Fixing Device High-Temperature Cleaning Cycle

The patent implements periodic high-temperature cleaning cycles interspersed with normal operation. The cleaning unit operates at elevated temperatures only when toner accumulation is detected or at scheduled intervals, rather than continuously. This periodic high-temperature treatment effectively removes accumulated toner from the cleaning unit surface, preventing print stains while minimizing overall energy consumption by maintaining normal operating temperature during regular printing operations.

The patent changes the temperature parameter of the cleaning unit dynamically. During normal operation, the cleaning unit operates at standard fixing temperature. When cleaning is required, the temperature is increased to a higher level (higher than normal fixing temperature) to enhance toner removal efficiency. This parameter change allows effective cleaning without maintaining high energy consumption continuously.

The patent incorporates a feedback mechanism through a temperature detection member that monitors the temperature of the fixing rotating body and pressing member. Based on detected temperature and operational conditions, the system determines when cleaning is necessary. This feedback-controlled approach ensures cleaning is performed only when actually needed (when toner accumulation reaches levels that could cause print stains), rather than on a fixed frequent schedule, thus maintaining cleaning effectiveness while minimizing interruptions to productivity.

The system performs cleaning operations periodically based on operational conditions and accumulated toner levels rather than continuously or at fixed intervals. The periodic cleaning cycles are triggered when sensors detect conditions indicating toner accumulation, allowing the device to maintain high productivity during normal operation while ensuring cleaning effectiveness when required.

The patent implements periodic high-temperature cleaning cycles rather than continuous operation. The cleaning unit operates at high temperature only during scheduled cleaning intervals or when toner accumulation is detected, and returns to normal operating temperature during regular printing operations. This periodic approach maximizes toner removal efficiency during cleaning cycles while significantly reducing overall energy consumption and thermal stress on device components.

The temperature parameter of the cleaning unit is dynamically adjusted based on operational needs. During high-temperature cleaning cycles, the temperature is elevated to maximize toner removal. During normal printing operations, the temperature returns to standard levels. This dynamic parameter change ensures optimal toner removal when needed while minimizing energy loss and device wear during regular operation.