Small text
Ingredients, handling instructions, date and traceability text within the available area.
Sharp variable data
High-resolution printing
that stays readable.
Fine text, clean logos and scannable machine-readable codes engineered around speed, substrate and print geometry.
Print quality in context
Resolution is one part
of a good code.
A high DPI figure is useful, but it does not guarantee a reliable production result by itself. Code dimensions, droplet placement, product movement, ink spread, surface contrast and distance from the printhead all matter.
Oxford Traceability assesses the required output as a complete readability task, including downstream scanning or vision verification when the code is business-critical.
Fine detailSmall text and graphics
RepeatableControlled product presentation
VerifiableDesigned for scanning and inspection
01Stable product presentation
Resolution and speed
Design the code for
the moving product.
As line speed increases, the time available to place droplets changes. A larger print or higher vertical resolution can also increase data and firing demands.
The code should be designed for the operational speed range rather than a headline laboratory condition. We review the worst-case combination and retain suitable margins.
- Minimum module size for barcodes and 2D codes
- Target line speed and speed variation
- Print orientation relative to product travel
- Required human and machine readability
Practical rule
Specify the smallest acceptable code, fastest production speed and most difficult surface—not only the easiest nominal condition.
02Contrast and verification
Readable results
Build contrast,
then prove the read.
A code can look sharp to the eye and still scan inconsistently. Reflective surfaces, transparent films, background artwork and dot gain can all reduce decoding performance.
We can help set code size and location, select a suitable ink colour and plan inspection or verification where required.
- Quiet zones protected from artwork and pack edges
- High contrast between ink and substrate
- Stable code dimensions and print location
- Representative scanning at real conveyor speeds
Verification
A reader confirms that data can be decoded. A verifier can additionally measure code quality against a defined standard and method.
Print content
Detail that serves
a production purpose.
High-resolution TIJ makes it possible to combine several information types in one compact print area.
Logos
Brand marks and compliance symbols reproduced as optimised monochrome artwork.
Linear barcodes
Code 128, GS1-128, EAN and other supported symbologies.
QR codes
Compact links or encoded information with an appropriate module size.
DataMatrix
Dense 2D data with careful control of size, quiet zone and contrast.
Composite messages
Human-readable text and machine-readable data aligned in one managed layout.
Quality checklist
Control the variables
that affect detail.
A strong specification states the measurable output and the conditions in which it must be achieved.
ResolutionSelected for speed, ink, substrate and message requirements
Code dimensionsOverall size, module or X-dimension, quiet zone and orientation
ContrastInk colour and density considered against the printed or reflective background
Throw distanceSmall, repeatable printhead-to-product gap maintained by guides or handling
Trigger accuracySensor position and delay produce consistent code placement
VerificationScanner, reader or formal verification method selected to the project need
Frequently asked
Useful answers
before you specify.
For application-specific advice, call 01865 362785.
Can a TIJ printer produce 600 dpi?+
Many industrial TIJ systems can achieve up to 600 dpi in a suitable configuration, but the achievable combination of resolution and speed depends on the controller, cartridge, message and substrate.
Why do printed codes look blurred?+
Common causes include excessive or changing throw distance, unstable product movement, unsuitable ink, absorbent dot spread, condensation, vibration or an incorrect speed signal.
What makes a QR or DataMatrix code scan reliably?+
Sufficient module size, contrast, quiet zone, accurate geometry, suitable surface and stable print placement are all important. Test using representative scanners and line conditions.
Can multiple printheads create a taller image?+
Supported systems can stitch or coordinate multiple printheads, but mechanical alignment, controller capability and artwork set-up must be planned carefully.