{"id":15291,"date":"2021-05-26T00:00:00","date_gmt":"2021-05-26T00:00:00","guid":{"rendered":"https:\/\/www.domtar.com\/blog-posts\/attenuation-de-la-marbrure-de-type-back-trap-piege-a-dos\/"},"modified":"2024-12-17T21:05:25","modified_gmt":"2024-12-17T21:05:25","slug":"attenuation-de-la-marbrure-de-type-back-trap-piege-a-dos","status":"publish","type":"blog-posts","link":"https:\/\/www.domtar.com\/fr\/blog-posts\/attenuation-de-la-marbrure-de-type-back-trap-piege-a-dos\/","title":{"rendered":"Att\u00e9nuation de la marbrure de type \u00ab\u00a0back-trap\u00a0\u00bb (pi\u00e8ge \u00e0 dos)"},"content":{"rendered":"<p style=\"text-align: left;\">Vous imprimez un travail avec de grandes zones de forte couverture dans des tons bleus ou violets. Le reste du travail est superbe, mais ces tons bleus sont marbr\u00e9s et stri\u00e9s. Que se passe-t-il et comment pouvez-vous r\u00e9soudre ce probl\u00e8me lorsque vous \u00eates sous presse ?<\/p>\n<p style=\"text-align: left;\"><img decoding=\"async\" class=\"alignleft size-full wp-image-13802\" src=\"https:\/\/www.domtar.com\/wp-content\/uploads\/2024\/04\/Ink-Uniformity-CMYK-1.jpg\" alt=\"Uniformit\u00e9 de l'encre-CMYK-1\" width=\"253\" height=\"190\">\u00c9tant donn\u00e9 que le reste de vos aplats et de vos m\u00e9langes de couleurs semblent corrects, il se peut que vous soyez confront\u00e9 \u00e0 une marbrure de type \u00ab\u00a0back-trap\u00a0\u00bb (pi\u00e8ge \u00e0 dos). La marbrure du bac se produit lorsque l&rsquo;encre noire (K) et l&rsquo;encre cyan (C) d\u00e9pos\u00e9es dans les deux premiers groupes de la presse sont partiellement reprises sur le papier par les groupes magenta (M) et jaune (Y) (dans votre rotation d&rsquo;encre KCMY standard). L&rsquo;encre n&rsquo;est pas enlev\u00e9e uniform\u00e9ment, ce qui donne un aspect tachet\u00e9. Comment pouvez-vous savoir si cela se produit ? Il suffit de demander \u00e0 l&rsquo;imprimeur de retirer de l&rsquo;impression toutes les unit\u00e9s sauf le noir et le cyan. Votre couleur peut \u00eatre diff\u00e9rente de la teinte de votre image finale, mais vous devriez \u00eatre en mesure de voir rapidement si l&rsquo;uniformit\u00e9 de l&rsquo;encre s&rsquo;est am\u00e9lior\u00e9e.<\/p>\n<p style=\"text-align: left;\"><img decoding=\"async\" class=\"alignright size-full wp-image-13804\" src=\"https:\/\/www.domtar.com\/wp-content\/uploads\/2024\/04\/Ink-Uniformity-CMYK-2.jpg\" alt=\"Uniformit\u00e9 de l'encre-CMYK-2\" width=\"330\" height=\"88\" srcset=\"https:\/\/www.domtar.com\/wp-content\/uploads\/2024\/04\/Ink-Uniformity-CMYK-2.jpg 330w, https:\/\/www.domtar.com\/wp-content\/uploads\/2024\/04\/Ink-Uniformity-CMYK-2-300x80.jpg 300w\" sizes=\"(max-width: 330px) 100vw, 330px\" \/>OK. Vous pouvez constater que l&rsquo;uniformit\u00e9 de l&rsquo;encre est nettement am\u00e9lior\u00e9e. Que faites-vous maintenant ? Vous ne pouvez certainement pas imprimer avec seulement deux couleurs sur votre travail en quadrichromie ! L&rsquo;encre cyan a tendance \u00e0 \u00eatre plus sujette aux marbrures que les autres couleurs. Bien que cela puisse prendre un peu de temps au pressier, la meilleure solution est de changer l&rsquo;ordre de rotation de l&rsquo;encre. La plupart des presses sont r\u00e9gl\u00e9es avec une rotation d&rsquo;encre standard de KCMY. En d\u00e9pla\u00e7ant l&rsquo;encre cyan vers la derni\u00e8re unit\u00e9 de la rotation, vous pouvez am\u00e9liorer de mani\u00e8re significative la r\u00e9partition g\u00e9n\u00e9rale de l&rsquo;encre sur votre travail d&rsquo;impression.<\/p>\n<p style=\"text-align: left;\">L&rsquo;image ci-dessus a \u00e9t\u00e9 imprim\u00e9e sur une presse qui disposait de groupes suppl\u00e9mentaires qui n&rsquo;\u00e9taient pas utilis\u00e9s pour le travail. En laissant le deuxi\u00e8me groupe \u00ab\u00a0ouvert\u00a0\u00bb, l&rsquo;imprimeur a pu d\u00e9placer le cyan vers le cinqui\u00e8me groupe sans avoir \u00e0 d\u00e9placer le reste de ses couleurs. Et&#8230;..&rsquo;uniformit\u00e9 de la couche d&rsquo;encre a \u00e9t\u00e9 consid\u00e9rablement am\u00e9lior\u00e9e ! De nombreux imprimeurs n&rsquo;h\u00e9sitent pas \u00e0 modifier la rotation des encres lorsqu&rsquo;ils constatent ce type de marbrure. La modification de la rotation de l&rsquo;encre peut \u00eatre le moyen de sauver votre travail sans sacrifier la qualit\u00e9 d&rsquo;impression.<\/p>","protected":false},"excerpt":{"rendered":"<p>Vous imprimez un travail avec de grandes zones de forte couverture dans des tons bleus ou violets. Le reste du travail est superbe, mais ces tons bleus sont marbr\u00e9s et stri\u00e9s. Que se passe-t-il et comment pouvez-vous r\u00e9soudre ce probl\u00e8me lorsque vous \u00eates sous presse ? \u00c9tant donn\u00e9 que le reste de vos aplats et &hellip;<\/p>\n","protected":false},"author":1,"featured_media":11694,"parent":0,"template":"","meta":{"_acf_changed":false,"_genesis_block_theme_hide_title":false,"footnotes":""},"categories":[491],"tags":[493,497,435],"class_list":["post-15291","blog-posts","type-blog-posts","status-publish","has-post-thumbnail","hentry","category-conseils-et-bonnes-pratiques","tag-conseils-et-bonnes-pratiques-en-matiere-dimpression","tag-conseils-pour-la-conception-dimprimes","tag-tendances-et-conseils-en-matiere-dimpression","post","with-featured-image"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Att\u00e9nuation de la marbrure de type &quot;back-trap&quot; (pi\u00e8ge \u00e0 dos) - Domtar<\/title>\n<meta name=\"description\" content=\"Vous imprimez un travail avec de grandes surfaces tr\u00e8s couvrantes, mais vous avez des probl\u00e8mes de marbrures et de stries. 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