Rubber Die Defect Inventory
Definition
A catalogue of individualising defects (nicks, cracks, compressed elements, border degradation) on a specific rubber stamp's die face, used to associate questioned impressions with a particular physical stamp.
- Subject
- Individualising defects on a rubber stamp die
- Examples
- Nicks, cracks, compressed elements, border wear
- Purpose
- Link questioned impressions to a specific stamp
Common questions
Why do rubber stamps develop individualising defects over time?+
Repeated use, cleaning, drying, and physical wear cause the rubber die face to crack, chip, and compress unevenly, and because these changes accumulate randomly, no two stamps develop the same pattern even if produced from the same mould.
How does an examiner use the defect inventory in casework?+
The examiner compares the pattern of defects on a questioned impression against a reference impression made with the suspect stamp, or against an inventory built from multiple known impressions, looking for matching flaws in position and shape rather than relying on the printed text alone.
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