[AI Image Inspection Case] Text Inspection of Silk Screen Printing
We will conduct inspections for issues such as missing text in silk screen printing through image inspection!
You sent us photo samples of defective conditions that occasionally occur in the silk printing process. Is it possible to introduce inspections for issues like missing characters in silk printing through image inspection? This is a consultation regarding that. We will conduct a simple inspection for "missing" and "fading." By using the "comparison with master image" function of EasyInspector, we were able to conduct the inspection. We performed verification on the sample with the smallest visible defect among the samples we received. As a result, under limited conditions (*), we were able to detect the defect of missing characters. However, outside of those conditions, due to the nature and shape of the product, we mistakenly detected many areas that were not defective. *The limited conditions refer to when the inspection was conducted by focusing on one specific area of the printed part, so if we try to operate under the same conditions, the inspection range will likely be quite limited.
basic information
**Used Software and Equipment** Software Used: EasyInspector (formerly EasyInspector) Field of View: Approximately 153mm Minimum Size of Inspection Target: 0.5mm Number of Inspection Points: 1 Camera Resolution: 20 million pixels Lens Focal Length: 16mm Distance Between Lens and Product: Approximately 215mm Lighting: Indoor lighting To suppress the reflection of the product surface shining white due to the lighting, a roof was made with a board above the camera. Current 'EasyInspector2' color package can be used for inspection in comparison with the master image.
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