Lubricant Application Device Torque Detection
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Solution Overview
Problem
Existing lubricant application devices in electrophotography lack efficient and cost-effective methods for detecting the near-end and end of lubricant levels, leading to suboptimal replacement timing and potential operational inefficiencies.
Innovation Solution
A lubricant application device with a near-end detection member that increases torque when contacting the rotatable applicator and releases by reverse-rotation, and an end detection member that also increases torque, allowing for precise detection of lubricant levels using torque monitoring, enabling accurate timing for replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional lubricant detection methods are used, then device complexity is reduced, but measurement precision of lubricant levels deteriorates
Solution Approach 1:
The lubricant application device detects its own lubricant level by monitoring the torque required to rotate the applicator roller. The system uses its existing motor and torque sensing capability to perform self-diagnosis, eliminating the need for separate detection devices while achieving precise measurement of lubricant remaining levels.
Solution Approach 2:
The patent replaces complex mechanical detection mechanisms with a torque-based electrical sensing method. By measuring the electrical torque parameters of the motor during roller rotation, the system achieves precise lubricant level detection without mechanical sensors or complex mechanical structures.
2Measurement precision
If advanced detection systems are implemented, then measurement precision improves, but device complexity increases
Solution Approach 1:
The motor serving the lubricant applicator performs dual functions: it both drives the applicator roller and serves as the detection sensor. The existing motor's torque sensing capability is utilized for lubricant level detection, making the system multi-functional without adding separate detection components.
Solution Approach 2:
The system uses its own operational parameters (motor torque) to detect lubricant levels. No external or separate detection system is needed - the lubricant application device monitors its own performance characteristics to determine when lubricant needs replenishment.
3Measurement precision
If torque-based detection is used, then measurement precision improves, but use of energy increases
Solution Approach 1:
The torque measurement occurs during the normal operational rotation of the applicator roller. The detection process utilizes the existing rotational motion required for lubricant application, so no additional energy is consumed specifically for detection - the same motor action serves both application and monitoring functions.
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
This solution allows for precise detection of lubricant levels in a low-cost and space-saving manner, optimizing replacement timing and reducing operational inefficiencies by detecting near-end and end states before lubricant exhaustion.
Implementation Method 1
a near-end detection member coupled to the support member such that it comes in contact with the rotatable applicator after consumption of a first amount of the solid lubricant source; an end detection member coupled to the support member such that it comes in contact with the rotatable applicator after consumption of a second amount of the solid lubricant source
Data Source
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AI summary
An example lubricant application device includes a rotatable applicator to apply a lubricant from a solid lubricant source to a rotating member, a support member to support the solid lubricant source in contact with the rotatable applicator, a near-end detection member and an end detection member coupled to the support member. The near-end detection member is coupled to the support member such that it comes in contact with the rotatable applicator after a first amount of the solid lubricant source has been consumed. The end detection member is coupled to the support member such that it comes in contact with the rotatable applicator after a second amount of the solid lubricant source has been consumed.