Image forming system
The image forming system addresses the challenge of transferring toner onto high-resistance sheets by pre-charging the sheets with the opposite polarity, enabling efficient toner transfer and preventing electrostatic adhesion, thus enhancing transferability and stacking efficiency.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CANON KK
- Filing Date
- 2025-07-08
- Publication Date
- 2026-05-26
AI Technical Summary
High-speed image forming apparatuses face challenges in transferring toner images onto sheets with high electrical resistance, such as synthetic paper and extra-thick paper, due to the need for high transfer voltages that can lead to insufficient secondary transfer voltage and increased risk of abnormal discharge phenomena.
The image forming system incorporates a sheet charging device to pre-charge the sheet with the opposite polarity to the toner before the secondary transfer process, allowing for a lower secondary transfer voltage to be applied, thereby reducing the risk of abnormal discharge and improving toner transferability.
This approach enhances toner transferability to high-resistance sheets and mitigates electrostatic adhesion between sheets, improving stacking efficiency and reducing the risk of image defects.
Smart Images
Figure 2026086325000001_ABST