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inconsistent results

Why is inkjet coding production giving inconsistent results?

Variation usually begins with changing product or packaging conditions, unstable presentation, unsuitable settings or wear in the process.

Recommended machinery for this problem
inkjetcoder.co.uk
View suitable machinery at inkjetcoder.co.uk →

Direct answer

Variation usually begins with changing product or packaging conditions, unstable presentation, unsuitable settings or wear in the process. For inkjet coding, confirm the result with representative product and packaging before altering several variables at once.

Likely causes

  • Product, pack or environmental conditions are changing during the run in the inkjet coding process.
  • The presentation or detection point is not repeatable in the inkjet coding process.
  • Settings are compensating for a worn or unsuitable component in the inkjet coding process.
  • The acceptance method is visual when the result should be measured in the inkjet coding process.

What should be checked first?

  • Measure a representative sample at the start, middle and end
  • Record product temperature, density, viscosity or bulk condition
  • Check pack dimensions and supplier-batch variation
  • Inspect guides, sensors, valves, seals and contact parts
  • Run one controlled setting change at a time
  • Compare the easiest and hardest normal format
  • Define a numerical pass limit

What should you compare before buying?

Compare the operating principle against the actual product, pack range, sustained good output, measurable quality limits, cleaning, changeover and site conditions. Use representative samples and agree what will be demonstrated during testing before delivery and after installation.

Machinery options for this problem

Start with the first option below. It most closely matches the product, pack and problem described on this page. The other options may suit a wider line or a different level of automation.

inkjetcoder.co.ukView machinery →labellingmachinesuk.co.ukView machinery →codingmachinery.co.ukView machinery →

Related inkjet coding questions

Production process relating to inkjet codingLabelling and coding

How can I increase inkjet coding production speed?

Increase sustained good output by identifying the actual constraint, separating machine cycle time from handling time and removing the first recurring cause of waiting.

See the checks →
Production process relating to inkjet codingLabelling and coding

Why does inkjet coding equipment keep jamming or stopping?

Find the first point where control is lost. A downstream alarm is often only the final symptom of poor feeding, transfer, detection or format control.

See the checks →
Production process relating to inkjet codingLabelling and coding

How can I reduce waste when handling inkjet coding?

Measure product loss, rejected packaging, rework and start-up waste separately, then remove the largest repeatable cause.

See the checks →
Questions customers also ask

Useful questions before you compare machinery

Use the questions below to prepare the information needed for a useful recommendation.

What should I check first for inconsistent results in inkjet coding?
Measure a representative sample at the start, middle and end. Record product temperature, density, viscosity or bulk condition.
Can settings alone solve inconsistent results?
Sometimes, but settings should only be changed after product, packaging, presentation, wear and utilities have been checked. Change one controlled condition at a time.
What samples are needed for a inkjet coding machinery trial?
Provide representative product and packaging from normal production, including the hardest size or condition and enough material for setup and sustained testing.
How should performance be accepted?
Use written numerical and visual acceptance limits over a representative run, including output, quality, rejects, interventions and changeover where relevant.
Where can I see machinery for this problem?
Start with inkjetcoder.co.uk. It is the closest match for the product, pack and problem on this page; the other options may suit a wider line or a different production requirement.