Image Forming Apparatus Control Parameter Derivation
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Solution Overview
Problem
The existing image forming apparatuses face challenges in accurately determining the control parameters and remaining lifetime of components like the fixing film due to wear and deterioration, leading to inefficiencies in maintaining optimal printing conditions and reducing hot offset issues.
Innovation Solution
An image forming apparatus is designed with an image forming unit, control unit, reading unit, analysis unit, storage unit, and computation unit that form, read, analyze, and store images to derive control parameters and predict wear, using test images and stored printing conditions to modify prediction equations for accurate temperature correction and lifetime assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If control parameters are corrected according to member deterioration, then image quality is maintained, but measurement precision of member state deteriorates
Solution Approach 1:
The system performs preliminary actions by storing printing conditions and analysis results in advance, and uses computation units to predict member state before actual deterioration occurs. This allows accurate measurement of member state through predictive algorithms rather than reactive correction alone.
Solution Approach 2:
The system implements feedback mechanisms where reading units continuously monitor image quality, analysis units process the data to detect member deterioration trends, and control units adjust parameters based on this feedback loop. This creates a closed-loop system that improves measurement precision through continuous optimization.
2Loss of information
If printing conditions and analysis results are stored in association, then state transition is known, but device complexity increases
Solution Approach 1:
The system merges printing conditions, analysis results, and member state data into a unified storage structure where related information is associated together. This integration reduces information loss by maintaining contextual relationships while managing complexity through organized data architecture.
Solution Approach 2:
The storage unit serves multiple functions: storing printing conditions, analyzing image quality data, tracking member deterioration, and supporting predictive computations. This multi-functionality reduces the need for separate systems while maintaining comprehensive information management.
3Measurement precision
If computation unit derives control parameters with reference to stored information, then control accuracy is improved, but productivity decreases
Solution Approach 1:
The computation unit performs preliminary computations to establish predictive models and member state trends during periods of lower demand. This allows accurate control parameters to be derived in advance, reducing real-time computational burden and maintaining productivity while improving control accuracy.
Solution Approach 2:
The system uses its own stored historical data and analysis results to self-optimize control parameters without requiring external intervention or complex real-time calculations. This self-service capability maintains high control accuracy while minimizing computational overhead during operation.
Data Source
AI summary
An image forming apparatus includes an image forming unit, a control unit, a reading unit, an analysis unit, a storage unit, and a computation unit. The image forming unit forms an image on a sheet. The control unit controls the image forming unit. The reading unit reads the sheet. The analysis unit analyzes a reading result acquired by the image formed on the sheet being read by the reading unit, and outputs an analysis result. The storage unit stores a printing condition used when the image was formed and the analysis result in association with each other. The computation unit computes a control parameter to be used by the control unit in order to control the image forming unit, with reference to the analysis result and the printing condition stored in the storage unit.