In daily production on Komori series presses, dampening and inking system faults are among the most common problems encountered by press operators and maintenance personnel. This Japanese-made machine is known for its stability, with mature H-UV drying and automatic registration systems, and even ink distribution across the inking train. If not addressed promptly, the consequences can range from compromised registration accuracy and print quality to extended downtime in severe cases.
I. Fault Symptoms: Ink-water imbalance causing plate scumming, tinting, or dry-up; inconsistent ink density from front to back; water roller bouncing and smearing the plate.
II. Cause Analysis: Improper pressure adjustment or roller surface aging on water and ink rollers; drift in dampening solution formulation (isopropyl alcohol / alcohol-free); mismatch in timing and phase of dampening and inking oscillation; roller bearing seizure causing bounce. Given that the Komori Japanese machine is renowned for stability, mature H-UV drying and automatic registration systems, and even ink distribution, troubleshooting should prioritize checking key components against standard parameters.
III. Maintenance Guide: Use feeler gauges to correct pressures on each ink roller, water roller, and against the plate/oscillating rollers; reconfigure dampening solution according to conductivity and pH; verify dampening and inking oscillation phase and reset if necessary; replace bouncing roller bearings or regrind roller surfaces.
IV. Daily Maintenance: Record dampening solution conductivity and pH daily; regularly clean water roller covers; establish a standard roller pressure documentation file. The above methods also apply to models such as LS440, LS629, Lithrone, GL840, and G40. For practical operation, refer to the PQC Print Quality Control system / KMS console and on-site conditions. In complex situations, it is recommended to seek professional maintenance assistance through the printm.cn platform.
