Color Registration Correction with Intermediate Transfer Belt Deviation Control
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Solution Overview
Problem
Existing image forming apparatuses face challenges in accurately correcting color registration while preventing intermediate transfer belt deviation, leading to inadequate correction and increased time and effort in aligning the belt.
Innovation Solution
An image forming apparatus that includes a control section executing color registration correction and deviation correction processes, where test images are formed and measured to correct position errors, and deviation is detected and corrected, with the control section restarting color registration correction if the deviation correction exceeds a predetermined level during the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If deviation correction is executed during color registration correction, then the intermediate transfer belt stability is improved, but the color registration measurement precision deteriorates due to cumulative correction errors
Solution Approach 1:
The patent segments the correction processes into distinct phases: color registration correction is performed first to establish accurate color alignment, followed by deviation correction to stabilize the transfer belt. By separating these corrections into sequential stages rather than simultaneous execution, the system avoids cumulative errors that would occur if deviation correction interfered with color registration measurements.
Solution Approach 2:
The patent applies preliminary action by completing color registration correction before initiating deviation correction. The color registration is established first using registration marks, and only after this preliminary correction is complete does the system proceed to deviation correction. This sequencing ensures that the foundation for accurate color alignment is established before any belt position adjustments are made.
2Measurement precision
If deviation correction is suspended during color registration correction, then color registration measurement precision is improved, but the intermediate transfer belt deviation increases requiring additional correction time
Solution Approach 1:
The patent divides the correction process into two sequential segments: first executing color registration correction to achieve precise color alignment, then executing deviation correction to stabilize the transfer belt. This segmentation allows each correction type to be performed optimally without interference from the other, while the total process time remains efficient due to the automated sequential execution.
Solution Approach 2:
The system implements feedback by monitoring the completion of color registration correction and automatically triggering deviation correction afterward. The control section detects when color registration is complete and initiates the deviation correction process, creating a feedback loop that ensures both corrections are performed in the optimal sequence without manual intervention or excessive delays.
3Productivity
If both color registration correction and deviation correction are executed simultaneously, then processing efficiency is improved, but correction accuracy deteriorates due to interfering correction effects
Solution Approach 1:
The patent segments the correction operations into distinct sequential phases rather than simultaneous execution. Color registration correction is completed first, followed by deviation correction. This segmentation maintains high accuracy for each correction type while the automated sequencing ensures efficient processing without manual intervention, resolving the trade-off between speed and precision.
Solution Approach 2:
The system employs periodic action by executing corrections in regular sequential periods: first the color registration correction period, then the deviation correction period. This periodic structure ensures that each correction type receives dedicated attention and resources, maintaining high accuracy while the automated periodic execution prevents unnecessary delays between phases.
Data Source
AI summary
An image forming apparatus having: a plurality of image forming sections each of which forms images of respective colors; an intermediate transfer belt; and a control section which executes a color registration correction process and a deviation correction process, wherein the color correction process includes: forming test images on the intermediate transfer belt by the plurality of image forming sections; measuring the test images thereafter; and correcting image forming positions of the image forming sections in response to the measurement results; and wherein the deviation correction process includes: detecting a deviation of the intermediate transfer belt; and correcting the detected deviation, and wherein, when an amount of correction in the deviation correction process exceeds a predetermined level during the execution of the color registration correction process, the control section executes the color registration correction process again.