Color Misregistration Correction via Temperature Difference Detection
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Solution Overview
Problem
Conventional image forming apparatuses perform color misregistration corrections at power-on using stored values, even when the previous usage state is similar to the current state, leading to unnecessary corrections and increased resource consumption.
Innovation Solution
An image forming apparatus that detects internal temperature differences and forms patterns of multiple colors on a transfer medium only when the temperature difference exceeds a predetermined value, calculates misregistration amounts, and corrects image positions accordingly to ensure accurate color alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If color misregistration correction is always performed at power-on using stored correction values, then color alignment accuracy is improved, but unnecessary corrections increase resource consumption and reduce system efficiency
Solution Approach 1:
The system changes the parameter of correction execution from a fixed condition (always at power-on) to a variable condition based on temperature difference. The determining unit compares current temperature with stored temperature to calculate temperature difference, and only performs correction when this difference exceeds a threshold, thereby optimizing resource usage while maintaining accuracy when needed
Solution Approach 2:
The system implements feedback by detecting temperature changes and using this information to control whether correction operations are performed. The temperature detecting unit continuously monitors temperature, and this feedback loop allows the system to adapt its correction behavior based on actual thermal conditions, preventing unnecessary corrections when temperature remains stable
2Manufacturing precision
If color misregistration correction is performed frequently, then color alignment accuracy is maintained, but apparatus wear increases and operational time is wasted
Solution Approach 1:
The system uses temperature difference as a dynamic parameter to control correction frequency. By setting a threshold for temperature difference, the system performs corrections only when thermal conditions warrant it, reducing unnecessary operational cycles and extending apparatus life while maintaining precision when temperature changes affect alignment
3Productivity
If temperature-based correction determination is implemented, then unnecessary corrections are reduced and resources are conserved, but system complexity increases due to additional sensing and control logic
Solution Approach 1:
The system introduces temperature as an intermediary parameter that mediates between the power-on event and the correction execution. The temperature detecting unit and determining unit act as intermediaries that translate thermal state into correction decisions, providing a simple yet effective control mechanism that balances resource efficiency with manageable system complexity
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 approach reduces unnecessary color misregistration corrections, conserves resources, and extends the life of the image forming apparatus by performing corrections only when necessary, based on actual temperature changes within the apparatus.
Implementation Method 1
a temperature detecting unit that detects a temperature within the image forming apparatus
Data Source
AI summary
A determining unit determines whether a difference between a temperature value and a temperature detected by a temperature detecting unit is equal to or larger than a first value. A pattern forming unit, when the determining unit determines that the difference is equal to or larger than the first value, forms a pattern for measurement including sub-patterns of a plurality of colors on a transfer medium. A calculating unit calculates a misregistration-amount for each sub-pattern based on a detected position of the sub-pattern and a predetermined position of the sub-pattern. A correcting unit corrects a position on which the sub-pattern is to be formed based on the misregistration-amount. An image forming unit forms an image for each color factoring in corrected position for each color.