Image Forming Apparatus Toner Distribution Control

The patent applies local quality by differentiating the treatment of toner concentration across different developer transport members. When the container toner concentration is high, the system selectively decreases toner concentration at the downstream transport member while maintaining or increasing it at upstream transport members. This localized differentiation prevents toner fog at the critical downstream region where it contacts the latent image carrier, while preserving sufficient toner supply from upstream regions.

The patent implements dynamics by making the toner concentration distribution adaptive and time-varying. The controller dynamically adjusts the voltage waveforms supplied to developer transport members based on real-time feedback from the toner concentration detector. When high toner concentration is detected, the system actively modulates the concentration distribution across transport members, creating a dynamic response that prevents toner fog while maintaining image quality.

The patent applies local quality by differentiating the treatment of toner concentration across different developer transport members. When the container toner concentration is low, the system selectively increases toner concentration at downstream transport members while decreasing it at upstream transport members. This localized differentiation ensures sufficient toner reaches the latent image carrier to prevent thin spots, while avoiding excessive accumulation that would cause toner fog.

The patent implements feedback by using a toner concentration detector to continuously monitor the developer container and adjusting the voltage waveforms of developer transport members accordingly. The controller receives feedback from the detector and dynamically modifies the toner distribution strategy - increasing downstream concentration when container levels are low to prevent thin spots, while decreasing it when levels are high to prevent toner fog, thus maintaining manufacturing precision.

The patent implements dynamics by making the voltage waveform phases variable while maintaining identical periods. The controller dynamically adjusts the phase relationships between voltage waveforms supplied to different developer transport members based on real-time toner concentration feedback. This dynamic phase modulation enables precise control of toner distribution among multiple transport members without increasing the fundamental period complexity, achieving balanced toner concentration through temporal differentiation.

The patent applies periodic action by using voltage waveforms with identical periods that are phase-shifted relative to each other. The periodic nature of these waveforms creates repeating potential difference patterns that rhythmically redistribute toner among transport members. This periodic phase-shifted action enables systematic toner concentration balancing across multiple transport members while maintaining relatively simple voltage control architecture.