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tympan wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 astrolabes 2 printing 3 notes toggle the table of contents tympan 4 languages العربية cymraeg français русский edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia this article has multiple issues please help improve it or discuss these issues on the talk page learn how and when to remove these messages this article may be in need of reorganization to comply with wikipedia s layout guidelines please help by editing the article to make improvements to the overall structure february 2015 learn how and when to remove this message this article needs more citations please help improve this article by adding citations to reliable sources unsourced material may be challenged and removed find sources tympan news newspapers books scholar jstor january 2017 learn how and when to remove this message learn how and when to remove this message a tympan is any drum like object 1 astrolabes edit in an astrolabe a tympan is a metal plate on which the coordinates of the celestial sphere azimuth and altitude are engraved in a stereographic projection a tympan is specific to a particular latitude so most astrolabes come with a set of interchangeable tympans suitable for use at different latitudes usually those of particular cities of importance cairo mecca medina jerusalem printing edit in hand operated letterpress printing the bruzer tympan is the taut cloth or paper mounted in a frame which is placed over the sheet of paper immediately prior to lowering the platen to make the impression 1 the bruzer s tympan is a sheet of oiled manilla paper which was securely fastened to the face of the platen of a letterpress printing machine underneath the tympan would be a packing which would vary in grade of firmness relevant to the type or image to be printed pre cut tympan papers were relatively expensive and as such were reused depending on their condition and the nature of the work the under packing consisted of loose fibre paper board sometimes known as saffron which absorbed the impact of the letterpress principle thus avoiding damage to the hand set or pre cast typography or engravings notes edit 1 2 definition of tympan www merriam webster com retrieved 2024 07 23 this printmaking related article is a stub you can help wikipedia by adding missing information v t e retrieved from https en wikipedia org w index php title tympan oldid 1324120859 categories printmaking printmaking stubs hidden categories wikipedia articles needing reorganization from february 2015 articles needing additional references from january 2017 all articles needing additional references articles with multiple maintenance issues all stub articles this page was last edited on 25 november 2025 at 17 48 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents tympan 4 languages add topic