Back-trap Mottle: A Review of Mechanisms and Possible Solutions
Print mottle is a serious and common uneven printing defect that occurs when printing coated paper by the offset multicolor printing process. It is characterized by a non-uniform appearance in terms of brightness, gloss, or color density that appears mostly in solid printed areas. Back-trap print mo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2021-06-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | https://bioresources.cnr.ncsu.edu/resources/back-trap-mottle-a-review-of-mechanisms-and-possible-solutions/ |
| _version_ | 1797741050639417344 |
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| author | Hak Lae Lee Hye Jung Youn Ming He Jiachuan Chen |
| author_facet | Hak Lae Lee Hye Jung Youn Ming He Jiachuan Chen |
| author_sort | Hak Lae Lee |
| collection | DOAJ |
| description | Print mottle is a serious and common uneven printing defect that occurs when printing coated paper by the offset multicolor printing process. It is characterized by a non-uniform appearance in terms of brightness, gloss, or color density that appears mostly in solid printed areas. Back-trap print mottle and water-interference print mottle occur when the quality of the paper substrate, especially the coating layer quality, is not satisfactory. To cope with this quality problem of coated papers, the understanding of the offset printing process, the requirements of coated-paper quality, and the reasons for this problem should be addressed. In this review, the basic process of offset printing and the mechanisms of print mottles were explored, the importance of coating uniformity in both the coating structure and process was reviewed, and the approaches to cope with print mottle were introduced. |
| first_indexed | 2024-03-12T14:22:14Z |
| format | Article |
| id | doaj.art-440af0d2f1b741cfbe606697c0104c9d |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-03-12T14:22:14Z |
| publishDate | 2021-06-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-440af0d2f1b741cfbe606697c0104c9d2023-08-18T20:09:47ZengNorth Carolina State UniversityBioResources1930-21262021-06-011636426644710.15376/biores.16.3.LeeBack-trap Mottle: A Review of Mechanisms and Possible SolutionsHak Lae Lee0Hye Jung Youn1Ming He2Jiachuan Chen3Program in Environmental Materials Science, Department of Agriculture, Forestry, and Bioresources, and Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Korea; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353 ChinaProgram in Environmental Materials Science, Department of Agriculture, Forestry, and Bioresources, and Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Korea; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353 ChinaState Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353 ChinaState Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353 ChinaPrint mottle is a serious and common uneven printing defect that occurs when printing coated paper by the offset multicolor printing process. It is characterized by a non-uniform appearance in terms of brightness, gloss, or color density that appears mostly in solid printed areas. Back-trap print mottle and water-interference print mottle occur when the quality of the paper substrate, especially the coating layer quality, is not satisfactory. To cope with this quality problem of coated papers, the understanding of the offset printing process, the requirements of coated-paper quality, and the reasons for this problem should be addressed. In this review, the basic process of offset printing and the mechanisms of print mottles were explored, the importance of coating uniformity in both the coating structure and process was reviewed, and the approaches to cope with print mottle were introduced.https://bioresources.cnr.ncsu.edu/resources/back-trap-mottle-a-review-of-mechanisms-and-possible-solutions/print mottleback-trapoffset printingcoating structurecoating thicknessbinder migrationdrying |
| spellingShingle | Hak Lae Lee Hye Jung Youn Ming He Jiachuan Chen Back-trap Mottle: A Review of Mechanisms and Possible Solutions BioResources print mottle back-trap offset printing coating structure coating thickness binder migration drying |
| title | Back-trap Mottle: A Review of Mechanisms and Possible Solutions |
| title_full | Back-trap Mottle: A Review of Mechanisms and Possible Solutions |
| title_fullStr | Back-trap Mottle: A Review of Mechanisms and Possible Solutions |
| title_full_unstemmed | Back-trap Mottle: A Review of Mechanisms and Possible Solutions |
| title_short | Back-trap Mottle: A Review of Mechanisms and Possible Solutions |
| title_sort | back trap mottle a review of mechanisms and possible solutions |
| topic | print mottle back-trap offset printing coating structure coating thickness binder migration drying |
| url | https://bioresources.cnr.ncsu.edu/resources/back-trap-mottle-a-review-of-mechanisms-and-possible-solutions/ |
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