{"id":28701,"date":"2026-05-05T21:11:46","date_gmt":"2026-05-05T19:11:46","guid":{"rendered":"https:\/\/www.profartspla.site\/wordpress\/?p=28701"},"modified":"2026-05-09T09:38:13","modified_gmt":"2026-05-09T07:38:13","slug":"caffenol-pour-tirage-papier-argentique","status":"publish","type":"post","link":"https:\/\/www.profartspla.site\/wordpress\/2026\/05\/05\/caffenol-pour-tirage-papier-argentique\/","title":{"rendered":"Caff\u00e9nol pour tirage papier argentique"},"content":{"rendered":"<p>Le caffenol est un <strong>r&eacute;v&eacute;lateur<\/strong> (il fait appara&icirc;tre l&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_32115a200381ae17929ebaf3b6ae4e91\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/image\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>image<\/a> latente), tandis que le vinaigre peut servir de <strong>bain d&rsquo;arr&ecirc;t<\/strong>, mais <strong>il faut un fixateur<\/strong>. Sans fixateur, l&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_32115a200381ae17929ebaf3b6ae4e91\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/image\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>image<\/a> dispara&icirc;tra &agrave; la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_c229695f5270cd46191083d023c542ab\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/lumiere\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>lumi&egrave;re<\/a>.<\/p>\n\n\n\n<p><strong>Recette simple du caffenol r&eacute;v&eacute;lateur maison<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 L d&rsquo;eau chaude<\/li>\n\n\n\n<li>40 g de caf&eacute; soluble<\/li>\n\n\n\n<li>16 g de vitamine C<\/li>\n\n\n\n<li>54 g de carbonate de sodium (cristaux de soude)<\/li>\n\n\n\n<li>&Eacute;videmment du papier photosensible argentique (marque Foma semi-mat recommand&eacute;e, beaucoup moins ch&egrave;re que Ilford).<\/li>\n<\/ul>\n\n\n\n<p>PR&Eacute;CAUTION : TOUJOURS VERSER LES CRISTAUX DE SOUDE DANS L&rsquo;EAU ET NON L&rsquo;INVERSE !!! Voil&agrave;, c&rsquo;est le seul truc dangereux &agrave; retenir !<\/p>\n\n\n\n<p>M&eacute;langez dans cet ordre : eau &rarr; caf&eacute; &rarr; vitamine C &rarr; carbonate (attention ! versez en petite quantit&eacute; car cela mousse).<\/p>\n\n\n\n<p>Le produit est valable pour le papier et les pellicules mais attention, il s&rsquo;oxyde tr&egrave;s rapidement&nbsp;!<\/p>\n\n\n\n\t\t<figure class=\"wp-block-jetpack-videopress jetpack-videopress-player\" style=\"\">\n\t\t\t<div class=\"jetpack-videopress-player__wrapper\"> <div class=\"jetpack-video-wrapper\"><iframe title=\"VideoPress Video Player\" aria-label=\"VideoPress Video Player\" width=\"925\" height=\"520\" src=\"https:\/\/videopress.com\/embed\/qVNW4KYl?cover=1&amp;autoPlay=0&amp;controls=1&amp;loop=0&amp;muted=0&amp;persistVolume=1&amp;playsinline=0&amp;preloadContent=metadata&amp;useAverageColor=1&amp;hd=0\" frameborder=\"0\" allowfullscreen data-resize-to-parent=\"true\" allow=\"clipboard-write\"><\/iframe><script src='https:\/\/v0.wordpress.com\/js\/next\/videopress-iframe.js?m=1770107250'><\/script><\/div><\/div>\n\t\t\t\n\t\t\t\n\t\t<\/figure>\n\t\t\n\n\n<h3 class=\"wp-block-heading\"><strong>Protocole &agrave; suivre<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. Composition (dans le noir ou lumi&egrave;re inactinique)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poser les objets et textures sur le papier photosensible<\/li>\n\n\n\n<li>Penser : Superposition, transparence, <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_e4b2498dc13c927d1fbda182f106da90\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/narration\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>narration<\/a> visuelle<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. Exposition : &Eacute;clairer 2 &agrave; 10 minutes. Plus c&rsquo;est long &rarr; plus c&rsquo;est sombre<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">3. <strong>BAIN 1<\/strong> : R&eacute;v&eacute;lation (caffenol) Surveiller&nbsp;l&rsquo;image qui appara&icirc;t progressivement en remontant &agrave; la surface votre image<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">4. <strong>BAIN 2&nbsp;<\/strong>: Bain d&rsquo;arr&ecirc;t (eau et quelques goutes de vinaigre) 30 secondes&nbsp; Stoppe la r&eacute;action<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">5. <strong>BAIN 3 <\/strong>: Fixateur (indispensable) 5 &agrave; 10 minutes Rend l&rsquo;image <strong>stable &agrave; la lumi&egrave;re<\/strong>. Lumi&egrave;re blanche &agrave; nouveau possible. Astuce : fomafix en poudre (longue conservation et toujours &agrave; port&eacute;e de main).<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">6. <strong>BAIN 4 (bac blanc) <\/strong>: Rin&ccedil;age Eau claire (5 min)<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">7. S&eacute;chage : &Agrave; plat ou suspendu<\/h4>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>&Eacute;tapes plus exp&eacute;rimentales<\/strong><\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Imbibe un papier (<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_6ab51599a6b27ab0edaf291caaa10871\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/aquarelle\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>aquarelle<\/a> ou photo) avec du caffenol<\/li>\n\n\n\n<li>Pose des objets dessus<\/li>\n\n\n\n<li>Expose au soleil ou &agrave; la lampe UV (10 min &agrave; 1h)<\/li>\n\n\n\n<li>Vaporise du vinaigre &rarr; r&eacute;actions, halos<\/li>\n\n\n\n<li>Retire les objets &rarr; apparition de silhouettes<\/li>\n\n\n\n<li>L&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_32115a200381ae17929ebaf3b6ae4e91\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/image\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>image<\/a> n&rsquo;est pas fix&eacute;e donc elle disparaitra rapidement. Il est possible de tester un passage dans le bain de fixateur.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Le caffenol est un r\u00e9v\u00e9lateur (il fait appara\u00eetre l\u2019image latente), tandis que le vinaigre peut servir de bain d\u2019arr\u00eat, mais il faut un fixateur. Sans fixateur, l\u2019image dispara\u00eetra \u00e0 la lumi\u00e8re. Recette simple du caffenol r\u00e9v\u00e9lateur maison PR\u00c9CAUTION : TOUJOURS VERSER LES CRISTAUX DE SOUDE DANS L&rsquo;EAU ET NON L&rsquo;INVERSE !!! Voil\u00e0, c&rsquo;est le seul &hellip; <\/p>\n","protected":false},"author":1,"featured_media":28702,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1118],"tags":[],"class_list":["post-28701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tuto_technart"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.profartspla.site\/wordpress\/wp-content\/uploads\/2026\/05\/caffenol-e1778008281690.jpeg?fit=200%2C151&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/posts\/28701","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/comments?post=28701"}],"version-history":[{"count":7,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/posts\/28701\/revisions"}],"predecessor-version":[{"id":28742,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/posts\/28701\/revisions\/28742"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/media\/28702"}],"wp:attachment":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/media?parent=28701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/categories?post=28701"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/tags?post=28701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}