Define visible film holes, marks and rejection limits with smallest unacceptable samples, full web width, clear or printed regions and representative optical trials.
Describe the visible decision before selecting an inspection arrangement: which hole, mark or defect is unacceptable, which variation is permitted and which smallest examples define the boundary. Identify good, bad and marginal film across clear, printed and reflective regions, and state the full web width, representative tension and speed.
Use the film inspection specification checklist and expected-versus-recorded challenge plan. A visible decision is limited to the property made repeatable by the proposed setup; other required tests remain separate.
Plan film defect 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 visible defect or measurement definition for film holes, marks & visible defects before it limits the final system.
Discuss your application
Identify the film variant and sample, visible defect type and expected decision. Record the current inspection setup and presentation, including clear, printed or reflective regions and where the affected material must be identified.
Include acceptable variation, smallest unacceptable defects and marginal examples across the required web width. State representative tension, speed and presentation conditions for the film range rather than one chosen demonstration.
Connect the defect definition to the camera/lighting trial, agreed recipe and line-control response, and defect-position record. Keep the decision boundary and sample identity with results so an unresolved case remains visible in the review.
Define each visible hole, mark or defect that requires rejection, the smallest unacceptable examples and acceptable variation. Identify any hidden, functional or other property that needs a separate test rather than treating a visible result as proof.
Provide identified good, bad and marginal film samples, including the normal clear, printed and reflective regions. Tie the expected decision to each sample; one obvious defect does not establish the boundary for the complete range.
State the full web width to inspect and representative tension and speed. Show the actual film presentation and the range to be included in the optical trial rather than relying on a still sample or one nominal running condition.
Trial the proposed camera and lighting arrangement with the actual film regions and presentation. Record the arrangement, observed contrast and conditions with the results; a camera specification alone does not establish repeatable defect visibility.
Agree how the defect position and affected material will be recorded, and define recipe, reject and line-control responsibilities. Verify the agreed response alongside the visible decision; do not infer the disposition of material from an image result alone.
Compare the recorded decision with the expected decision for identified good, bad and marginal samples. Record unacceptable examples accepted and acceptable examples rejected separately, with agreed conditions, repetitions and follow-up for unresolved cases.