Transporting Device Sheet Type Identification Calibration
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Solution Overview
Problem
Existing image forming apparatuses face challenges in accurately identifying the type of sheet being transported due to variations in motor characteristics, particularly when a new motor is installed, leading to potential misidentification of sheet types.
Innovation Solution
Incorporating a detecting portion to measure the load applied to the driving portion, an identifying portion to determine the sheet type based on detected characteristics, and a correcting portion to adjust the detection results to a predetermined reference, ensuring consistent identification even with motor replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a new motor is installed in the transporting device, then the transporting function is restored, but the identification accuracy of sheet type deteriorates due to variations in motor characteristics
Solution Approach 1:
The patent applies parameter changes by detecting the actual load characteristics of the new motor through measurement of current, voltage, and power consumption, then storing these detected parameters as reference data. This allows the system to adapt to the new motor's specific characteristics rather than relying on pre-programmed motor parameters, thereby maintaining accurate sheet type identification after motor replacement.
Solution Approach 2:
The patent implements feedback by continuously monitoring the load applied to the driving portion during sheet transport and using this feedback information to identify sheet types. The system compares detected load parameters against stored reference characteristics to determine sheet type, enabling accurate identification even when motor characteristics have changed due to replacement.
2Ease of repair
If motor characteristics vary between replacements, then the transporting device can be maintained with spare parts, but the consistency of sheet type identification deteriorates
Solution Approach 1:
The patent applies self-service by enabling the system to automatically detect and adapt to the specific characteristics of the installed motor without requiring manual reconfiguration. The detecting portion automatically measures load parameters, and the storing portion saves these characteristics, allowing the identification system to self-adjust to any motor replacement while maintaining consistent sheet type identification performance.
3Measurement precision
If the detecting portion measures load applied to the driving portion, then sheet type identification is enabled, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing the detecting portion to serve multiple functions: it measures load parameters for sheet type identification, monitors motor performance during operation, and provides data for system calibration. This multi-functional approach enables sheet type identification capability while minimizing the addition of separate dedicated components, thereby controlling device complexity.
Data Source
AI summary
A transporting device includes a detecting portion that detects a load applied to a driving portion provided for transporting a medium, an identifying portion that identifies a type of the medium from a result of detection performed by the detecting portion, and a correcting portion that fits, if a predetermined instruction is made, the result of detection to a predetermined reference characteristic of the load applied to the driving portion.