Current condition
Label each sample with its material, production condition, visible feature and expected judgement. Retain the reference and record who agreed it so an apparent trial error can be reviewed against the same acceptance boundary.
Industrial machine vision
Good, Bad and Marginal Sample Range: Optics and lighting selection
What decisions about good, bad and marginal sample range materially change the system concept for continuous roll fed material inspection?
A useful web-inspection sample set includes acceptable material across its normal variation, known unacceptable conditions and marginal examples near the decision boundary. Each sample needs an agreed judgement and enough production context to interpret the optical trial.
Include printed regions, splices and the relevant material range, then test presentation and timing under the intended operating conditions. Link the samples to the agreed visible-defect definition.
On the production floor
Turn your production information into clearer decisions — Continuous Roll Fed Material Inspection
Plan continuous roll fed material inspection around representative good, bad and marginal samples, line presentation, lighting, reject handling and challenge criteria. Discuss an optical feasibility trial with Oxford Vision Systems. Use this guide to resolve good, bad and marginal sample range before it limits the final system.
Discuss your application
What to record
Good, Bad and Marginal Sample Range: condition, range and effect on your process
Realistic range
Cover normal good-material variation as well as obvious faults. Include marginal samples and credible differences in print, splice appearance and tension or presentation; record any missing parts of the range as limits of the trial.
Effect on the system
Show which settings, safeguards, maintenance tasks, decisions or required outcomes are affected by changes in good, bad and marginal sample range.
Before you contact us
Five questions about good, bad and marginal sample range for your application
- Who can confirm this information?Identify the person responsible for good, bad and marginal sample range in production, quality, engineering or operations.
- How representative is the sample?Include age, supplier, batch, environment and upstream process state where they affect continuous roll fed material inspection.
- What is the difficult condition?Include the slow, reflective, flexible, dirty, damaged, marginal or uncommon case that your system must still handle.
- How will you judge the result?Agree the method, repetitions, acceptable range, result record and the response if the observed result falls outside the agreed range.
- What else must be coordinated?Your final continuous roll fed material inspection scope must also account for recipe, reject and line-control interfaces, false-accept, false-reject and challenge criteria, current regulations and the conditions at your site.
Connected details
Review good, bad and marginal sample range as part of the complete system
Visible Defect or Measurement Definition for Continuous Roll-Fed Material Inspection
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for visible defect or measurement definition for continuous roll-fed material inspection. That lets us compare options against your real production rather than one nominal value.
Good, Bad and Marginal Sample Range
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for good, bad and marginal sample range. That lets us compare options against your real production rather than one nominal value.
Part Presentation and Production Speed
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for part presentation and production speed. That lets us compare options against your real production rather than one nominal value.
Optics, Lighting and Environmental Conditions
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for optics, lighting and environmental conditions. That lets us compare options against your real production rather than one nominal value.
Recipe, Reject and Line-Control Interfaces
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for recipe, reject and line-control interfaces. That lets us compare options against your real production rather than one nominal value.
False-Accept, False-Reject and Challenge Criteria
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for false-accept, false-reject and challenge criteria. That lets us compare options against your real production rather than one nominal value.