Image Forming Color Correction Using Inserted Trigger Images
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Solution Overview
Problem
Existing image forming devices fail to timely correct color issues when image quality deteriorates before trigger conditions are met, affecting printing performance.
Innovation Solution
Insert a first image into intervals between job pages or before/after specific pages during the printing process, using sensors to detect image quality and trigger color correction when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If color correction is triggered based on preset conditions (consumable status, page count, environment), then the color correction mechanism is simple to implement, but the color correction timing may be delayed or inappropriate when image quality deteriorates
Solution Approach 1:
The patent implements a feedback mechanism by detecting the actual image quality through detection devices (such as CTD sensors measuring transfer image characteristics) and using this real-time information to trigger color correction. This closes the loop between image formation and quality assessment, allowing the system to respond dynamically to actual conditions rather than relying solely on preset thresholds.
Solution Approach 2:
The patent replaces the mechanical/preset-based trigger system with an automated detection and evaluation system. Instead of relying on manual preset conditions, the system uses detection devices to measure image quality parameters (density, contrast, color accuracy) and automatically determines when color correction is needed, substituting mechanical thresholds with intelligent sensing and processing.
2Reliability
If color correction is performed frequently to maintain image quality, then image quality remains high, but the productivity and printing efficiency of the device decreases
Solution Approach 1:
The feedback mechanism allows the system to perform color correction only when actually needed based on real-time image quality detection. This prevents unnecessary correction operations while ensuring quality maintenance, optimizing the balance between productivity and quality consistency.
Solution Approach 2:
The system dynamically adjusts correction timing based on detected image quality parameters such as transfer image density, contrast ratios, and color accuracy. By monitoring these parameters in real-time and triggering correction only when they deviate from acceptable ranges, the system maintains quality without excessive intervention, thereby preserving printing efficiency.
3Reliability
If a first image is inserted into job pages for color correction detection, then color correction can be triggered timely, but the job processing time and complexity increases
Solution Approach 1:
The patent segments the color correction function from the main printing job by using a separate first image (test image) that is printed alongside or separate from the actual job pages. This test image contains specific patterns (such as color bars or density charts) that can be detected independently to assess color quality, allowing correction decisions to be made without delaying the entire job processing.
Solution Approach 2:
The first image acts as a preliminary test that is printed before or during the main job to assess color quality in advance. By performing this detection action preliminarily, the system can determine whether color correction is needed before the main printing is complete, enabling timely intervention without significantly extending the overall processing time.
Data Source
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AI summary
The present disclosure generally relates to the field of image forming technology and, more particularly, relates to a color correction method. The color correction method includes acquiring a job to be processed, inserting a first image into part of or each of intervals between adjacent job pages of the job to be processed, and/or, inserting the first image before/after a specific job page included in the job to be processed. The first image is configured to trigger color correction. Obtaining a detection result of a transfer image formed by the first image on an image carrier, determining whether the detection result meets a condition for triggering color correction, and when the detection result meets the condition for triggering color correction, performing color correction. In the embodiments of the present disclosure can trigger color correction in time according to the detection result of the inserted image, thus ensuring the timely rate of color correction performed by the image forming device and ensuring the image quality effect of the image output by the image forming device.