Developing apparatus and image forming apparatus
The developing apparatus addresses developer scattering by employing a dual transport path system with a wider gap and transfer member, ensuring controlled airflow and reduced toner scattering.
JP2026062045APending Publication Date: 2026-04-09RICOH CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2026-04-09
AI Technical Summary
Technical Problem
Developer accumulation in the transport path downstream direction leads to blocked airflow, potentially causing insufficient suppression of developer scattering and increased risk of toner scattering.
Method used
A developing apparatus with a first and second transport path system, featuring a wider gap in the second region to facilitate airflow intake and a transfer facilitating member to manage developer transfer, reducing developer accumulation and scattering.
Benefits of technology
Effectively suppresses developer scattering by ensuring continuous airflow and controlled developer transfer, minimizing toner scattering and accumulation.
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Smart Images
Figure 2026062045000001_ABST
Abstract
To provide a developing apparatus and an image forming apparatus that can effectively suppress the scattering of developer. [Solution] The developing apparatus has a structure that allows outside air to flow into the internal space of the casing as the developer carrier rotates, through an inflow gap formed between the edge of the opening of the casing located downstream in the direction of the developer carrier's rotation and the surface of the developer carrier. This inflow gap has a first region located in the area where the developer carried on the developer carrier stands upright due to the magnetic poles of the developer carrier, and a second region located downstream of the first region in the direction of the developer carrier's rotation, where the gap between the casing and the surface of the developer carrier is wider than in the first region. A transfer facilitating member is provided on a first transport member installed in a first transport path that transports the developer recovered from the developer carrier in the axial direction of the developer carrier, to facilitate the transfer of the developer to a second transport path.
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Citation Information
Patent Citations
Developing device, process cartridge, and image forming apparatus
JP2015022169A