Priming Agent for Lubricant Applicator in Electrophotographic Imaging
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Solution Overview
Problem
The initial startup of a lubricating device in electrophotographic image forming apparatuses often results in insufficient lubrication due to the lack of lubricant, leading to high friction and potential fracture of the metering blade, which can cause image uniformity issues and contamination downstream.
Innovation Solution
A novel lubricating system that includes a lubricant applicator and a priming agent, prepared by mixing lubricant with a powder, applied to the imaging surface before initial operation to ensure stable and constant lubrication, with the lubricant applicator located downstream of the cleaning device and upstream of the metering blade, spreading the lubricant into a thin layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lubricating device is operated for the first time after installation, then the lubricant applicator has little if any lubricant immediately after startup, but this results in insufficient lubrication and high friction that can cause metering blade fracture
Solution Approach 1:
The patent applies preliminary action by pre-coating the lubricant applicator with lubricant before initial operation. The lubricant is applied to the applicator surface in advance, creating a reservoir that ensures immediate lubrication upon startup, preventing high friction and metering blade fracture during the critical initial operation period.
2Reliability
If the lubricant applicator is located downstream of the cleaning device, then it can supply constant lubricant amount, but the metering blade may still experience insufficient lubrication during initial startup
Solution Approach 1:
The patent addresses the time loss during initial operation by pre-applying lubricant to the applicator before the device starts operating. This preliminary lubrication ensures that from the very first moment of operation, the metering blade receives adequate lubrication, eliminating the delay period where insufficient lubrication would occur.
Solution Approach 2:
The pre-applied lubricant on the applicator surface acts as an intermediary reservoir that bridges the gap between device startup and the establishment of normal lubricant supply. This intermediary layer of lubricant ensures continuous protection during the transition period.
3Force
If the metering blade contacts the imaging surface without sufficient lubrication, then high friction occurs, but this leads to blade edge fracture and lubricant leakage
Solution Approach 1:
The patent prevents blade edge fracture by pre-applying lubricant to the applicator, which then immediately transfers lubrication to the imaging surface when the metering blade contacts it. This preliminary lubrication action reduces frictional resistance before high-force contact occurs, protecting blade integrity during initial operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The priming agent effectively reduces frictional resistance and maintains lubrication over time, preventing blade fractures and ensuring consistent image quality by providing a stable lubrication layer during initial startup and subsequent operations.
Implementation Method 1
The priming agent is prepared by mixing a lubricant and a powder, and is applied, prior to initial operation, on the lubricant applicator for application to the imaging surface upon startup
Data Source
AI summary
A lubricating device operable to lubricate a moving imaging surface subsequent to removal of residual toner by a cleaning device includes a lubricant applicator, a metering blade, and a priming agent. The lubricant applicator is located downstream of the cleaning device in a direction of movement of the imaging surface, and applies lubricant to the imaging surface. The metering blade is located downstream of the lubricant applicator in the direction of movement of the imaging surface, and spreads the applied lubricant into a thin layer by directly contacting the imaging surface. The priming agent is prepared by mixing a lubricant and a powder, and provided, prior to initial operation, on the lubricant applicator for application to the imaging surface upon startup.