Missing character detection
Identify incomplete strings, absent date fields and characters lost through nozzle failure.
Inkjet-code inspection
Detect deteriorating inkjet codes before they become rejects
Inspect continuous-inkjet and other variable inkjet print for presence, content, contrast and character integrity at normal production speed.
Control a naturally variable print process
Purpose-built vision inspection
Separate acceptable inkjet variation from a real coding fault
Inkjet characters change as nozzles block, print heads move, substrates become wet or product presentation drifts. A well-designed inspection system establishes a reliable acceptance window without creating excessive false rejects.
Smudge and merge checks
Detect excess ink or product motion that joins characters and reduces readability.
Contrast monitoring
Evaluate whether the code can be reliably distinguished from the pack background.
Position verification
Confirm the printed message remains within the permitted area of the product or label.
System outcomes
More dependable inkjet print throughout the shift
Continuous inspection shows when code quality drifts, allowing production teams to intervene before a large quantity of finished product requires rework.
Detect nozzle issues
Flag incomplete character strokes and recurring print defects as they appear.
Reduce manual sampling
Apply the inspection to every printed product while maintaining normal line flow.
Protect readable codes
Control legibility as well as the exact date, batch or lot content.
Application engineering
Control lighting, motion and the printed surface
Dark print on a light carton is different from pale ink on curved, glossy or patterned packaging. We choose illumination and optics that maximise repeatable code contrast and use product handling to keep the code within view.
- Black, white and coloured inks
- Matt, gloss, curved and transparent surfaces
- Single or multiple lines of print
- Variable product position and conveyor speed
Related inspection systems
Build a complete code-control point
Combine the inspection with complementary print, data or reject checks where they reduce the risk of a non-conforming pack reaching the customer.
Frequently asked questions
Inkjet-code inspection questions
Every inspection begins with real samples, representative print and the operating conditions found on your production line.
Can vision detect a single blocked inkjet nozzle?
It can detect the resulting loss of character structure when the image resolution and acceptance criteria are sufficient. The practical threshold is established using deliberately degraded print samples.
Can white ink on dark packaging be inspected?
Yes, in many applications. The illumination wavelength, angle and exposure are selected to create stable contrast between the light ink and background.
Will normal inkjet variation cause false rejects?
The inspection tolerance is configured around representative good print and known failures. Stable product presentation and controlled lighting are important for maintaining a robust acceptance window.
Oxford Vision Systems
Test the limits of your inkjet-code quality
Send good, marginal and failed samples from the real line. We will assess the code, substrate, product motion and inspection tolerance.
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