{"id":9600,"date":"2019-10-16T09:39:43","date_gmt":"2019-10-16T14:39:43","guid":{"rendered":"https:\/\/blog.arpinphilately.com\/?p=9600"},"modified":"2019-10-16T09:41:53","modified_gmt":"2019-10-16T14:41:53","slug":"quest-ce-quune-epreuve-de-planche","status":"publish","type":"post","link":"https:\/\/blog.arpinphilately.com\/fr\/quest-ce-quune-epreuve-de-planche\/","title":{"rendered":"Qu’est-ce qu’une \u00e9preuve de planche?"},"content":{"rendered":"
\"Canada
Canada #61P \u00c9preuve de planche, bloc de 4<\/figcaption><\/figure>\n

Qu\u2019est-ce qu\u2019une \u00e9preuve de planche? Premi\u00e8rement, je suis constamment \u00e9merveill\u00e9e par toutes les facettes de la philat\u00e9lie. Non seulement des timbres de poste, mais aussi des feuillets souvenirs, des carnets, plis premier jour et blocs de planche. En plus de cela, il y a tous les items qui font partie de la famille philat\u00e9lique, mais qui n\u2019ont pas \u00e9t\u00e9 utilis\u00e9s pour le service postal\u00a0: les timbres \u00ab\u2009Cendrillon\u2009\u00bb, \u00e9tiquettes, timbres SP\u00c9CIMENS et \u00e9preuves de matrice. Il faut aussi ajouter \u00e0 cette liste les \u00e9preuves de planche. Quelle est la d\u00e9finition d\u2019une \u00e9preuve de planche?<\/p>\n

 <\/p>\n

 <\/p>\n

QU\u2019EST-CE QU\u2019UNE \u00ab\u2009\u00c9PREUVE\u2009\u00bb EN IMPRIMERIE?<\/strong><\/h2>\n

 <\/p>\n

\"\u00c9preuve
\u00c9preuve de planche #68P paire<\/figcaption><\/figure>\n

Le terme \u00ab\u2009\u00e9preuve\u2009\u00bb est couramment utilis\u00e9 par les imprimeurs. Que ce soit un timbre, une revue, une circulaire ou une brochure, tous doivent \u00eatre v\u00e9rifi\u00e9s avant de passer \u00e0 la phase finale l\u2019imprimerie. Souvent, plusieurs \u00e9preuves sont effectu\u00e9es afin de s\u2019assurer que tout para\u00eet bien sur la page. Il faut v\u00e9rifier la couleur, le placement sur la page, ainsi que la pr\u00e9cision de l\u2019image. Ces essais sont appel\u00e9s \u00ab\u2009\u00e9preuves\u2009\u00bb. Il peut y avoir une \u00e9preuve produite pour chaque \u00e9tape de la conception du design.<\/p>\n

 <\/p>\n

QU\u2019EST-CE QU\u2019UNE \u00c9PREUVE DE PLANCHE?<\/strong><\/h2>\n
\"Copie<\/a>
Feuille de timbres Administration postale de la Lituanie \u2014 copie de l\u2019originale<\/figcaption><\/figure>\n

Comment d\u00e9finir une \u00e9preuve de planche? Tout d\u2019abord, il faut comprendre comment les timbres \u00e9taient produits \u00e0 l\u2019\u00e9poque. La plupart des \u00e9preuves de planche recherch\u00e9es par les collectionneurs datent du tout d\u00e9but de la production des timbres poste. La premi\u00e8re \u00e9tape consistait \u00e0 dessiner le timbre, ensuite un graveur gravait l\u2019image sur une matrice (petit cube de m\u00e9tal). Une fois la matrice approuv\u00e9e \u00e0 l\u2019inspection, elle \u00e9tait reproduite de multiples fois sur une planche en m\u00e9tal. \u00c0 partir de cette planche, on imprimait une feuille de timbres.<\/p>\n

\u00c0 noter\u00a0: APR\u00c8S la production finale de la planche, mais AVANT de passer l\u2019inspection et proc\u00e9der \u00e0 l\u2019impression finale, la planche \u00e9tait mise \u00e0 \u00ab\u2009l\u2019\u00e9preuve\u2009\u00bb. En d\u2019autres mots, on imprimait des feuilles d\u2019essai pour s\u2019assurer que tout \u00e9tait beau. Ces feuilles d\u2019essai sont des \u00e9preuves de planche. On peut donc d\u00e9finir une \u00e9preuve de planche comme suit\u00a0:<\/p>\n

\u00c9preuve de planche : une impression d\u2019essai d\u2019une feuille de timbres \u00e0 partir d\u2019une une plaque d’impression approuv\u00e9e (planche maitresse).<\/strong><\/p>\n

<\/h3>\n

QU\u2019EST-CE QUI REND LES \u00c9PREUVES DE PLANCHE UNIQUES?<\/strong><\/h2>\n

 <\/p>\n

\"Exemple
Timbre du Canada #211 PP<\/figcaption><\/figure>\n

 <\/p>\n

 <\/p>\n

La plupart des \u00e9preuves de planche \u00e9taient imprim\u00e9es sur du carton ou du papier d\u2019Inde. Selon le \u00ab\u2009Stamp Collector\u2019s Encyclopedia\u2009\u00bb pg. 149 (je traduis)\u00a0: \u00ab\u2009le papier d\u2019Inde est un papier mince, durable et opaque…. produit \u00e0 partir de fibres de bambou. Il est majoritairement employ\u00e9 par des imprimeries pour produire des \u00e9preuves, puisque sa texture permet de reproduire et bien visionner des images et des gravures aux d\u00e9tails fins et d\u00e9licats.\u2009\u00bb Fait int\u00e9ressant \u00e0 propos du papier d\u2019Inde\u00a0: il a vu le jour en Chine!!<\/p>\n

L\u2019usage du papier de l\u2019Inde r\u00e9sultait en un timbre aux couleurs plus limpides et vibrantes. Les \u00e9preuves de planches sont presque toujours imperfor\u00e9es; ces timbres ne seront jamais utilis\u00e9s pour le service postal, il \u00e9tait donc inutile de les perforer. Les timbres d\u2019une \u00e9preuve de planche sont identiques aux timbres qui seront finalement imprim\u00e9s et officiellement utilis\u00e9s pour la poste (contrairement aux timbres d\u2019essai, mais \u00e7a, c\u2019est un autre sujet!!).<\/p>\n

 <\/p>\n

O\u00d9 PUIS-JE ME PROCURER DES \u00c9PREUVES DE PLANCHE?<\/strong><\/h2>\n

 <\/p>\n

\"Logo<\/a>
Chez Arpin Philat\u00e9lie<\/figcaption><\/figure>\n

 <\/p>\n

Par le pass\u00e9, les \u00e9preuves de planche \u00e9taient vendues ou tout simplement donn\u00e9es aux collectionneurs int\u00e9ress\u00e9s! Aujourd\u2019hui, d\u2019apr\u00e8s mes recherches, toutes les \u00e9preuves de planche de timbres modernes sont d\u00e9truites \u00e0 l\u2019imprimerie. Si vous poss\u00e9dez des informations contradictoires, laissez-moi un petit mot dans la section \u00ab\u2009commentaires\u2009\u00bb.<\/p>\n

Comme plus t\u00f4t mentionn\u00e9es, les \u00e9preuves de planche consistent en une feuille de timbres compl\u00e8te. Mais la plupart furent d\u00e9coup\u00e9es en timbres individuels, en paires, ou en blocs de quatre, etc. Mais ils sont toujours consid\u00e9r\u00e9s des \u00e9preuves de planche puisqu\u2019ils proviennent de la feuille originale. \u00c9videmment, c\u2019est tr\u00e8s co\u00fbteux d\u2019acheter une \u00e9preuve de planche intacte, puisqu\u2019il peut y avoir une cinquantaine, voir des centaines de timbres sur la feuille.<\/p>\n

Des \u00e9preuves de planche rares peuvent valoir beaucoup d\u2019argent aujourd\u2019hui. Mais en plus d\u2019\u00eatre rares, les collectionneurs appr\u00e9cient leur valeur historique. Parfois, ces timbres poss\u00e8dent une image plus limpide que les timbres officiels imprim\u00e9s sur un papier diff\u00e9rent.<\/p>\n

Mais la collection d\u2019\u00e9preuves de planche n\u2019est pas seulement pour les plus riches. Il s\u2019agit de bien magasiner. L\u2019achat d\u2019une \u00e9preuve de planche \u00e0 l\u2019individuel peut s\u2019av\u00e9rer une m\u00e9thode plus abordable pour se procurer un bel exemplaire d\u2019un timbre rare qui est plus dispendieux ou presque impossible \u00e0 se procurer compte tenu de sa raret\u00e9. \u00c0 vous de d\u00e9cider!<\/p>\n

Visitez la boutique chez Arpin Philat\u00e9lie<\/a> pour visualiser des \u00e9preuves de planche dans les sections Timbres du Canada<\/a> ou Timbres US<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Qu\u2019est-ce qu\u2019une \u00e9preuve de planche? Premi\u00e8rement, je suis constamment \u00e9merveill\u00e9e par toutes les facettes de la philat\u00e9lie. Non seulement des timbres de poste, mais aussi des feuillets souvenirs, des carnets, plis premier jour et blocs de planche. En plus de cela, il y a tous les items qui font partie de la famille philat\u00e9lique, mais … Lire la suite<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"generate_page_header":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[29],"tags":[],"class_list":["post-9600","post","type-post","status-publish","format-standard","hentry","category-timbres-faq","infinite-scroll-item"],"yoast_head":"\nQu'est-ce qu'une \u00e9preuve de planche? - L'\u00c9cho du Philat\u00e9liste<\/title>\n<meta name=\"description\" content=\"L'\u00e9preuve de planche\u00a0est une impression d\u2019essai d\u2019une feuille de timbres \u00e0 partir d\u2019une une plaque d'impression approuv\u00e9e (planche maitresse).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.arpinphilately.com\/fr\/quest-ce-quune-epreuve-de-planche\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu'est-ce qu'une \u00e9preuve de planche?\" \/>\n<meta property=\"og:description\" content=\"Qu\u2019est-ce qu\u2019une \u00e9preuve de planche? 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