tag:blogger.com,1999:blog-61379575088648114.post2523845050110219147..comments2024-03-29T07:57:55.016+00:00Comments on Norvic Philatelics Blog: Litho ring flaw on London 2010 Festival of Stamps Souvenir SheetIan - Norvichttp://www.blogger.com/profile/16436130277706268046noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-61379575088648114.post-87351106518029868062010-05-24T07:21:01.862+01:002010-05-24T07:21:01.862+01:00The flaws seem to be of two different types:
IE: ...The flaws seem to be of two different types: <br />IE: The smaller ring on the left is placed higher than the one on the right, but saying this it could be they are caused by the same flake or foreign object that has moved during production.Machin Manhttps://www.blogger.com/profile/09518381259926478157noreply@blogger.comtag:blogger.com,1999:blog-61379575088648114.post-40339822598344381572010-05-23T19:41:55.520+01:002010-05-23T19:41:55.520+01:00In printing terms, this particular sort of defect ...In printing terms, this particular sort of defect is known as a 'hickey' - caused by a foreign object on the plate or blanket, sometimes dried flecks of ink. <br /><br />Very bad for a printer's quality control to let this through.John Billingshttps://www.blogger.com/profile/04352606316372786104noreply@blogger.com