Inkjet Printer Abnormal Noise Detection and Correction
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Solution Overview
Problem
Existing inkjet printing technologies face challenges in achieving high-quality printing due to variations in printing paper sheet characteristics, which affect optical reading measurements and correction processes, leading to complex detection and correction optimization for each type of paper sheet.
Innovation Solution
An inkjet printer equipped with an optical reading device, an abnormal noise detecting device, and a control device that analyzes image data from unprinted and printed areas to detect abnormal noise on the printing paper sheet, adjusting detection and correction settings based on the noise state to reduce noise effects and improve printing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If detection and correction optimization is performed for each type of printing paper sheet, then printing quality is improved, but process complexity and number of steps increase
Solution Approach 1:
The patent creates a universal detection and correction system that can handle multiple types of printing paper sheets through a single standardized process. By using reference images and image processing algorithms, the system adapts to different paper characteristics without requiring separate optimization procedures for each paper type, thus maintaining high printing quality while reducing process complexity
Solution Approach 2:
The system dynamically adjusts detection and correction parameters based on the actual printing results obtained from the optical reading device. By changing parameters such as threshold values and correction amounts according to the analyzed image data, the system achieves adaptability to different paper types without increasing procedural complexity
2Manufacturing precision
If detection and correction optimization is performed for each type of printing paper sheet, then printing quality is improved, but the number of detection and correction steps increases
Solution Approach 1:
The patent merges multiple detection and correction operations into a single integrated process. The optical reading device captures printing results, the control unit analyzes the images to detect paper characteristics, and correction is applied in one unified workflow, eliminating the need for separate detection and correction steps for each paper type
Solution Approach 2:
The system performs preliminary detection of paper characteristics by optically reading the printing results before final correction is applied. This preliminary action allows the control unit to pre-determine appropriate correction parameters based on detected paper type, streamlining the subsequent correction process and reducing the overall number of steps
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
The solution enables appropriate detection and correction according to the printing paper sheet's state, resulting in higher-quality printings by optimizing settings for ejection state detection and printing correction, thereby reducing noise-related issues.
Implementation Method 1
an optical reading device that optically reads at least one of an unprinted area on a printing paper sheet, a test chart printed area on a first printing in which a test chart is printed, and an image printed area on a second printing in which an image other than a test chart is printed
Data Source
AI summary
An inkjet printer includes: an optical reading device that optically reads at least one of an unprinted area on a printing paper sheet, a test chart printed area on a first printing in which a test chart is printed, and an image printed area on a second printing in which an image other than a test chart is printed, and acquires image data on the read area; an abnormal noise detecting device that analyzes the acquired image data and detects abnormal noise on a surface of a printing paper sheet; and a control device that changes at least a setting related to detection of an ejection state of an inkjet head or a printing state, or a setting related to printing correction, based on a state of the detected abnormal noise.