and the same accuracy can be maintained at high speed, at the same speed, and at different speeds. Registered accuracy industry standards require 0.033, actual measurement is also higher than our national standard by more than 50%, and the geometric accuracy of the main components is higher than 60% of our industry standards.

Fourth, the gap in stability, reliability, and failure rate of a considerable number of companies' products is large. According to inspections, under the same conditions of use, domestically produced machines have undergone 20% or more unqualified inspections, and the breakdown downtime is relatively high. The replacement of parts and related functional components is much higher than foreign products. In addition, water leakage, oil leakage, and corrosion are also serious.

Fifth, the automation level of domestic small-size printing presses still needs to be improved. Foreign products have solved the paper quantitative prediction, automatic version, automatic washing rubber roller, ink remote control and fault diagnosis and other functions. The satellite-type five-color small lithographic printing machine introduced abroad adopts water-free ink and realizes quantitative transmission of ink by anilox rollers, which simplifies the structure and improves the quality of printed products. Some products use double-diameter impression cylinders and triple-diameter transfer cylinders, which reduce the number of four-color machine papers from the unit to the junction and 12 times, which also improves the printing quality.

Sixth, although domestic companies have introduced computer-to-plate machines, some companies are conducting feasibility studies on digital printing machines. Since 1998, five domestic companies have introduced four-color small offset printers, but the gap in high-end products is wide. Still big.