Regulating Member Controls Developer Density in Developing Device
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Solution Overview
Problem
The developing device faces issues with non-uniform developer density along the axial direction of the developing roller, leading to potential density irregularities due to the oblique orientation of the agitation transport member, which affects the efficient supply and regulation of developer from the supply member to the developing roller.
Innovation Solution
A regulating member is strategically positioned at the passageway portion between the supply and agitation transport members to control the movement of developer, ensuring uniform developer distribution and preventing excessive supply, thereby maintaining consistent developer density on the developing roller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the agitation transport member is disposed obliquely upward to transport developer, then the developer can be efficiently agitated and supplied, but non-uniform developer density along the axial direction of the developing roller occurs
Solution Approach 1:
A regulating member is introduced as an intermediary component between the agitation transport member and the developing roller. This regulating member includes a regulating surface that contacts the developer and controls its movement, ensuring uniform developer density is supplied to the developing roller while maintaining the oblique upward configuration of the agitation transport member for efficient developer supply
2Productivity
If the supply member supplies developer to the developing roller, then the developing process can proceed, but excessive developer supply causes density irregularities
Solution Approach 1:
The regulating member acts as a feedback control mechanism by monitoring and adjusting developer flow based on the space between itself and the developing roller. As the developing roller rotates and changes position, the regulating member automatically modulates the developer supply rate, preventing excessive supply and maintaining consistent developer density on the developing roller surface
Data Source
AI summary
Provided is a developing device including a developer carrier that holds developer, a supply member that supplies the developer to the developer carrier while agitating the developer, a transport member that is disposed obliquely upward in a vertical direction of the supply member, delivers and transports the developer with agitating the developer through a passageway portion provided at each end portion in an axial direction of the supply member, and a regulating member that is provided at a position corresponding to the passageway portion that delivers the developer from the supply member to the transport member, to regulate movement of the developer from the supply member to the developer carrier.