In the daily production of Komori series printing presses, sensor photoelectric faults are among the most common issues encountered by press operators and maintenance personnel. These Japanese-made machines are known for their stability, with mature H-UV drying and automatic registration systems, as well as uniform ink distribution across the inking unit. If not addressed promptly, the consequences can range from reduced registration accuracy and print quality to prolonged downtime in severe cases.
I. Fault Symptoms: Frequent false alarms from the paper detection system, inaccurate positioning, and failure of the photoelectric sensors, leading to repeated stoppages.
II. Cause Analysis: Dirty or aged photoelectric switches, shifted detection positions, contaminated reflector plates, and signal line interference. Given that Komori Japanese machines are renowned for stability, with mature H-UV drying and automatic registration systems and uniform ink distribution, troubleshooting should prioritize checking key components and standard parameters.
III. Practical Repair: Clean the photoelectric sensors and reflector plates, reposition and secure the detection points, replace aged sensors, and shield the signal lines against interference.
IV. Preventive Measures: Regularly clean the detection windows, rotate spare parts in stock, and record false alarm patterns. The above methods also apply to models such as LS440, LS629, Lithrone, GL840, and G40. For actual operations, refer to the PQC (Print Quality Control) system / KMS console and on-site conditions. In complex cases, it is recommended to contact professional repair services via the printm.cn platform for assistance.
