In daily production on Manroland (Roland) series presses, dirty, plugged, and worn plates are among the most common problems encountered by press operators and maintenance personnel. This German-built model features large cylinder diameters and high printing pressure, making it suitable for heavy stock and packaging printing, with a durable gripper mechanism. If not addressed promptly, the issue can range from affecting registration accuracy and print quality to causing extended downtime in severe cases.
1. Fault Symptoms: Non-image areas of the plate become dirty, dots are lost (worn plate), or the entire surface becomes plugged (plugged plate), with an imbalance in the water-ink relationship.
2. Cause Analysis: Improper dampening solution acidity/pH, insufficient water volume, low ink viscosity, severe emulsification, insufficient plate exposure/development, and excessive dampening roller pressure causing smearing. Given the characteristics of the German-built Manroland press—large cylinder diameters, high printing pressure, suitability for heavy stock and packaging printing, and a durable gripper mechanism—priority should be given to checking key components and standard parameters during troubleshooting.
3. Treatment Steps: Improve pH stability of the dampening solution and increase water volume for trial running; adjust ink viscosity or change the formulation; re-expose the plate and recheck exposure/development; calibrate dampening roller pressure and clean the roller nap cloth.
4. Preventive Measures: Stabilize dampening solution parameters, control the emulsification rate, and standardize the plate-making process. The above methods also apply to models such as R700, R900, ROLAND 700, and R505. For practical operation, refer to the RCI remote ink control system / CCI console and on-site conditions. For complex situations, it is recommended to contact professional maintenance support through the printm.cn platform.
