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Pillar Of The Community
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Mark had found a difference in the Flag/Fireworks issues that shows up under SW UV. The question is why does one have a dot pattern over most of the tagged image and the other has a random look? Is it the printing process?   |
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Al |
| Edited by angore - 09/26/2017 07:13 am |
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Pillar Of The Community
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Perhaps due to different screen sizes for the phosphor ink application? Are the stamps from different formats (sheet vs. booklet)? They may have been printed on different presses.
My 2 cents.
Robert |
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Angore, I have noticed that before. Check on some of these issues that have been printed by two different printers - you will find the same thing.
The easiest would be on your coils. Check one with a B prefix and one with a P prefix.
Peter |
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| Edited by Petert4522 - 09/26/2017 10:41 am |
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I have 1 sheet single and 1 booklet single with the sporadic pattern. I have a whole booklet with the grid like pattern.
The booklet and sheet were printed by BEP. |
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Al |
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Pillar Of The Community
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Angore, are you sure? The BEP has not printed any stamps in a while that I know of.
Peter |
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From stampsmarter. Scott Number: 2276 Description: Flag and Fireworks Denomination: 22c Color: multi. Details: Perforation: 11 Printing Type: Photo. Gum Type: Water Activated Paper Type: tagged Number Issued: 730M Printer: Bureau of Printing And Engraving Date Issued: 5/1/1987 Watermark: Unwatermarked same for booklet version Plate Numbers: Plate Numbers Value: eBay 'Sold' Values   |
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Al |
| Edited by angore - 09/26/2017 11:50 am |
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Angore. I had the newer stamps in mind. If you check some of the latest coils they have exactly the same type of tagging.
Peter |
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I think it is a difference in screens. One has a finer screen than the other.
Robert |
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| Edited by Trainwreck - 09/26/2017 6:15 pm |
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Angore, when I first noticed the dot pattern was on the Flag in the Clouds issue. It was printed twice. First was the "B" prefix and then when they sold out we got the same stamp with the "P" prefix. This second stamp has the same dot pattern, or so it seems like.
Now, if you look at the new Father Herburgh stamps ( coils ) you will notice the same pattern.
Peter |
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Perhaps the top mat had worn some, or perhaps the top example was overinked (too much taggant) Either thing would cause a blurring/blending of the cells (dots). |
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What is meant by different screens? What screens are being referred to? |
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Based upon a comment on the other SCF it is just a difference in age of the tagging mats. |
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Al |
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Mystock, the word "screen" is not used correctly above . Tagging, at least here in the States is applied by means of a flexographic mat. Hence the word "mat" keeps coming up in the above posts. By the way, a lot of times these mats are made from worn out precancel mats.
Peter |
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I wanted to know if anyone had an image of a typical tagging mat. I had guessed the dot matrix is part of the mat that may be used to capture the taggant but just a guess. |
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Al |
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Replies: 15 / Views: 3,999 |
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Posted 09/26/2017 07:11 am
