{"id":727,"date":"2013-12-20T00:50:04","date_gmt":"2013-12-19T23:50:04","guid":{"rendered":"http:\/\/www.proof.de\/?post_type=encyclopedia&#038;p=727"},"modified":"2024-06-25T00:29:58","modified_gmt":"2024-06-24T22:29:58","slug":"gcr","status":"publish","type":"encyclopedia","link":"http:\/\/blog.proofs.de\/fr\/lexikon\/gcr\/","title":{"rendered":"GCR"},"content":{"rendered":"<div class=\"kk-star-ratings kksr-auto kksr-align-right kksr-valign-top\" data-payload='{\"align\":\"right\",\"id\":\"727\",\"slug\":\"default\",\"valign\":\"top\",\"ignore\":\"\",\"reference\":\"auto\",\"class\":\"\",\"count\":\"0\",\"legendonly\":\"\",\"readonly\":\"\",\"score\":\"0\",\"starsonly\":\"\",\"best\":\"5\",\"gap\":\"5\",\"greet\":\"Jetzt bewerten\",\"legend\":\"0\\\/5 - (0 vote)\",\"size\":\"24\",\"title\":\"GCR\",\"width\":\"0\",\"_legend\":\"{score}\\\/{best} - ({count} {votes})\",\"font_factor\":\"1.25\"}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">\u00c9valuer maintenant<\/span>\n    <\/div>\n    <\/div>\n<p>Gray Component Replacement ou, en fran\u00e7ais, la construction non color\u00e9e. Il s'agit d'une variante de la composition des couleurs dans l'impression.<\/p>\n<p>GCR et <a href=\"http:\/\/blog.proofs.de\/fr\/lexikon\/ucr\/\" target=\"_self\" title=\"UCR est l&#039;abr\u00e9viation de Under Color Removal ou r\u00e9duction de la sous-couleur, un proc\u00e9d\u00e9 utilis\u00e9 lors de la s\u00e9paration en CMJN afin de limiter la quantit\u00e9 maximale d&#039;encre d\u00e9pos\u00e9e.\" class=\"encyclopedia\">UCR<\/a> (Under Color Removal) sont des m\u00e9thodes oppos\u00e9es. En d'autres termes, alors que l'UCR consiste \u00e0 cr\u00e9er une image en couleur, puis \u00e0 ajouter du noir aux valeurs sombres profondes, le GCR consiste \u00e0 cr\u00e9er une image en noir et blanc, puis \u00e0 la colorer, comme on le faisait autrefois pour les gravures en couleur.<\/p>\n<p>Gray Component Replacement (GCR) r\u00e9duit la quantit\u00e9 d'encre couleur et la remplace par de l'encre noire. Cela peut se traduire par des \u00e9conomies, une meilleure qualit\u00e9 d'impression et une plus grande stabilit\u00e9. Voici les principaux aspects du GCR :<\/p>\n<h3>1. <strong>Principe de base<\/strong><\/h3>\n<p>La GCR est bas\u00e9e sur le fait que les tons gris (un m\u00e9lange de cyan, magenta et jaune) peuvent \u00eatre remplac\u00e9s par de l'encre noire sans modifier la couleur visuelle de l'image ou de l'\u00e9l\u00e9ment.<\/p>\n<h3>2. <strong>S\u00e9paration des couleurs<\/strong><\/h3>\n<p>Dans la <a href=\"http:\/\/blog.proofs.de\/fr\/lexikon\/farbseparation\/\" target=\"_self\" title=\"La s\u00e9paration des couleurs consiste \u00e0 d\u00e9composer une image num\u00e9rique color\u00e9e en s\u00e9parations de couleurs distinctes, en fonction de la proportion de couleurs qu&#039;elle contient.\" class=\"encyclopedia\">S\u00e9paration des couleurs<\/a> les images et les \u00e9l\u00e9ments sont convertis en leurs couleurs primaires (cyan, magenta, jaune et noir). <a href=\"http:\/\/blog.proofs.de\/fr\/lexikon\/cmyk\/\" target=\"_self\" title='CMYK d\u00e9signe les quatre couleurs d&#039;impression cyan, magenta, jaune et &quot;key&quot; (noir ou partie noire).' class=\"encyclopedia\">CMYK<\/a>) sont d\u00e9compos\u00e9es. Dans le cas de la GCR, une partie de la composante grise des couleurs cyan, magenta et jaune est \u00e9limin\u00e9e et remplac\u00e9e par le noir.<\/p>\n<h3>3. <strong>Avantages de GCR<\/strong><\/h3>\n<ul>\n<li><strong>Rentabilit\u00e9 :<\/strong> L'encre noire est g\u00e9n\u00e9ralement moins ch\u00e8re que les encres couleur, et l'utilisation de plus de noir peut r\u00e9duire le co\u00fbt total.<\/li>\n<li><strong>Stabilit\u00e9 :<\/strong> L'encre noire a moins tendance \u00e0 se d\u00e9grader que les encres couleur, ce qui se traduit par une qualit\u00e9 d'impression plus constante.<\/li>\n<li><strong>S\u00e9chage plus rapide :<\/strong> Le noir s\u00e8che g\u00e9n\u00e9ralement plus rapidement que les encres couleur, ce qui peut acc\u00e9l\u00e9rer le processus d'impression.<\/li>\n<\/ul>\n<h3>4. <strong>Domaines d'application<\/strong><\/h3>\n<p>Le GCR est souvent utilis\u00e9 dans les imprimeries commerciales, en particulier pour les grands tirages, o\u00f9 la rentabilit\u00e9 et la coh\u00e9rence sont essentielles.<\/p>\n<h3>5. <strong>Diff\u00e9rence avec UCR<\/strong><\/h3>\n<p>La GCR se distingue de l'Under Color Removal (UCR), une technique similaire. Alors que l'UCR ne concerne que les zones d'ombre, o\u00f9 les encres de couleur sont remplac\u00e9es par du noir, le GCR concerne \u00e9galement les tons moyens et peut \u00eatre utilis\u00e9 \u00e0 plus grande \u00e9chelle.<\/p>\n<h3>6. <strong>Mise en \u0153uvre technique<\/strong><\/h3>\n<p>Logiciel d'impression moderne et <a href=\"http:\/\/blog.proofs.de\/fr\/lexikon\/rip\/\" target=\"_self\" title='Un RIP est un processeur d&#039;images tram\u00e9es, c&#039;est-\u00e0-dire un &quot;processeur d&#039;images tram\u00e9es&quot;. Il traite les donn\u00e9es PDF ou Postscript et les envoie aux flasheuses ou aux imprimantes d&#039;\u00e9preuves connect\u00e9es.' class=\"encyclopedia\">RIP<\/a>s (processeurs d'images tram\u00e9es) proposent souvent des options de GCR qui permettent d'ajuster l'intensit\u00e9 de la substitution du noir afin de r\u00e9pondre aux besoins sp\u00e9cifiques du travail d'impression. Par exemple, des logiciels tels que ColorLogic ZePrA peuvent \u00e9galement \u00eatre configur\u00e9s de mani\u00e8re \u00e0 ce que la mise en \u0153uvre d'une <a href=\"http:\/\/blog.proofs.de\/fr\/lexikon\/sonderfarbe\/\" target=\"_self\" title=\"Les couleurs d&#039;accompagnement sont des couleurs qui n&#039;appartiennent pas \u00e0 l&#039;espace colorim\u00e9trique CMJN, mais qui sont imprim\u00e9es comme de v\u00e9ritables couleurs dans un syst\u00e8me d&#039;encrage suppl\u00e9mentaire. Les principaux repr\u00e9sentants sont les couleurs HKS et PANTONE.\" class=\"encyclopedia\">Couleur sp\u00e9ciale<\/a> en CMJN, il faut utiliser non seulement des GCR, mais aussi le moins de couleurs primaires possible.<\/p>\n<p>La GCR est donc une m\u00e9thode d'impression efficace qui permet d'am\u00e9liorer la stabilit\u00e9 des couleurs et de r\u00e9duire les co\u00fbts en \u00e9liminant les tons gris des encres couleur et en les rempla\u00e7ant par du noir.<\/p>\n<p><a title=\"Articles sur les GCR, la non-coloration\" href=\"http:\/\/de.wikipedia.org\/wiki\/Unbuntaufbau\" target=\"_blank\" rel=\"noopener noreferrer\">Pour plus d'informations, consultez Wikipedia.<\/a><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Gray Component Replacement ou, en fran\u00e7ais, la substitution des couleurs. Il s'agit, avec l'UCR (Under Color Removal under Unterfarbreduction), d'une variante de la composition des couleurs CMYK dans l'impression.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-727","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"GCR steht f\u00fcr Gray Component Replacement oder deutsch: Unbuntaufbau. 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