Cleaning Unit Belt Surface Contamination Correction Pattern
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Solution Overview
Problem
In image forming apparatuses, contamination of the belt surface during correction processes leads to degraded pattern detection accuracy and image quality due to the lack of immediate cleaning before correction is performed.
Innovation Solution
An image forming apparatus with a cleaning unit, detection unit, and control unit that cleans the belt surface before forming correction patterns, ensuring accurate pattern detection and correction by determining the contamination degree and adjusting the cleaning operation accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cleaning is performed after correction ends, then the belt is cleaned, but the belt surface may be contaminated again before subsequent correction due to image forming unit detachment or attachment
Solution Approach 1:
The cleaning unit performs cleaning operations in advance before correction processing begins, rather than waiting until after correction ends. This preliminary cleaning ensures the belt surface is clean before patterns are formed and detected, preventing contamination from affecting pattern detection accuracy during the correction process.
Solution Approach 2:
The control unit monitors the operational state of image forming units and dynamically adjusts cleaning timing based on detected events such as unit detachment or attachment. When contamination risk is detected, the system triggers cleaning operations proactively, creating a feedback loop that maintains belt cleanliness based on actual operational conditions.
2Measurement precision
If cleaning is performed frequently to maintain belt cleanliness, then pattern detection accuracy is improved, but processing time and system complexity increase
Solution Approach 1:
The system performs cleaning operations in advance before correction processing is needed, so the belt is already clean when correction begins. This eliminates the need for frequent cleaning interruptions during correction operations, maintaining high pattern detection accuracy while preserving correction processing efficiency.
Solution Approach 2:
The cleaning unit operates autonomously based on control unit instructions triggered by specific events (unit detachment/attachment). The system self-regulates cleaning frequency based on actual contamination risk, performing cleaning only when necessary rather than on a fixed schedule, thus balancing cleanliness maintenance with processing efficiency.
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
Ensures accurate pattern detection and correction, thereby enhancing the quality of the formed images by maintaining a clean belt surface during the correction process.
Implementation Method 1
a detection unit provided around the carrier to detect a contamination degree of the carrier... a detection unit which detects an amount of reflected light from the carrier
Data Source
AI summary
An image forming apparatus is provided. The image forming apparatus includes: a carrier; a forming unit which forms an image on a carrier; a cleaning unit which cleans the carrier; a detection unit which detects a correction pattern formed on the carrier; and a control unit which performs a correction processing including cleaning a pattern forming region in the carrier by the cleaning unit, forming the correction pattern in the pattern forming region by the forming unit after finishing the cleaning by the cleaning unit, and correcting an image forming characteristic of the forming unit based on a detection result of the correction pattern by the detection unit.