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| Start / | Knowledge / | Prints / |
| Accidentals | Changes | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Safety Measures | Quality |
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Knowledge / Prints / Print Substrates / Quality |
Paper Quality: subjective perception of a paper quality |
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Faultless Paper: paper without conditional of manufacturing or wrong handling originated quality defect |
Faulty Paper: common term for a paper with conditional of manufacturing or wrong handling originated quality defect |
Damaged Print Substrate: print substrate with quality defect originated by wrong handling |
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Damaged Paper: paper with quality defect originated by wrong handling |
Hannover Thin Spot: philatelic term for postage stamps from Hanover seeming a thin spot |
Paper With Break: paper on heavy creased paper with damaged paper structure |
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Light Sensitive Print Substrate: print substrate which reacts sensitive on light |
Water Sensitive Paper: paper which reacts sensitive on water |
Discoloured Paper: paper with changed colour by light or chemical reaction |
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Porous Paper: paper produced with not enough glue so the design print is interconecting |
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