Printing Apparatus Adjustment Using Multiple Circle Pattern
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Solution Overview
Problem
Existing printing apparatuses face challenges in accurately detecting printing errors using adjustment patterns, as they require precise specification of the size, position, tilt, and other parameters of the adjustment pattern in the scan image.
Innovation Solution
A printing apparatus producing method that involves printing a multiple circle pattern and an adjustment pattern in predetermined relative positions on a medium, scanning the medium to generate a scan image, detecting the multiple circle pattern to determine the relative positions, and calculating adjustment parameters based on the detection result to adjust the printing section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adjustment pattern is printed on a medium for detecting printing errors, then printing error detection capability is improved, but accurate specification of the adjustment pattern's size, position, and tilt in the scan image becomes more difficult
Solution Approach 1:
A multiple circle pattern is introduced as an intermediary element between the adjustment pattern and the scan image analysis. This multiple circle pattern serves as a reference marker that facilitates accurate detection of the adjustment pattern's position, size, and tilt by providing known geometric relationships that can be easily identified and measured in the scan image
Solution Approach 2:
The multiple circle pattern creates a simplified copy or representation of the spatial relationships needed for measurement. By detecting the positions and dimensions of these circles, the system can infer the adjustment pattern's parameters without directly analyzing the complex adjustment pattern itself, thereby improving measurement precision
Data Source
AI summary
A printing apparatus producing method includes causing a printing apparatus before adjustment to print a multiple circle pattern and an adjustment pattern in predetermined relative positions on a medium, scanning the printed medium and generating a scan image, detecting the adjustment pattern based on a detection position of the multiple circle pattern detected from the scan image and the relative positions, calculating adjustment parameters based on a detection result of the adjustment pattern, and storing the adjustment parameters in a nonvolatile memory of the printing apparatus before adjustment to produce an adjusted printing apparatus.