Color lithography is a complex process, and identifying the root cause of printing failures can be quite challenging. One common issue that often arises is the potential damage to the printing rubber roller, sometimes referred to as being "smashed." This problem has been thoroughly analyzed by manufacturers in Dongguan, especially those with extensive experience in producing high-quality industrial and printing rubber rollers.
Dongguan Haichang Hardware & Rubber Co., Ltd., established in 2001, is a leading manufacturer specializing in various types of industrial rubber rollers and printing machinery components. With a strong technical team, advanced machinery, and a commitment to quality and customer satisfaction, the company has built a solid reputation in the industry. Their core values include "customer first, quality first," "professionalism and thoughtful service," and "reputation-based, sincere service." These principles have driven their continuous improvement and growth over the years.
Printing problems are often misunderstood, and many times, they are not directly caused by the rubber roller itself. In fact, most issues stem from other factors in the printing process. When problems occur with the ink or water rollers, several possible causes may be involved:
1. **Ink Roller and Water Roller Mismatch**: If the ink roller is not working properly, it's usually due to an imbalance between ink and water, rather than a fault in the roller itself.
2. **Sticky Ink Roller**: A sticky ink roller might result from improper ink balance, poor hydrophilicity of the water roller, or contamination on its surface. If the new roller works well initially, the issue is likely not with the rubber material.
3. **Hard Ink Roller**: An ink roller that is too hard (typically above HS50) can lead to streaks or "bars" on the printed material, especially when printing solid areas.
4. **Hard Water Roller**: Similarly, a water roller that is too hard can cause issues with water distribution, leading to uneven water supply and potential roller jumps, which may result in visible defects on the final print.
5. **Unexpected Damage**: Even under normal operating conditions, a rubber roller has a certain lifespan. If it fails prematurely, it’s considered unexpected damage. Possible reasons include cracked bearings, excessive friction, or mechanical issues like broken ink rollers or damaged chrome-plated water rollers. Another common cause is "dry grinding," where the roller runs without ink or water, causing rapid wear due to lack of lubrication and cooling.
This kind of situation often happens during machine startups, especially when operators are not fully aware of the proper procedures. For example, in multi-color printing machines, unused sections may idle without protection, increasing the risk of damage.
By understanding these issues and maintaining proper equipment care, printers can significantly reduce the chances of rubber roller failure and ensure smoother, more efficient operations.
Source: http://news.chinawj.com.cn
Editor: Hardware Business Network Information Center
ZHITONG PIPE VALVE TECHNOLOGY CO.,LTD , https://www.ztongvalve.com